[v6.1] INFO: rcu detected stall in sys_exit_group (3)
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syzbot
Jan 23, 2024, 6:05:24 AMJan 23
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 8fd7f4462453 Linux 6.1.74
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=17d19c6fe80000
kernel config: https://syzkaller.appspot.com/x/.config?x=641b679746d8a982
dashboard link: https://syzkaller.appspot.com/bug?extid=6f38629d8f83a72bd6f7
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/b6812fcc348f/disk-8fd7f446.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/0cf26d0b8083/vmlinux-8fd7f446.xz
kernel image: https://storage.googleapis.com/syzbot-assets/2d7f8217691a/bzImage-8fd7f446.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6f3862...@syzkaller.appspotmail.com
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (1 ticks this GP) idle=0024/1/0x4000000000000000 softirq=68433/68433 fqs=0
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P56/1:b..l P24371/1:b..l
(detected by 1, t=10502 jiffies, g=96473, q=30 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 24432 Comm: syz-executor.5 Not tainted 6.1.74-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:debug_object_activate+0x2e8/0x890 lib/debugobjects.c:712
Code: 00 48 39 c8 0f 87 3b 04 00 00 4c 8b 74 24 20 eb 05 4c 8b 7c 24 38 48 81 fb 00 f0 ff ff 0f 87 85 00 00 00 4c 8d 6b 10 4d 89 ee <49> c1 ee 03 43 0f b6 04 26 84 c0 0f 85 87 04 00 00 41 8b 45 00 8d
RSP: 0018:ffffc90000007c00 EFLAGS: 00000087
RAX: ffff888079dde340 RBX: ffff88807c2a15e8 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90000007ae0
RBP: ffffc90000007d18 R08: dffffc0000000000 R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88807c2a15f8 R14: ffff88807c2a15f8 R15: 1ffff92000000f88
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3c6cfa8000 CR3: 0000000076c1d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<IRQ>
debug_hrtimer_activate kernel/time/hrtimer.c:420 [inline]
debug_activate kernel/time/hrtimer.c:475 [inline]
enqueue_hrtimer+0x30/0x390 kernel/time/hrtimer.c:1084
__run_hrtimer kernel/time/hrtimer.c:1702 [inline]
__hrtimer_run_queues+0x728/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:__folio_memcg+0x1f/0x160 include/linux/memcontrol.h:382
Code: 66 2e 0f 1f 84 00 00 00 00 00 90 41 57 41 56 41 54 53 49 89 ff 49 bc 00 00 00 00 00 fc ff df 48 83 c7 38 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 a5 0b f9 ff 4d 8b 77 38 49 8d 5f 08 48 89
RSP: 0018:ffffc90004e67658 EFLAGS: 00000a02
RAX: 1ffffd40004c0b07 RBX: ffffea0002605808 RCX: ffff88801e615940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0002605838
RBP: ffffea0002605801 R08: ffffffff81d30cb0 R09: fffff940004c0b07
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffea0002605800 R15: ffffea0002605800
folio_memcg_unlock mm/memcontrol.c:2161 [inline]
unlock_page_memcg+0x3d/0xb0 mm/memcontrol.c:2166
page_remove_rmap+0x819/0xed0 mm/rmap.c:1462
zap_pte_range mm/memory.c:1453 [inline]
zap_pmd_range mm/memory.c:1574 [inline]
zap_pud_range mm/memory.c:1603 [inline]
zap_p4d_range mm/memory.c:1624 [inline]
unmap_page_range+0x1217/0x2740 mm/memory.c:1645
unmap_vmas+0x48b/0x640 mm/memory.c:1730
exit_mmap+0x252/0x9f0 mm/mmap.c:3227
__mmput+0x115/0x3c0 kernel/fork.c:1199
exit_mm+0x226/0x300 kernel/exit.c:563
do_exit+0x9f6/0x26a0 kernel/exit.c:856
do_group_exit+0x202/0x2b0 kernel/exit.c:1019
__do_sys_exit_group kernel/exit.c:1030 [inline]
__se_sys_exit_group kernel/exit.c:1028 [inline]
__x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1028
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f3c6ce7cda9
Code: Unable to access opcode bytes at 0x7f3c6ce7cd7f.
