Warning: Permanently added '10.128.0.218' (ED25519) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program [ 72.654705][ T4254] [ 72.657095][ T4254] ============================================ [ 72.663277][ T4254] WARNING: possible recursive locking detected [ 72.669415][ T4254] 6.1.120-syzkaller-00773-g52f863f820fd #0 Tainted: G W [ 72.677727][ T4254] -------------------------------------------- [ 72.683862][ T4254] syz-executor186/4254 is trying to acquire lock: [ 72.690273][ T4254] ffff88803068d218 (&qs->lock){-...}-{2:2}, at: __queue_map_get+0x146/0x4b0 [ 72.698992][ T4254] [ 72.698992][ T4254] but task is already holding lock: [ 72.706353][ T4254] ffff88801fa4b218 (&qs->lock){-...}-{2:2}, at: __queue_map_get+0x146/0x4b0 [ 72.715052][ T4254] [ 72.715052][ T4254] other info that might help us debug this: [ 72.723100][ T4254] Possible unsafe locking scenario: [ 72.723100][ T4254] [ 72.730567][ T4254] CPU0 [ 72.733835][ T4254] ---- [ 72.737102][ T4254] lock(&qs->lock); [ 72.740990][ T4254] lock(&qs->lock); [ 72.744880][ T4254] [ 72.744880][ T4254] *** DEADLOCK *** [ 72.744880][ T4254] [ 72.753049][ T4254] May be due to missing lock nesting notation [ 72.753049][ T4254] [ 72.761358][ T4254] 4 locks held by syz-executor186/4254: [ 72.766892][ T4254] #0: ffff888020e5b1b8 (&tsk->futex_exit_mutex){+.+.}-{3:3}, at: futex_exit_release+0x30/0x1e0 [ 72.777367][ T4254] #1: ffffffff8d32b080 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x110/0x410 [ 72.786766][ T4254] #2: ffff88801fa4b218 (&qs->lock){-...}-{2:2}, at: __queue_map_get+0x146/0x4b0 [ 72.795902][ T4254] #3: ffffffff8d32b080 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x110/0x410 [ 72.805303][ T4254] [ 72.805303][ T4254] stack backtrace: [ 72.811201][ T4254] CPU: 1 PID: 4254 Comm: syz-executor186 Tainted: G W 6.1.120-syzkaller-00773-g52f863f820fd #0 [ 72.822913][ T4254] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 [ 72.832978][ T4254] Call Trace: [ 72.836272][ T4254] [ 72.839205][ T4254] dump_stack_lvl+0x1e3/0x2cb [ 72.843912][ T4254] ? nf_tcp_handle_invalid+0x642/0x642 [ 72.849380][ T4254] ? panic+0x764/0x764 [ 72.853454][ T4254] validate_chain+0x4711/0x5950 [ 72.858315][ T4254] ? __bitmap_and+0x2ef/0x310 [ 72.863009][ T4254] ? _find_next_and_bit+0x141/0x180 [ 72.868213][ T4254] ? load_balance+0x2122/0x8260 [ 72.873074][ T4254] ? memcpy+0x3c/0x60 [ 72.877061][ T4254] ? reacquire_held_locks+0x660/0x660 [ 72.882435][ T4254] ? load_balance+0x2122/0x8260 [ 72.887302][ T4254] ? look_up_lock_class+0x77/0x140 [ 72.892417][ T4254] ? register_lock_class+0x100/0x990 [ 72.897721][ T4254] ? __lock_acquire+0x125b/0x1f80 [ 72.902754][ T4254] ? is_dynamic_key+0x260/0x260 [ 72.907622][ T4254] ? mark_lock+0x9a/0x340 [ 72.911964][ T4254] __lock_acquire+0x125b/0x1f80 [ 72.916923][ T4254] lock_acquire+0x1f8/0x5a0 [ 72.921434][ T4254] ? __queue_map_get+0x146/0x4b0 [ 72.926375][ T4254] ? read_lock_is_recursive+0x10/0x10 [ 72.931754][ T4254] ? preempt_count_add+0x8f/0x180 [ 72.936816][ T4254] ? mark_lock+0x9a/0x340 [ 72.941178][ T4254] ? __lock_acquire+0x125b/0x1f80 [ 72.946215][ T4254] _raw_spin_lock_irqsave+0xd1/0x120 [ 72.951528][ T4254] ? __queue_map_get+0x146/0x4b0 [ 72.956464][ T4254] ? _raw_spin_lock+0x40/0x40 [ 72.961146][ T4254] __queue_map_get+0x146/0x4b0 [ 72.965908][ T4254] ? read_lock_is_recursive+0x10/0x10 [ 72.971287][ T4254] ? stack_map_peek_elem+0x20/0x20 [ 72.976397][ T4254] ? __cant_sleep+0x270/0x270 [ 72.981081][ T4254] bpf_prog_00798911c748094f+0x3a/0x3e [ 72.986548][ T4254] bpf_trace_run2+0x1fd/0x410 [ 72.991229][ T4254] ? bpf_trace_run2+0x110/0x410 [ 72.996168][ T4254] ? bpf_trace_run1+0x3d0/0x3d0 [ 73.001034][ T4254] ? __bpf_trace_lock+0x10/0x10 [ 73.005897][ T4254] __traceiter_contention_begin+0x74/0xa0 [ 73.011627][ T4254] trace_contention_begin+0x14f/0x1a0 [ 73.017038][ T4254] __pv_queued_spin_lock_slowpath+0x111/0xc50 [ 73.023118][ T4254] ? __pv_queued_spin_unlock_slowpath+0x2e0/0x2e0 [ 73.029552][ T4254] ? reacquire_held_locks+0x660/0x660 [ 73.034926][ T4254] queued_spin_lock_slowpath+0x42/0x50 [ 73.040395][ T4254] do_raw_spin_lock+0x269/0x370 [ 73.045247][ T4254] ? mark_lock+0x9a/0x340 [ 73.049589][ T4254] ? __rwlock_init+0x140/0x140 [ 73.054352][ T4254] ? __lock_acquire+0x125b/0x1f80 [ 73.059386][ T4254] ? _raw_spin_lock_irqsave+0xac/0x120 [ 73.064867][ T4254] _raw_spin_lock_irqsave+0xdd/0x120 [ 73.070157][ T4254] ? _raw_spin_lock+0x40/0x40 [ 73.074843][ T4254] __queue_map_get+0x146/0x4b0 [ 73.079609][ T4254] ? read_lock_is_recursive+0x10/0x10 [ 73.084994][ T4254] ? stack_map_peek_elem+0x20/0x20 [ 73.090105][ T4254] ? __cant_sleep+0x270/0x270 [ 73.094785][ T4254] ? bpf_trace_run2+0x1fd/0x410 [ 73.099667][ T4254] ? bpf_trace_run2+0x110/0x410 [ 73.104516][ T4254] ? bpf_trace_run1+0x3d0/0x3d0 [ 73.109368][ T4254] ? __might_sleep+0xb0/0xb0 [ 73.113971][ T4254] ? __bpf_trace_lock+0x10/0x10 [ 73.118826][ T4254] ? __traceiter_contention_begin+0x74/0xa0 [ 73.124795][ T4254] ? trace_contention_begin+0x12f/0x170 [ 73.130362][ T4254] ? __mutex_lock+0x143/0xd80 [ 73.135055][ T4254] ? acct_collect+0x63e/0x7f0 [ 73.139745][ T4254] ? lockdep_hardirqs_on_prepare+0x438/0x7a0 [ 73.145736][ T4254] ? futex_exit_release+0x30/0x1e0 [ 73.150852][ T4254] ? print_irqtrace_events+0x210/0x210 [ 73.156325][ T4254] ? mutex_lock_nested+0x10/0x10 [ 73.161275][ T4254] ? _raw_spin_unlock_irq+0x1f/0x40 [ 73.166569][ T4254] ? lockdep_hardirqs_on+0x94/0x130 [ 73.171772][ T4254] ? _raw_spin_unlock_irq+0x2a/0x40 [ 73.176979][ T4254] ? acct_collect+0x63e/0x7f0 [ 73.181668][ T4254] ? futex_exit_release+0x30/0x1e0 [ 73.186782][ T4254] ? exit_mm_release+0x16/0x30 [ 73.191572][ T4254] ? exit_mm+0xa9/0x300 [ 73.195743][ T4254] ? do_exit+0x26a0/0x26a0 [ 73.200169][ T4254] ? taskstats_exit+0x399/0x920 [ 73.205025][ T4254] ? tty_audit_exit+0x150/0x1f0 [ 73.209889][ T4254] ? do_exit+0x9f6/0x26a0 [ 73.214232][ T4254] ? put_task_struct+0x80/0x80 [ 73.219007][ T4254] ? lockdep_hardirqs_on_prepare+0x438/0x7a0 [ 73.225002][ T4254] ? print_irqtrace_events+0x210/0x210 [ 73.230470][ T4254] ? _raw_spin_unlock_irq+0x1f/0x40 [ 73.235674][ T4254] ? lockdep_hardirqs_on+0x94/0x130 [ 73.240878][ T4254] ? do_group_exit+0x202/0x2b0 [ 73.245655][ T4254] ? __x64_sys_exit_group+0x3b/0x40 [ 73.250880][ T4254] ? do_syscall_64+0x3b/0xb0 executing program executing program executing program executing program executing program executing program [ 73.255494][ T4254] ? clear_bhb_loop+0x45/0xa0 [ 73.260178][ T4254] ? entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 73.266276][ T4254] executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program