[v5.15] INFO: rcu detected stall in net_rx_action
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syzbot
Sep 19, 2023, 3:24:12 PM9/19/23
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 35ecaa3632bf Linux 5.15.132
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=14bd85ba680000
kernel config: https://syzkaller.appspot.com/x/.config?x=7e1620fbf0341078
dashboard link: https://syzkaller.appspot.com/bug?extid=6e98e32876d56dff6b2b
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/5544d1729cb8/disk-35ecaa36.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/4e61190c49c1/vmlinux-35ecaa36.xz
kernel image: https://storage.googleapis.com/syzbot-assets/e483f6e81777/bzImage-35ecaa36.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6e98e3...@syzkaller.appspotmail.com
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (0 ticks this GP) idle=e73/1/0x4000000000000000 softirq=41217/41217 fqs=0
(detected by 1, t=10502 jiffies, g=60813, q=609)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3544 Comm: syz-executor.0 Not tainted 5.15.132-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:35 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:106 [inline]
RIP: 0010:lock_acquire+0x177/0x4f0 kernel/locking/lockdep.c:5618
Code: 4c 89 fb 48 c1 eb 03 42 80 3c 2b 00 74 08 4c 89 ff e8 1d 45 67 00 48 c7 84 24 80 00 00 00 00 00 00 00 9c 8f 84 24 80 00 00 00 <42> 80 3c 2b 00 74 08 4c 89 ff e8 7a 44 67 00 48 8d 5c 24 60 4c 8b
RSP: 0018:ffffc90000006c20 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 1ffff92000000d94 RCX: ffffffff81627cec
RDX: 0000000000000000 RSI: ffffffff8ad87960 RDI: ffffffff8ad87920
RBP: ffffc90000006d80 R08: dffffc0000000000 R09: fffffbfff1bc81fe
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000000d8c
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc90000006ca0
FS: 0000555556d29480(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f69ac8f6020 CR3: 000000003fef3000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<IRQ>
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:269
rcu_read_lock include/linux/rcupdate.h:696 [inline]
advance_sched+0x6ce/0x940 net/sched/sch_taprio.c:769
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
__sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:unwind_next_frame+0x46/0x1fa0
Code: ff df 48 8d 5f 48 48 89 d9 48 c1 e9 03 48 89 4c 24 28 80 3c 01 00 74 12 48 89 df e8 04 5a 91 00 48 b8 00 00 00 00 00 fc ff df <48> 89 5c 24 08 4d 8b 77 48 49 8d 6f 38 48 89 e9 48 c1 e9 03 48 89
RSP: 0018:ffffc900000071a8 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffc900000072a8 RCX: 1ffff92000000e55
RDX: dffffc0000000000 RSI: ffffffff8a6003b3 RDI: ffffc90000007260
RBP: ffffc900000072f0 R08: 0000000000000009 R09: ffffc90000007350
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807f3b3b80
R13: ffffffff816dc560 R14: ffffc90000007340 R15: ffffc90000007260
arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513
kasan_kmalloc include/linux/kasan.h:264 [inline]
__kmalloc_node_track_caller+0x195/0x390 mm/slub.c:4963
kmalloc_reserve net/core/skbuff.c:356 [inline]
__alloc_skb+0x12c/0x590 net/core/skbuff.c:427
__napi_alloc_skb+0x15c/0x2d0 net/core/skbuff.c:568
napi_alloc_skb include/linux/skbuff.h:3046 [inline]
page_to_skb+0x294/0xd20 drivers/net/virtio_net.c:454
receive_mergeable drivers/net/virtio_net.c:1070 [inline]
receive_buf+0x1218/0x64c0 drivers/net/virtio_net.c:1180
virtnet_receive drivers/net/virtio_net.c:1472 [inline]
virtnet_poll+0x629/0x1270 drivers/net/virtio_net.c:1585
__napi_poll+0xc7/0x440 net/core/dev.c:7012
napi_poll net/core/dev.c:7079 [inline]
net_rx_action+0x617/0xda0 net/core/dev.c:7166
