INFO: task syz-executor.3:12361 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.3 state:D stack:27880 pid:12361 ppid: 6515 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+0x263/0x2a20 kernel/exit.c:781
do_group_exit+0x125/0x310 kernel/exit.c:923
get_signal+0x47d/0x21d0 kernel/signal.c:2855
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: 0033:0x7f27a42b8ae7
RSP: 002b:00007f27a182e218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 00000000000000ca RBX: 00007f27a43cbf68 RCX: 00007f27a42b8ae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f27a43cbf68
RBP: 00007f27a43cbf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f27a43cbf6c
R13: 00007ffdb2e52f0f R14: 00007f27a182e300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8b982da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6446
2 locks held by kworker/u4:5/1041:
#0: ffff8880b9d39a98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478
#1: ffff8880b9d279c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x173/0x490 kernel/sched/psi.c:871
1 lock held by in:imklog/6178:
2 locks held by agetty/18631:
#0: ffff888019959098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc90001adc2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
=============================================
NMI backtrace for cpu 0
CPU: 0 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2932 Comm: systemd-journal Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:variable_test_bit arch/x86/include/asm/bitops.h:214 [inline]
RIP: 0010:test_bit include/asm-generic/bitops/instrumented-non-atomic.h:135 [inline]
RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:344 [inline]
RIP: 0010:cpu_online include/linux/cpumask.h:895 [inline]
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:13 [inline]
RIP: 0010:lock_acquire+0xbd/0x510 kernel/locking/lockdep.c:5596
Code: 87 dc 03 00 00 89 d2 be 08 00 00 00 48 89 d0 48 89 54 24 08 48 c1 f8 06 48 8d 3c c5 d0 53 6f 8d e8 b8 40 61 00 48 8b 54 24 08 <48> 0f a3 15 db b0 12 0c 0f 82 64 03 00 00 48 c7 c0 ec 87 6f 8d 48
RSP: 0018:ffffc900028e7b50 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 1ffff9200051cf6c RCX: ffffffff815ca2e8
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff8d6f53d0
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8d6f53d7
R10: fffffbfff1adea7a R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff90525318 R15: 0000000000000000
FS: 00007fddfc6838c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efd4c011a20 CR3: 000000001cfed000 CR4: 0000000000350ee0
Call Trace:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
__debug_check_no_obj_freed lib/debugobjects.c:980 [inline]
debug_check_no_obj_freed+0xc7/0x420 lib/debugobjects.c:1023
free_pages_prepare mm/page_alloc.c:1345 [inline]
free_pcp_prepare+0x2ae/0x810 mm/page_alloc.c:1391
free_unref_page_prepare mm/page_alloc.c:3317 [inline]
free_unref_page+0x19/0x690 mm/page_alloc.c:3396
qlink_free mm/kasan/quarantine.c:146 [inline]
qlist_free_all+0x5a/0xc0 mm/kasan/quarantine.c:165
kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:272
__kasan_slab_alloc+0x95/0xb0 mm/kasan/common.c:444
kasan_slab_alloc include/linux/kasan.h:259 [inline]
slab_post_alloc_hook mm/slab.h:519 [inline]
slab_alloc_node mm/slub.c:3213 [inline]
slab_alloc mm/slub.c:3221 [inline]
kmem_cache_alloc+0x209/0x390 mm/slub.c:3226
prepare_creds+0x3f/0x7b0 kernel/cred.c:260
access_override_creds fs/open.c:351 [inline]
do_faccessat+0x3f4/0x850 fs/open.c:415
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fddfb93e9c7
Code: 83 c4 08 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d c8 d4 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 15 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a1 d4 2b 00 f7 d8 64 89 01 48
RSP: 002b:00007ffce180aa78 EFLAGS: 00000246 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffda RBX: 00007ffce180daa0 RCX: 00007fddfb93e9c7
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000056113b2fb9a3
RBP: 00007ffce180abc0 R08: 000056113b2f13e5 R09: 0000000000000018
R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 000056113b7628a0 R15: 00007ffce180b0b0
----------------
Code disassembly (best guess):
0: 87 dc xchg %ebx,%esp
2: 03 00 add (%rax),%eax
4: 00 89 d2 be 08 00 add %cl,0x8bed2(%rcx)
a: 00 00 add %al,(%rax)
c: 48 89 d0 mov %rdx,%rax
f: 48 89 54 24 08 mov %rdx,0x8(%rsp)
14: 48 c1 f8 06 sar $0x6,%rax
18: 48 8d 3c c5 d0 53 6f lea -0x7290ac30(,%rax,8),%rdi
1f: 8d
20: e8 b8 40 61 00 callq 0x6140dd
25: 48 8b 54 24 08 mov 0x8(%rsp),%rdx
* 2a: 48 0f a3 15 db b0 12 bt %rdx,0xc12b0db(%rip) # 0xc12b10d <-- trapping instruction
31: 0c
32: 0f 82 64 03 00 00 jb 0x39c
38: 48 c7 c0 ec 87 6f 8d mov $0xffffffff8d6f87ec,%rax
3f: 48 rex.W