RSP: 002b:00007ffe516fa748 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007f3c6ce7cda9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: 00000000000004ee R09: 0000000000000000
R10: 0000001b2cc20000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
</TASK>
task:syz-executor.1 state:R running task stack:23176 pid:24371 ppid:3591 flags:0x00004002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5245 [inline]
__schedule+0x142d/0x4550 kernel/sched/core.c:6558
preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6870
irqentry_exit+0x53/0x80 kernel/entry/common.c:433
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:lock_acquire+0x26f/0x5a0 kernel/locking/lockdep.c:5666
Code: 2b 00 74 08 4c 89 f7 e8 cf 7e 77 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc900033cef00 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000679dec RCX: 1ffff92000679d8c
RDX: dffffc0000000000 RSI: ffffffff8aebf7c0 RDI: ffffffff8b3cfa80
RBP: ffffc900033cf060 R08: dffffc0000000000 R09: fffffbfff2092245
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000679de8
R13: dffffc0000000000 R14: ffffc900033cef60 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:306 [inline]
rcu_read_lock include/linux/rcupdate.h:747 [inline]
page_ext_get+0x39/0x2a0 mm/page_ext.c:157
__set_page_owner+0x32/0x390 mm/page_owner.c:192
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2513
prep_new_page mm/page_alloc.c:2520 [inline]
get_page_from_freelist+0x31a1/0x3320 mm/page_alloc.c:4279
__alloc_pages+0x28d/0x770 mm/page_alloc.c:5545
__folio_alloc+0xf/0x30 mm/page_alloc.c:5577
vma_alloc_folio+0x486/0x990 mm/mempolicy.c:2243
shmem_alloc_folio mm/shmem.c:1589 [inline]
shmem_alloc_and_acct_folio+0x5a8/0xd50 mm/shmem.c:1613
shmem_get_folio_gfp+0x13f0/0x3470 mm/shmem.c:1941
shmem_get_folio mm/shmem.c:2072 [inline]
shmem_write_begin+0x16e/0x4e0 mm/shmem.c:2559
generic_perform_write+0x2fc/0x5e0 mm/filemap.c:3817
__generic_file_write_iter+0x176/0x400 mm/filemap.c:3945
generic_file_write_iter+0xab/0x310 mm/filemap.c:3977
call_write_iter include/linux/fs.h:2249 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x7ae/0xba0 fs/read_write.c:584
ksys_write+0x19c/0x2c0 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f71a647baef
RSP: 002b:00007f71a71efe80 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000001000000 RCX: 00007f71a647baef
RDX: 0000000001000000 RSI: 00007f719cbff000 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000000050e7
R10: 0000000000000002 R11: 0000000000000293 R12: 0000000000000003
R13: 00007f71a71eff80 R14: 00007f71a71eff40 R15: 00007f719cbff000
</TASK>
task:kworker/u4:4 state:R running task stack:20472 pid:56 ppid:2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5245 [inline]
__schedule+0x142d/0x4550 kernel/sched/core.c:6558
preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6870
irqentry_exit+0x53/0x80 kernel/entry/common.c:433
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:lock_acquire+0x26f/0x5a0 kernel/locking/lockdep.c:5666
Code: 2b 00 74 08 4c 89 f7 e8 cf 7e 77 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc90001577900 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920002aef2c RCX: 1ffff920002aeecc
RDX: dffffc0000000000 RSI: ffffffff8aebf7c0 RDI: ffffffff8b3cfa80
RBP: ffffc90001577a48 R08: dffffc0000000000 R09: fffffbfff2092245
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920002aef28
R13: dffffc0000000000 R14: ffffc90001577960 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:306 [inline]
rcu_read_lock include/linux/rcupdate.h:747 [inline]
inet_twsk_purge+0x164/0xb60 net/ipv4/inet_timewait_sock.c:295
