INFO: task syz-executor.4:31314 blocked for more than 143 seconds.
Not tainted 5.16.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:26696 pid:31314 ppid: 14887 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__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:9565
io_uring_release+0x42/0x46 fs/io_uring.c:9594
__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: 0033:0x7f80d9e46b32
RSP: 002b:00007f80d73bc0f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: 0000000020ee7000 RBX: 0000000000008011 RCX: 00007f80d9e46b32
RDX: 0000000000000003 RSI: 0000000000020000 RDI: 0000000020ee7000
RBP: 0000000020ee7000 R08: 0000000000000006 R09: 0000000010000000
R10: 0000000000008011 R11: 0000000000000206 R12: 0000000020000040
R13: 0000000020ee7000 R14: 00000000200014c0 R15: 0000000020ffc000
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8bb83b60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
3 locks held by kworker/u4:4/980:
1 lock held by in:imklog/6220:
#0: ffff8880713ff9f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
1 lock held by syz-executor.4/31314:
#0: ffff88801cc770a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_ring_ctx_wait_and_kill+0x72/0x322 fs/io_uring.c:9565
1 lock held by syz-executor.4/31321:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.16.0-rc3-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:111
nmi_trigger_cpumask_backtrace+0x1b3/0x230 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: 31321 Comm: syz-executor.4 Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:rb_next+0xa/0x140 lib/rbtree.c:496
Code: 44 24 08 4c 89 04 24 e8 34 e5 be fd 48 8b 44 24 08 4c 8b 04 24 e9 b9 fb ff ff 66 0f 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df <48> 89 fa 41 55 48 c1 ea 03 41 54 55 48 89 fd 53 48 83 ec 08 80 3c
RSP: 0018:ffffc90000007dd0 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: ffffc90001abfb88 RCX: 0000000000000000
RDX: ffff888037608000 RSI: ffffffff840006c8 RDI: ffffc90001abfb88
RBP: ffff8880b9c2a4d0 R08: ffff8880b9c2ade0 R09: 0000000000000001
R10: ffffffff8400063c R11: 0000000000000000 R12: ffff8880b9c2a4d8
R13: 0000000000000000 R14: ffff8880b9c2a400 R15: 0000000000000000
FS: 00007f80d739b700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056374a2edad8 CR3: 000000007c962000 CR4: 00000000003506f0
DR0: 0000000020000280 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
rb_erase_cached include/linux/rbtree.h:124 [inline]
timerqueue_del+0xd0/0x140 lib/timerqueue.c:57
__remove_hrtimer+0xa1/0x2a0 kernel/time/hrtimer.c:1116
__run_hrtimer kernel/time/hrtimer.c:1665 [inline]
__hrtimer_run_queues+0x4ea/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:jhash2 include/linux/jhash.h:129 [inline]
RIP: 0010:hash_stack lib/stackdepot.c:180 [inline]
RIP: 0010:__stack_depot_save+0xc6/0x4f0 lib/stackdepot.c:329
Code: 89 d8 01 c3 41 c1 c0 04 45 31 c8 44 29 c0 41 89 c1 44 89 c0 41 01 d8 c1 c0 06 44 31 c8 29 c3 41 89 d9 89 c3 44 01 c0 c1 c3 08 <44> 31 cb 41 89 d9 41 29 d8 01 c3 41 c1 c1 10 45 31 c8 45 89 c1 44
RSP: 0018:ffffc90003c7f9a0 EFLAGS: 00000292
RAX: 00000000c6e26257 RBX: 00000000ed84ec42 RCX: 0000000000000001
RDX: ffffc90003c7fa40 RSI: 0000000000400cc0 RDI: 0000000000000008
RBP: 0000000000400cc0 R08: 0000000083f4dd6b R09: 000000002095e9fa
R10: 0000000000000001 R11: 0000000000000000 R12: ffffc90003c7fa10
R13: 000000000000000a R14: 000000000000000a R15: ffff88818cb40d40
kasan_save_stack+0x38/0x50 mm/kasan/common.c:40
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc mm/kasan/common.c:513 [inline]
____kasan_kmalloc mm/kasan/common.c:472 [inline]
__kasan_kmalloc+0xa9/0xd0 mm/kasan/common.c:522
kmalloc include/linux/slab.h:590 [inline]
io_add_buffers fs/io_uring.c:4445 [inline]
io_provide_buffers fs/io_uring.c:4479 [inline]
io_issue_sqe+0x2887/0x7060 fs/io_uring.c:6748
__io_queue_sqe fs/io_uring.c:7018 [inline]
io_req_task_submit+0xce/0x450 fs/io_uring.c:2321
tctx_task_work+0x1b3/0x630 fs/io_uring.c:2245
task_work_run+0xdd/0x1a0 kernel/task_work.c:164
tracehook_notify_signal include/linux/tracehook.h:214 [inline]
handle_signal_work kernel/entry/common.c:146 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x256/0x290 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: 0033:0x7f80d9e46ae9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f80d739b188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: 0000000000000800 RBX: 00007f80d9f5a020 RCX: 00007f80d9e46ae9
RDX: 0000000000000000 RSI: 000000000000450e RDI: 0000000000000006
RBP: 00007f80d9ea0f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f80da48db2f R14: 00007f80d739b300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 44 24 08 rex.R and $0x8,%al
3: 4c 89 04 24 mov %r8,(%rsp)
7: e8 34 e5 be fd callq 0xfdbee540
c: 48 8b 44 24 08 mov 0x8(%rsp),%rax
11: 4c 8b 04 24 mov (%rsp),%r8
15: e9 b9 fb ff ff jmpq 0xfffffbd3
1a: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
27: fc ff df
* 2a: 48 89 fa mov %rdi,%rdx <-- trapping instruction
2d: 41 55 push %r13
2f: 48 c1 ea 03 shr $0x3,%rdx
33: 41 54 push %r12
35: 55 push %rbp
36: 48 89 fd mov %rdi,%rbp
39: 53 push %rbx
3a: 48 83 ec 08 sub $0x8,%rsp
3e: 80 .byte 0x80
3f: 3c .byte 0x3c