Warning: Permanently added '10.128.0.174' (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 syzkaller login: [ 89.822214][ T4266] [ 89.824800][ T4266] ============================================ [ 89.831855][ T4266] WARNING: possible recursive locking detected [ 89.838545][ T4266] 6.1.141-syzkaller #0 Not tainted [ 89.844066][ T4266] -------------------------------------------- [ 89.851103][ T4266] syz-executor174/4266 is trying to acquire lock: [ 89.858149][ T4266] ffff88807aa2b238 (&trie->lock){..-.}-{2:2}, at: trie_delete_elem+0x90/0x690 [ 89.867815][ T4266] [ 89.867815][ T4266] but task is already holding lock: [ 89.876160][ T4266] ffff88807aa2aa38 (&trie->lock){..-.}-{2:2}, at: trie_delete_elem+0x90/0x690 [ 89.886288][ T4266] [ 89.886288][ T4266] other info that might help us debug this: [ 89.895226][ T4266] Possible unsafe locking scenario: [ 89.895226][ T4266] [ 89.903349][ T4266] CPU0 [ 89.906972][ T4266] ---- [ 89.910921][ T4266] lock(&trie->lock); [ 89.915829][ T4266] lock(&trie->lock); [ 89.920366][ T4266] [ 89.920366][ T4266] *** DEADLOCK *** [ 89.920366][ T4266] [ 89.929650][ T4266] May be due to missing lock nesting notation [ 89.929650][ T4266] [ 89.939226][ T4266] 4 locks held by syz-executor174/4266: [ 89.945184][ T4266] #0: ffff88802fe693f8 (&tsk->futex_exit_mutex){+.+.}-{3:3}, at: futex_exit_release+0x2f/0x1c0 [ 89.957496][ T4266] #1: ffffffff8c92aaa0 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0xda/0x3b0 [ 89.968464][ T4266] #2: ffff88807aa2aa38 (&trie->lock){..-.}-{2:2}, at: trie_delete_elem+0x90/0x690 [ 89.979258][ T4266] #3: ffffffff8c92aaa0 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0xda/0x3b0 [ 89.989052][ T4266] [ 89.989052][ T4266] stack backtrace: [ 89.995150][ T4266] CPU: 1 PID: 4266 Comm: syz-executor174 Not tainted 6.1.141-syzkaller #0 [ 90.004927][ T4266] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 90.016089][ T4266] Call Trace: [ 90.019603][ T4266] [ 90.022917][ T4266] dump_stack_lvl+0x168/0x22e [ 90.027957][ T4266] ? show_regs_print_info+0x12/0x12 [ 90.034021][ T4266] ? load_image+0x3b0/0x3b0 [ 90.039299][ T4266] __lock_acquire+0x122f/0x7c50 [ 90.045241][ T4266] ? mark_lock+0x94/0x320 [ 90.049978][ T4266] ? verify_lock_unused+0x140/0x140 [ 90.055918][ T4266] ? __lock_acquire+0x12e5/0x7c50 [ 90.061760][ T4266] ? verify_lock_unused+0x140/0x140 [ 90.068354][ T4266] ? __bitmap_and+0x30c/0x330 [ 90.073454][ T4266] ? _find_next_and_bit+0x176/0x180 [ 90.079854][ T4266] lock_acquire+0x1b4/0x490 [ 90.085434][ T4266] ? trie_delete_elem+0x90/0x690 [ 90.091304][ T4266] ? mark_lock+0x94/0x320 [ 90.096116][ T4266] ? mark_lock+0x94/0x320 [ 90.101136][ T4266] ? read_lock_is_recursive+0x10/0x10 [ 90.107394][ T4266] ? __lock_acquire+0x12e5/0x7c50 [ 90.113211][ T4266] ? unwind_next_frame+0x1880/0x20b0 [ 90.119241][ T4266] _raw_spin_lock_irqsave+0xa4/0xf0 [ 90.125714][ T4266] ? trie_delete_elem+0x90/0x690 [ 90.131564][ T4266] ? _raw_spin_lock+0x40/0x40 [ 90.136779][ T4266] trie_delete_elem+0x90/0x690 [ 90.142912][ T4266] ? __cant_sleep+0x210/0x210 [ 90.147889][ T4266] ? __lock_acquire+0x13c0/0x7c50 [ 90.153434][ T4266] bpf_prog_2c29ac5cdc6b1842+0x3a/0x3e [ 90.159318][ T4266] bpf_trace_run2+0x1cd/0x3b0 [ 90.164824][ T4266] ? bpf_trace_run2+0xda/0x3b0 [ 90.170187][ T4266] ? bpf_trace_run1+0x3b0/0x3b0 [ 90.175353][ T4266] ? mark_lock+0x94/0x320 [ 90.180081][ T4266] ? __bpf_trace_contention_begin+0x10/0x10 [ 90.187014][ T4266] __traceiter_contention_end+0x74/0xa0 [ 90.193157][ T4266] trace_contention_end+0x13f/0x190 [ 90.199112][ T4266] __pv_queued_spin_lock_slowpath+0x7e8/0x9c0 [ 90.205836][ T4266] ? __pv_queued_spin_unlock_slowpath+0x290/0x290 [ 90.212707][ T4266] queued_spin_lock_slowpath+0x43/0x50 [ 90.218834][ T4266] do_raw_spin_lock+0x217/0x280 [ 90.223729][ T4266] ? __rwlock_init+0x140/0x140 [ 90.228883][ T4266] _raw_spin_lock_irqsave+0xb0/0xf0 [ 90.234473][ T4266] ? _raw_spin_lock+0x40/0x40 [ 90.240159][ T4266] trie_delete_elem+0x90/0x690 [ 90.245141][ T4266] ? __cant_sleep+0x210/0x210 [ 90.250223][ T4266] ? mark_lock+0x94/0x320 [ 90.255055][ T4266] bpf_prog_2c29ac5cdc6b1842+0x3a/0x3e [ 90.260749][ T4266] bpf_trace_run2+0x1cd/0x3b0 [ 90.265699][ T4266] ? bpf_trace_run2+0xda/0x3b0 [ 90.270613][ T4266] ? bpf_trace_run1+0x3b0/0x3b0 [ 90.275931][ T4266] ? __mutex_trylock_common+0x14f/0x250 [ 90.282036][ T4266] ? __bpf_trace_contention_begin+0x10/0x10 [ 90.288889][ T4266] __traceiter_contention_end+0x74/0xa0 [ 90.295222][ T4266] trace_contention_end+0x123/0x170 [ 90.301156][ T4266] __mutex_lock+0x194/0xaf0 [ 90.306073][ T4266] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 90.312708][ T4266] ? futex_exit_release+0x2f/0x1c0 [ 90.319356][ T4266] ? lock_chain_count+0x20/0x20 [ 90.324511][ T4266] ? mutex_lock_nested+0x10/0x10 [ 90.330195][ T4266] ? _raw_spin_unlock_irq+0x1f/0x40 [ 90.336242][ T4266] ? lockdep_hardirqs_on+0x94/0x140 [ 90.342022][ T4266] ? _raw_spin_unlock_irq+0x2a/0x40 [ 90.347710][ T4266] ? acct_collect+0x588/0x730 [ 90.353754][ T4266] futex_exit_release+0x2f/0x1c0 [ 90.359699][ T4266] exit_mm_release+0x16/0x30 [ 90.364908][ T4266] exit_mm+0xa4/0x2c0 [ 90.369363][ T4266] ? do_exit+0x2400/0x2400 [ 90.374085][ T4266] ? taskstats_exit+0x35a/0x9d0 [ 90.379407][ T4266] do_exit+0x8b9/0x2400 [ 90.384140][ T4266] ? put_task_struct+0x80/0x80 [ 90.389487][ T4266] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 90.396577][ T4266] ? lock_chain_count+0x20/0x20 [ 90.403559][ T4266] ? _raw_spin_lock_irq+0xab/0xe0 [ 90.409795][ T4266] ? _raw_spin_lock_irqsave+0xf0/0xf0 [ 90.415926][ T4266] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 90.422632][ T4266] ? _raw_spin_unlock_irq+0x1f/0x40 [ 90.428852][ T4266] ? lockdep_hardirqs_on+0x94/0x140 [ 90.435072][ T4266] do_group_exit+0x217/0x2d0 [ 90.440552][ T4266] __x64_sys_exit_group+0x3b/0x40 [ 90.446256][ T4266] do_syscall_64+0x4c/0xa0 [ 90.451329][ T4266] ? clear_bhb_loop+0x60/0xb0 [ 90.456555][ T4266] ? clear_bhb_loop+0x60/0xb0 [ 90.461958][ T4266] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 90.468428][ T4266] RIP: 0033:0x7f7e72658079 [ 90.473613][ T4266] Code: 90 49 c7 c0 b8 ff ff ff be e7 00 00 00 ba 3c 00 00 00 eb 12 0f 1f 44 00 00 89 d0 0f 05 48 3d 00 f0 ff ff 77 1c f4 89 f0 0f 05 <48> 3d 00 f0 ff ff 76 e7 f7 d8 64 41 89 00 eb df 0f 1f 80 00 00 00 [ 90.495982][ T4266] RSP: 002b:00007ffe738aacc8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 90.505123][ T4266] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7e72658079 [ 90.514121][ T4266] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 executing program executing program executing program executing program executing program [ 90.523427][ T4266] RBP: 00007f7e726d32b0 R08: ffffffffffffffb8 R09: 00000000000000a0 [ 90.532503][ T4266] R10: 0000200000000108 R11: 0000000000000246 R12: 00007f7e726d32b0 [ 90.541857][ T4266] R13: 0000000000000000 R14: 00007f7e726d3d20 R15: 00007f7e72629220 [ 90.550974][ T4266] executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 97.540757][ T14] cfg80211: failed to load regulatory.db executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program