[syzbot] [input?] [usb?] [mm?] INFO: rcu detected stall in vma_link_file

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Oct 14, 2024, 11:02:30 AM10/14/24

to Liam.H...@oracle.com, ak...@linux-foundation.org, linux...@vger.kernel.org, linux-...@vger.kernel.org, linu...@kvack.org, linu...@vger.kernel.org, lorenzo...@oracle.com, syzkall...@googlegroups.com, vba...@suse.cz

Hello,

syzbot found the following issue on:

HEAD commit: 4a9fe2a8ac53 dt-bindings: usb: dwc3-imx8mp: add compatible..
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
console output: https://syzkaller.appspot.com/x/log.txt?x=13425040580000
kernel config: https://syzkaller.appspot.com/x/.config?x=4510af5d637450fb
dashboard link: https://syzkaller.appspot.com/bug?extid=ce483fd06e2061f44f5d
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17336fd0580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/883c5319cb52/disk-4a9fe2a8.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/caf4421ed2ef/vmlinux-4a9fe2a8.xz
kernel image: https://storage.googleapis.com/syzbot-assets/d8e3beb01d49/bzImage-4a9fe2a8.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+ce483f...@syzkaller.appspotmail.com

rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
1-...D } 2645 jiffies s: 2181 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):

Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 13390 Comm: modprobe Not tainted 6.12.0-rc1-syzkaller-00027-g4a9fe2a8ac53 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:io_serial_in+0x87/0xb0 drivers/tty/serial/8250/8250_port.c:407
Code: 6d b5 fe 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 1a 66 03 5d 40 89 da ec <5b> 0f b6 c0 5d 41 5c c3 cc cc cc cc e8 38 eb 0d ff eb a2 e8 c1 eb
RSP: 0018:ffffc900001b7f08 EFLAGS: 00000002
RAX: dffffc0000000060 RBX: 00000000000003fd RCX: 0000000000000000
RDX: 00000000000003fd RSI: ffffffff82a07780 RDI: ffffffff936356a0
RBP: ffffffff93635660 R08: 0000000000000001 R09: 000000000000001f
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000020 R14: fffffbfff26c6b26 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8881f5900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f62d4710409 CR3: 000000011ced8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<IRQ>
serial_in drivers/tty/serial/8250/8250.h:137 [inline]
serial_lsr_in drivers/tty/serial/8250/8250.h:159 [inline]
wait_for_lsr+0xda/0x180 drivers/tty/serial/8250/8250_port.c:2068
serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3315 [inline]
serial8250_console_write+0xf5a/0x17c0 drivers/tty/serial/8250/8250_port.c:3393
console_emit_next_record kernel/printk/printk.c:3092 [inline]
console_flush_all+0x800/0xc60 kernel/printk/printk.c:3180
__console_flush_and_unlock kernel/printk/printk.c:3239 [inline]
console_unlock+0xd9/0x210 kernel/printk/printk.c:3279
vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2407
vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:68
_printk+0xc8/0x100 kernel/printk/printk.c:2432
printk_stack_address arch/x86/kernel/dumpstack.c:72 [inline]
show_trace_log_lvl+0x1b7/0x3d0 arch/x86/kernel/dumpstack.c:285
sched_show_task kernel/sched/core.c:7582 [inline]
sched_show_task+0x3f0/0x5f0 kernel/sched/core.c:7557
show_state_filter+0xee/0x320 kernel/sched/core.c:7627
k_spec drivers/tty/vt/keyboard.c:667 [inline]
k_spec+0xed/0x150 drivers/tty/vt/keyboard.c:656
kbd_keycode drivers/tty/vt/keyboard.c:1522 [inline]
kbd_event+0xcbd/0x17a0 drivers/tty/vt/keyboard.c:1541
input_handler_events_default+0x116/0x1b0 drivers/input/input.c:2549
input_pass_values+0x777/0x8e0 drivers/input/input.c:126
input_event_dispose drivers/input/input.c:352 [inline]
input_handle_event+0xb30/0x14d0 drivers/input/input.c:369
input_event drivers/input/input.c:398 [inline]
input_event+0x83/0xa0 drivers/input/input.c:390
hidinput_hid_event+0xa12/0x2410 drivers/hid/hid-input.c:1719
hid_process_event+0x4b7/0x5e0 drivers/hid/hid-core.c:1540
hid_input_array_field+0x535/0x710 drivers/hid/hid-core.c:1652
hid_process_report drivers/hid/hid-core.c:1694 [inline]
hid_report_raw_event+0xa02/0x11c0 drivers/hid/hid-core.c:2040
__hid_input_report.constprop.0+0x341/0x440 drivers/hid/hid-core.c:2110
hid_irq_in+0x35e/0x870 drivers/hid/usbhid/hid-core.c:285
__usb_hcd_giveback_urb+0x389/0x6e0 drivers/usb/core/hcd.c:1650
usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
dummy_timer+0x17c3/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1988
__run_hrtimer kernel/time/hrtimer.c:1691 [inline]
__hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1755
hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1772
handle_softirqs+0x206/0x8d0 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu kernel/softirq.c:637 [inline]
irq_exit_rcu+0xac/0x110 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1037
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:get_current arch/x86/include/asm/current.h:49 [inline]
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:122 [inline]
RIP: 0010:lock_is_held_type+0x35/0x150 kernel/locking/lockdep.c:5890
Code: bd ff ff ff ff 41 54 55 53 48 83 ec 08 8b 0d ea d3 67 03 85 c9 0f 84 dd 00 00 00 65 8b 05 2b 0c 14 79 85 c0 0f 85 ce 00 00 00 <65> 4c 8b 25 93 46 15 79 41 8b 94 24 94 0a 00 00 85 d2 0f 85 b6 00
RSP: 0018:ffffc90003d0f840 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff920007a1f12 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff88ebb040
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8727e760
R13: 00000000ffffffff R14: ffffc90003d0fab8 R15: 00007fe8bee64000
lock_is_held include/linux/lockdep.h:249 [inline]
__might_resched+0x4ca/0x5e0 kernel/sched/core.c:8593
down_write+0x6f/0x200 kernel/locking/rwsem.c:1576
i_mmap_lock_write include/linux/fs.h:507 [inline]
vma_link_file+0x7b/0x120 mm/vma.c:1582
mmap_region+0x16ec/0x2900 mm/mmap.c:1515
do_mmap+0xc00/0xfc0 mm/mmap.c:496
vm_mmap_pgoff+0x1ba/0x350 mm/util.c:588
ksys_mmap_pgoff+0x32c/0x5c0 mm/mmap.c:542
__do_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline]
__se_sys_mmap arch/x86/kernel/sys_x86_64.c:79 [inline]
__x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:79
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe8bf117b74
Code: 63 08 44 89 e8 5b 41 5c 41 5d c3 41 89 ca 41 f7 c1 ff 0f 00 00 74 0c c7 05 f5 46 01 00 16 00 00 00 eb 17 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 0c f7 d8 89 05 dc 46 01 00 48 83 c8 ff c3 0f
RSP: 002b:00007ffde3a3dad8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007ffde3a3db50 RCX: 00007fe8bf117b74
RDX: 0000000000000001 RSI: 0000000000007000 RDI: 00007fe8bee64000
RBP: 00007ffde3a3deb0 R08: 0000000000000000 R09: 000000000001b000
R10: 0000000000000812 R11: 0000000000000246 R12: 00007fe8bf0f4fc0
R13: 00007ffde3a3df38 R14: 000000000001a43e R15: 0000000000000000
</TASK>
</TASK>
task:kworker/u8:7 state:R running task stack:32568 pid:14340 tgid:14340 ppid:3242 flags:0x00004000
Call Trace:
<TASK>
__switch_to_asm+0x70/0x70
</TASK>
task:modprobe state:R running task stack:25408 pid:14342 tgid:14342 ppid:2678 flags:0x00004002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
do_exit+0x1de7/0x2ce0 kernel/exit.c:990
do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2bc08caa90
