Warning: Permanently added '10.128.0.16' (ED25519) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 66.468293][ T3593] [ 66.471390][ T3593] ============================================ [ 66.479972][ T3593] WARNING: possible recursive locking detected [ 66.486309][ T3593] 6.1.85-syzkaller #0 Not tainted [ 66.492475][ T3593] -------------------------------------------- [ 66.499195][ T3593] syz-executor188/3593 is trying to acquire lock: [ 66.506500][ T3593] ffff888078b20238 (&trie->lock){-.-.}-{2:2}, at: trie_delete_elem+0x90/0x690 [ 66.517821][ T3593] [ 66.517821][ T3593] but task is already holding lock: [ 66.525577][ T3593] ffff888073a9d238 (&trie->lock){-.-.}-{2:2}, at: trie_delete_elem+0x90/0x690 [ 66.535198][ T3593] [ 66.535198][ T3593] other info that might help us debug this: [ 66.546585][ T3593] Possible unsafe locking scenario: [ 66.546585][ T3593] [ 66.555985][ T3593] CPU0 [ 66.559441][ T3593] ---- [ 66.564652][ T3593] lock(&trie->lock); [ 66.571362][ T3593] lock(&trie->lock); [ 66.577942][ T3593] [ 66.577942][ T3593] *** DEADLOCK *** [ 66.577942][ T3593] [ 66.589108][ T3593] May be due to missing lock nesting notation [ 66.589108][ T3593] [ 66.600682][ T3593] 4 locks held by syz-executor188/3593: [ 66.608084][ T3593] #0: ffff8880233a4f78 (&tsk->futex_exit_mutex){+.+.}-{3:3}, at: futex_exit_release+0x30/0x1e0 [ 66.621663][ T3593] #1: ffffffff8d12ac40 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x110/0x410 [ 66.634798][ T3593] #2: ffff888073a9d238 (&trie->lock){-.-.}-{2:2}, at: trie_delete_elem+0x90/0x690 [ 66.645279][ T3593] #3: ffffffff8d12ac40 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x110/0x410 [ 66.655381][ T3593] [ 66.655381][ T3593] stack backtrace: [ 66.664004][ T3593] CPU: 0 PID: 3593 Comm: syz-executor188 Not tainted 6.1.85-syzkaller #0 [ 66.673157][ T3593] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 66.685101][ T3593] Call Trace: [ 66.689045][ T3593] [ 66.693731][ T3593] dump_stack_lvl+0x1e3/0x2cb [ 66.701916][ T3593] ? nf_tcp_handle_invalid+0x642/0x642 [ 66.710169][ T3593] ? panic+0x75d/0x75d [ 66.717665][ T3593] validate_chain+0x4711/0x5950 [ 66.723529][ T3593] ? reacquire_held_locks+0x660/0x660 [ 66.729665][ T3593] ? __lock_acquire+0x1f80/0x1f80 [ 66.735106][ T3593] ? validate_chain+0x112/0x5950 [ 66.740638][ T3593] ? preempt_count_add+0x8f/0x180 [ 66.746589][ T3593] ? reacquire_held_locks+0x660/0x660 [ 66.752408][ T3593] ? mark_lock+0x9a/0x340 [ 66.756876][ T3593] __lock_acquire+0x125b/0x1f80 [ 66.762944][ T3593] lock_acquire+0x1f8/0x5a0 [ 66.768186][ T3593] ? trie_delete_elem+0x90/0x690 [ 66.774347][ T3593] ? read_lock_is_recursive+0x10/0x10 [ 66.780134][ T3593] ? __lock_acquire+0x125b/0x1f80 [ 66.786409][ T3593] _raw_spin_lock_irqsave+0xd1/0x120 [ 66.792063][ T3593] ? trie_delete_elem+0x90/0x690 [ 66.797650][ T3593] ? _raw_spin_lock+0x40/0x40 [ 66.802520][ T3593] ? read_lock_is_recursive+0x10/0x10 [ 66.809316][ T3593] ? validate_chain+0x112/0x5950 [ 66.814861][ T3593] trie_delete_elem+0x90/0x690 [ 66.820109][ T3593] ? __cant_sleep+0x270/0x270 [ 66.825420][ T3593] bpf_prog_fdee3c9a1e8a2a6e+0x3d/0x41 [ 66.831412][ T3593] bpf_trace_run2+0x1fd/0x410 [ 66.837409][ T3593] ? bpf_trace_run2+0x110/0x410 [ 66.842616][ T3593] ? bpf_trace_run1+0x3d0/0x3d0 [ 66.847879][ T3593] ? validate_chain+0x112/0x5950 [ 66.854449][ T3593] ? __bpf_trace_contention_begin+0x10/0x10 [ 66.860897][ T3593] __traceiter_contention_end+0x74/0xa0 [ 66.866572][ T3593] trace_contention_end+0x14c/0x190 [ 66.872340][ T3593] __pv_queued_spin_lock_slowpath+0x935/0xc50 [ 66.879804][ T3593] ? __pv_queued_spin_unlock_slowpath+0x2e0/0x2e0 [ 