INFO: task syz-executor.0:3889 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:26320 pid: 3889 ppid: 6535 flags:0x00024004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6253
schedule+0x12b/0x1f0 kernel/sched/core.c:6326
io_uring_cancel_generic+0x5b3/0x661 fs/io_uring.c:9877
io_uring_files_cancel include/linux/io_uring.h:16 [inline]
do_exit+0x281/0x24f0 kernel/exit.c:787
do_group_exit+0x168/0x2d0 kernel/exit.c:929
get_signal+0x1740/0x2120 kernel/signal.c:2852
arch_do_signal_or_restart+0x9c/0x730 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+0x191/0x220 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x2e/0x70 kernel/entry/common.c:300
do_syscall_64+0x53/0xd0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f29c6f9aae9
RSP: 002b:00007f29c44ef218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007f29c70ae028 RCX: 00007f29c6f9aae9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f29c70ae02c
RBP: 00007f29c70ae020 R08: 000000000000000e R09: 0000000000000000
R10: 0000000000000053 R11: 0000000000000246 R12: 00007f29c70ae02c
R13: 00007ffda7aa9ddf R14: 00007f29c44ef300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8cb1db40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by in:imklog/6174:
#0: ffff88807f039c70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 fs/file.c:990
=============================================
NMI backtrace for cpu 0
CPU: 0 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+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x16a/0x280 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+0xc82/0xcd0 kernel/hung_task.c:295
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 6989 Comm: kworker/1:2 Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:unwind_get_return_address+0x4c/0x80 arch/x86/kernel/unwind_orc.c:318
Code: 3b 00 74 3a 48 83 c3 48 49 89 df 49 c1 ef 03 43 80 3c 37 00 74 08 48 89 df e8 50 a9 95 00 48 8b 3b e8 78 92 1c 00 85 c0 74 14 <43> 80 3c 37 00 74 08 48 89 df e8 35 a9 95 00 48 8b 03 eb 02 31 c0
RSP: 0018:ffffc9000c8bf6e0 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffc9000c8bf748 RCX: ffffffff8f33b000
RDX: ffffffff8f485501 RSI: 0000000000000001 RDI: ffffffff8171cf4b
RBP: ffffc9000c8bf790 R08: dffffc0000000000 R09: ffffc9000c8bf750
R10: fffff52001917eec R11: 0000000000000000 R12: ffff88801e560000
R13: ffffffff8171d010 R14: dffffc0000000000 R15: 1ffff92001917ee9
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c025969888 CR3: 000000000c88e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0xf8/0x140 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x11b/0x1e0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
__kasan_slab_alloc+0xb6/0xf0 mm/kasan/common.c:467
kasan_slab_alloc include/linux/kasan.h:259 [inline]
slab_post_alloc_hook mm/slab.h:519 [inline]
slab_alloc_node mm/slub.c:3234 [inline]
kmem_cache_alloc_node+0x201/0x370 mm/slub.c:3270
__alloc_skb+0xd8/0x5a0 net/core/skbuff.c:414
alloc_skb include/linux/skbuff.h:1126 [inline]
nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:745 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:802 [inline]
nsim_dev_trap_report_work+0x264/0xaf0 drivers/net/netdevsim/dev.c:843
process_one_work+0x853/0x1140 kernel/workqueue.c:2298
worker_thread+0xac1/0x1320 kernel/workqueue.c:2445
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
----------------
Code disassembly (best guess):
0: 3b 00 cmp (%rax),%eax
2: 74 3a je 0x3e
4: 48 83 c3 48 add $0x48,%rbx
8: 49 89 df mov %rbx,%r15
b: 49 c1 ef 03 shr $0x3,%r15
f: 43 80 3c 37 00 cmpb $0x0,(%r15,%r14,1)
14: 74 08 je 0x1e
16: 48 89 df mov %rbx,%rdi
19: e8 50 a9 95 00 callq 0x95a96e
1e: 48 8b 3b mov (%rbx),%rdi
21: e8 78 92 1c 00 callq 0x1c929e
26: 85 c0 test %eax,%eax
28: 74 14 je 0x3e
* 2a: 43 80 3c 37 00 cmpb $0x0,(%r15,%r14,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 48 89 df mov %rbx,%rdi
34: e8 35 a9 95 00 callq 0x95a96e
39: 48 8b 03 mov (%rbx),%rax
3c: eb 02 jmp 0x40
3e: 31 c0 xor %eax,%eax