Warning: Permanently added '10.128.0.226' (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 syzkaller login: [ 50.960968][ T3571] [ 50.963329][ T3571] ============================================ [ 50.969465][ T3571] WARNING: possible recursive locking detected [ 50.975711][ T3571] 6.1.87-syzkaller #0 Not tainted [ 50.980861][ T3571] -------------------------------------------- [ 50.987058][ T3571] syz-executor576/3571 is trying to acquire lock: [ 50.993475][ T3571] ffff88807d05e218 (&qs->lock){-.-.}-{2:2}, at: queue_stack_map_push_elem+0x1ac/0x650 [ 51.003063][ T3571] [ 51.003063][ T3571] but task is already holding lock: [ 51.010420][ T3571] ffff88807d05c218 (&qs->lock){-.-.}-{2:2}, at: queue_stack_map_push_elem+0x1ac/0x650 [ 51.020246][ T3571] [ 51.020246][ T3571] other info that might help us debug this: [ 51.028407][ T3571] Possible unsafe locking scenario: [ 51.028407][ T3571] [ 51.035850][ T3571] CPU0 [ 51.039502][ T3571] ---- [ 51.042797][ T3571] lock(&qs->lock); [ 51.046701][ T3571] lock(&qs->lock); [ 51.050685][ T3571] [ 51.050685][ T3571] *** DEADLOCK *** [ 51.050685][ T3571] [ 51.058989][ T3571] May be due to missing lock nesting notation [ 51.058989][ T3571] [ 51.067313][ T3571] 4 locks held by syz-executor576/3571: [ 51.072916][ T3571] #0: ffff88807c4ccf78 (&tsk->futex_exit_mutex){+.+.}-{3:3}, at: futex_exit_release+0x30/0x1e0 [ 51.083356][ T3571] #1: ffffffff8d12ac80 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x110/0x410 [ 51.092834][ T3571] #2: ffff88807d05c218 (&qs->lock){-.-.}-{2:2}, at: queue_stack_map_push_elem+0x1ac/0x650 [ 51.102844][ T3571] #3: ffffffff8d12ac80 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x110/0x410 [ 51.112315][ T3571] [ 51.112315][ T3571] stack backtrace: [ 51.118184][ T3571] CPU: 1 PID: 3571 Comm: syz-executor576 Not tainted 6.1.87-syzkaller #0 [ 51.126590][ T3571] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 51.136820][ T3571] Call Trace: [ 51.140084][ T3571] [ 51.143015][ T3571] dump_stack_lvl+0x1e3/0x2cb [ 51.147750][ T3571] ? nf_tcp_handle_invalid+0x642/0x642 [ 51.153222][ T3571] ? panic+0x764/0x764 [ 51.157291][ T3571] validate_chain+0x4711/0x5950 [ 51.162133][ T3571] ? reacquire_held_locks+0x660/0x660 [ 51.167602][ T3571] ? __lock_acquire+0x125b/0x1f80 [ 51.172664][ T3571] ? reacquire_held_locks+0x660/0x660 [ 51.178443][ T3571] ? mark_lock+0x9a/0x340 [ 51.182867][ T3571] ? mark_lock+0x9a/0x340 [ 51.187343][ T3571] ? mark_lock+0x9a/0x340 [ 51.191763][ T3571] __lock_acquire+0x125b/0x1f80 [ 51.196606][ T3571] lock_acquire+0x1f8/0x5a0 [ 51.201300][ T3571] ? queue_stack_map_push_elem+0x1ac/0x650 [ 51.207100][ T3571] ? is_bpf_text_address+0x22/0x2a0 [ 51.212456][ T3571] ? read_lock_is_recursive+0x10/0x10 [ 51.217898][ T3571] ? unwind_next_frame+0x1a3f/0x2220 [ 51.223175][ T3571] ? deref_stack_reg+0x17c/0x210 [ 51.228110][ T3571] ? mark_lock+0x9a/0x340 [ 51.232432][ T3571] ? __lock_acquire+0x125b/0x1f80 [ 51.237446][ T3571] _raw_spin_lock_irqsave+0xd1/0x120 [ 51.242716][ T3571] ? queue_stack_map_push_elem+0x1ac/0x650 [ 51.248505][ T3571] ? _raw_spin_lock+0x40/0x40 [ 51.253342][ T3571] queue_stack_map_push_elem+0x1ac/0x650 [ 51.259045][ T3571] ? queue_stack_map_delete_elem+0x10/0x10 [ 51.264849][ T3571] ? __cant_sleep+0x270/0x270 [ 51.269625][ T3571] bpf_prog_80daba7f9ca62790+0x3a/0x3e [ 51.275112][ T3571] bpf_trace_run2+0x1fd/0x410 [ 51.279992][ T3571] ? bpf_trace_run2+0x110/0x410 [ 51.284956][ T3571] ? bpf_trace_run1+0x3d0/0x3d0 [ 51.289818][ T3571] ? __bpf_trace_contention_begin+0x10/0x10 [ 51.295749][ T3571] __traceiter_contention_end+0x74/0xa0 [ 51.301332][ T3571] trace_contention_end+0x14c/0x190 [ 51.306541][ T3571] __pv_queued_spin_lock_slowpath+0x935/0xc50 [ 51.312633][ T3571] ? __pv_queued_spin_unlock_slowpath+0x2e0/0x2e0 [ 51.319059][ T3571] queued_spin_lock_slowpath+0x42/0x50 [ 51.324504][ T3571] do_raw_spin_lock+0x269/0x370 [ 51.329687][ T3571] ? __rwlock_init+0x140/0x140 [ 51.334431][ T3571] ? _raw_spin_lock_irqsave+0xac/0x120 [ 51.339872][ T3571] _raw_spin_lock_irqsave+0xdd/0x120 [ 51.345149][ T3571] ? _raw_spin_lock+0x40/0x40 [ 51.349810][ T3571] queue_stack_map_push_elem+0x1ac/0x650 [ 51.355425][ T3571] ? queue_stack_map_delete_elem+0x10/0x10 [ 51.361226][ T3571] ? __cant_sleep+0x270/0x270 [ 51.365900][ T3571] bpf_prog_80daba7f9ca62790+0x3a/0x3e [ 51.371369][ T3571] bpf_trace_run2+0x1fd/0x410 [ 51.376057][ T3571] ? bpf_trace_run2+0x110/0x410 [ 51.381531][ T3571] ? bpf_trace_run1+0x3d0/0x3d0 [ 51.386462][ T3571] ? __mutex_trylock_common+0x17e/0x2e0 [ 51.391995][ T3571] ? __might_sleep+0xb0/0xb0 [ 51.396654][ T3571] ? __bpf_trace_contention_begin+0x10/0x10 [ 51.402552][ T3571] __traceiter_contention_end+0x74/0xa0 [ 51.408173][ T3571] trace_contention_end+0x12f/0x170 [ 51.413356][ T3571] __mutex_lock+0x2ed/0xd80 [ 51.417842][ T3571] ? acct_collect+0x63e/0x7f0 [ 51.422508][ T3571] ? lockdep_hardirqs_on_prepare+0x438/0x7a0 [ 51.428473][ T3571] ? futex_exit_release+0x30/0x1e0 [ 51.433561][ T3571] ? print_irqtrace_events+0x210/0x210 [ 51.439016][ T3571] ? mutex_lock_nested+0x10/0x10 [ 51.443948][ T3571] ? _raw_spin_unlock_irq+0x1f/0x40 [ 51.449133][ T3571] ? lockdep_hardirqs_on+0x94/0x130 [ 51.454318][ T3571] ? _raw_spin_unlock_irq+0x2a/0x40 [ 51.459515][ T3571] ? acct_collect+0x63e/0x7f0 [ 51.464175][ T3571] futex_exit_release+0x30/0x1e0 [ 51.469110][ T3571] exit_mm_release+0x16/0x30 [ 51.473790][ T3571] exit_mm+0xa9/0x300 [ 51.477767][ T3571] ? do_exit+0x26a0/0x26a0 [ 51.482191][ T3571] ? taskstats_exit+0x399/0x920 [ 51.487037][ T3571] ? tty_audit_exit+0x150/0x1f0 [ 51.491888][ T3571] do_exit+0x9f6/0x26a0 [ 51.496032][ T3571] ? put_task_struct+0x80/0x80 [ 51.500806][ T3571] ? lockdep_hardirqs_on_prepare+0x438/0x7a0 [ 51.506770][ T3571] ? print_irqtrace_events+0x210/0x210 [ 51.512237][ T3571] ? _raw_spin_unlock_irq+0x1f/0x40 [ 51.517525][ T3571] ? lockdep_hardirqs_on+0x94/0x130 [ 51.522743][ T3571] do_group_exit+0x202/0x2b0 [ 51.527351][ T3571] __x64_sys_exit_group+0x3b/0x40 [ 51.532441][ T3571] do_syscall_64+0x3b/0xb0 [ 51.536880][ T3571] ? clear_bhb_loop+0x45/0xa0 [ 51.541573][ T3571] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 51.547461][ T3571] RIP: 0033:0x7f7662faaf79 [ 51.551889][ T3571] 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 [ 51.571623][ T3571] RSP: 002b:00007fffd487b748 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 51.580064][ T3571] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7662faaf79 [ 51.588053][ T3571] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 51.597252][ T3571] RBP: 00007f76630262b0 R08: ffffffffffffffb8 R09: 00000000000000a0 [ 51.605350][ T3571] R10: 00000000000000a0 R11: 0000000000000246 R12: 00007f76630262b0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 51.613330][ T3571] R13: 0000000000000000 R14: 00007f7663026d20 R15: 00007f7662f7c120 [ 51.621312][ T3571] executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program