__do_softirq+0x3b3/0x93a kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x155/0x240 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
common_interrupt+0xa4/0xc0 arch/x86/kernel/irq.c:240
</IRQ>
<TASK>
asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:629
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:196
Code: 00 00 00 0f 1f 00 53 48 89 fb e8 17 00 00 00 48 8b 3d c8 f4 63 0c 48 89 de 5b e9 a7 cd 48 00 cc cc cc cc cc cc cc 48 8b 04 24 <65> 48 8b 0d 54 52 82 7e 65 8b 15 55 52 82 7e f7 c2 00 01 ff 00 74
RSP: 0018:ffffc90002daf510 EFLAGS: 00000283
RAX: ffffffff81b977c5 RBX: ffff88807e997a90 RCX: ffff88807f3b3b80
RDX: 0000000000000000 RSI: 0000000000000014 RDI: ffff888078c0cd00
RBP: ffffc90002daf5f0 R08: ffffffff81b59156 R09: ffffed100f1819b8
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000014
R13: dffffc0000000000 R14: 1ffff920005b5ea8 R15: ffff888078c0cd00
rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:268
rcu_read_lock include/linux/rcupdate.h:696 [inline]
count_memcg_event_mm+0x8d/0x3e0 include/linux/memcontrol.h:1078
handle_mm_fault+0x161/0x5950 mm/memory.c:4834
do_user_addr_fault arch/x86/mm/fault.c:1397 [inline]
handle_page_fault arch/x86/mm/fault.c:1485 [inline]
exc_page_fault+0x271/0x740 arch/x86/mm/fault.c:1541
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:568
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x40 arch/x86/lib/copy_user_64.S:206
Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 0f 1f 80 00 00 00 00 0f 01 cb 83 fa 40 0f 82 70 ff ff ff 89 d1 <f3> a4 31 c0 0f 01 ca c3 66 2e 0f 1f 84 00 00 00 00 00 89 d1 83 f8
RSP: 0018:ffffc90002daf9d0 EFLAGS: 00050246
RAX: ffffffff84051101 RBX: 00007f69ac8f6060 RCX: 0000000000000040
RDX: 0000000000000040 RSI: ffff88801a30a000 RDI: 00007f69ac8f6020
RBP: ffffc90002dafd20 R08: dffffc0000000000 R09: ffffed1003461408
R10: 0000000000000000 R11: dffffc0000000001 R12: 00007f69ac8f6020
R13: 0000000000000040 R14: ffff88801a30a000 R15: 00007ffffffff000
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_to_user arch/x86/include/asm/uaccess_64.h:58 [inline]
copyout lib/iov_iter.c:157 [inline]
copy_page_to_iter_iovec lib/iov_iter.c:228 [inline]
__copy_page_to_iter lib/iov_iter.c:861 [inline]
copy_page_to_iter+0x49a/0x10d0 lib/iov_iter.c:889
pipe_read+0x57c/0x12b0 fs/pipe.c:306
call_read_iter include/linux/fs.h:2097 [inline]
new_sync_read fs/read_write.c:404 [inline]
vfs_read+0xa9f/0xe10 fs/read_write.c:485
ksys_read+0x1a2/0x2c0 fs/read_write.c:623
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f69ac7d978c
Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 59 81 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 af 81 02 00 48
RSP: 002b:00007fffa8cfd8f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f69ac7d978c
RDX: 0000000000000040 RSI: 00007f69ac8f6020 RDI: 00000000000000f9
RBP: 00007fffa8cfd97c R08: 0000000000000000 R09: 0079746972756365
R10: 00007fffa8cfd2b0 R11: 0000000000000246 R12: 0000000000000032
R13: 00000000000de50c R14: 00000000000de33d R15: 0000000000000001
</TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g60813 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=31419
rcu: rcu_preempt kthread starved for 10502 jiffies! g60813 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:I stack:27000 pid: 15 ppid: 2 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1884
rcu_gp_fqs_loop+0x2af/0xf70 kernel/rcu/tree.c:1959
rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2132
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
</TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3544 Comm: syz-executor.0 Not tainted 5.15.132-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
RIP: 0010:task_irq_context kernel/locking/lockdep.c:4520 [inline]