ops_exit_list net/core/net_namespace.c:174 [inline]
cleanup_net+0x763/0xb60 net/core/net_namespace.c:601
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
</TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g96473 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=93032
rcu: rcu_preempt kthread starved for 10502 jiffies! g96473 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:26680 pid:16 ppid:2 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5245 [inline]
__schedule+0x142d/0x4550 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1935
rcu_gp_fqs_loop+0x2d2/0x1120 kernel/rcu/tree.c:1674
rcu_gp_kthread+0xa3/0x3a0 kernel/rcu/tree.c:1873
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
</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: 24432 Comm: syz-executor.5 Not tainted 6.1.74-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:instrument_atomic_read include/linux/instrumented.h:72 [inline]
RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
RIP: 0010:hlock_class kernel/locking/lockdep.c:228 [inline]
RIP: 0010:__lock_acquire+0x11c6/0x1f80 kernel/locking/lockdep.c:5046
Code: 00 41 0f b6 04 3f 84 c0 0f 85 09 0a 00 00 48 8b 44 24 08 8b 18 81 e3 ff 1f 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 20 12 49 90 <be> 08 00 00 00 e8 00 6a 77 00 48 0f a3 1d 78 b5 de 0e 73 1b 48 8d
RSP: 0018:ffffc90000007a00 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff816a5a47
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90491220
RBP: f273e68c3196d937 R08: dffffc0000000000 R09: fffffbfff2092246
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88801e616418
R13: ffff88801e615940 R14: 0000000000000000 R15: 1ffff11003cc2c9c
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3c6cfa8000 CR3: 0000000076c1d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<IRQ>
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
debug_object_deactivate+0x61/0x420 lib/debugobjects.c:772
debug_hrtimer_deactivate kernel/time/hrtimer.c:425 [inline]
debug_deactivate+0x1d/0x280 kernel/time/hrtimer.c:481
__run_hrtimer kernel/time/hrtimer.c:1653 [inline]
__hrtimer_run_queues+0x334/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:__folio_memcg+0x1f/0x160 include/linux/memcontrol.h:382
Code: 66 2e 0f 1f 84 00 00 00 00 00 90 41 57 41 56 41 54 53 49 89 ff 49 bc 00 00 00 00 00 fc ff df 48 83 c7 38 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 a5 0b f9 ff 4d 8b 77 38 49 8d 5f 08 48 89
RSP: 0018:ffffc90004e67658 EFLAGS: 00000a02
RAX: 1ffffd40004c0b07 RBX: ffffea0002605808 RCX: ffff88801e615940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0002605838
RBP: ffffea0002605801 R08: ffffffff81d30cb0 R09: fffff940004c0b07
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffea0002605800 R15: ffffea0002605800
folio_memcg_unlock mm/memcontrol.c:2161 [inline]
unlock_page_memcg+0x3d/0xb0 mm/memcontrol.c:2166
page_remove_rmap+0x819/0xed0 mm/rmap.c:1462
zap_pte_range mm/memory.c:1453 [inline]
zap_pmd_range mm/memory.c:1574 [inline]
zap_pud_range mm/memory.c:1603 [inline]
zap_p4d_range mm/memory.c:1624 [inline]
unmap_page_range+0x1217/0x2740 mm/memory.c:1645
unmap_vmas+0x48b/0x640 mm/memory.c:1730
exit_mmap+0x252/0x9f0 mm/mmap.c:3227
__mmput+0x115/0x3c0 kernel/fork.c:1199
exit_mm+0x226/0x300 kernel/exit.c:563
do_exit+0x9f6/0x26a0 kernel/exit.c:856
do_group_exit+0x202/0x2b0 kernel/exit.c:1019
__do_sys_exit_group kernel/exit.c:1030 [inline]
__se_sys_exit_group kernel/exit.c:1028 [inline]
__x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1028
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f3c6ce7cda9
Code: Unable to access opcode bytes at 0x7f3c6ce7cd7f.