RSP: 002b:00007ffd5b9ec338 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f2bc09bb860 RCX: 00007f2bc08caa90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f2bc09bb860 R08: 0000000000000001 R09: 41db0d9426285180
R10: 00007ffd5b9ec1f0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f2bc09bf658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:24704 pid:14346 tgid:14346 ppid:2678 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
</TASK>
task:kworker/u8:6 state:R running task stack:28784 pid:14347 tgid:14347 ppid:1131 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
</TASK>
task:kworker/u8:3 state:R running task stack:32568 pid:14354 tgid:14354 ppid:46 flags:0x00004000
Call Trace:
<TASK>
__switch_to_asm+0x70/0x70
</TASK>
task:modprobe state:R running task stack:25408 pid:14355 tgid:14355 ppid:1131 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
do_exit+0x1de7/0x2ce0 kernel/exit.c:990
do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5de21e6a90
RSP: 002b:00007fff1611ff28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f5de22d7860 RCX: 00007f5de21e6a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f5de22d7860 R08: 0000000000000001 R09: 46780758b7766d57
R10: 00007fff1611fde0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f5de22db658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25408 pid:14359 tgid:14359 ppid:1131 flags:0x00000000
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:14366 tgid:14366 ppid:2678 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
</TASK>
task:modprobe state:R running task stack:25136 pid:14373 tgid:14373 ppid:2678 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
do_exit+0x1de7/0x2ce0 kernel/exit.c:990
do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa2dfe27a90
RSP: 002b:00007ffd872a30e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fa2dff18860 RCX: 00007fa2dfe27a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fa2dff18860 R08: 0000000000000001 R09: 5f652800365ccb43
R10: 00007ffd872a2fa0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fa2dff1c658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25136 pid:14379 tgid:14379 ppid:2678 flags:0x00000000
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:14384 tgid:14384 ppid:46 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:14387 tgid:14387 ppid:46 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
</TASK>
task:modprobe state:R running task stack:24704 pid:14393 tgid:14393 ppid:2678 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:24704 pid:14398 tgid:14398 ppid:2678 flags:0x00000000
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:14401 tgid:14401 ppid:3242 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:24704 pid:14410 tgid:14410 ppid:3242 flags:0x00000000
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:24704 pid:14421 tgid:14421 ppid:46 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:23984 pid:14430 tgid:14430 ppid:46 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
do_exit+0x1de7/0x2ce0 kernel/exit.c:990
do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f622cd7da90
RSP: 002b:00007ffd1393cf78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f622ce6e860 RCX: 00007f622cd7da90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f622ce6e860 R08: 0000000000000001 R09: dfc6ef523a5d942e
R10: 00007ffd1393ce30 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f622ce72658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25408 pid:14435 tgid:14435 ppid:3242 flags:0x00004002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
do_exit+0x1de7/0x2ce0 kernel/exit.c:990
do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd05f2dca90
RSP: 002b:00007ffdd773bdf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fd05f3cd860 RCX: 00007fd05f2dca90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fd05f3cd860 R08: 0000000000000001 R09: 4535f641cc4c0f28
R10: 00007ffdd773bcb0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fd05f3d1658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25408 pid:14440 tgid:14440 ppid:2678 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
do_exit+0x1de7/0x2ce0 kernel/exit.c:990
do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe7ecd82a90
RSP: 002b:00007ffcc7a7bf68 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fe7ece73860 RCX: 00007fe7ecd82a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fe7ece73860 R08: 0000000000000001 R09: 2fdb21dbc668df0d
R10: 00007ffcc7a7be20 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fe7ece77658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25408 pid:14446 tgid:14446 ppid:2678 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
</TASK>
task:modprobe state:R running task stack:25408 pid:14448 tgid:14448 ppid:46 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
do_exit+0x1de7/0x2ce0 kernel/exit.c:990
do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7d319bfa90
RSP: 002b:00007ffe4a0e5cd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f7d31ab0860 RCX: 00007f7d319bfa90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f7d31ab0860 R08: 0000000000000001 R09: df5d5dca07fffb84
R10: 00007ffe4a0e5b90 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f7d31ab4658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25408 pid:14453 tgid:14453 ppid:2678 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
do_exit+0x1de7/0x2ce0 kernel/exit.c:990
do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff382b23a90
RSP: 002b:00007fffced1e578 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007ff382c14860 RCX: 00007ff382b23a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007ff382c14860 R08: 0000000000000001 R09: 48767732b8a00d20
R10: 00007fffced1e430 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007ff382c18658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:23984 pid:14458 tgid:14458 ppid:1131 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6854
__cond_resched+0x1b/0x30 kernel/sched/core.c:7192
</TASK>
task:modprobe state:R running task stack:24704 pid:14462 tgid:14462 ppid:1131 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
</TASK>
task:modprobe state:R running task stack:24416 pid:14466 tgid:14466 ppid:46 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
do_exit+0x1de7/0x2ce0 kernel/exit.c:990
do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa2b9c04a90
RSP: 002b:00007ffcac65ac18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fa2b9cf5860 RCX: 00007fa2b9c04a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fa2b9cf5860 R08: 0000000000000001 R09: 44ac5dd007bc47d9
R10: 00007ffcac65aad0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fa2b9cf9658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25408 pid:14472 tgid:14472 ppid:46 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:14475 tgid:14475 ppid:46 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:14482 tgid:14482 ppid:2678 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
do_exit+0x1de7/0x2ce0 kernel/exit.c:990
do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f564677ca90
RSP: 002b:00007ffea046cdf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f564686d860 RCX: 00007f564677ca90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f564686d860 R08: 0000000000000001 R09: 93e6ddf45d0859c7
