Warning: Permanently added '10.128.1.29' (ED25519) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program [ 65.730731][ T3552] [ 65.733101][ T3552] ============================================ [ 65.739242][ T3552] WARNING: possible recursive locking detected [ 65.745391][ T3552] 6.1.87-syzkaller #0 Not tainted [ 65.750422][ T3552] -------------------------------------------- [ 65.756573][ T3552] syz-executor310/3552 is trying to acquire lock: [ 65.762993][ T3552] ffff88801eb53168 (&htab->buckets[i].lock){+...}-{2:2}, at: sock_hash_delete_elem+0x177/0x400 [ 65.773374][ T3552] [ 65.773374][ T3552] but task is already holding lock: [ 65.780739][ T3552] ffff88801eb53068 (&htab->buckets[i].lock){+...}-{2:2}, at: sock_hash_delete_elem+0x177/0x400 [ 65.791113][ T3552] [ 65.791113][ T3552] other info that might help us debug this: [ 65.799183][ T3552] Possible unsafe locking scenario: [ 65.799183][ T3552] [ 65.806643][ T3552] CPU0 [ 65.809924][ T3552] ---- [ 65.813199][ T3552] lock(&htab->buckets[i].lock); [ 65.818226][ T3552] lock(&htab->buckets[i].lock); [ 65.823259][ T3552] [ 65.823259][ T3552] *** DEADLOCK *** [ 65.823259][ T3552] [ 65.831396][ T3552] May be due to missing lock nesting notation [ 65.831396][ T3552] [ 65.839754][ T3552] 4 locks held by syz-executor310/3552: [ 65.845301][ T3552] #0: ffffffff8d12ac80 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x110/0x410 [ 65.854717][ T3552] #1: ffff88801eb53068 (&htab->buckets[i].lock){+...}-{2:2}, at: sock_hash_delete_elem+0x177/0x400 [ 65.865525][ T3552] #2: ffff8880162b0290 (&psock->link_lock){+...}-{2:2}, at: sock_map_unref+0xcc/0x5d0 [ 65.875203][ T3552] #3: ffffffff8d12ac80 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x110/0x410 [ 65.884620][ T3552] [ 65.884620][ T3552] stack backtrace: [ 65.890511][ T3552] CPU: 0 PID: 3552 Comm: syz-executor310 Not tainted 6.1.87-syzkaller #0 [ 65.898926][ T3552] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 65.908982][ T3552] Call Trace: [ 65.912260][ T3552] [ 65.915229][ T3552] dump_stack_lvl+0x1e3/0x2cb [ 65.919957][ T3552] ? nf_tcp_handle_invalid+0x642/0x642 [ 65.925440][ T3552] ? panic+0x764/0x764 [ 65.929521][ T3552] validate_chain+0x4711/0x5950 [ 65.934394][ T3552] ? reacquire_held_locks+0x660/0x660 [ 65.939783][ T3552] ? validate_chain+0x112/0x5950 [ 65.944739][ T3552] ? reacquire_held_locks+0x660/0x660 [ 65.950124][ T3552] ? __lock_acquire+0x125b/0x1f80 [ 65.955166][ T3552] ? validate_chain+0x112/0x5950 [ 65.960118][ T3552] ? reacquire_held_locks+0x660/0x660 [ 65.965505][ T3552] ? mark_lock+0x9a/0x340 [ 65.969858][ T3552] __lock_acquire+0x125b/0x1f80 [ 65.974729][ T3552] lock_acquire+0x1f8/0x5a0 [ 65.979266][ T3552] ? sock_hash_delete_elem+0x177/0x400 [ 65.984745][ T3552] ? read_lock_is_recursive+0x10/0x10 [ 65.990138][ T3552] ? sock_hash_delete_elem+0x177/0x400 [ 65.995608][ T3552] ? __bpf_trace_softirq+0x10/0x10 [ 66.000733][ T3552] ? sock_hash_delete_elem+0x177/0x400 [ 66.006206][ T3552] _raw_spin_lock_bh+0x31/0x40 [ 66.010979][ T3552] ? sock_hash_delete_elem+0x177/0x400 [ 66.016449][ T3552] sock_hash_delete_elem+0x177/0x400 [ 66.021748][ T3552] ? sock_hash_lookup+0x660/0x660 [ 66.026796][ T3552] bpf_prog_2c29ac5cdc6b1842+0x3a/0x3e [ 66.032260][ T3552] bpf_trace_run2+0x1fd/0x410 [ 66.036944][ T3552] ? bpf_trace_run2+0x110/0x410 [ 66.041801][ T3552] ? bpf_trace_run1+0x3d0/0x3d0 [ 66.046690][ T3552] ? do_raw_spin_lock+0x14a/0x370 [ 66.051721][ T3552] ? sock_map_unref+0x3ac/0x5d0 [ 66.056584][ T3552] ? __bpf_trace_softirq+0x10/0x10 [ 66.061707][ T3552] ? sock_map_unref+0x3ac/0x5d0 [ 66.066574][ T3552] __bpf_trace_kfree+0x6e/0x90 [ 66.071342][ T3552] ? sock_map_unref+0x3ac/0x5d0 [ 66.076204][ T3552] __traceiter_kfree+0x26/0x40 [ 66.080969][ T3552] ? sock_map_unref+0x3ac/0x5d0 [ 66.085831][ T3552] kfree+0xf6/0x190 [ 66.089647][ T3552] sock_map_unref+0x3ac/0x5d0 [ 66.094344][ T3552] sock_hash_delete_elem+0x388/0x400 [ 66.099661][ T3552] ? wake_up_q+0x9f/0xd0 [ 66.103910][ T3552] ? sock_hash_lookup+0x660/0x660 [ 66.109003][ T3552] ? mutex_unlock+0x10/0x10 [ 66.113583][ T3552] bpf_prog_2c29ac5cdc6b1842+0x3a/0x3e [ 66.119044][ T3552] bpf_trace_run2+0x1fd/0x410 [ 66.123732][ T3552] ? bpf_trace_run2+0x110/0x410 [ 66.128588][ T3552] ? bpf_trace_run1+0x3d0/0x3d0 [ 66.133443][ T3552] ? bpf_link_release+0x37/0x40 [ 66.138304][ T3552] ? bpf_prog_put+0xe4/0x2a0 [ 66.142905][ T3552] ? bpf_prog_free_id+0x190/0x190 [ 66.147938][ T3552] ? bpf_link_release+0x37/0x40 [ 66.152805][ T3552] __bpf_trace_kfree+0x6e/0x90 [ 66.157590][ T3552] ? bpf_link_release+0x37/0x40 [ 66.162454][ T3552] __traceiter_kfree+0x26/0x40 [ 66.167223][ T3552] ? bpf_link_release+0x37/0x40 [ 66.172087][ T3552] kfree+0xf6/0x190 [ 66.175897][ T3552] bpf_link_release+0x37/0x40 [ 66.180587][ T3552] ? idr_preload_end+0x1f0/0x1f0 [ 66.185531][ T3552] __fput+0x3b7/0x890 [ 66.189526][ T3552] task_work_run+0x246/0x300 [ 66.194145][ T3552] ? task_work_cancel+0x2b0/0x2b0 [ 66.199182][ T3552] ? exit_task_namespaces+0xdd/0xf0 [ 66.204387][ T3552] do_exit+0xa73/0x26a0 [ 66.208558][ T3552] ? put_task_struct+0x80/0x80 [ 66.213333][ T3552] ? lockdep_hardirqs_on_prepare+0x438/0x7a0 [ 66.219326][ T3552] ? print_irqtrace_events+0x210/0x210 [ 66.224799][ T3552] ? _raw_spin_unlock_irq+0x1f/0x40 [ 66.230002][ T3552] ? lockdep_hardirqs_on+0x94/0x130 [ 66.235203][ T3552] do_group_exit+0x202/0x2b0 [ 66.239807][ T3552] __x64_sys_exit_group+0x3b/0x40 [ 66.244843][ T3552] do_syscall_64+0x3b/0xb0 [ 66.249270][ T3552] ? clear_bhb_loop+0x45/0xa0 [ 66.253956][ T3552] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 66.259864][ T3552] RIP: 0033:0x7f3fc777b179 [ 66.264283][ T3552] Code: Unable to access opcode bytes at 0x7f3fc777b14f. [ 66.271296][ T3552] RSP: 002b:00007ffe9d3c15d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 executing program executing program executing program executing program executing program executing program executing program [ 66.279712][ T3552] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3fc777b179 [ 66.287690][ T3552] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 66.295665][ T3552] RBP: 00007f3fc77f62b0 R08: ffffffffffffffb8 R09: 00000000000000a0 [ 66.303639][ T3552] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3fc77f62b0 [ 66.311627][ T3552] R13: 0000000000000000 R14: 00007f3fc77f6d20 R15: 00007f3fc774c300 [ 66.320306][ T3552] executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program