RIP: 0010:__lock_acquire+0x3d6/0x1ff0 kernel/locking/lockdep.c:4949
Code: 80 00 00 00 48 89 03 65 8b 05 2a f0 9f 7e 31 db 85 c0 0f 95 c3 01 db 48 8d bd d4 0a 00 00 48 89 f8 48 c1 e8 03 48 89 44 24 68 <0f> b6 04 10 84 c0 4c 8b 74 24 38 48 89 f9 48 89 7c 24 10 0f 85 5c
RSP: 0018:ffffc90000006b40 EFLAGS: 00000807
RAX: 1ffff1100fe768ca RBX: 0000000000000002 RCX: ffff88807f3b4670
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff88807f3b4654
RBP: ffff88807f3b3b80 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: dffffc0000000001 R12: 000000000000102f
R13: 000000000000000a R14: 000000000000000a R15: 0000000000000000
FS: 0000555556d29480(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f69ac8f6020 CR3: 000000003fef3000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<IRQ>
lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5622
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:363 [inline]
advance_sched+0x47/0x940 net/sched/sch_taprio.c:716
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
__sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:unwind_next_frame+0x46/0x1fa0
Code: ff df 48 8d 5f 48 48 89 d9 48 c1 e9 03 48 89 4c 24 28 80 3c 01 00 74 12 48 89 df e8 04 5a 91 00 48 b8 00 00 00 00 00 fc ff df <48> 89 5c 24 08 4d 8b 77 48 49 8d 6f 38 48 89 e9 48 c1 e9 03 48 89
RSP: 0018:ffffc900000071a8 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffc900000072a8 RCX: 1ffff92000000e55
RDX: dffffc0000000000 RSI: ffffffff8a6003b3 RDI: ffffc90000007260
RBP: ffffc900000072f0 R08: 0000000000000009 R09: ffffc90000007350
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807f3b3b80
R13: ffffffff816dc560 R14: ffffc90000007340 R15: ffffc90000007260
arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513
kasan_kmalloc include/linux/kasan.h:264 [inline]
__kmalloc_node_track_caller+0x195/0x390 mm/slub.c:4963
kmalloc_reserve net/core/skbuff.c:356 [inline]
__alloc_skb+0x12c/0x590 net/core/skbuff.c:427
__napi_alloc_skb+0x15c/0x2d0 net/core/skbuff.c:568
napi_alloc_skb include/linux/skbuff.h:3046 [inline]
page_to_skb+0x294/0xd20 drivers/net/virtio_net.c:454
receive_mergeable drivers/net/virtio_net.c:1070 [inline]
receive_buf+0x1218/0x64c0 drivers/net/virtio_net.c:1180
virtnet_receive drivers/net/virtio_net.c:1472 [inline]
virtnet_poll+0x629/0x1270 drivers/net/virtio_net.c:1585
__napi_poll+0xc7/0x440 net/core/dev.c:7012
napi_poll net/core/dev.c:7079 [inline]
net_rx_action+0x617/0xda0 net/core/dev.c:7166
__do_softirq+0x3b3/0x93a kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x155/0x240 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
common_interrupt+0xa4/0xc0 arch/x86/kernel/irq.c:240
</IRQ>
<TASK>
asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:629
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:196
Code: 00 00 00 0f 1f 00 53 48 89 fb e8 17 00 00 00 48 8b 3d c8 f4 63 0c 48 89 de 5b e9 a7 cd 48 00 cc cc cc cc cc cc cc 48 8b 04 24 <65> 48 8b 0d 54 52 82 7e 65 8b 15 55 52 82 7e f7 c2 00 01 ff 00 74
RSP: 0018:ffffc90002daf510 EFLAGS: 00000283
RAX: ffffffff81b977c5 RBX: ffff88807e997a90 RCX: ffff88807f3b3b80
RDX: 0000000000000000 RSI: 0000000000000014 RDI: ffff888078c0cd00
RBP: ffffc90002daf5f0 R08: ffffffff81b59156 R09: ffffed100f1819b8
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000014
R13: dffffc0000000000 R14: 1ffff920005b5ea8 R15: ffff888078c0cd00
rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:268
rcu_read_lock include/linux/rcupdate.h:696 [inline]
count_memcg_event_mm+0x8d/0x3e0 include/linux/memcontrol.h:1078
handle_mm_fault+0x161/0x5950 mm/memory.c:4834
do_user_addr_fault arch/x86/mm/fault.c:1397 [inline]
handle_page_fault arch/x86/mm/fault.c:1485 [inline]
exc_page_fault+0x271/0x740 arch/x86/mm/fault.c:1541
