INFO: task syz-executor.0:4415 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.0 state:D stack:28872 pid: 4415 ppid: 6545 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: 0033:0x7fa2c3accb32
RSP: 002b:00007fa2c10000f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: 00000000206d3000 RBX: 0000000000008011 RCX: 00007fa2c3accb32
RDX: 0000000000000003 RSI: 0000000000040000 RDI: 00000000206d3000
RBP: 00000000206d3000 R08: 0000000000000005 R09: 0000000010000000
R10: 0000000000008011 R11: 0000000000000206 R12: 0000000020000040
R13: 00000000206d3000 R14: 0000000020000000 R15: 0000000020ee7000
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/6220:
#0: ffff8880245a7db0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
1 lock held by syz-executor.0/4413:
1 lock held by syz-executor.0/4415:
#0: ffff8880752510a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_ring_ctx_wait_and_kill+0x72/0x322 fs/io_uring.c:9565
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 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: 2968 Comm: systemd-journal Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__orc_find+0x8f/0xf0 arch/x86/kernel/unwind_orc.c:49
Code: d8 48 c1 e8 03 42 0f b6 14 38 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 48 48 63 03 48 01 d8 48 39 c1 73 b0 4c 8d 63 fc <49> 39 ec 73 b3 4d 29 ee 49 c1 fe 02 4b 8d 04 76 48 8d 04 46 48 83
RSP: 0018:ffffc90002097678 EFLAGS: 00000287
RAX: ffffffff81cc3249 RBX: ffffffff8da63678 RCX: ffffffff81cc3209
RDX: 0000000000000000 RSI: ffffffff8e18de38 RDI: ffffffff8da6365c
RBP: ffffffff8da6365c R08: ffffffff8e18de38 R09: 0000000000000001
R10: fffff52000412efe R11: 000000000008808a R12: ffffffff8da63674
R13: ffffffff8da6365c R14: ffffffff8da6365c R15: dffffc0000000000
FS: 00007f11f62478c0(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f11f37e7000 CR3: 0000000018c66000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
orc_find arch/x86/kernel/unwind_orc.c:173 [inline]
unwind_next_frame+0x32a/0x1ce0 arch/x86/kernel/unwind_orc.c:443
arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
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_node include/linux/gfp.h:570 [inline]
kmem_getpages mm/slab.c:1377 [inline]
cache_grow_begin+0x75/0x470 mm/slab.c:2593
fallback_alloc+0x1e4/0x2e0 mm/slab.c:3140
__do_cache_alloc mm/slab.c:3282 [inline]
slab_alloc mm/slab.c:3316 [inline]
kmem_cache_alloc+0x367/0x560 mm/slab.c:3507
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: 0033:0x7f11f55029c7
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:00007fff0a577788 EFLAGS: 00000246 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffda RBX: 00007fff0a57a7b0 RCX: 00007f11f55029c7
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000055c3aa8f19a3
RBP: 00007fff0a5778d0 R08: 000055c3aa8e73e5 R09: 0000000000000018
R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 000055c3ab4cc8c0 R15: 00007fff0a577dc0
----------------
Code disassembly (best guess):
0: d8 48 c1 fmuls -0x3f(%rax)
3: e8 03 42 0f b6 callq 0xb60f420b
8: 14 38 adc $0x38,%al
a: 48 89 d8 mov %rbx,%rax
d: 83 e0 07 and $0x7,%eax
10: 83 c0 03 add $0x3,%eax
13: 38 d0 cmp %dl,%al
15: 7c 04 jl 0x1b
17: 84 d2 test %dl,%dl
19: 75 48 jne 0x63
1b: 48 63 03 movslq (%rbx),%rax
1e: 48 01 d8 add %rbx,%rax
21: 48 39 c1 cmp %rax,%rcx
24: 73 b0 jae 0xffffffd6
26: 4c 8d 63 fc lea -0x4(%rbx),%r12
* 2a: 49 39 ec cmp %rbp,%r12 <-- trapping instruction
2d: 73 b3 jae 0xffffffe2
2f: 4d 29 ee sub %r13,%r14
32: 49 c1 fe 02 sar $0x2,%r14
36: 4b 8d 04 76 lea (%r14,%r14,2),%rax
3a: 48 8d 04 46 lea (%rsi,%rax,2),%rax
3e: 48 rex.W
3f: 83 .byte 0x83