Warning: Permanently added '10.128.0.143' (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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 67.180855][ T3546] [ 67.183234][ T3546] ============================================ [ 67.189946][ T3546] WARNING: possible recursive locking detected [ 67.196110][ T3546] 6.1.86-syzkaller #0 Not tainted [ 67.201122][ T3546] -------------------------------------------- [ 67.207269][ T3546] syz-executor367/3546 is trying to acquire lock: [ 67.213763][ T3546] ffff88801e7c6820 (&htab->buckets[i].lock){+...}-{2:2}, at: sock_hash_delete_elem+0x177/0x400 [ 67.224194][ T3546] [ 67.224194][ T3546] but task is already holding lock: [ 67.231653][ T3546] ffff88801e7c5820 (&htab->buckets[i].lock){+...}-{2:2}, at: sock_hash_delete_elem+0x177/0x400 [ 67.242011][ T3546] [ 67.242011][ T3546] other info that might help us debug this: [ 67.250060][ T3546] Possible unsafe locking scenario: [ 67.250060][ T3546] [ 67.257500][ T3546] CPU0 [ 67.260773][ T3546] ---- [ 67.264050][ T3546] lock(&htab->buckets[i].lock); [ 67.269073][ T3546] lock(&htab->buckets[i].lock); [ 67.274105][ T3546] [ 67.274105][ T3546] *** DEADLOCK *** [ 67.274105][ T3546] [ 67.282326][ T3546] May be due to missing lock nesting notation [ 67.282326][ T3546] [ 67.290640][ T3546] 7 locks held by syz-executor367/3546: [ 67.296194][ T3546] #0: ffffffff8d1c5590 (dup_mmap_sem){.+.+}-{0:0}, at: copy_mm+0x3cb/0x1990 [ 67.304994][ T3546] #1: ffff8880187017d8 (&mm->mmap_lock){++++}-{3:3}, at: copy_mm+0x3e5/0x1990 [ 67.313955][ T3546] #2: ffff888073f7d3d8 (&mm->mmap_lock/1){+.+.}-{3:3}, at: copy_mm+0x4ca/0x1990 [ 67.323106][ T3546] #3: ffff888018701be8 (&mm->context.lock){+.+.}-{3:3}, at: ldt_dup_context+0x3b/0x2e0 [ 67.332867][ T3546] #4: ffffffff8d12ac40 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x110/0x410 [ 67.342263][ T3546] #5: ffff88801e7c5820 (&htab->buckets[i].lock){+...}-{2:2}, at: sock_hash_delete_elem+0x177/0x400 [ 67.353335][ T3546] #6: ffffffff8d12ac40 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x110/0x410 [ 67.362733][ T3546] [ 67.362733][ T3546] stack backtrace: [ 67.368726][ T3546] CPU: 0 PID: 3546 Comm: syz-executor367 Not tainted 6.1.86-syzkaller #0 [ 67.377236][ T3546] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 67.387297][ T3546] Call Trace: [ 67.390596][ T3546] [ 67.393524][ T3546] dump_stack_lvl+0x1e3/0x2cb [ 67.398221][ T3546] ? nf_tcp_handle_invalid+0x642/0x642 [ 67.405649][ T3546] ? panic+0x764/0x764 [ 67.409722][ T3546] validate_chain+0x4711/0x5950 [ 67.414619][ T3546] ? reacquire_held_locks+0x660/0x660 [ 67.420800][ T3546] ? mab_mas_cp+0x450/0x890 [ 67.425404][ T3546] ? mas_leaf_max_gap+0x485/0x620 [ 67.430441][ T3546] ? reacquire_held_locks+0x660/0x660 [ 67.435841][ T3546] ? mark_lock+0x9a/0x340 [ 67.440227][ T3546] __lock_acquire+0x125b/0x1f80 [ 67.445110][ T3546] lock_acquire+0x1f8/0x5a0 [ 67.449638][ T3546] ? sock_hash_delete_elem+0x177/0x400 [ 67.455113][ T3546] ? read_lock_is_recursive+0x10/0x10 [ 67.460508][ T3546] ? sock_hash_delete_elem+0x177/0x400 [ 67.465972][ T3546] ? __bpf_trace_softirq+0x10/0x10 [ 67.471099][ T3546] ? sock_hash_delete_elem+0x177/0x400 [ 67.476575][ T3546] _raw_spin_lock_bh+0x31/0x40 [ 67.481345][ T3546] ? sock_hash_delete_elem+0x177/0x400 [ 67.486807][ T3546] sock_hash_delete_elem+0x177/0x400 [ 67.492107][ T3546] ? reacquire_held_locks+0x660/0x660 [ 67.497494][ T3546] ? sock_hash_lookup+0x660/0x660 [ 67.502536][ T3546] bpf_prog_05fc780d7a5f93f9+0x42/0x46 [ 67.507993][ T3546] bpf_trace_run2+0x1fd/0x410 [ 67.512672][ T3546] ? bpf_trace_run2+0x110/0x410 [ 67.517517][ T3546] ? bpf_trace_run1+0x3d0/0x3d0 [ 67.522364][ T3546] ? validate_chain+0x112/0x5950 [ 67.527471][ T3546] ? mark_lock+0x9a/0x340 [ 67.531832][ T3546] ? __bpf_trace_contention_begin+0x10/0x10 [ 67.537754][ T3546] __traceiter_contention_end+0x74/0xa0 [ 67.543313][ T3546] trace_contention_end+0x14c/0x190 [ 67.548513][ T3546] __pv_queued_spin_lock_slowpath+0x935/0xc50 [ 67.554589][ T3546] ? __pv_queued_spin_unlock_slowpath+0x2e0/0x2e0 [ 67.561029][ T3546] queued_spin_lock_slowpath+0x42/0x50 [ 67.566491][ T3546] do_raw_spin_lock+0x269/0x370 [ 67.575941][ T3546] ? __bpf_trace_softirq+0x10/0x10 [ 67.581062][ T3546] ? __rwlock_init+0x140/0x140 [ 67.585919][ T3546] ? sock_hash_delete_elem+0x177/0x400 [ 67.591386][ T3546] sock_hash_delete_elem+0x177/0x400 [ 67.596678][ T3546] ? sock_hash_lookup+0x660/0x660 [ 67.601713][ T3546] bpf_prog_05fc780d7a5f93f9+0x42/0x46 [ 67.607168][ T3546] bpf_trace_run2+0x1fd/0x410 [ 67.611853][ T3546] ? bpf_trace_run2+0x110/0x410 [ 67.616701][ T3546] ? bpf_trace_run1+0x3d0/0x3d0 [ 67.621557][ T3546] ? __mutex_trylock_common+0x17e/0x2e0 [ 67.627117][ T3546] ? __might_sleep+0xb0/0xb0 [ 67.631734][ T3546] ? __bpf_trace_contention_begin+0x10/0x10 [ 67.637653][ T3546] __traceiter_contention_end+0x74/0xa0 [ 67.643211][ T3546] trace_contention_end+0x12f/0x170 [ 67.648438][ T3546] __mutex_lock+0x2ed/0xd80 [ 67.652981][ T3546] ? mas_next_node+0x3c7/0x950 [ 67.662187][ T3546] ? ldt_dup_context+0x3b/0x2e0 [ 67.667044][ T3546] ? mutex_lock_nested+0x10/0x10 [ 67.672005][ T3546] ? mas_next_entry+0xf02/0xfb0 [ 67.676859][ T3546] ldt_dup_context+0x3b/0x2e0 [ 67.681548][ T3546] copy_mm+0x10ba/0x1990 [ 67.685880][ T3546] ? copy_signal+0x670/0x670 [ 67.690465][ T3546] ? lockdep_init_map_type+0x9d/0x900 [ 67.695846][ T3546] ? __init_rwsem+0x11e/0x160 [ 67.700522][ T3546] ? copy_signal+0x548/0x670 [ 67.705109][ T3546] copy_process+0x19d5/0x4060 [ 67.709790][ T3546] ? copy_process+0x9e1/0x4060 [ 67.714556][ T3546] ? __lock_acquire+0x1f80/0x1f80 [ 67.719597][ T3546] ? idle_dummy+0x10/0x10 [ 67.723933][ T3546] ? __might_fault+0xa1/0x110 [ 67.729251][ T3546] kernel_clone+0x222/0x920 [ 67.733791][ T3546] ? create_io_thread+0x180/0x180 [ 67.739619][ T3546] ? kernel_waitid+0x520/0x520 [ 67.744525][ T3546] __x64_sys_clone+0x231/0x280 [ 67.749305][ T3546] ? __do_sys_vfork+0x110/0x110 [ 67.754155][ T3546] ? lockdep_hardirqs_on_prepare+0x438/0x7a0 [ 67.760318][ T3546] ? syscall_enter_from_user_mode+0x2e/0x230 [ 67.766301][ T3546] ? lockdep_hardirqs_on+0x94/0x130 [ 67.771525][ T3546] ? syscall_enter_from_user_mode+0x2e/0x230 [ 67.777603][ T3546] do_syscall_64+0x3b/0xb0 [ 67.782130][ T3546] ? clear_bhb_loop+0x45/0xa0 [ 67.786835][ T3546] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 67.792733][ T3546] RIP: 0033:0x7fc727348ef3 [ 67.797152][ T3546] Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00 [ 67.816762][ T3546] RSP: 002b:00007ffc3ed211f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 67.825207][ T3546] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc727348ef3 executing program executing program executing program executing program executing program executing program [ 67.833221][ T3546] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 [ 67.841207][ T3546] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000010 [ 67.849196][ T3546] R10: 0000555555fcf650 R11: 0000000000000246 R12: 0000000000000001 [ 67.857452][ T3546] R13: 00007ffc3ed2130c R14: 00007ffc3ed21320 R15: 00007ffc3ed21310 [ 67.865461][ T3546] executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program