INFO: task syz-executor.5:15892 blocked for more than 143 seconds.
Not tainted 5.18.0-syzkaller-00161-g1e57930e9f40 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:27240 pid:15892 ppid: 3623 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388
schedule+0xd2/0x1f0 kernel/sched/core.c:6460
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1860
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x373/0x530 kernel/sched/completion.c:106
io_wq_exit_workers fs/io-wq.c:1266 [inline]
io_wq_put_and_exit+0x4d6/0xe40 fs/io-wq.c:1301
io_uring_clean_tctx fs/io_uring.c:10394 [inline]
io_uring_cancel_generic+0x538/0x5bc fs/io_uring.c:10464
io_uring_files_cancel include/linux/io_uring.h:18 [inline]
do_exit+0x4f9/0x2a00 kernel/exit.c:750
do_group_exit+0xd2/0x2f0 kernel/exit.c:925
get_signal+0x22df/0x24c0 kernel/signal.c:2864
arch_do_signal_or_restart+0x82/0x20f0 arch/x86/kernel/signal.c:867
exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201
__syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:294
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f2e5ba890e9
RSP: 002b:00007f2e5cbef218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007f2e5bb9bf68 RCX: 00007f2e5ba890e9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f2e5bb9bf6c
RBP: 00007f2e5bb9bf60 R08: 00007ffe11fe6080 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000246 R12: 00007f2e5bb9bf6c
R13: 00007ffe11fdce3f R14: 00007f2e5cbef300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8bd81ea0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6467
2 locks held by getty/3283:
#0: ffff888148622098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002ce62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcea/0x1230 drivers/tty/n_tty.c:2075
5 locks held by kworker/u4:9/11476:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 5.18.0-syzkaller-00161-g1e57930e9f40 #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+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:369
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 14 Comm: kworker/0:1 Not tainted 5.18.0-syzkaller-00161-g1e57930e9f40 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:hlock_class kernel/locking/lockdep.c:197 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4702 [inline]
RIP: 0010:__lock_acquire+0x3f3/0x56c0 kernel/locking/lockdep.c:4979
Code: 6c 24 10 be 08 00 00 00 81 e5 ff 1f 00 00 48 89 e8 48 c1 f8 06 48 8d 3c c5 00 e9 06 90 e8 05 a0 67 00 48 0f a3 2d 0d 9b a9 0e <0f> 83 fe 0c 00 00 48 8d 6c 6d 00 48 c1 e5 06 48 81 c5 20 ed 06 90
RSP: 0018:ffffc90000137788 EFLAGS: 00000047
RAX: 0000000000000001 RBX: ffff8880b9c3dd00 RCX: ffffffff815d4deb
RDX: fffffbfff200dd21 RSI: 0000000000000008 RDI: ffffffff9006e900
RBP: 0000000000000026 R08: 0000000000000000 R09: ffffffff9006e907
R10: fffffbfff200dd20 R11: 0000000000000001 R12: ffff888010eda8a8
R13: ffff888010ed9d80 R14: 0000000000040000 R15: 00000000000c0026
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00fa7ae40 CR3: 000000000ba8e000 CR4: 0000000000350ef0
Call Trace:
lock_acquire kernel/locking/lockdep.c:5641 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5606
local_lock_acquire include/linux/local_lock_internal.h:29 [inline]
put_cpu_partial+0x61/0x210 mm/slub.c:2571
get_partial_node.part.0+0x129/0x220 mm/slub.c:2169
get_partial_node mm/slub.c:2150 [inline]
get_partial mm/slub.c:2262 [inline]
___slab_alloc+0x7b3/0xf20 mm/slub.c:3000
__slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3092
slab_alloc_node mm/slub.c:3183 [inline]
__kmalloc_node_track_caller+0x2cb/0x360 mm/slub.c:4947
kmalloc_reserve net/core/skbuff.c:354 [inline]
__alloc_skb+0xde/0x340 net/core/skbuff.c:426
alloc_skb include/linux/skbuff.h:1300 [inline]
nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:742 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:799 [inline]
nsim_dev_trap_report_work+0x291/0xba0 drivers/net/netdevsim/dev.c:840
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
----------------
Code disassembly (best guess):
0: 6c insb (%dx),%es:(%rdi)
1: 24 10 and $0x10,%al
3: be 08 00 00 00 mov $0x8,%esi
8: 81 e5 ff 1f 00 00 and $0x1fff,%ebp
e: 48 89 e8 mov %rbp,%rax
11: 48 c1 f8 06 sar $0x6,%rax
15: 48 8d 3c c5 00 e9 06 lea -0x6ff91700(,%rax,8),%rdi
1c: 90
1d: e8 05 a0 67 00 callq 0x67a027
22: 48 0f a3 2d 0d 9b a9 bt %rbp,0xea99b0d(%rip) # 0xea99b37
29: 0e
* 2a: 0f 83 fe 0c 00 00 jae 0xd2e <-- trapping instruction
30: 48 8d 6c 6d 00 lea 0x0(%rbp,%rbp,2),%rbp
35: 48 c1 e5 06 shl $0x6,%rbp
39: 48 81 c5 20 ed 06 90 add $0xffffffff9006ed20,%rbp