66.886355][ T3593] queued_spin_lock_slowpath+0x42/0x50 [ 66.891995][ T3593] do_raw_spin_lock+0x269/0x370 [ 66.896936][ T3593] ? __rwlock_init+0x140/0x140 [ 66.901787][ T3593] ? _raw_spin_lock_irqsave+0xac/0x120 [ 66.907386][ T3593] _raw_spin_lock_irqsave+0xdd/0x120 [ 66.913059][ T3593] ? _raw_spin_lock+0x40/0x40 [ 66.918529][ T3593] ? read_lock_is_recursive+0x10/0x10 [ 66.923951][ T3593] trie_delete_elem+0x90/0x690 [ 66.928842][ T3593] ? __cant_sleep+0x270/0x270 [ 66.933642][ T3593] bpf_prog_fdee3c9a1e8a2a6e+0x3d/0x41 [ 66.939302][ T3593] bpf_trace_run2+0x1fd/0x410 [ 66.944300][ T3593] ? bpf_trace_run2+0x110/0x410 [ 66.949477][ T3593] ? bpf_trace_run1+0x3d0/0x3d0 [ 66.954784][ T3593] ? __mutex_trylock_common+0x17e/0x2e0 [ 66.960557][ T3593] ? __might_sleep+0xb0/0xb0 [ 66.965267][ T3593] ? __bpf_trace_contention_begin+0x10/0x10 [ 66.971535][ T3593] __traceiter_contention_end+0x74/0xa0 [ 66.977430][ T3593] trace_contention_end+0x12f/0x170 [ 66.983016][ T3593] __mutex_lock+0x2ed/0xd80 [ 66.987903][ T3593] ? futex_exit_release+0x30/0x1e0 [ 66.994799][ T3593] ? mutex_lock_nested+0x10/0x10 [ 67.000362][ T3593] ? print_irqtrace_events+0x210/0x210 [ 67.005943][ T3593] ? do_raw_spin_unlock+0x137/0x8a0 [ 67.012229][ T3593] futex_exit_release+0x30/0x1e0 [ 67.017679][ T3593] exit_mm_release+0x16/0x30 [ 67.023601][ T3593] exit_mm+0xa9/0x300 [ 67.028684][ T3593] ? do_exit+0x26a0/0x26a0 [ 67.034005][ T3593] ? taskstats_exit+0x399/0x920 [ 67.039078][ T3593] ? tty_audit_exit+0x150/0x1f0 [ 67.045207][ T3593] do_exit+0x9f6/0x26a0 [ 67.050123][ T3593] ? put_task_struct+0x80/0x80 [ 67.056509][ T3593] ? get_signal+0x137e/0x17d0 [ 67.062459][ T3593] ? lockdep_hardirqs_on_prepare+0x438/0x7a0 [ 67.070203][ T3593] ? print_irqtrace_events+0x210/0x210 [ 67.076575][ T3593] ? _raw_spin_lock_irq+0xdb/0x110 [ 67.083144][ T3593] do_group_exit+0x202/0x2b0 [ 67.089084][ T3593] ? _raw_spin_unlock_irq+0x1f/0x40 [ 67.094853][ T3593] ? lockdep_hardirqs_on+0x94/0x130 [ 67.100340][ T3593] get_signal+0x16f7/0x17d0 [ 67.107055][ T3593] ? ptrace_notify+0x370/0x370 [ 67.112815][ T3593] ? futex_wake+0x4ea/0x590 [ 67.117618][ T3593] arch_do_signal_or_restart+0xb0/0x1a10 [ 67.124252][ T3593] ? do_futex+0x3b5/0x490 [ 67.130611][ T3593] ? get_sigframe_size+0x10/0x10 [ 67.135766][ T3593] ? xfd_validate_state+0x6a/0x140 [ 67.141404][ T3593] ? lockdep_hardirqs_on_prepare+0x438/0x7a0 [ 67.148059][ T3593] ? exit_to_user_mode_loop+0x39/0x100 [ 67.154015][ T3593] exit_to_user_mode_loop+0x6a/0x100 [ 67.159671][ T3593] exit_to_user_mode_prepare+0xb1/0x140 [ 67.166342][ T3593] syscall_exit_to_user_mode+0x60/0x270 [ 67.171986][ T3593] do_syscall_64+0x47/0xb0 [ 67.176411][ T3593] ? clear_bhb_loop+0x45/0xa0 [ 67.181740][ T3593] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 67.189407][ T3593] RIP: 0033:0x7f8ec82f0919 [ 67.193849][ T3593] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 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 [ 67.216798][ T3593] RSP: 002b:00007f8ec82b1228 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 67.227038][ T3593] RAX: fffffffffffffe00 RBX: 00007f8ec837a328 RCX: 00007f8ec82f0919 [ 67.236574][ T3593] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f8ec837a328 [ 67.245411][ T3593] RBP: 00007f8ec837a320 R08: 00007f8ec82b16c0 R09: 00007f8ec82b16c0 [ 67.253754][ T3593] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8ec8347074 [ 67.262111][ T3593] R13: 00646e655f6e6f69 R14: 69746e65746e6f63 R15: 00007ffc25452d18 executing program executing program executing program executing program [ 67.270387][ T3593] executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program