INFO: task syz-executor.3:26883 blocked for more than 143 seconds.
Not tainted 5.16.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:28504 pid:26883 ppid: 6779 flags:0x00024004
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_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:1217 [inline]
io_wq_put_and_exit+0x33a/0xb70 fs/io-wq.c:1252
io_uring_clean_tctx fs/io_uring.c:9770 [inline]
io_uring_cancel_generic+0x61d/0x690 fs/io_uring.c:9851
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/0x2220 kernel/signal.c:2830
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: 0033:0x7f962bf10ae9
RSP: 002b:00007f9629465188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: 0000000000000139 RBX: 00007f962c024020 RCX: 00007f962bf10ae9
RDX: 000000000000013f RSI: 000000000000450e RDI: 0000000000000004
RBP: 00007f962bf6af6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f962c557b2f R14: 00007f9629465300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb83b60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by in:imklog/6226:
#0: ffff88807bed0370 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc1-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: 2960 Comm: systemd-journal Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__unwind_start+0x5ac/0x800 arch/x86/kernel/unwind_orc.c:666
Code: 00 00 49 3b 5f 38 77 89 e9 37 fd ff ff 48 8d 0d 00 00 00 00 48 89 e2 48 89 e8 49 89 4f 48 4d 8d 77 38 49 89 57 38 49 89 47 40 b0 fe ff ff 4c 89 ff e8 f7 43 8a 00 e9 01 fd ff ff e8 ad 43 8a
RSP: 0018:ffffc90001aaf650 EFLAGS: 00000246
RAX: ffff88807b509d00 RBX: ffffc90001aaf728 RCX: ffffffff81340d06
RDX: ffffc90001aaf650 RSI: 0000000000000000 RDI: ffffc90001aaf700
RBP: ffff88807b509d00 R08: 0000000000000001 R09: ffffc90001aaf6a0
R10: fffff52000355edf R11: 0000000000000000 R12: 0000000000000000
R13: ffffc90001aaf6c8 R14: ffffc90001aaf6d8 R15: ffffc90001aaf6a0
FS: 00007fd7ad3c18c0(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd7aaa10000 CR3: 000000001b92c000 CR4: 00000000003526f0
Call Trace:
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0x5c/0xe0 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
save_stack+0x151/0x1e0 mm/page_owner.c:119
__set_page_owner+0x45/0x2d0 mm/page_owner.c:181
prep_new_page mm/page_alloc.c:2418 [inline]
get_page_from_freelist+0xa72/0x2f50 mm/page_alloc.c:4149
__alloc_pages+0x1b2/0x500 mm/page_alloc.c:5369
alloc_pages+0x1a7/0x300 mm/mempolicy.c:2191
alloc_slab_page mm/slub.c:1793 [inline]
allocate_slab mm/slub.c:1930 [inline]
new_slab+0x32d/0x4a0 mm/slub.c:1993
___slab_alloc+0x918/0xfe0 mm/slub.c:3022
__slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3109
slab_alloc_node mm/slub.c:3200 [inline]
slab_alloc mm/slub.c:3242 [inline]
kmem_cache_alloc+0x35c/0x3a0 mm/slub.c:3247
getname_flags.part.0+0x50/0x4f0 fs/namei.c:138
getname_flags+0x9a/0xe0 include/linux/audit.h:323
user_path_at_empty+0x2b/0x60 fs/namei.c:2800
user_path_at include/linux/namei.h:57 [inline]
do_faccessat+0x127/0x850 fs/open.c:421
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: 0033:0x7fd7ac67c9c7
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:00007fff38725878 EFLAGS: 00000246 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffda RBX: 00007fff38728790 RCX: 00007fd7ac67c9c7
RDX: 00007fd7ad0eda00 RSI: 0000000000000000 RDI: 000055fb305d09a3
RBP: 00007fff387258b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fff38728790 R15: 00007fff38725da0
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 49 3b 5f 38 cmp 0x38(%r15),%rbx
6: 77 89 ja 0xffffff91
8: e9 37 fd ff ff jmpq 0xfffffd44
d: 48 8d 0d 00 00 00 00 lea 0x0(%rip),%rcx # 0x14
14: 48 89 e2 mov %rsp,%rdx
17: 48 89 e8 mov %rbp,%rax
1a: 49 89 4f 48 mov %rcx,0x48(%r15)
1e: 4d 8d 77 38 lea 0x38(%r15),%r14
22: 49 89 57 38 mov %rdx,0x38(%r15)
26: 49 89 47 40 mov %rax,0x40(%r15)
* 2a: e9 b0 fe ff ff jmpq 0xfffffedf <-- trapping instruction
2f: 4c 89 ff mov %r15,%rdi
32: e8 f7 43 8a 00 callq 0x8a442e
37: e9 01 fd ff ff jmpq 0xfffffd3d
3c: e8 .byte 0xe8
3d: ad lods %ds:(%rsi),%eax
3e: 43 rex.XB
3f: 8a .byte 0x8a