INFO: task syz-executor.4:26924 blocked for more than 143 seconds.
Not tainted 5.15.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:26384 pid:26924 ppid: 8975 flags:0x00024004
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6250
schedule+0xd2/0x260 kernel/sched/core.c:6323
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x174/0x270 kernel/sched/completion.c:138
io_wq_exit_workers fs/io-wq.c:1204 [inline]
io_wq_put_and_exit+0x33a/0xb70 fs/io-wq.c:1239
io_uring_clean_tctx fs/io_uring.c:9774 [inline]
io_uring_cancel_generic+0x61d/0x690 fs/io_uring.c:9855
io_uring_files_cancel include/linux/io_uring.h:16 [inline]
do_exit+0x60c/0x2b40 kernel/exit.c:787
do_group_exit+0x125/0x310 kernel/exit.c:929
get_signal+0x47d/0x21d0 kernel/signal.c:2820
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f6c9dc98ae9
RSP: 002b:00007f6c9b20e188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: 00000000000002ff RBX: 00007f6c9ddabf60 RCX: 00007f6c9dc98ae9
RDX: 000000000000440a RSI: 00000000000002ff RDI: 0000000000000004
RBP: 00007f6c9dcf2f45 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffd31955df R14: 00007f6c9b20e300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8b983a20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6461
1 lock held by in:imklog/6165:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7 Comm: kworker/0:1 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:__rq_lockp kernel/sched/sched.h:1187 [inline]
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1306 [inline]
RIP: 0010:rq_clock_task kernel/sched/sched.h:1469 [inline]
RIP: 0010:update_curr+0xc6/0x900 kernel/sched/fair.c:847
Code: 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 6a 05 00 00 41 8b 8c 24 58 0d 00 00 <4c> 89 e7 85 c9 0f 85 2a 02 00 00 48 83 c7 18 be ff ff ff ff e8 11
RSP: 0018:ffffc90000007bb0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff888011883a80 RCX: 0000000000000000
RDX: 1ffff110173874fb RSI: 0000000000000001 RDI: ffff8880b9c3a7d8
RBP: ffff8880b9c39b40 R08: 0000000000000009 R09: ffffffff8d6fc457
R10: fffffbfff1adf88a R11: 0000000000000000 R12: ffff8880b9c39a80
R13: 0000000000000000 R14: ffff888011885780 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc7eefce000 CR3: 000000000b68e000 CR4: 0000000000350ef0
Call Trace:
enqueue_entity+0x299/0x1730 kernel/sched/fair.c:4238
enqueue_task_fair+0x208/0x1bc0 kernel/sched/fair.c:5588
enqueue_task kernel/sched/core.c:1999 [inline]
activate_task kernel/sched/core.c:2024 [inline]
ttwu_do_activate+0x1d9/0x7b0 kernel/sched/core.c:3600
ttwu_queue kernel/sched/core.c:3793 [inline]
try_to_wake_up+0x508/0x15a0 kernel/sched/core.c:4116
autoremove_wake_function+0x12/0x140 kernel/sched/wait.c:409
__wake_up_common+0x147/0x650 kernel/sched/wait.c:108
__wake_up_common_lock+0xd0/0x130 kernel/sched/wait.c:138
irq_work_single+0x120/0x270 kernel/irq_work.c:211
irq_work_run_list+0x91/0xc0 kernel/irq_work.c:242
irq_work_run+0x54/0xd0 kernel/irq_work.c:251
__sysvec_irq_work+0x95/0x3d0 arch/x86/kernel/irq_work.c:22
sysvec_irq_work+0x8e/0xc0 arch/x86/kernel/irq_work.c:17
asm_sysvec_irq_work+0x12/0x20 arch/x86/include/asm/idtentry.h:664
RIP: 0010:default_send_IPI_self+0x5d/0xe0 arch/x86/kernel/apic/ipi.c:243
Code: 1a f3 90 0f b6 45 00 84 c0 74 04 3c 03 7e 76 8b 04 25 00 c3 5f ff f6 c4 10 75 e6 81 cb 00 00 04 00 89 df 89 3c 25 00 c3 5f ff <5b> 5d c3 48 c7 c0 60 0a 35 8b 48 ba 00 00 00 00 00 fc ff df 48 c1
RSP: 0018:ffffc90000cc7860 EFLAGS: 00000206
RAX: 00000000000008fb RBX: 00000000000400f6 RCX: ffffffff812a4d73
RDX: 1ffffffff166a15b RSI: 0000000000000008 RDI: 00000000000400f6
RBP: fffffbffffebf860 R08: 0000000000000000 R09: ffffffff8d6fbc47
R10: fffffbfff1adf788 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000a20 R14: 00000000ffffffff R15: 00000000000000e8
arch_irq_work_raise+0x92/0x110 arch/x86/kernel/irq_work.c:31
__irq_work_queue_local+0x15a/0x1b0 kernel/irq_work.c:102
irq_work_queue kernel/irq_work.c:114 [inline]
irq_work_queue+0x47/0x80 kernel/irq_work.c:106
__kfence_alloc+0x164/0x13a0 mm/kfence/core.c:884
kfence_alloc include/linux/kfence.h:126 [inline]
slab_alloc_node mm/slub.c:3152 [inline]
kmem_cache_alloc_node+0x3cc/0x3f0 mm/slub.c:3270
__alloc_skb+0x215/0x340 net/core/skbuff.c:414
alloc_skb include/linux/skbuff.h:1120 [inline]
nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:745 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:802 [inline]
nsim_dev_trap_report_work+0x29a/0xbc0 drivers/net/netdevsim/dev.c:843
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
7: fc ff df
a: 48 89 fa mov %rdi,%rdx
d: 48 c1 ea 03 shr $0x3,%rdx
11: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax
15: 84 c0 test %al,%al
17: 74 08 je 0x21
19: 3c 03 cmp $0x3,%al
1b: 0f 8e 6a 05 00 00 jle 0x58b
21: 41 8b 8c 24 58 0d 00 mov 0xd58(%r12),%ecx
28: 00
* 29: 4c 89 e7 mov %r12,%rdi <-- trapping instruction
2c: 85 c9 test %ecx,%ecx
2e: 0f 85 2a 02 00 00 jne 0x25e
34: 48 83 c7 18 add $0x18,%rdi
38: be ff ff ff ff mov $0xffffffff,%esi
3d: e8 .byte 0xe8
3e: 11 .byte 0x11