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:568
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x40 arch/x86/lib/copy_user_64.S:206
Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 0f 1f 80 00 00 00 00 0f 01 cb 83 fa 40 0f 82 70 ff ff ff 89 d1 <f3> a4 31 c0 0f 01 ca c3 66 2e 0f 1f 84 00 00 00 00 00 89 d1 83 f8
RSP: 0018:ffffc90002daf9d0 EFLAGS: 00050246
RAX: ffffffff84051101 RBX: 00007f69ac8f6060 RCX: 0000000000000040
RDX: 0000000000000040 RSI: ffff88801a30a000 RDI: 00007f69ac8f6020
RBP: ffffc90002dafd20 R08: dffffc0000000000 R09: ffffed1003461408
R10: 0000000000000000 R11: dffffc0000000001 R12: 00007f69ac8f6020
R13: 0000000000000040 R14: ffff88801a30a000 R15: 00007ffffffff000
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_to_user arch/x86/include/asm/uaccess_64.h:58 [inline]
copyout lib/iov_iter.c:157 [inline]
copy_page_to_iter_iovec lib/iov_iter.c:228 [inline]
__copy_page_to_iter lib/iov_iter.c:861 [inline]
copy_page_to_iter+0x49a/0x10d0 lib/iov_iter.c:889
pipe_read+0x57c/0x12b0 fs/pipe.c:306
call_read_iter include/linux/fs.h:2097 [inline]
new_sync_read fs/read_write.c:404 [inline]
vfs_read+0xa9f/0xe10 fs/read_write.c:485
ksys_read+0x1a2/0x2c0 fs/read_write.c:623
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f69ac7d978c
Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 59 81 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 af 81 02 00 48
RSP: 002b:00007fffa8cfd8f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f69ac7d978c
RDX: 0000000000000040 RSI: 00007f69ac8f6020 RDI: 00000000000000f9
RBP: 00007fffa8cfd97c R08: 0000000000000000 R09: 0079746972756365
R10: 00007fffa8cfd2b0 R11: 0000000000000246 R12: 0000000000000032
R13: 00000000000de50c R14: 00000000000de33d R15: 0000000000000001
</TASK>
---
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syzbot found the following issue on:
HEAD commit: 35ecaa3632bf Linux 5.15.132
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=14bd85ba680000
kernel config: https://syzkaller.appspot.com/x/.config?x=7e1620fbf0341078
dashboard link: https://syzkaller.appspot.com/bug?extid=6e98e32876d56dff6b2b
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/5544d1729cb8/disk-35ecaa36.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/4e61190c49c1/vmlinux-35ecaa36.xz
kernel image: https://storage.googleapis.com/syzbot-assets/e483f6e81777/bzImage-35ecaa36.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6e98e3...@syzkaller.appspotmail.com
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (0 ticks this GP) idle=e73/1/0x4000000000000000 softirq=41217/41217 fqs=0
(detected by 1, t=10502 jiffies, g=60813, q=609)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3544 Comm: syz-executor.0 Not tainted 5.15.132-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:35 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:106 [inline]
RIP: 0010:lock_acquire+0x177/0x4f0 kernel/locking/lockdep.c:5618
Code: 4c 89 fb 48 c1 eb 03 42 80 3c 2b 00 74 08 4c 89 ff e8 1d 45 67 00 48 c7 84 24 80 00 00 00 00 00 00 00 9c 8f 84 24 80 00 00 00 <42> 80 3c 2b 00 74 08 4c 89 ff e8 7a 44 67 00 48 8d 5c 24 60 4c 8b
RSP: 0018:ffffc90000006c20 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 1ffff92000000d94 RCX: ffffffff81627cec
RDX: 0000000000000000 RSI: ffffffff8ad87960 RDI: ffffffff8ad87920
RBP: ffffc90000006d80 R08: dffffc0000000000 R09: fffffbfff1bc81fe
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000000d8c
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc90000006ca0
FS: 0000555556d29480(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f69ac8f6020 CR3: 000000003fef3000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<IRQ>