R10: 00007ffea046ccb0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f5646871658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25408 pid:14488 tgid:14488 ppid:2678 flags:0x00000000
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:14497 tgid:14497 ppid:2678 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
</TASK>
task:modprobe state:R running task stack:25408 pid:14504 tgid:14504 ppid:3242 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
do_exit+0x1de7/0x2ce0 kernel/exit.c:990
do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe9ec399a90
RSP: 002b:00007ffee4562488 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fe9ec48a860 RCX: 00007fe9ec399a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fe9ec48a860 R08: 0000000000000001 R09: 0fccf8818db050ca
R10: 00007ffee4562340 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fe9ec48e658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25136 pid:14509 tgid:14509 ppid:1131 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:14512 tgid:14512 ppid:3242 flags:0x00000000
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:14515 tgid:14515 ppid:1131 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
</TASK>
task:modprobe state:R running task stack:25408 pid:14516 tgid:14516 ppid:46 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
do_exit+0x1de7/0x2ce0 kernel/exit.c:990
do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcaccae7a90
RSP: 002b:00007fff73141d48 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fcaccbd8860 RCX: 00007fcaccae7a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fcaccbd8860 R08: 0000000000000001 R09: a45b974d1de31a4f
R10: 00007fff73141c00 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fcaccbdc658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25408 pid:14521 tgid:14521 ppid:46 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
do_exit+0x1de7/0x2ce0 kernel/exit.c:990
do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4322dd7a90
RSP: 002b:00007fffc607e378 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f4322ec8860 RCX: 00007f4322dd7a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f4322ec8860 R08: 0000000000000001 R09: 5c992bf7597daffb
R10: 00007fffc607e230 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f4322ecc658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:24416 pid:14526 tgid:14526 ppid:1131 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
do_exit+0x1de7/0x2ce0 kernel/exit.c:990
do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f638696fa90
RSP: 002b:00007ffe0066ce18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f6386a60860 RCX: 00007f638696fa90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f6386a60860 R08: 0000000000000001 R09: c9a8bb5340cb61d8
R10: 00007ffe0066ccd0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f6386a64658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:24416 pid:14532 tgid:14532 ppid:1131 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
</TASK>
task:modprobe state:R running task stack:24704 pid:14540 tgid:14540 ppid:3242 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
do_exit+0x1de7/0x2ce0 kernel/exit.c:990
do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3a9b2d4a90
RSP: 002b:00007ffe77381b78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f3a9b3c5860 RCX: 00007f3a9b2d4a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f3a9b3c5860 R08: 0000000000000001 R09: 755e1725d4f4842a
R10: 00007ffe77381a30 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f3a9b3c9658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:24704 pid:14545 tgid:14545 ppid:46 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
do_exit+0x1de7/0x2ce0 kernel/exit.c:990
do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f560707fa90
RSP: 002b:00007ffe65145b28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f5607170860 RCX: 00007f560707fa90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f5607170860 R08: 0000000000000001 R09: b546563a3277b2da
R10: 00007ffe651459e0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f5607174658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:24704 pid:14550 tgid:14550 ppid:2678 flags:0x00000000
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:14558 tgid:14558 ppid:3242 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
</TASK>
task:modprobe state:R running task stack:25408 pid:14564 tgid:14564 ppid:3242 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
__pfx_lock_release+0x10/0x10 kernel/locking/lockdep.c:5346
</TASK>
task:modprobe state:R running task stack:25408 pid:14569 tgid:14569 ppid:2678 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
</TASK>
task:modprobe state:R running task stack:23984 pid:14574 tgid:14574 ppid:46 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:14577 tgid:14577 ppid:46 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:14584 tgid:14584 ppid:2678 flags:0x00000000
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:14585 tgid:14585 ppid:3242 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
</TASK>
task:modprobe state:R running task stack:25408 pid:14587 tgid:14587 ppid:2678 flags:0x00000000
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:24704 pid:14599 tgid:14599 ppid:1131 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:14602 tgid:14602 ppid:1131 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
</TASK>
task:modprobe state:R running task stack:25136 pid:14607 tgid:14607 ppid:2678 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
</TASK>
task:modprobe state:R running task stack:25136 pid:14612 tgid:14612 ppid:1131 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
do_exit+0x1de7/0x2ce0 kernel/exit.c:990
do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5193264a90
RSP: 002b:00007ffe01417e78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f5193355860 RCX: 00007f5193264a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f5193355860 R08: 0000000000000001 R09: 5005ebcf5767047b
R10: 00007ffe01417d30 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f5193359658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25408 pid:14618 tgid:14618 ppid:1131 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:14621 tgid:14621 ppid:1131 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
</TASK>
task:modprobe state:R running task stack:24704 pid:14629 tgid:14629 ppid:46 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:24704 pid:14634 tgid:14634 ppid:3242 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:14636 tgid:14636 ppid:1131 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675
do_task_dead+0xd6/0x110 kernel/sched/core.c:6691
do_exit+0x1de7/0x2ce0 kernel/exit.c:990
do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8d8d1ffa90
RSP: 002b:00007ffe30417e48 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f8d8d2f0860 RCX: 00007f8d8d1ffa90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f8d8d2f0860 R08: 0000000000000001 R09: 44dca94248773cd7
R10: 00007ffe30417d00 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f8d8d2f4658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25136 pid:14642 tgid:14642 ppid:3242 flags:0x00000002
Call Trace:
<TASK>