RSP: 002b:00007ffe516fa748 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007f3c6ce7cda9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: 00000000000004ee R09: 0000000000000000
R10: 0000001b2cc20000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
</TASK>
---
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If the report is already addressed, let syzbot know by replying with:
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If you want to overwrite report's subsystems, reply with:
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If the report is a duplicate of another one, reply with:
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If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: 8fd7f4462453 Linux 6.1.74
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=17d19c6fe80000
kernel config: https://syzkaller.appspot.com/x/.config?x=641b679746d8a982
dashboard link: https://syzkaller.appspot.com/bug?extid=6f38629d8f83a72bd6f7
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/b6812fcc348f/disk-8fd7f446.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/0cf26d0b8083/vmlinux-8fd7f446.xz
kernel image: https://storage.googleapis.com/syzbot-assets/2d7f8217691a/bzImage-8fd7f446.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6f3862...@syzkaller.appspotmail.com
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (1 ticks this GP) idle=0024/1/0x4000000000000000 softirq=68433/68433 fqs=0
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P56/1:b..l P24371/1:b..l
(detected by 1, t=10502 jiffies, g=96473, q=30 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 24432 Comm: syz-executor.5 Not tainted 6.1.74-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:debug_object_activate+0x2e8/0x890 lib/debugobjects.c:712
Code: 00 48 39 c8 0f 87 3b 04 00 00 4c 8b 74 24 20 eb 05 4c 8b 7c 24 38 48 81 fb 00 f0 ff ff 0f 87 85 00 00 00 4c 8d 6b 10 4d 89 ee <49> c1 ee 03 43 0f b6 04 26 84 c0 0f 85 87 04 00 00 41 8b 45 00 8d
RSP: 0018:ffffc90000007c00 EFLAGS: 00000087
RAX: ffff888079dde340 RBX: ffff88807c2a15e8 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90000007ae0
RBP: ffffc90000007d18 R08: dffffc0000000000 R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88807c2a15f8 R14: ffff88807c2a15f8 R15: 1ffff92000000f88
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3c6cfa8000 CR3: 0000000076c1d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<IRQ>
debug_hrtimer_activate kernel/time/hrtimer.c:420 [inline]
debug_activate kernel/time/hrtimer.c:475 [inline]
enqueue_hrtimer+0x30/0x390 kernel/time/hrtimer.c:1084
__run_hrtimer kernel/time/hrtimer.c:1702 [inline]
__hrtimer_run_queues+0x728/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:__folio_memcg+0x1f/0x160 include/linux/memcontrol.h:382
Code: 66 2e 0f 1f 84 00 00 00 00 00 90 41 57 41 56 41 54 53 49 89 ff 49 bc 00 00 00 00 00 fc ff df 48 83 c7 38 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 a5 0b f9 ff 4d 8b 77 38 49 8d 5f 08 48 89
RSP: 0018:ffffc90004e67658 EFLAGS: 00000a02
RAX: 1ffffd40004c0b07 RBX: ffffea0002605808 RCX: ffff88801e615940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0002605838
RBP: ffffea0002605801 R08: ffffffff81d30cb0 R09: fffff940004c0b07
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffea0002605800 R15: ffffea0002605800
folio_memcg_unlock mm/memcontrol.c:2161 [inline]
unlock_page_memcg+0x3d/0xb0 mm/memcontrol.c:2166
page_remove_rmap+0x819/0xed0 mm/rmap.c:1462
zap_pte_range mm/memory.c:1453 [inline]
zap_pmd_range mm/memory.c:1574 [inline]
zap_pud_range mm/memory.c:1603 [inline]
zap_p4d_range mm/memory.c:1624 [inline]
unmap_page_range+0x1217/0x2740 mm/memory.c:1645
unmap_vmas+0x48b/0x640 mm/memory.c:1730
exit_mmap+0x252/0x9f0 mm/mmap.c:3227
__mmput+0x115/0x3c0 kernel/fork.c:1199
exit_mm+0x226/0x300 kernel/exit.c:563
do_exit+0x9f6/0x26a0 kernel/exit.c:856
do_group_exit+0x202/0x2b0 kernel/exit.c:1019
__do_sys_exit_group kernel/exit.c:1030 [inline]
__se_sys_exit_group kernel/exit.c:1028 [inline]
__x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1028
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f3c6ce7cda9
Code: Unable to access opcode bytes at 0x7f3c6ce7cd7f.
