INFO: task syz-executor.2:3038 blocked for more than 143 seconds.
Not tainted 5.16.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:24840 pid: 3038 ppid: 26142 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:2852
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: 0033:0x7fb926cc5ae9
RSP: 002b:00007fb92423b188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: 0000000000000200 RBX: 00007fb926dd8f60 RCX: 00007fb926cc5ae9
RDX: 0000000000000000 RSI: 00000000000045f5 RDI: 0000000000000003
RBP: 00007fb926d1ff6d R08: 0000000000000000 R09: 0000000000001800
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe48b9b40f R14: 00007fb92423b300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb81120 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by in:imklog/6441:
#0: ffff88801fcb93f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
2 locks held by kworker/u4:12/16306:
#0: ffff8880b9d39b18 (&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
2 locks held by kworker/u4:2/19894:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc2-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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2972 Comm: systemd-journal Not tainted 5.16.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:file_mask_to_av security/selinux/hooks.c:1983 [inline]
RIP: 0010:selinux_inode_permission+0x1a2/0x610 security/selinux/hooks.c:3184
Code: e8 43 99 d6 fd 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 01 0f 8e 51 04 00 00 0f b7 45 00 00 40 00 00 41 89 dd 41 83 e5 01 66 25 00 f0 89 c6 89 04 24 e8
RSP: 0018:ffffc90001a87a30 EFLAGS: 00000246
RAX: 00000000000041ed RBX: 0000000000000081 RCX: 0000000000000000
RDX: 1ffff1100fbd81b3 RSI: ffffffff83a0399d RDI: 0000000000000003
RBP: ffff88807dec0d98 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff83a0398f R11: 0000000000000000 R12: 1ffff92000350f47
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88807defd500
FS: 00007f19c2fe28c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f19c089d028 CR3: 000000007650b000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
security_inode_permission+0x92/0xf0 security/security.c:1314
inode_permission.part.0+0x119/0x440 fs/namei.c:532
inode_permission fs/namei.c:505 [inline]
may_lookup fs/namei.c:1683 [inline]
link_path_walk.part.0+0x277/0xd00 fs/namei.c:2239
link_path_walk fs/namei.c:2221 [inline]
path_lookupat+0xc8/0x860 fs/namei.c:2448
filename_lookup+0x1c6/0x590 fs/namei.c:2478
user_path_at_empty+0x42/0x60 fs/namei.c:2801
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: 0033:0x7f19c229d9c7
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:00007ffd31ac9c48 EFLAGS: 00000246 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffda RBX: 00007ffd31accb60 RCX: 00007f19c229d9c7
RDX: 00007f19c2d0ea00 RSI: 0000000000000000 RDI: 000055be1ce689a3
RBP: 00007ffd31ac9c80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ffd31accb60 R15: 00007ffd31aca170
----------------
Code disassembly (best guess):
0: e8 43 99 d6 fd callq 0xfdd69948
5: 48 89 ea mov %rbp,%rdx
8: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
f: fc ff df
12: 48 c1 ea 03 shr $0x3,%rdx
16: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax
1a: 84 c0 test %al,%al
1c: 74 08 je 0x26
1e: 3c 01 cmp $0x1,%al
20: 0f 8e 51 04 00 00 jle 0x477
26: 0f b7 45 00 movzwl 0x0(%rbp),%eax
* 2a: bf 00 40 00 00 mov $0x4000,%edi <-- trapping instruction
2f: 41 89 dd mov %ebx,%r13d
32: 41 83 e5 01 and $0x1,%r13d
36: 66 25 00 f0 and $0xf000,%ax
3a: 89 c6 mov %eax,%esi
3c: 89 04 24 mov %eax,(%rsp)
3f: e8 .byte 0xe8