---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
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syzbot will keep track of this issue. See:
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If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title

If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.

If you want to overwrite report's subsystems, reply with:
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(See the list of subsystem names on the web dashboard)

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#syz dup: exact-subject-of-another-report

If you want to undo deduplication, reply with:
#syz undup

Lorenzo Stoakes

unread,

Oct 15, 2024, 4:44:35 AM10/15/24

to syzbot, Liam.H...@oracle.com, ak...@linux-foundation.org, linux...@vger.kernel.org, linux-...@vger.kernel.org, linu...@kvack.org, linu...@vger.kernel.org, syzkall...@googlegroups.com, vba...@suse.cz

On Mon, Oct 14, 2024 at 08:02:26AM -0700, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 4a9fe2a8ac53 dt-bindings: usb: dwc3-imx8mp: add compatible..

Strange that this hit in the USB tree.

It's possible this is another variant of the problems introduced by the
maple tree bug fixed in [0] as this has been seen to result in hanged
processes due to memory corruption.

This is sitting in the unstable hotfixes branch in mm so not yet in an rc,
so it is possible. The issue is that it manifests in potentially
unpredictable ways so it may be this or it may not.

In any case the vma_link_file() stall seems likely to be due to contended
lock, and since we are pulling the address_space against which we take that
lock from a vma, which could be a UAF due to the bug, this seems plausible.

On the other hand, I notice that CONFIG_DEBUG_VM_MAPLE_TREE is enabled here
which causes very expensive validation (not in vma_link_file() but
elsewhere) which can cause RCU stalls.

[0]:https://lore.kernel.org/linux-mm/48b349a2a0f7c76e18772712d0997a5e12a...@oracle.com/

Either way, it's probably worth retrying on a repo with this fix so...

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/ mm-hotfixes-unstable

> git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
> console output: https://syzkaller.appspot.com/x/log.txt?x=13425040580000
> kernel config: https://syzkaller.appspot.com/x/.config?x=4510af5d637450fb
> dashboard link: https://syzkaller.appspot.com/bug?extid=ce483fd06e2061f44f5d
> compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17336fd0580000
>

> downloadable assets:

syzbot

unread,

Oct 15, 2024, 6:32:05 AM10/15/24

to ak...@linux-foundation.org, liam.h...@oracle.com, linux...@vger.kernel.org, linux-...@vger.kernel.org, linu...@kvack.org, linu...@vger.kernel.org, lorenzo...@oracle.com, syzkall...@googlegroups.com, vba...@suse.cz

Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
INFO: rcu detected stall in do_syscall_64

rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-...D } 2664 jiffies s: 1445 root: 0x2/.

rcu: blocking rcu_node structures (internal RCU debug):

Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1

CPU: 1 UID: 0 PID: 2532 Comm: acpid Not tainted 6.12.0-rc2-syzkaller-00039-g00c5e66c934c #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:io_serial_in+0x87/0xb0 drivers/tty/serial/8250/8250_port.c:407

Code: 79 b5 fe 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 1a 66 03 5d 40 89 da ec <5b> 0f b6 c0 5d 41 5c c3 cc cc cc cc e8 f8 f4 0d ff eb a2 e8 81 f5

RSP: 0018:ffffc900001b7f08 EFLAGS: 00000002
RAX: dffffc0000000060 RBX: 00000000000003fd RCX: 0000000000000000

RDX: 00000000000003fd RSI: ffffffff82a065b0 RDI: ffffffff93633660
RBP: ffffffff93633620 R08: 0000000000000001 R09: 000000000000001f

R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000

R13: 0000000000000020 R14: fffffbfff26c671e R15: dffffc0000000000
FS: 00007fce9143b740(0000) GS:ffff8881f5900000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 0000001b2ce5ffff CR3: 0000000115abe000 CR4: 00000000003506f0

RIP: 0010:do_syscall_x64 arch/x86/entry/common.c:51 [inline]
RIP: 0010:do_syscall_64+0xc0/0x250 arch/x86/entry/common.c:83
Code: c6 bf 15 79 48 8b 50 08 f6 c2 3f 0f 85 3c 01 00 00 90 90 41 81 fc ce 01 00 00 0f 87 43 01 00 00 41 81 fc cf 01 00 00 48 19 c0 <44> 89 e6 48 89 df 21 c6 e8 d3 4b 12 fa 48 89 43 50 90 48 89 df e8
RSP: 0018:ffffc9000182ff28 EFLAGS: 00000297
RAX: ffffffffffffffff RBX: ffffc9000182ff58 RCX: 1ffffffff14ac131
RDX: 0000000000000000 RSI: ffffffff8727f1c0 RDI: ffffffff8746eb40
RBP: ffffc9000182ff48 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8a56428f R11: 0000000000000000 R12: 000000000000000e
R13: 000000000000000e R14: 0000000000000000 R15: 0000000000000000
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fce914b1773
Code: 00 f3 a5 48 8d 74 24 88 48 b9 ff ff ff 7f fe ff ff ff 48 21 c8 48 89 44 24 88 41 ba 08 00 00 00 44 89 c7 b8 0e 00 00 00 0f 05 <45> 31 c0 3d 00 f0 ff ff 76 06 41 89 c0 41 f7 d8 44 89 c0 5a c3 41
RSP: 002b:00007ffc56b7f150 EFLAGS: 00000246 ORIG_RAX: 000000000000000e
RAX: ffffffffffffffda RBX: 0000557975a80906 RCX: 00007fce914b1773
RDX: 0000000000000000 RSI: 0000557975a86480 RDI: 0000000000000000
RBP: 0000000000000007 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000008 R11: 0000000000000246 R12: 00007ffc56b7f258
R13: 0000557975a80178 R14: 0000000000000001 R15: 000000000000000a
</TASK>
</TASK>