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:269
rcu_read_lock include/linux/rcupdate.h:696 [inline]
advance_sched+0x6ce/0x940 net/sched/sch_taprio.c:769
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
__sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:unwind_next_frame+0x46/0x1fa0
Code: ff df 48 8d 5f 48 48 89 d9 48 c1 e9 03 48 89 4c 24 28 80 3c 01 00 74 12 48 89 df e8 04 5a 91 00 48 b8 00 00 00 00 00 fc ff df <48> 89 5c 24 08 4d 8b 77 48 49 8d 6f 38 48 89 e9 48 c1 e9 03 48 89
RSP: 0018:ffffc900000071a8 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffc900000072a8 RCX: 1ffff92000000e55
RDX: dffffc0000000000 RSI: ffffffff8a6003b3 RDI: ffffc90000007260
RBP: ffffc900000072f0 R08: 0000000000000009 R09: ffffc90000007350
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807f3b3b80
R13: ffffffff816dc560 R14: ffffc90000007340 R15: ffffc90000007260
arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513
kasan_kmalloc include/linux/kasan.h:264 [inline]
__kmalloc_node_track_caller+0x195/0x390 mm/slub.c:4963
kmalloc_reserve net/core/skbuff.c:356 [inline]
__alloc_skb+0x12c/0x590 net/core/skbuff.c:427
__napi_alloc_skb+0x15c/0x2d0 net/core/skbuff.c:568
napi_alloc_skb include/linux/skbuff.h:3046 [inline]
page_to_skb+0x294/0xd20 drivers/net/virtio_net.c:454
receive_mergeable drivers/net/virtio_net.c:1070 [inline]
receive_buf+0x1218/0x64c0 drivers/net/virtio_net.c:1180
virtnet_receive drivers/net/virtio_net.c:1472 [inline]
virtnet_poll+0x629/0x1270 drivers/net/virtio_net.c:1585
__napi_poll+0xc7/0x440 net/core/dev.c:7012
napi_poll net/core/dev.c:7079 [inline]
net_rx_action+0x617/0xda0 net/core/dev.c:7166
__do_softirq+0x3b3/0x93a kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x155/0x240 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
common_interrupt+0xa4/0xc0 arch/x86/kernel/irq.c:240
</IRQ>
<TASK>
asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:629
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:196
Code: 00 00 00 0f 1f 00 53 48 89 fb e8 17 00 00 00 48 8b 3d c8 f4 63 0c 48 89 de 5b e9 a7 cd 48 00 cc cc cc cc cc cc cc 48 8b 04 24 <65> 48 8b 0d 54 52 82 7e 65 8b 15 55 52 82 7e f7 c2 00 01 ff 00 74
RSP: 0018:ffffc90002daf510 EFLAGS: 00000283
RAX: ffffffff81b977c5 RBX: ffff88807e997a90 RCX: ffff88807f3b3b80
RDX: 0000000000000000 RSI: 0000000000000014 RDI: ffff888078c0cd00
RBP: ffffc90002daf5f0 R08: ffffffff81b59156 R09: ffffed100f1819b8
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000014
R13: dffffc0000000000 R14: 1ffff920005b5ea8 R15: ffff888078c0cd00
rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:268
rcu_read_lock include/linux/rcupdate.h:696 [inline]
count_memcg_event_mm+0x8d/0x3e0 include/linux/memcontrol.h:1078
handle_mm_fault+0x161/0x5950 mm/memory.c:4834
do_user_addr_fault arch/x86/mm/fault.c:1397 [inline]
handle_page_fault arch/x86/mm/fault.c:1485 [inline]
exc_page_fault+0x271/0x740 arch/x86/mm/fault.c:1541
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:568
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x40 arch/x86/lib/copy_user_64.S:206
Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 0f 1f 80 00 00 00 00 0f 01 cb 83 fa 40 0f 82 70 ff ff ff 89 d1 <f3> a4 31 c0 0f 01 ca c3 66 2e 0f 1f 84 00 00 00 00 00 89 d1 83 f8
RSP: 0018:ffffc90002daf9d0 EFLAGS: 00050246
RAX: ffffffff84051101 RBX: 00007f69ac8f6060 RCX: 0000000000000040
RDX: 0000000000000040 RSI: ffff88801a30a000 RDI: 00007f69ac8f6020
RBP: ffffc90002dafd20 R08: dffffc0000000000 R09: ffffed1003461408
R10: 0000000000000000 R11: dffffc0000000001 R12: 00007f69ac8f6020
R13: 0000000000000040 R14: ffff88801a30a000 R15: 00007ffffffff000
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_to_user arch/x86/include/asm/uaccess_64.h:58 [inline]