RSP: 002b:00007ffe516fa748 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007f3c6ce7cda9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: 00000000000004ee R09: 0000000000000000
R10: 0000001b2cc20000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
</TASK>
task:syz-executor.1 state:R running task stack:23176 pid:24371 ppid:3591 flags:0x00004002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5245 [inline]
__schedule+0x142d/0x4550 kernel/sched/core.c:6558
preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6870
irqentry_exit+0x53/0x80 kernel/entry/common.c:433
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:lock_acquire+0x26f/0x5a0 kernel/locking/lockdep.c:5666
Code: 2b 00 74 08 4c 89 f7 e8 cf 7e 77 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc900033cef00 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000679dec RCX: 1ffff92000679d8c
RDX: dffffc0000000000 RSI: ffffffff8aebf7c0 RDI: ffffffff8b3cfa80
RBP: ffffc900033cf060 R08: dffffc0000000000 R09: fffffbfff2092245
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000679de8
R13: dffffc0000000000 R14: ffffc900033cef60 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:306 [inline]
rcu_read_lock include/linux/rcupdate.h:747 [inline]
page_ext_get+0x39/0x2a0 mm/page_ext.c:157
__set_page_owner+0x32/0x390 mm/page_owner.c:192
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2513
prep_new_page mm/page_alloc.c:2520 [inline]
get_page_from_freelist+0x31a1/0x3320 mm/page_alloc.c:4279
__alloc_pages+0x28d/0x770 mm/page_alloc.c:5545
__folio_alloc+0xf/0x30 mm/page_alloc.c:5577
vma_alloc_folio+0x486/0x990 mm/mempolicy.c:2243
shmem_alloc_folio mm/shmem.c:1589 [inline]
shmem_alloc_and_acct_folio+0x5a8/0xd50 mm/shmem.c:1613
shmem_get_folio_gfp+0x13f0/0x3470 mm/shmem.c:1941
shmem_get_folio mm/shmem.c:2072 [inline]
shmem_write_begin+0x16e/0x4e0 mm/shmem.c:2559
generic_perform_write+0x2fc/0x5e0 mm/filemap.c:3817
__generic_file_write_iter+0x176/0x400 mm/filemap.c:3945
generic_file_write_iter+0xab/0x310 mm/filemap.c:3977
call_write_iter include/linux/fs.h:2249 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x7ae/0xba0 fs/read_write.c:584
ksys_write+0x19c/0x2c0 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f71a647baef
RSP: 002b:00007f71a71efe80 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000001000000 RCX: 00007f71a647baef
RDX: 0000000001000000 RSI: 00007f719cbff000 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000000050e7
R10: 0000000000000002 R11: 0000000000000293 R12: 0000000000000003
R13: 00007f71a71eff80 R14: 00007f71a71eff40 R15: 00007f719cbff000
</TASK>
task:kworker/u4:4 state:R running task stack:20472 pid:56 ppid:2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5245 [inline]
__schedule+0x142d/0x4550 kernel/sched/core.c:6558
preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6870
irqentry_exit+0x53/0x80 kernel/entry/common.c:433
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:lock_acquire+0x26f/0x5a0 kernel/locking/lockdep.c:5666
Code: 2b 00 74 08 4c 89 f7 e8 cf 7e 77 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc90001577900 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920002aef2c RCX: 1ffff920002aeecc
RDX: dffffc0000000000 RSI: ffffffff8aebf7c0 RDI: ffffffff8b3cfa80
RBP: ffffc90001577a48 R08: dffffc0000000000 R09: fffffbfff2092245
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920002aef28
R13: dffffc0000000000 R14: ffffc90001577960 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:306 [inline]
rcu_read_lock include/linux/rcupdate.h:747 [inline]
inet_twsk_purge+0x164/0xb60 net/ipv4/inet_timewait_sock.c:295
ops_exit_list net/core/net_namespace.c:174 [inline]
cleanup_net+0x763/0xb60 net/core/net_namespace.c:601
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
</TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g96473 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=93032
rcu: rcu_preempt kthread starved for 10502 jiffies! g96473 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:26680 pid:16 ppid:2 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5245 [inline]
__schedule+0x142d/0x4550 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1935
rcu_gp_fqs_loop+0x2d2/0x1120 kernel/rcu/tree.c:1674
rcu_gp_kthread+0xa3/0x3a0 kernel/rcu/tree.c:1873
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
</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: 24432 Comm: syz-executor.5 Not tainted 6.1.74-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:instrument_atomic_read include/linux/instrumented.h:72 [inline]
RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
RIP: 0010:hlock_class kernel/locking/lockdep.c:228 [inline]
RIP: 0010:__lock_acquire+0x11c6/0x1f80 kernel/locking/lockdep.c:5046
Code: 00 41 0f b6 04 3f 84 c0 0f 85 09 0a 00 00 48 8b 44 24 08 8b 18 81 e3 ff 1f 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 20 12 49 90 <be> 08 00 00 00 e8 00 6a 77 00 48 0f a3 1d 78 b5 de 0e 73 1b 48 8d
RSP: 0018:ffffc90000007a00 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff816a5a47
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90491220
RBP: f273e68c3196d937 R08: dffffc0000000000 R09: fffffbfff2092246
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88801e616418
R13: ffff88801e615940 R14: 0000000000000000 R15: 1ffff11003cc2c9c
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3c6cfa8000 CR3: 0000000076c1d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<IRQ>
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
debug_object_deactivate+0x61/0x420 lib/debugobjects.c:772
debug_hrtimer_deactivate kernel/time/hrtimer.c:425 [inline]
debug_deactivate+0x1d/0x280 kernel/time/hrtimer.c:481
__run_hrtimer kernel/time/hrtimer.c:1653 [inline]
__hrtimer_run_queues+0x334/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:__folio_memcg+0x1f/0x160 include/linux/memcontrol.h:382
Code: 66 2e 0f 1f 84 00 00 00 00 00 90 41 57 41 56 41 54 53 49 89 ff 49 bc 00 00 00 00 00 fc ff df 48 83 c7 38 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 a5 0b f9 ff 4d 8b 77 38 49 8d 5f 08 48 89
RSP: 0018:ffffc90004e67658 EFLAGS: 00000a02
RAX: 1ffffd40004c0b07 RBX: ffffea0002605808 RCX: ffff88801e615940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0002605838
RBP: ffffea0002605801 R08: ffffffff81d30cb0 R09: fffff940004c0b07
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffea0002605800 R15: ffffea0002605800
folio_memcg_unlock mm/memcontrol.c:2161 [inline]
unlock_page_memcg+0x3d/0xb0 mm/memcontrol.c:2166
page_remove_rmap+0x819/0xed0 mm/rmap.c:1462
zap_pte_range mm/memory.c:1453 [inline]
zap_pmd_range mm/memory.c:1574 [inline]
zap_pud_range mm/memory.c:1603 [inline]
zap_p4d_range mm/memory.c:1624 [inline]
unmap_page_range+0x1217/0x2740 mm/memory.c:1645
unmap_vmas+0x48b/0x640 mm/memory.c:1730
exit_mmap+0x252/0x9f0 mm/mmap.c:3227
__mmput+0x115/0x3c0 kernel/fork.c:1199
exit_mm+0x226/0x300 kernel/exit.c:563
do_exit+0x9f6/0x26a0 kernel/exit.c:856
do_group_exit+0x202/0x2b0 kernel/exit.c:1019
__do_sys_exit_group kernel/exit.c:1030 [inline]
__se_sys_exit_group kernel/exit.c:1028 [inline]
__x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1028
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f3c6ce7cda9
Code: Unable to access opcode bytes at 0x7f3c6ce7cd7f.
RSP: 002b:00007ffe516fa748 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007f3c6ce7cda9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: 00000000000004ee R09: 0000000000000000
R10: 0000001b2cc20000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
</TASK>
---
This report is generated by a bot. It may contain errors.