Showing all locks held in the system:
7 locks held by kworker/0:1/9:
#0: ffff8881066e5948 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc9000009fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff8881097a7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff8881097a7190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
#3: ffff888106ab5190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff888106ab5190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
#4: ffff88812c375160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff88812c375160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
#5: ffff888119b1da20 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#5: ffff888119b1da20 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
#6: ffffffff89bd6b08 (input_mutex){+.+.}-{3:3}, at: input_register_device+0x98a/0x1110 drivers/input/input.c:2463
2 locks held by kworker/u8:4/54:
#0: ffff888100089148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90000547d80 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
2 locks held by kworker/u8:5/236:
#0: ffff888100089148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc9000163fd80 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
7 locks held by kworker/0:2/679:
#0: ffff8881066e5948 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90001c1fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff88810977f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff88810977f190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
#3: ffff888105a8d190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff888105a8d190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
#4: ffff88812c377160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff88812c377160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
#5: ffff88812bf35a20 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#5: ffff88812bf35a20 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
#6: ffffffff89bd6b08 (input_mutex){+.+.}-{3:3}, at: input_register_device+0x98a/0x1110 drivers/input/input.c:2463
4 locks held by acpid/2532:
#0: ffff8881082a5230 (&dev->event_lock){..-.}-{2:2}, at: input_event drivers/input/input.c:397 [inline]
#0: ffff8881082a5230 (&dev->event_lock){..-.}-{2:2}, at: input_event+0x70/0xa0 drivers/input/input.c:390
#1: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#1: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#1: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: input_pass_values+0x8b/0x8e0 drivers/input/input.c:118
#2: ffffffff89387a98 (kbd_event_lock){..-.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
#2: ffffffff89387a98 (kbd_event_lock){..-.}-{2:2}, at: kbd_event+0x8a/0x17a0 drivers/tty/vt/keyboard.c:1535
#3: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#3: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#3: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720
2 locks held by getty/2605:
#0: ffff88810f74d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900000432f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
11 locks held by kworker/0:3/6516:
#0: ffff8881066e5948 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc900026cfd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff888109797190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff888109797190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
#3: ffff888130c4e190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff888130c4e190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
#4: ffff88812c376160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff88812c376160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
#5: ffff888131021a20 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#5: ffff888131021a20 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
#6: ffffffff89bd6b08 (input_mutex){+.+.}-{3:3}, at: input_register_device+0x98a/0x1110 drivers/input/input.c:2463
#7: ffff88811aa2e2f0 (&led_cdev->led_access){+.+.}-{3:3}, at: led_classdev_register_ext+0x51b/0x9e0 drivers/leds/led-class.c:515
#8: ffffffff892bb7d0 (triggers_list_lock){++++}-{3:3}, at: led_trigger_set_default drivers/leds/led-triggers.c:284 [inline]
#8: ffffffff892bb7d0 (triggers_list_lock){++++}-{3:3}, at: led_trigger_set_default+0x5c/0x2a0 drivers/leds/led-triggers.c:276
#9: ffff88811aa2e208 (&led_cdev->trigger_lock){+.+.}-{3:3}, at: led_trigger_set_default drivers/leds/led-triggers.c:285 [inline]
#9: ffff88811aa2e208 (&led_cdev->trigger_lock){+.+.}-{3:3}, at: led_trigger_set_default+0x70/0x2a0 drivers/leds/led-triggers.c:276
#10: ffffffff88ec69f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:297
1 lock held by syz.3.23/8804:
#0: ffffffff88ec69f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:329
3 locks held by syz-executor/8833:
#0: ffff888113c743f8 (sb_writers#5){.+.+}-{0:0}, at: filename_create+0x10d/0x530 fs/namei.c:4019
#1: ffff88811061b508 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
#1: ffff88811061b508 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x1c2/0x530 fs/namei.c:4026
#2: ffff888113c88958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
2 locks held by syz-executor/8851:
#0: ffff888113c743f8 (sb_writers#5){.+.+}-{0:0}, at: filename_create+0x10d/0x530 fs/namei.c:4019
#1: ffff88811061b508 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
#1: ffff88811061b508 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x1c2/0x530 fs/namei.c:4026
2 locks held by syz-executor/8852:
#0: ffff888113c743f8 (sb_writers#5){.+.+}-{0:0}, at: filename_create+0x10d/0x530 fs/namei.c:4019
#1: ffff88811061b508 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
#1: ffff88811061b508 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x1c2/0x530 fs/namei.c:4026
1 lock held by modprobe/9577:

=============================================

task:init state:S stack:22000 pid:1 tgid:1 ppid:0 flags:0x00000002

Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675

__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6767
schedule_hrtimeout_range_clock+0x369/0x3b0 kernel/time/hrtimer.c:2272
do_sigtimedwait+0x42f/0x5c0 kernel/signal.c:3665
__do_sys_rt_sigtimedwait kernel/signal.c:3709 [inline]
__se_sys_rt_sigtimedwait kernel/signal.c:3687 [inline]
__x64_sys_rt_sigtimedwait+0x1ec/0x2e0 kernel/signal.c:3687

do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f

RIP: 0033:0x7fd5ca08a23c
RSP: 002b:00007ffc7f2936d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000080
RAX: ffffffffffffffda RBX: 00007fd5ca2c013c RCX: 00007fd5ca08a23c
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fd5ca2c54a8
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc7f293738 R14: 000055ff5f932169 R15: 00007fd5ca2fca80
</TASK>
task:kthreadd state:S stack:27024 pid:2 tgid:2 ppid:0 flags:0x00004000

Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675

__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6767
kthreadd+0x5ba/0x7d0 kernel/kthread.c:755
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
task:pool_workqueue_ state:S stack:30464 pid:3 tgid:3 ppid:2 flags:0x00004000

Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675

__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6767
kthread_worker_fn+0x502/0xba0 kernel/kthread.c:851
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
task:kworker/R-rcu_g state:I stack:30288 pid:4 tgid:4 ppid:2 flags:0x00004000

Call Trace:
<TASK>
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6675

__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6767
rescuer_thread+0x946/0xe20 kernel/workqueue.c:3541
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
task:kworker/R-netns state:I stack:30832 pid:7 tgid:7 ppid:2 flags:0x00004000

Tested on:

commit: 00c5e66c MAINTAINERS: kasan, kcov: add bugzilla links
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/ mm-hotfixes-unstable
console output: https://syzkaller.appspot.com/x/log.txt?x=127a045f980000
kernel config: https://syzkaller.appspot.com/x/.config?x=e56f1fcedfd0b54e

dashboard link: https://syzkaller.appspot.com/bug?extid=ce483fd06e2061f44f5d
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40

Note: no patches were applied.

Lorenzo Stoakes

unread,

Oct 15, 2024, 6:44:27 AM10/15/24

to syzbot, ak...@linux-foundation.org, liam.h...@oracle.com, linux...@vger.kernel.org, linux-...@vger.kernel.org, linu...@kvack.org, linu...@vger.kernel.org, syzkall...@googlegroups.com, vba...@suse.cz

On Tue, Oct 15, 2024 at 03:32:03AM -0700, syzbot wrote:
> Hello,
>
> syzbot has tested the proposed patch but the reproducer is still triggering an issue:
> INFO: rcu detected stall in do_syscall_64

OK I think we can rule out the maple tree bug.

I don't see vma_link_file() in the splats below so I'm thinking this is
unrelated to mm, probably?

