=============================
[ BUG: Invalid wait context ]
6.13.0-rc7-syzkaller-00191-gfda5e3f28400 #0 Not tainted
-----------------------------
udevd/5352 is trying to lock:
ffff8880230e8958 (&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}
5 locks held by udevd/5352:
 #0: ffff88801fec2420 (sb_writers#6){.+.+}-{0:0}, at: open_last_lookups fs/namei.c:3737 [inline]
 #0: ffff88801fec2420 (sb_writers#6){.+.+}-{0:0}, at: path_openat+0x1f8d/0x2d60 fs/namei.c:3984
 #1: ffff88802deaeb48 (&type->i_mutex_dir_key#5){++++}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline]
 #1: ffff88802deaeb48 (&type->i_mutex_dir_key#5){++++}-{4:4}, at: open_last_lookups fs/namei.c:3745 [inline]
 #1: ffff88802deaeb48 (&type->i_mutex_dir_key#5){++++}-{4:4}, at: path_openat+0x153e/0x2d60 fs/namei.c:3984
 #2: ffff888105390c90 (&sbinfo->stat_lock){+.+.}-{2:2}, at: shmem_reserve_inode mm/shmem.c:355 [inline]
 #2: ffff888105390c90 (&sbinfo->stat_lock){+.+.}-{2:2}, at: __shmem_get_inode mm/shmem.c:2873 [inline]
 #2: ffff888105390c90 (&sbinfo->stat_lock){+.+.}-{2:2}, at: shmem_get_inode+0x767/0xf00 mm/shmem.c:2951
 #3: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #3: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #3: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2361 [inline]
 #3: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run2+0x1c2/0x590 kernel/trace/bpf_trace.c:2403
 #4: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #4: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #4: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: __lock_task_sighand+0x3f/0x340 kernel/signal.c:1362
stack backtrace:
CPU: 2 UID: 0 PID: 5352 Comm: udevd Not tainted 6.13.0-rc7-syzkaller-00191-gfda5e3f28400 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
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+0x25/0x48
 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+0x231/0x590 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
 shmem_reserve_inode mm/shmem.c:355 [inline]
 __shmem_get_inode mm/shmem.c:2873 [inline]
 shmem_get_inode+0x767/0xf00 mm/shmem.c:2951
 shmem_mknod+0x1a8/0x450 mm/shmem.c:3673
 lookup_open.isra.0+0x1174/0x14c0 fs/namei.c:3649
 open_last_lookups fs/namei.c:3748 [inline]
 path_openat+0x904/0x2d60 fs/namei.c:3984
 do_filp_open+0x20c/0x470 fs/namei.c:4014
 do_sys_openat2+0x17a/0x1e0 fs/open.c:1402
 do_sys_open fs/open.c:1417 [inline]
 __do_sys_openat fs/open.c:1433 [inline]
 __se_sys_openat fs/open.c:1428 [inline]
 __x64_sys_openat+0x175/0x210 fs/open.c:1428
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7d8fb169a4
Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffe8d5406f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000056255c94e040 RCX: 00007f7d8fb169a4
RDX: 0000000000080141 RSI: 000056255c9310d8 RDI: 00000000ffffff9c
RBP: 000056255c9310d8 R08: 00000000ffffffff R09: 0000000000000000
R10: 00000000000001a4 R11: 0000000000000246 R12: 0000000000080141
R13: ffffffffffffffff R14: 00000000ffffffff R15: 00000000ffffffff
 </TASK>