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If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to overwrite report's subsystems, reply with:
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If you want to undo deduplication, reply with:
#syz undup
syzbot
Feb 22, 2024, 11:58:24 PMFeb 22
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: 8b4118fabd6e Linux 6.1.78
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=109a5d2c180000
kernel config: https://syzkaller.appspot.com/x/.config?x=93bcaf862378a9b8
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1398d43c180000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f5708019df51/disk-8b4118fa.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/646777c7d071/vmlinux-8b4118fa.xz
kernel image: https://storage.googleapis.com/syzbot-assets/603070686d6f/bzImage-8b4118fa.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6f3862...@syzkaller.appspotmail.com
rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-...D } 2683 jiffies s: 625 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:__lock_acquire+0x6fb/0x1f80 kernel/locking/lockdep.c:4999
Code: b7 02 85 c0 48 8b 5c 24 10 75 1f 48 8b 44 24 58 0f b6 04 10 84 c0 0f 85 9f 14 00 00 83 3b 00 41 0f 94 c7 45 00 ff 41 80 c7 02 <48> 8b 44 24 28 0f b6 04 10 84 c0 0f 85 d5 12 00 00 48 8b 44 24 18
RSP: 0018:ffffc90000007a80 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffff88807c6fc644 RCX: 0000000000000002
RDX: dffffc0000000000 RSI: ffff88807c6fc660 RDI: ffffffff90491228
RBP: 0000000000000002 R08: dffffc0000000000 R09: fffffbfff2092246
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000003
R13: ffff88807c6fbb80 R14: ffff88807c6fc6f8 R15: 1ffff1100f8df802
_raw_spin_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:170
__run_hrtimer kernel/time/hrtimer.c:1690 [inline]
__hrtimer_run_queues+0x6d3/0xe50 kernel/time/hrtimer.c:1750
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812
Code: e8 25 00 00 00 0f 0b 0f 1f 00 53 48 89 fb e8 17 00 00 00 48 8b 3d 88 c8 e8 0c 48 89 de 5b e9 57 96 56 00 cc cc cc cc cc cc cc <48> 8b 04 24 65 48 8b 0d 94 f1 77 7e 65 8b 15 95 f1 77 7e f7 c2 00
RSP: 0018:ffffc90003bcf6b0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffea0001c1fb88 RCX: ffff88807c6fbb80
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffea0001c1fbc8
R13: ffff888017023b38 R14: 0000000000000001 R15: ffffea0001c1fbc0
arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
page_fixed_fake_head include/linux/page-flags.h:216 [inline]
_compound_head include/linux/page-flags.h:257 [inline]
PageAnon include/linux/page-flags.h:669 [inline]
page_table_check_clear+0x1a7/0x720 mm/page_table_check.c:74
zap_pte_range mm/memory.c:1435 [inline]
Code: Unable to access opcode bytes at 0x7f9a94beef3f.
RSP: 002b:00007ffd8d8c3ae8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9a94beef69
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 00007f9a94c6f390 R08: ffffffffffffffb8 R09: 0000000100000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9a94c6f390
R13: 0000000000000000 R14: 00007f9a94c71ec0 R15: 00007f9a94bbf440
</TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.287 msecs
---
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.