USB guys? :)

Liam R. Howlett

unread,

Oct 15, 2024, 4:05:45 PM10/15/24

to syzbot, ak...@linux-foundation.org, linux...@vger.kernel.org, linux-...@vger.kernel.org, linu...@kvack.org, linu...@vger.kernel.org, lorenzo...@oracle.com, syzkall...@googlegroups.com, vba...@suse.cz

* syzbot <syzbot+ce483f...@syzkaller.appspotmail.com> [241014 11:02]:

> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 4a9fe2a8ac53 dt-bindings: usb: dwc3-imx8mp: add compatible..
> git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
> console output: https://syzkaller.appspot.com/x/log.txt?x=13425040580000
> kernel config: https://syzkaller.appspot.com/x/.config?x=4510af5d637450fb
> dashboard link: https://syzkaller.appspot.com/bug?extid=ce483fd06e2061f44f5d
> compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17336fd0580000
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/883c5319cb52/disk-4a9fe2a8.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/caf4421ed2ef/vmlinux-4a9fe2a8.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/d8e3beb01d49/bzImage-4a9fe2a8.xz
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+ce483f...@syzkaller.appspotmail.com
>

Let's see if this still exists. I suspect so, but maybe not.

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/ mm-hotfixes-unstable

syzbot

unread,

Oct 15, 2024, 4:27:05 PM10/15/24

Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:

INFO: rcu detected stall in corrupted

rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {

0-...D } 2647 jiffies s: 1489 root: 0x1/.

rcu: blocking rcu_node structures (internal RCU debug):

Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 2536 Comm: acpid Not tainted 6.12.0-rc3-syzkaller-00033-g80bf308c69a9 #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024

RIP: 0010:format_decode+0x94d/0xba0 lib/vsprintf.c:2571
Code: 41 bd 4c 00 00 00 48 89 5c 24 38 e9 fb fa ff ff e8 68 6a 6f fa 31 f6 31 ff e8 3f 6c 6f fa e8 5a 6a 6f fa 31 db e9 82 f9 ff ff <e8> 4e 6a 6f fa 48 8d 7c 24 38 e8 24 d5 ff ff 48 8b 6c 24 38 0f b6
RSP: 0000:ffffc900016aea48 EFLAGS: 00000097
RAX: 0000000000000000 RBX: ffffffff8728c721 RCX: ffffffff86e6726f
RDX: ffff888115f1ba80 RSI: 0000000000000009 RDI: 0000000000000005
RBP: ffffffff8728c722 R08: 0000000000000005 R09: 0000000000000009
R10: 0000000000000005 R11: 0000000000040348 R12: ffffc900016aeb48
R13: ffffffff8728c721 R14: 0000000000000035 R15: 0000000000000005
FS: 00007fe77c367740(0000) GS:ffff8881f5800000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 0000557a1e480818 CR3: 0000000115f98000 CR4: 00000000003506f0

DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>

<TASK>
vsnprintf+0x13d/0x1880 lib/vsprintf.c:2755
sprintf+0xcd/0x110 lib/vsprintf.c:3007
print_time kernel/printk/printk.c:1362 [inline]
info_print_prefix+0x25c/0x350 kernel/printk/printk.c:1388
record_print_text+0x141/0x400 kernel/printk/printk.c:1437
printk_get_next_message+0x2a6/0x670 kernel/printk/printk.c:2978
console_emit_next_record kernel/printk/printk.c:3046 [inline]
console_flush_all+0x6ec/0xc60 kernel/printk/printk.c:3180

__console_flush_and_unlock kernel/printk/printk.c:3239 [inline]
console_unlock+0xd9/0x210 kernel/printk/printk.c:3279
vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2407
vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:68
_printk+0xc8/0x100 kernel/printk/printk.c:2432
printk_stack_address arch/x86/kernel/dumpstack.c:72 [inline]
show_trace_log_lvl+0x1b7/0x3d0 arch/x86/kernel/dumpstack.c:285

sched_show_task kernel/sched/core.c:7589 [inline]
sched_show_task+0x3f0/0x5f0 kernel/sched/core.c:7564
show_state_filter+0xee/0x320 kernel/sched/core.c:7634

sysvec_apic_timer_interrupt+0x43/0xb0 arch/x86/kernel/apic/apic.c:1037
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0033:0x7fe77c3dd773

Code: 00 f3 a5 48 8d 74 24 88 48 b9 ff ff ff 7f fe ff ff ff 48 21 c8 48 89 44 24 88 41 ba 08 00 00 00 44 89 c7 b8 0e 00 00 00 0f 05 <45> 31 c0 3d 00 f0 ff ff 76 06 41 89 c0 41 f7 d8 44 89 c0 5a c3 41

RSP: 002b:00007ffcef9c0fa0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 000055591f199906 RCX: 00007fe77c3dd773
RDX: 0000000000000000 RSI: 000055591f19f480 RDI: 0000000000000000

RBP: 0000000000000007 R08: 0000000000000000 R09: 0000000000000001

R10: 0000000000000008 R11: 0000000000000246 R12: 00007ffcef9c10a8
R13: 000055591f199178 R14: 0000000000000001 R15: 000000000000000a
</TASK>
</TASK>
task:kworker/u8:1 state:R running task stack:32568 pid:9565 tgid:9565 ppid:28 flags:0x00004000

Call Trace:
<TASK>
__switch_to_asm+0x70/0x70
</TASK>

task:modprobe state:R running task stack:25424 pid:9568 tgid:9568 ppid:1114 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
</TASK>
task:kworker/u8:9 state:R running task stack:28784 pid:9576 tgid:9576 ppid:1148 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6861
__cond_resched+0x1b/0x30 kernel/sched/core.c:7199
_cond_resched include/linux/sched.h:2031 [inline]
stop_one_cpu+0x112/0x190 kernel/stop_machine.c:151
sched_exec+0x1dc/0x270 kernel/sched/core.c:5453
bprm_execve fs/exec.c:1838 [inline]
bprm_execve+0x46c/0x1950 fs/exec.c:1821
</TASK>
task:modprobe state:R running task stack:25424 pid:9585 tgid:9585 ppid:46 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25424 pid:9599 tgid:9599 ppid:1114 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:24720 pid:9608 tgid:9608 ppid:1148 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

do_exit+0x1de7/0x2ce0 kernel/exit.c:990
do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
__do_sys_exit_group kernel/exit.c:1099 [inline]
__se_sys_exit_group kernel/exit.c:1097 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f