copyout lib/iov_iter.c:157 [inline]
copy_page_to_iter_iovec lib/iov_iter.c:228 [inline]
__copy_page_to_iter lib/iov_iter.c:861 [inline]
copy_page_to_iter+0x49a/0x10d0 lib/iov_iter.c:889
pipe_read+0x57c/0x12b0 fs/pipe.c:306
call_read_iter include/linux/fs.h:2097 [inline]
new_sync_read fs/read_write.c:404 [inline]
vfs_read+0xa9f/0xe10 fs/read_write.c:485
ksys_read+0x1a2/0x2c0 fs/read_write.c:623
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f69ac7d978c
Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 59 81 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 af 81 02 00 48
RSP: 002b:00007fffa8cfd8f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f69ac7d978c
RDX: 0000000000000040 RSI: 00007f69ac8f6020 RDI: 00000000000000f9
RBP: 00007fffa8cfd97c R08: 0000000000000000 R09: 0079746972756365
R10: 00007fffa8cfd2b0 R11: 0000000000000246 R12: 0000000000000032
R13: 00000000000de50c R14: 00000000000de33d R15: 0000000000000001
</TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g60813 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=31419
rcu: rcu_preempt kthread starved for 10502 jiffies! g60813 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:I stack:27000 pid: 15 ppid: 2 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1884
rcu_gp_fqs_loop+0x2af/0xf70 kernel/rcu/tree.c:1959
rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2132
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
</TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3544 Comm: syz-executor.0 Not tainted 5.15.132-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
RIP: 0010:task_irq_context kernel/locking/lockdep.c:4520 [inline]
RIP: 0010:__lock_acquire+0x3d6/0x1ff0 kernel/locking/lockdep.c:4949
Code: 80 00 00 00 48 89 03 65 8b 05 2a f0 9f 7e 31 db 85 c0 0f 95 c3 01 db 48 8d bd d4 0a 00 00 48 89 f8 48 c1 e8 03 48 89 44 24 68 <0f> b6 04 10 84 c0 4c 8b 74 24 38 48 89 f9 48 89 7c 24 10 0f 85 5c
RSP: 0018:ffffc90000006b40 EFLAGS: 00000807
RAX: 1ffff1100fe768ca RBX: 0000000000000002 RCX: ffff88807f3b4670
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff88807f3b4654
RBP: ffff88807f3b3b80 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: dffffc0000000001 R12: 000000000000102f
R13: 000000000000000a R14: 000000000000000a R15: 0000000000000000
FS: 0000555556d29480(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f69ac8f6020 CR3: 000000003fef3000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<IRQ>
lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5622
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:363 [inline]
advance_sched+0x47/0x940 net/sched/sch_taprio.c:716
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
__sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:unwind_next_frame+0x46/0x1fa0
Code: ff df 48 8d 5f 48 48 89 d9 48 c1 e9 03 48 89 4c 24 28 80 3c 01 00 74 12 48 89 df e8 04 5a 91 00 48 b8 00 00 00 00 00 fc ff df <48> 89 5c 24 08 4d 8b 77 48 49 8d 6f 38 48 89 e9 48 c1 e9 03 48 89
RSP: 0018:ffffc900000071a8 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffc900000072a8 RCX: 1ffff92000000e55
RDX: dffffc0000000000 RSI: ffffffff8a6003b3 RDI: ffffc90000007260
RBP: ffffc900000072f0 R08: 0000000000000009 R09: ffffc90000007350
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807f3b3b80
R13: ffffffff816dc560 R14: ffffc90000007340 R15: ffffc90000007260
arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513
kasan_kmalloc include/linux/kasan.h:264 [inline]
__kmalloc_node_track_caller+0x195/0x390 mm/slub.c:4963
kmalloc_reserve net/core/skbuff.c:356 [inline]
__alloc_skb+0x12c/0x590 net/core/skbuff.c:427
__napi_alloc_skb+0x15c/0x2d0 net/core/skbuff.c:568
napi_alloc_skb include/linux/skbuff.h:3046 [inline]