HEAD commit: 8b4118fabd6e Linux 6.1.78
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=109a5d2c180000
kernel config: https://syzkaller.appspot.com/x/.config?x=93bcaf862378a9b8
dashboard link: https://syzkaller.appspot.com/bug?extid=6f38629d8f83a72bd6f7
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1529b3f0180000
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1398d43c180000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f5708019df51/disk-8b4118fa.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/646777c7d071/vmlinux-8b4118fa.xz
kernel image: https://storage.googleapis.com/syzbot-assets/603070686d6f/bzImage-8b4118fa.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6f3862...@syzkaller.appspotmail.com
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3571 Comm: syz-executor315 Not tainted 6.1.78-syzkaller #0
NMI backtrace for cpu 0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:__lock_acquire+0x6fb/0x1f80 kernel/locking/lockdep.c:4999
Code: b7 02 85 c0 48 8b 5c 24 10 75 1f 48 8b 44 24 58 0f b6 04 10 84 c0 0f 85 9f 14 00 00 83 3b 00 41 0f 94 c7 45 00 ff 41 80 c7 02 <48> 8b 44 24 28 0f b6 04 10 84 c0 0f 85 d5 12 00 00 48 8b 44 24 18
RSP: 0018:ffffc90000007a80 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffff88807c6fc644 RCX: 0000000000000002
RDX: dffffc0000000000 RSI: ffff88807c6fc660 RDI: ffffffff90491228
RBP: 0000000000000002 R08: dffffc0000000000 R09: fffffbfff2092246
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000003
R13: ffff88807c6fbb80 R14: ffff88807c6fc6f8 R15: 1ffff1100f8df802
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9a94c722d0 CR3: 000000001ab7f000 CR4: 00000000003506f0
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<IRQ>
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<IRQ>
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
_raw_spin_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:170
__run_hrtimer kernel/time/hrtimer.c:1690 [inline]
__hrtimer_run_queues+0x6d3/0xe50 kernel/time/hrtimer.c:1750
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:203
__sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
Code: e8 25 00 00 00 0f 0b 0f 1f 00 53 48 89 fb e8 17 00 00 00 48 8b 3d 88 c8 e8 0c 48 89 de 5b e9 57 96 56 00 cc cc cc cc cc cc cc <48> 8b 04 24 65 48 8b 0d 94 f1 77 7e 65 8b 15 95 f1 77 7e f7 c2 00
RSP: 0018:ffffc90003bcf6b0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffea0001c1fb88 RCX: ffff88807c6fbb80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81ec8cf0 R09: fffff94000383f79
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffea0001c1fbc8
R13: ffff888017023b38 R14: 0000000000000001 R15: ffffea0001c1fbc0
arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
page_fixed_fake_head include/linux/page-flags.h:216 [inline]
_compound_head include/linux/page-flags.h:257 [inline]
PageAnon include/linux/page-flags.h:669 [inline]
page_table_check_clear+0x1a7/0x720 mm/page_table_check.c:74
zap_pte_range mm/memory.c:1435 [inline]
zap_pmd_range mm/memory.c:1574 [inline]
zap_pud_range mm/memory.c:1603 [inline]
zap_p4d_range mm/memory.c:1624 [inline]
unmap_page_range+0x1b4a/0x2740 mm/memory.c:1645
zap_pud_range mm/memory.c:1603 [inline]
zap_p4d_range mm/memory.c:1624 [inline]
unmap_vmas+0x48b/0x640 mm/memory.c:1730
exit_mmap+0x252/0x9f0 mm/mmap.c:3227
__mmput+0x115/0x3c0 kernel/fork.c:1199
exit_mm+0x226/0x300 kernel/exit.c:563
do_exit+0x9f6/0x26a0 kernel/exit.c:856
do_group_exit+0x202/0x2b0 kernel/exit.c:1019
__do_sys_exit_group kernel/exit.c:1030 [inline]
__se_sys_exit_group kernel/exit.c:1028 [inline]
__x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1028
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f9a94beef69
exit_mmap+0x252/0x9f0 mm/mmap.c:3227
__mmput+0x115/0x3c0 kernel/fork.c:1199
exit_mm+0x226/0x300 kernel/exit.c:563
do_exit+0x9f6/0x26a0 kernel/exit.c:856
do_group_exit+0x202/0x2b0 kernel/exit.c:1019
__do_sys_exit_group kernel/exit.c:1030 [inline]
__se_sys_exit_group kernel/exit.c:1028 [inline]
__x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1028
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Code: Unable to access opcode bytes at 0x7f9a94beef3f.
RSP: 002b:00007ffd8d8c3ae8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9a94beef69
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 00007f9a94c6f390 R08: ffffffffffffffb8 R09: 0000000100000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9a94c6f390
R13: 0000000000000000 R14: 00007f9a94c71ec0 R15: 00007f9a94bbf440
</TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.287 msecs
---
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#syz test: git://repo/address.git branch-or-commit-hash
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