RIP: 0033:0x7f51cee31a90
RSP: 002b:00007ffd78235dd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f51cef22860 RCX: 00007f51cee31a90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007f51cef22860 R08: 0000000000000001 R09: d9f10af76f91c837
R10: 00007ffd78235c90 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f51cef26658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:24416 pid:9615 tgid:9615 ppid:1114 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7febdbac2a90
RSP: 002b:00007ffdc4cdeff8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007febdbbb3860 RCX: 00007febdbac2a90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007febdbbb3860 R08: 0000000000000001 R09: 9c513921461b8e44
R10: 00007ffdc4cdeeb0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007febdbbb7658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25424 pid:9621 tgid:9621 ppid:11 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7f439b8b7a90
RSP: 002b:00007fffe0ac2d68 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f439b9a8860 RCX: 00007f439b8b7a90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007f439b9a8860 R08: 0000000000000001 R09: ff9d4db23f41e35a
R10: 00007fffe0ac2c20 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f439b9ac658 R15: 0000000000000001
</TASK>
task:modprobe state:D stack:25424 pid:9627 tgid:9627 ppid:1114 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:24720 pid:9640 tgid:9640 ppid:1114 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
</TASK>
task:modprobe state:R running task stack:24416 pid:9649 tgid:9649 ppid:11 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7f9ff0b0ba90
RSP: 002b:00007ffcc7ed1848 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f9ff0bfc860 RCX: 00007f9ff0b0ba90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007f9ff0bfc860 R08: 0000000000000001 R09: 53b7f4bb0ff00e10
R10: 00007ffcc7ed1700 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f9ff0c00658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25424 pid:9656 tgid:9656 ppid:1114 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
__pfx___lock_acquire+0x10/0x10 kernel/locking/lockdep.c:4387
</TASK>
task:modprobe state:R running task stack:25424 pid:9664 tgid:9664 ppid:1114 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7f260c278a90
RSP: 002b:00007ffca8cbcb18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f260c369860 RCX: 00007f260c278a90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007f260c369860 R08: 0000000000000001 R09: ec1b067fce940b65
R10: 00007ffca8cbc9d0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f260c36d658 R15: 0000000000000001
</TASK>
task:kworker/u8:0 state:R running task stack:32568 pid:9671 tgid:9671 ppid:11 flags:0x00004000

Call Trace:
<TASK>
__switch_to_asm+0x70/0x70
</TASK>

task:modprobe state:R running task stack:25424 pid:9672 tgid:9672 ppid:1114 flags:0x00004002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7f395cc9ea90
RSP: 002b:00007ffff1d03df8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f395cd8f860 RCX: 00007f395cc9ea90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007f395cd8f860 R08: 0000000000000001 R09: 0c83ee7b55e5651c
R10: 00007ffff1d03cb0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f395cd93658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25136 pid:9678 tgid:9678 ppid:28 flags:0x00004002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7f4fb9369a90
RSP: 002b:00007ffde76a6918 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f4fb945a860 RCX: 00007f4fb9369a90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007f4fb945a860 R08: 0000000000000001 R09: 56a7058e5d32bb87
R10: 00007ffde76a67d0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f4fb945e658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25424 pid:9684 tgid:9684 ppid:1148 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25424 pid:9694 tgid:9694 ppid:28 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7f306776fa90
RSP: 002b:00007ffe0ff593a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f3067860860 RCX: 00007f306776fa90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007f3067860860 R08: 0000000000000001 R09: 7fe3f123c3d90a52
R10: 00007ffe0ff59260 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f3067864658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25136 pid:9701 tgid:9701 ppid:1148 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
</TASK>
task:modprobe state:R running task stack:25344 pid:9710 tgid:9710 ppid:1114 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
</TASK>
task:modprobe state:R running task stack:24000 pid:9714 tgid:9714 ppid:1114 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7fe83ca73a90
RSP: 002b:00007fff91de4128 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fe83cb64860 RCX: 00007fe83ca73a90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007fe83cb64860 R08: 0000000000000001 R09: 0380a4352b815b7d
R10: 00007fff91de3fe0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fe83cb68658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:24720 pid:9719 tgid:9719 ppid:28 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:24720 pid:9726 tgid:9726 ppid:28 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
</TASK>
task:modprobe state:R running task stack:24720 pid:9734 tgid:9734 ppid:28 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7f880ede0a90
RSP: 002b:00007ffca15eb9f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f880eed1860 RCX: 00007f880ede0a90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007f880eed1860 R08: 0000000000000001 R09: 6855b1290ac23e74
R10: 00007ffca15eb8b0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f880eed5658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25136 pid:9737 tgid:9737 ppid:1148 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7fd1ff7caa90
RSP: 002b:00007fff7f497088 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fd1ff8bb860 RCX: 00007fd1ff7caa90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007fd1ff8bb860 R08: 0000000000000001 R09: 93c7e6092e4e8d94
R10: 00007fff7f496f40 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fd1ff8bf658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:24720 pid:9741 tgid:9741 ppid:1114 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7f3b768dca90
RSP: 002b:00007ffed6373f08 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f3b769cd860 RCX: 00007f3b768dca90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007f3b769cd860 R08: 0000000000000001 R09: cbb88f32d31ba940
R10: 00007ffed6373dc0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f3b769d1658 R15: 0000000000000001
</TASK>
task:kworker/u8:1 state:R running task stack:32568 pid:9750 tgid:9750 ppid:28 flags:0x00004000

Call Trace:
<TASK>
__switch_to_asm+0x70/0x70
</TASK>

task:modprobe state:R running task stack:24720 pid:9752 tgid:9752 ppid:1114 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
</TASK>
task:kworker/u8:7 state:R running task stack:32568 pid:9755 tgid:9755 ppid:1114 flags:0x00004000
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25424 pid:9760 tgid:9760 ppid:1148 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
</TASK>
task:kworker/u8:1 state:R running task stack:32568 pid:9762 tgid:9762 ppid:28 flags:0x00004000