page_to_skb+0x294/0xd20 drivers/net/virtio_net.c:454
receive_mergeable drivers/net/virtio_net.c:1070 [inline]
receive_buf+0x1218/0x64c0 drivers/net/virtio_net.c:1180
virtnet_receive drivers/net/virtio_net.c:1472 [inline]
virtnet_poll+0x629/0x1270 drivers/net/virtio_net.c:1585
__napi_poll+0xc7/0x440 net/core/dev.c:7012
napi_poll net/core/dev.c:7079 [inline]
net_rx_action+0x617/0xda0 net/core/dev.c:7166
__do_softirq+0x3b3/0x93a kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x155/0x240 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
common_interrupt+0xa4/0xc0 arch/x86/kernel/irq.c:240
</IRQ>
<TASK>
asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:629
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:196
Code: 00 00 00 0f 1f 00 53 48 89 fb e8 17 00 00 00 48 8b 3d c8 f4 63 0c 48 89 de 5b e9 a7 cd 48 00 cc cc cc cc cc cc cc 48 8b 04 24 <65> 48 8b 0d 54 52 82 7e 65 8b 15 55 52 82 7e f7 c2 00 01 ff 00 74
RSP: 0018:ffffc90002daf510 EFLAGS: 00000283
RAX: ffffffff81b977c5 RBX: ffff88807e997a90 RCX: ffff88807f3b3b80
RDX: 0000000000000000 RSI: 0000000000000014 RDI: ffff888078c0cd00
RBP: ffffc90002daf5f0 R08: ffffffff81b59156 R09: ffffed100f1819b8
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000014
R13: dffffc0000000000 R14: 1ffff920005b5ea8 R15: ffff888078c0cd00
rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:268
rcu_read_lock include/linux/rcupdate.h:696 [inline]
count_memcg_event_mm+0x8d/0x3e0 include/linux/memcontrol.h:1078
handle_mm_fault+0x161/0x5950 mm/memory.c:4834
do_user_addr_fault arch/x86/mm/fault.c:1397 [inline]
handle_page_fault arch/x86/mm/fault.c:1485 [inline]
exc_page_fault+0x271/0x740 arch/x86/mm/fault.c:1541
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:568
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x40 arch/x86/lib/copy_user_64.S:206
Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 0f 1f 80 00 00 00 00 0f 01 cb 83 fa 40 0f 82 70 ff ff ff 89 d1 <f3> a4 31 c0 0f 01 ca c3 66 2e 0f 1f 84 00 00 00 00 00 89 d1 83 f8
RSP: 0018:ffffc90002daf9d0 EFLAGS: 00050246
RAX: ffffffff84051101 RBX: 00007f69ac8f6060 RCX: 0000000000000040
RDX: 0000000000000040 RSI: ffff88801a30a000 RDI: 00007f69ac8f6020
RBP: ffffc90002dafd20 R08: dffffc0000000000 R09: ffffed1003461408
R10: 0000000000000000 R11: dffffc0000000001 R12: 00007f69ac8f6020
R13: 0000000000000040 R14: ffff88801a30a000 R15: 00007ffffffff000
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_to_user arch/x86/include/asm/uaccess_64.h:58 [inline]
copyout lib/iov_iter.c:157 [inline]
copy_page_to_iter_iovec lib/iov_iter.c:228 [inline]
__copy_page_to_iter lib/iov_iter.c:861 [inline]
copy_page_to_iter+0x49a/0x10d0 lib/iov_iter.c:889
pipe_read+0x57c/0x12b0 fs/pipe.c:306
call_read_iter include/linux/fs.h:2097 [inline]
new_sync_read fs/read_write.c:404 [inline]
vfs_read+0xa9f/0xe10 fs/read_write.c:485
ksys_read+0x1a2/0x2c0 fs/read_write.c:623
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f69ac7d978c
Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 59 81 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 af 81 02 00 48
RSP: 002b:00007fffa8cfd8f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f69ac7d978c
RDX: 0000000000000040 RSI: 00007f69ac8f6020 RDI: 00000000000000f9
RBP: 00007fffa8cfd97c R08: 0000000000000000 R09: 0079746972756365
R10: 00007fffa8cfd2b0 R11: 0000000000000246 R12: 0000000000000032
R13: 00000000000de50c R14: 00000000000de33d R15: 0000000000000001
</TASK>
---
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syzbot
Dec 28, 2023, 2:24:13 PM12/28/23
to syzkaller...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
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