forked to background, child pid 3217 [ 39.809170][ T3218] 8021q: adding VLAN 0 to HW filter on device bond0 [ 39.835537][ T3218] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: [ 40.097579][ T3293] ssh-keygen (3293) used greatest stack depth: 20280 bytes left OK syzkaller Warning: Permanently added '10.128.1.145' (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 syzkaller login: [ 61.085438][ T3559] [ 61.087802][ T3559] ============================================ [ 61.093956][ T3559] WARNING: possible recursive locking detected [ 61.100097][ T3559] 6.1.90-syzkaller #0 Not tainted [ 61.105111][ T3559] -------------------------------------------- [ 61.111255][ T3559] syz-executor180/3559 is trying to acquire lock: [ 61.117656][ T3559] ffff88807b4ca218 (&qs->lock){-...}-{2:2}, at: __stack_map_get+0x147/0x4a0 [ 61.126384][ T3559] [ 61.126384][ T3559] but task is already holding lock: [ 61.133738][ T3559] ffff88807ad45218 (&qs->lock){-...}-{2:2}, at: __stack_map_get+0x147/0x4a0 [ 61.142429][ T3559] [ 61.142429][ T3559] other info that might help us debug this: [ 61.150559][ T3559] Possible unsafe locking scenario: [ 61.150559][ T3559] [ 61.158084][ T3559] CPU0 [ 61.161357][ T3559] ---- [ 61.164625][ T3559] lock(&qs->lock); [ 61.168516][ T3559] lock(&qs->lock); [ 61.172404][ T3559] [ 61.172404][ T3559] *** DEADLOCK *** [ 61.172404][ T3559] [ 61.180535][ T3559] May be due to missing lock nesting notation [ 61.180535][ T3559] [ 61.188856][ T3559] 4 locks held by syz-executor180/3559: [ 61.194388][ T3559] #0: ffff8880235b93f8 (&tsk->futex_exit_mutex){+.+.}-{3:3}, at: futex_exit_release+0x30/0x1e0 [ 61.204823][ T3559] #1: ffffffff8d12ac80 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x110/0x410 [ 61.214216][ T3559] #2: ffff88807ad45218 (&qs->lock){-...}-{2:2}, at: __stack_map_get+0x147/0x4a0 [ 61.223430][ T3559] #3: ffffffff8d12ac80 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x110/0x410 [ 61.232835][ T3559] [ 61.232835][ T3559] stack backtrace: [ 61.239147][ T3559] CPU: 0 PID: 3559 Comm: syz-executor180 Not tainted 6.1.90-syzkaller #0 [ 61.247554][ T3559] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 61.257602][ T3559] Call Trace: [ 61.260908][ T3559] [ 61.263853][ T3559] dump_stack_lvl+0x1e3/0x2cb [ 61.268542][ T3559] ? nf_tcp_handle_invalid+0x642/0x642 [ 61.274007][ T3559] ? panic+0x764/0x764 [ 61.278075][ T3559] validate_chain+0x4711/0x5950 [ 61.282932][ T3559] ? deref_stack_reg+0x17c/0x210 [ 61.287868][ T3559] ? rcu_is_watching+0x11/0xb0 [ 61.292626][ T3559] ? trace_sched_overutilized_tp+0x61/0x1a0 [ 61.298522][ T3559] ? reacquire_held_locks+0x660/0x660 [ 61.303894][ T3559] ? validate_chain+0x112/0x5950 [ 61.308839][ T3559] ? mark_lock+0x9a/0x340 [ 61.313169][ T3559] ? mark_lock+0x9a/0x340 [ 61.317502][ T3559] ? __lock_acquire+0x125b/0x1f80 [ 61.322529][ T3559] ? mark_lock+0x9a/0x340 [ 61.326862][ T3559] __lock_acquire+0x125b/0x1f80 [ 61.331724][ T3559] lock_acquire+0x1f8/0x5a0 [ 61.336239][ T3559] ? __stack_map_get+0x147/0x4a0 [ 61.341179][ T3559] ? read_lock_is_recursive+0x10/0x10 [ 61.346570][ T3559] ? preempt_count_add+0x8f/0x180 [ 61.351613][ T3559] ? mark_lock+0x9a/0x340 [ 61.355953][ T3559] ? __lock_acquire+0x125b/0x1f80 [ 61.361010][ T3559] _raw_spin_lock_irqsave+0xd1/0x120 [ 61.366294][ T3559] ? __stack_map_get+0x147/0x4a0 [ 61.371228][ T3559] ? _raw_spin_lock+0x40/0x40 [ 61.375908][ T3559] __stack_map_get+0x147/0x4a0 [ 61.380683][ T3559] ? read_lock_is_recursive+0x10/0x10 [ 61.386058][ T3559] ? __queue_map_get+0x4b0/0x4b0 [ 61.390991][ T3559] ? __cant_sleep+0x270/0x270 [ 61.395668][ T3559] bpf_prog_00798911c748094f+0x3a/0x3e [ 61.401123][ T3559] bpf_trace_run2+0x1fd/0x410 [ 61.405798][ T3559] ? bpf_trace_run2+0x110/0x410 [ 61.410642][ T3559] ? bpf_trace_run1+0x3d0/0x3d0 [ 61.415488][ T3559] ? __bpf_trace_contention_begin+0x10/0x10 [ 61.421379][ T3559] __traceiter_contention_end+0x74/0xa0 [ 61.426927][ T3559] trace_contention_end+0x14c/0x190 [ 61.432136][ T3559] __pv_queued_spin_lock_slowpath+0x935/0xc50 [ 61.438239][ T3559] ? __pv_queued_spin_unlock_slowpath+0x2e0/0x2e0 [ 61.444654][ T3559] ? reacquire_held_locks+0x660/0x660 [ 61.450032][ T3559] queued_spin_lock_slowpath+0x42/0x50 [ 61.455486][ T3559] do_raw_spin_lock+0x269/0x370 [ 61.460332][ T3559] ? mark_lock+0x9a/0x340 [ 61.464662][ T3559] ? __rwlock_init+0x140/0x140 [ 61.469432][ T3559] ? __lock_acquire+0x125b/0x1f80 [ 61.474477][ T3559] ? _raw_spin_lock_irqsave+0xac/0x120 [ 61.480385][ T3559] _raw_spin_lock_irqsave+0xdd/0x120 [ 61.485675][ T3559] ? _raw_spin_lock+0x40/0x40 [ 61.490377][ T3559] __stack_map_get+0x147/0x4a0 [ 61.495155][ T3559] ? read_lock_is_recursive+0x10/0x10 [ 61.500632][ T3559] ? __queue_map_get+0x4b0/0x4b0 [ 61.505565][ T3559] ? __cant_sleep+0x270/0x270 [ 61.510241][ T3559] bpf_prog_00798911c748094f+0x3a/0x3e [ 61.515695][ T3559] bpf_trace_run2+0x1fd/0x410 [ 61.520365][ T3559] ? bpf_trace_run2+0x110/0x410 [ 61.525209][ T3559] ? bpf_trace_run1+0x3d0/0x3d0 [ 61.530054][ T3559] ? __mutex_trylock_common+0x17e/0x2e0 [ 61.535596][ T3559] ? __might_sleep+0xb0/0xb0 [ 61.540178][ T3559] ? __bpf_trace_contention_begin+0x10/0x10 [ 61.546068][ T3559] __traceiter_contention_end+0x74/0xa0 [ 61.551630][ T3559] trace_contention_end+0x12f/0x170 [ 61.556826][ T3559] __mutex_lock+0x2ed/0xd80 [ 61.561323][ T3559] ? acct_collect+0x63e/0x7f0 [ 61.566000][ T3559] ? lockdep_hardirqs_on_prepare+0x438/0x7a0 [ 61.571988][ T3559] ? futex_exit_release+0x30/0x1e0 [ 61.577091][ T3559] ? print_irqtrace_events+0x210/0x210 [ 61.582549][ T3559] ? mutex_lock_nested+0x10/0x10 [ 61.587480][ T3559] ? _raw_spin_unlock_irq+0x1f/0x40 [ 61.592676][ T3559] ? lockdep_hardirqs_on+0x94/0x130 [ 61.597868][ T3559] ? _raw_spin_unlock_irq+0x2a/0x40 [ 61.603073][ T3559] ? acct_collect+0x63e/0x7f0 [ 61.607750][ T3559] futex_exit_release+0x30/0x1e0 [ 61.612683][ T3559] exit_mm_release+0x16/0x30 [ 61.617286][ T3559] exit_mm+0xa9/0x300 [ 61.621271][ T3559] ? do_exit+0x26a0/0x26a0 [ 61.625685][ T3559] ? taskstats_exit+0x399/0x920 [ 61.630550][ T3559] ? tty_audit_exit+0x150/0x1f0 [ 61.635412][ T3559] do_exit+0x9f6/0x26a0 [ 61.639591][ T3559] ? put_task_struct+0x80/0x80 [ 61.644366][ T3559] ? lockdep_hardirqs_on_prepare+0x438/0x7a0 [ 61.650345][ T3559] ? print_irqtrace_events+0x210/0x210 [ 61.655893][ T3559] ? _raw_spin_unlock_irq+0x1f/0x40 [ 61.661093][ T3559] ? lockdep_hardirqs_on+0x94/0x130 [ 61.666303][ T3559] do_group_exit+0x202/0x2b0 [ 61.670904][ T3559] __x64_sys_exit_group+0x3b/0x40 [ 61.675930][ T3559] do_syscall_64+0x3b/0xb0 [ 61.680353][ T3559] ? clear_bhb_loop+0x45/0xa0 [ 61.685029][ T3559] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 61.690923][ T3559] RIP: 0033:0x7f96c267c0b9 [ 61.695350][ T3559] 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 [ 61.714949][ T3559] RSP: 002b:00007fffe8e70798 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 61.723373][ T3559] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f96c267c0b9 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.731355][ T3559] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 61.739339][ T3559] RBP: 00007f96c26f72b0 R08: ffffffffffffffb8 R09: 00000000000000a0 [ 61.747345][ T3559] R10: 00000000000000a0 R11: 0000000000000246 R12: 00007f96c26f72b0 [ 61.755315][ T3559] R13: 0000000000000000 R14: 00007f96c26f7d20 R15: 00007f96c264d260 [ 61.763308][ T3559] executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program