Call Trace:
<TASK>
__switch_to_asm+0x70/0x70
</TASK>

task:modprobe state:R running task stack:24720 pid:9766 tgid:9766 ppid:46 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
</TASK>
task:modprobe state:R running task stack:24720 pid:9772 tgid:9772 ppid:46 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7f42d3bdba90
RSP: 002b:00007fffe30e2e08 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f42d3ccc860 RCX: 00007f42d3bdba90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007f42d3ccc860 R08: 0000000000000001 R09: 4e69d63dc7a7fcc0
R10: 00007fffe30e2cc0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f42d3cd0658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25424 pid:9778 tgid:9778 ppid:1114 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25424 pid:9786 tgid:9786 ppid:11 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:24720 pid:9796 tgid:9796 ppid:1114 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7f68f99e1a90
RSP: 002b:00007ffe63673f58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f68f9ad2860 RCX: 00007f68f99e1a90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007f68f9ad2860 R08: 0000000000000001 R09: f47c3fb77550af2e
R10: 00007ffe63673e10 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f68f9ad6658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:24720 pid:9801 tgid:9801 ppid:46 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7fb781c83a90
RSP: 002b:00007ffd60d9ea28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fb781d74860 RCX: 00007fb781c83a90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007fb781d74860 R08: 0000000000000001 R09: 215fd20ce0e6152e
R10: 00007ffd60d9e8e0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fb781d78658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25424 pid:9809 tgid:9809 ppid:46 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
</TASK>
task:modprobe state:R running task stack:24000 pid:9818 tgid:9818 ppid:11 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7f9722143a90
RSP: 002b:00007ffe05d6de28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f9722234860 RCX: 00007f9722143a90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007f9722234860 R08: 0000000000000001 R09: 6b4b8080cd93a00c
R10: 00007ffe05d6dce0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f9722238658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25136 pid:9825 tgid:9825 ppid:46 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
</TASK>
task:modprobe state:R running task stack:25424 pid:9835 tgid:9835 ppid:11 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
</TASK>
task:modprobe state:R running task stack:25424 pid:9845 tgid:9845 ppid:1114 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7fdda0a27a90
RSP: 002b:00007ffe05bd09d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fdda0b18860 RCX: 00007fdda0a27a90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007fdda0b18860 R08: 0000000000000001 R09: ff36ed7236d48a13
R10: 00007ffe05bd0890 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fdda0b1c658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:24000 pid:9851 tgid:9851 ppid:11 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7fe833113a90
RSP: 002b:00007fff2a01fc28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fe833204860 RCX: 00007fe833113a90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007fe833204860 R08: 0000000000000001 R09: 35ed84c02d71e9d4
R10: 00007fff2a01fae0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fe833208658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25424 pid:9857 tgid:9857 ppid:1114 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7f3964397a90
RSP: 002b:00007ffd9166d4b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f3964488860 RCX: 00007f3964397a90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007f3964488860 R08: 0000000000000001 R09: 8f528e78319cc9bc
R10: 00007ffd9166d370 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f396448c658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25424 pid:9865 tgid:9865 ppid:11 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
</TASK>
task:modprobe state:R running task stack:25344 pid:9874 tgid:9874 ppid:1114 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7ff415499a90
RSP: 002b:00007ffc31aa1ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007ff41558a860 RCX: 00007ff415499a90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007ff41558a860 R08: 0000000000000001 R09: bec4dee6b5bd8695
R10: 00007ffc31aa1d90 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007ff41558e658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25424 pid:9880 tgid:9880 ppid:46 flags:0x00000000
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25424 pid:9882 tgid:9882 ppid:1148 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7f6775f63a90
RSP: 002b:00007ffc48cbf6e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f6776054860 RCX: 00007f6775f63a90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007f6776054860 R08: 0000000000000001 R09: 2978e367673e3d81
R10: 00007ffc48cbf5a0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f6776058658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25136 pid:9888 tgid:9888 ppid:46 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7fa6ea053a90
RSP: 002b:00007ffca5ca66d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fa6ea144860 RCX: 00007fa6ea053a90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007fa6ea144860 R08: 0000000000000001 R09: e7a3475f3e0f6286
R10: 00007ffca5ca6590 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fa6ea148658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:24000 pid:9895 tgid:9895 ppid:1148 flags:0x00004002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

RIP: 0033:0x7ff086b4da90
RSP: 002b:00007ffc358ac5f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007ff086c3e860 RCX: 00007ff086b4da90

RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001

RBP: 00007ff086c3e860 R08: 0000000000000001 R09: 29caad31773cb941
R10: 00007ffc358ac4b0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007ff086c42658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25424 pid:9901 tgid:9901 ppid:1114 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:24720 pid:9911 tgid:9911 ppid:1148 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
do_task_dead+0xd6/0x110 kernel/sched/core.c:6698

Tested on:

commit: 80bf308c mm/mglru: only clear kswapd_failures if recla..

git tree: git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/ mm-hotfixes-unstable

console output: https://syzkaller.appspot.com/x/log.txt?x=1600445f980000
kernel config: https://syzkaller.appspot.com/x/.config?x=9878fe11046ea2c6

dashboard link: https://syzkaller.appspot.com/bug?extid=ce483fd06e2061f44f5d
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40

Lorenzo Stoakes

unread,

Oct 16, 2024, 3:06:31 AM10/16/24

+ some people from USB/HID subsystem.

This is really not looking mm-related, as for a second time we've asked
syzbot to re-run and for a second time it's not hit any mm-specific code -
I think this is misattributed - could somebody from the USB/HID side take a
look?

It looks to be something that isn't reproduced by a specific C program but
by a syzkaller USB configuration [0]?

Thanks!

[0]: https://syzkaller.appspot.com/x/repro.syz?x=17336fd0580000

Greg Kroah-Hartman

unread,

Oct 16, 2024, 3:14:32 AM10/16/24

to Lorenzo Stoakes, syzbot, ak...@linux-foundation.org, liam.h...@oracle.com, linux...@vger.kernel.org, linux-...@vger.kernel.org, linu...@kvack.org, linu...@vger.kernel.org, syzkall...@googlegroups.com, vba...@suse.cz, Marcello Sylvester Bauer, Jiri Kosina, Benjamin Tissoires

On Wed, Oct 16, 2024 at 08:06:20AM +0100, Lorenzo Stoakes wrote:
> + some people from USB/HID subsystem.
>
> This is really not looking mm-related, as for a second time we've asked
> syzbot to re-run and for a second time it's not hit any mm-specific code -
> I think this is misattributed - could somebody from the USB/HID side take a
> look?
>
> It looks to be something that isn't reproduced by a specific C program but
> by a syzkaller USB configuration [0]?

There's a lot of odd usb syzbot issues right now dealing with the dummy
hcd controller, so maybe this is another one of them...

thanks,

greg k-h

Tetsuo Handa

unread,

Oct 16, 2024, 4:31:55 AM10/16/24

to Greg Kroah-Hartman, Lorenzo Stoakes, syzbot, ak...@linux-foundation.org, liam.h...@oracle.com, linux...@vger.kernel.org, linux-...@vger.kernel.org, linu...@kvack.org, linu...@vger.kernel.org, syzkall...@googlegroups.com, vba...@suse.cz, Marcello Sylvester Bauer, Jiri Kosina, Benjamin Tissoires

This is a printk() flooding stall triggered by SysRq-t.

sched_show_task+0x3f0/0x5f0 kernel/sched/core.c:7557
show_state_filter+0xee/0x320 kernel/sched/core.c:7627

syzbot

unread,

Aug 4, 2025, 9:54:22 PMAug 4

to syzkall...@googlegroups.com

Auto-closing this bug as obsolete.
No recent activity, existing reproducers are no longer triggering the issue.

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