INFO: task syz-executor.5:24815 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.5 state:D stack:28744 pid:24815 ppid: 7385 flags:0x00004004
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_preempt_disabled+0xf/0x20 kernel/sched/core.c:6382
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
io_ring_ctx_wait_and_kill+0x72/0x322 fs/io_uring.c:9527
io_uring_release+0x42/0x46 fs/io_uring.c:9556
__fput+0x286/0x9f0 fs/file_table.c:280
task_work_run+0xdd/0x1a0 kernel/task_work.c:164
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
exit_to_user_mode_prepare+0x27e/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: 0033:0x7ff94cf7cb32
RSP: 002b:00007ff94a4d10f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: 0000000020ffe000 RBX: 0000000000008011 RCX: 00007ff94cf7cb32
RDX: 0000000000000003 RSI: 0000000000200000 RDI: 0000000020ffe000
RBP: 0000000020ffe000 R08: 0000000000000003 R09: 0000000010000000
R10: 0000000000008011 R11: 0000000000000206 R12: 0000000020000140
R13: 0000000020ffe000 R14: 0000000020000100 R15: 0000000020002000
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/6181:
3 locks held by systemd-udevd/29286:
1 lock held by systemd-udevd/29340:
4 locks held by kworker/u4:5/7536:
1 lock held by syz-executor.5/24784:
1 lock held by syz-executor.5/24815:
#0: ffff88806d8a90a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_ring_ctx_wait_and_kill+0x72/0x322 fs/io_uring.c:9527
=============================================
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: 7536 Comm: kworker/u4:5 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:cpumask_any_but+0x76/0x1a0 lib/cpumask.c:58
Code: 07 48 c1 e8 03 41 83 c6 03 48 01 d0 48 89 04 24 eb 57 f3 48 0f bc db e8 e8 20 84 fd 89 dd e8 e1 20 84 fd 48 8b 04 24 0f b6 00 <41> 38 c6 7c 08 84 c0 0f 85 fb 00 00 00 44 8b 3d ba 20 7c 09 89 ee
RSP: 0018:ffffc900165bf980 EFLAGS: 00000093
RAX: 0000000000000000 RBX: 0000000000000008 RCX: 0000000000000000
RDX: ffff88801de7d700 RSI: ffffffff83f3a54f RDI: 0000000000000003
RBP: 0000000000000008 R08: 0000000000000000 R09: 000000000017fbd3
R10: ffffffff83f3a618 R11: 000000000000003f R12: 0000000000000000
R13: ffff888010e68668 R14: 0000000000000007 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff7e75250cf CR3: 000000000b68e000 CR4: 00000000003526f0
Call Trace:
flush_tlb_mm_range+0xb5/0x230 arch/x86/mm/tlb.c:1012
__text_poke+0x593/0x8c0 arch/x86/kernel/alternative.c:1048
text_poke_bp_batch+0x3d7/0x560 arch/x86/kernel/alternative.c:1361
text_poke_flush arch/x86/kernel/alternative.c:1451 [inline]
text_poke_flush arch/x86/kernel/alternative.c:1448 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1458
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
jump_label_update+0x1d5/0x430 kernel/jump_label.c:830
static_key_enable_cpuslocked+0x1b1/0x260 kernel/jump_label.c:177
static_key_enable+0x16/0x20 kernel/jump_label.c:190
toggle_allocation_gate mm/kfence/core.c:732 [inline]
toggle_allocation_gate+0x100/0x390 mm/kfence/core.c:724
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 c1 e8 03 shr $0x3,%rax
4: 41 83 c6 03 add $0x3,%r14d
8: 48 01 d0 add %rdx,%rax
b: 48 89 04 24 mov %rax,(%rsp)
f: eb 57 jmp 0x68
11: f3 48 0f bc db tzcnt %rbx,%rbx
16: e8 e8 20 84 fd callq 0xfd842103
1b: 89 dd mov %ebx,%ebp
1d: e8 e1 20 84 fd callq 0xfd842103
22: 48 8b 04 24 mov (%rsp),%rax
26: 0f b6 00 movzbl (%rax),%eax
* 29: 41 38 c6 cmp %al,%r14b <-- trapping instruction
2c: 7c 08 jl 0x36
2e: 84 c0 test %al,%al
30: 0f 85 fb 00 00 00 jne 0x131
36: 44 8b 3d ba 20 7c 09 mov 0x97c20ba(%rip),%r15d # 0x97c20f7
3d: 89 ee mov %ebp,%esi