Warning: Permanently added '10.128.1.190' (ED25519) to the list of known hosts. executing program [ 94.176067][ T5059] [ 94.178459][ T5059] ================================ [ 94.183585][ T5059] WARNING: inconsistent lock state [ 94.188710][ T5059] 6.7.0-rc1-next-20231116-syzkaller #0 Not tainted [ 94.195229][ T5059] -------------------------------- [ 94.200351][ T5059] inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage. [ 94.207214][ T5059] syz-executor207/5059 [HC0[0]:SC0[0]:HE1:SE1] takes: [ 94.214011][ T5059] ffff888025c41298 (&sighand->siglock){?...}-{2:2}, at: ptrace_attach+0x401/0x650 [ 94.223336][ T5059] {IN-HARDIRQ-W} state was registered at: [ 94.229161][ T5059] lock_acquire+0x1b1/0x530 [ 94.233785][ T5059] _raw_spin_lock_irqsave+0x3a/0x50 [ 94.239194][ T5059] __lock_task_sighand+0xc2/0x340 [ 94.244370][ T5059] send_sigqueue+0x1d4/0x840 [ 94.249096][ T5059] posix_timer_fn+0x181/0x3d0 [ 94.253915][ T5059] __hrtimer_run_queues+0x20c/0xc20 [ 94.259235][ T5059] hrtimer_interrupt+0x31b/0x800 [ 94.264296][ T5059] __sysvec_apic_timer_interrupt+0x10c/0x410 [ 94.270412][ T5059] sysvec_apic_timer_interrupt+0x90/0xb0 [ 94.276178][ T5059] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 94.282283][ T5059] _raw_spin_unlock_irqrestore+0x31/0x70 [ 94.288020][ T5059] do_timer_settime+0x260/0x2f0 [ 94.292988][ T5059] __x64_sys_timer_settime+0x266/0x2c0 [ 94.298585][ T5059] do_syscall_64+0x40/0x110 [ 94.303218][ T5059] entry_SYSCALL_64_after_hwframe+0x62/0x6a [ 94.309242][ T5059] irq event stamp: 13807 [ 94.313494][ T5059] hardirqs last enabled at (13807): [] _raw_spin_unlock_irqrestore+0x4e/0x70 [ 94.323936][ T5059] hardirqs last disabled at (13806): [] _raw_spin_lock_irqsave+0x4e/0x50 [ 94.333963][ T5059] softirqs last enabled at (13794): [] __fpu_restore_sig+0x6a1/0x13a0 [ 94.343806][ T5059] softirqs last disabled at (13792): [] __fpu_restore_sig+0x365/0x13a0 [ 94.353658][ T5059] [ 94.353658][ T5059] other info that might help us debug this: [ 94.361720][ T5059] Possible unsafe locking scenario: [ 94.361720][ T5059] [ 94.369175][ T5059] CPU0 [ 94.372455][ T5059] ---- [ 94.375739][ T5059] lock(&sighand->siglock); [ 94.380340][ T5059] [ 94.383795][ T5059] lock(&sighand->siglock); [ 94.388568][ T5059] [ 94.388568][ T5059] *** DEADLOCK *** [ 94.388568][ T5059] [ 94.396714][ T5059] 2 locks held by syz-executor207/5059: [ 94.402265][ T5059] #0: ffff88801d66e3c8 (&sig->cred_guard_mutex){+.+.}-{3:3}, at: ptrace_attach+0x1eb/0x650 [ 94.412496][ T5059] #1: ffffffff8cc0a098 (tasklist_lock){++++}-{2:2}, at: ptrace_attach+0x2c3/0x650 [ 94.421859][ T5059] [ 94.421859][ T5059] stack backtrace: [ 94.427765][ T5059] CPU: 0 PID: 5059 Comm: syz-executor207 Not tainted 6.7.0-rc1-next-20231116-syzkaller #0 [ 94.437679][ T5059] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 [ 94.447752][ T5059] Call Trace: [ 94.451041][ T5059] [ 94.453988][ T5059] dump_stack_lvl+0xd9/0x1b0 [ 94.458624][ T5059] mark_lock+0x91a/0xc50 [ 94.462881][ T5059] ? pick_eevdf+0x2fb/0x6c0 [ 94.467412][ T5059] ? print_usage_bug.part.0+0x550/0x550 [ 94.472974][ T5059] ? try_to_wake_up+0x5ce/0x13d0 [ 94.477933][ T5059] ? reacquire_held_locks+0x4c0/0x4c0 [ 94.483319][ T5059] ? reacquire_held_locks+0x4c0/0x4c0 [ 94.488716][ T5059] __lock_acquire+0x919/0x3b10 [ 94.493506][ T5059] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 94.499506][ T5059] ? send_sig_info+0xe9/0x150 [ 94.504207][ T5059] lock_acquire+0x1b1/0x530 [ 94.508726][ T5059] ? ptrace_attach+0x401/0x650 [ 94.513525][ T5059] ? lock_sync+0x190/0x190 [ 94.517952][ T5059] ? lockdep_hardirqs_on+0x7c/0x110 [ 94.523181][ T5059] ? _raw_spin_unlock_irqrestore+0x3b/0x70 [ 94.529005][ T5059] ? send_sig_info+0xf3/0x150 [ 94.533704][ T5059] ? do_raw_write_lock+0x11d/0x3a0 [ 94.538834][ T5059] ? get_signal+0x2770/0x2770 [ 94.543532][ T5059] ? do_raw_read_unlock+0xe0/0xe0 [ 94.548676][ T5059] _raw_spin_lock+0x2e/0x40 [ 94.553208][ T5059] ? ptrace_attach+0x401/0x650 [ 94.558019][ T5059] ptrace_attach+0x401/0x650 [ 94.562700][ T5059] __do_sys_ptrace+0x204/0x230 [ 94.567532][ T5059] do_syscall_64+0x40/0x110 [ 94.572067][ T5059] entry_SYSCALL_64_after_hwframe+0x62/0x6a [ 94.578014][ T5059] RIP: 0033:0x7f726faf87f9 [ 94.582445][ T5059] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 [ 94.602083][ T5059] RSP: 002b:00007f726fab7158 EFLAGS: 00000246 ORIG_RAX: 0000000000000065 [ 94.610522][ T5059] RAX: ffffffffffffffda RBX: 00007f726fb7f328 RCX: 00007f726faf87f9 [ 94.618507][ T5059] RDX: 0000000000000000 RSI: 00000000000013c4 RDI: 0000000000000010 [ 94.626511][ T5059] RBP: 00007f726fb7f320 R08: 00007f726fab76c0 R09: 0000000000000000 [ 94.634506][ T5059] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f726fb7f32c [ 94.642496][ T5059] R13: 0000000000000000 R14: 00007ffd413eb1b0 R15: 00007ffd413eb298 [ 94.650491][ T5059] [ 97.246201][ T780] cfg80211: failed to load regulatory.db