=============================
[ BUG: Invalid wait context ]
6.13.0-syzkaller-00164-g100ceb4817a2 #0 Not tainted
-----------------------------
syz.0.921/9993 is trying to lock:
ffff88802833e5d8 (&sighand->siglock){-.-.}-{3:3}, at: __lock_task_sighand+0xc2/0x340 kernel/signal.c:1379
other info that might help us debug this:
context-{5:5}
4 locks held by syz.0.921/9993:
#0: ffff888054e500a8 (&ctx->uring_lock){+.+.}-{4:4}, at: io_handle_tw_list+0x27c/0x540 io_uring/io_uring.c:1054
#1: ffff888034ae3928 (&acct->lock){+.+.}-{2:2}, at: io_wq_enqueue+0x20a/0xb30 io_uring/io-wq.c:953
#2: ffffffff8e1bbcc0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#2: ffffffff8e1bbcc0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#2: ffffffff8e1bbcc0 (rcu_read_lock){....}-{1:3}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2361 [inline]
#2: ffffffff8e1bbcc0 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run2+0x1c2/0x590 kernel/trace/bpf_trace.c:2403
#3: ffffffff8e1bbcc0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#3: ffffffff8e1bbcc0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#3: ffffffff8e1bbcc0 (rcu_read_lock){....}-{1:3}, at: __lock_task_sighand+0x3f/0x340 kernel/signal.c:1362
stack backtrace:
CPU: 0 UID: 0 PID: 9993 Comm: syz.0.921 Not tainted 6.13.0-syzkaller-00164-g100ceb4817a2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
print_lock_invalid_wait_context kernel/locking/lockdep.c:4826 [inline]
check_wait_context kernel/locking/lockdep.c:4898 [inline]
__lock_acquire+0x878/0x3c40 kernel/locking/lockdep.c:5176
lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
__lock_task_sighand+0xc2/0x340 kernel/signal.c:1379
lock_task_sighand include/linux/sched/signal.h:743 [inline]
do_send_sig_info kernel/signal.c:1267 [inline]
group_send_sig_info+0x290/0x300 kernel/signal.c:1418
bpf_send_signal_common+0x3d3/0x530 kernel/trace/bpf_trace.c:881
____bpf_send_signal kernel/trace/bpf_trace.c:886 [inline]
bpf_send_signal+0x1d/0x30 kernel/trace/bpf_trace.c:884
bpf_prog_631417f49dd64198+0x25/0x4c
bpf_dispatcher_nop_func include/linux/bpf.h:1290 [inline]
__bpf_prog_run include/linux/filter.h:701 [inline]
bpf_prog_run include/linux/filter.h:708 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2362 [inline]
bpf_trace_run2+0x234/0x590 kernel/trace/bpf_trace.c:2403
__bpf_trace_contention_end+0xca/0x110 include/trace/events/lock.h:122
trace_contention_end.constprop.0+0xf0/0x170 include/trace/events/lock.h:122
__pv_queued_spin_lock_slowpath+0x27e/0xc90 kernel/locking/qspinlock.c:557
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline]
queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock+0x210/0x2c0 kernel/locking/spinlock_debug.c:116
io_wq_enqueue+0x20a/0xb30 io_uring/io-wq.c:953
io_queue_iowq+0x28b/0x5c0 io_uring/io_uring.c:537
io_queue_async+0x1e7/0x420 io_uring/io_uring.c:1932
io_queue_sqe io_uring/io_uring.c:1954 [inline]
io_req_task_submit+0x1c8/0x1f0 io_uring/io_uring.c:1371
io_handle_tw_list+0x4c6/0x540 io_uring/io_uring.c:1057
tctx_task_work_run+0xac/0x390 io_uring/io_uring.c:1121
tctx_task_work+0x7b/0xd0 io_uring/io_uring.c:1139
task_work_run+0x151/0x250 kernel/task_work.c:239
get_signal+0x1d3/0x26c0 kernel/signal.c:2809
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3094985d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f30957b0038 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: 0000000000000100 RBX: 00007f3094b75fa0 RCX: 00007f3094985d29
RDX: 0000000000000000 RSI: 00000000000047ba RDI: 0000000000000005
RBP: 00007f3094a01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f3094b75fa0 R15: 00007ffe4d6a4778
</TASK>