Warning: Permanently added '10.128.1.124' (ED25519) to the list of known hosts. 2025/09/23 12:41:23 parsed 1 programs [ 52.971922][ T3362] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 55.195297][ T3371] veth0_vlan: entered promiscuous mode 2025/09/23 12:41:26 executed programs: 0 [ 55.730358][ T11] veth0_vlan: left promiscuous mode [ 59.401565][ T3695] veth0_vlan: entered promiscuous mode [ 59.459643][ T3688] veth0_vlan: entered promiscuous mode [ 59.721569][ T3698] veth0_vlan: entered promiscuous mode [ 59.753826][ T3692] veth0_vlan: entered promiscuous mode 2025/09/23 12:41:31 executed programs: 8 [ 63.699980][ T5052] [ 63.702374][ T5052] ============================================ [ 63.708943][ T5052] WARNING: possible recursive locking detected [ 63.715105][ T5052] syzkaller #0 Not tainted [ 63.719934][ T5052] -------------------------------------------- [ 63.726078][ T5052] syz.2.230/5052 is trying to acquire lock: [ 63.732172][ T5052] ffff888113412e18 (&qs->lock){-.-.}-{2:2}, at: queue_stack_map_push_elem+0x8b/0x1b0 [ 63.742398][ T5052] [ 63.742398][ T5052] but task is already holding lock: [ 63.749822][ T5052] ffff888113411218 (&qs->lock){-.-.}-{2:2}, at: queue_stack_map_push_elem+0x8b/0x1b0 [ 63.759685][ T5052] [ 63.759685][ T5052] other info that might help us debug this: [ 63.768159][ T5052] Possible unsafe locking scenario: [ 63.768159][ T5052] [ 63.775840][ T5052] CPU0 [ 63.779279][ T5052] ---- [ 63.782534][ T5052] lock(&qs->lock); [ 63.786403][ T5052] lock(&qs->lock); [ 63.790530][ T5052] [ 63.790530][ T5052] *** DEADLOCK *** [ 63.790530][ T5052] [ 63.798996][ T5052] May be due to missing lock nesting notation [ 63.798996][ T5052] [ 63.807560][ T5052] 4 locks held by syz.2.230/5052: [ 63.813000][ T5052] #0: ffff8881230b2f48 (&tsk->futex_exit_mutex){+.+.}-{3:3}, at: futex_exit_release+0x1d/0xc0 [ 63.823927][ T5052] #1: ffffffff83185d48 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x54/0x1a0 [ 63.833463][ T5052] #2: ffff888113411218 (&qs->lock){-.-.}-{2:2}, at: queue_stack_map_push_elem+0x8b/0x1b0 [ 63.843597][ T5052] #3: ffffffff83185d48 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x54/0x1a0 [ 63.853046][ T5052] [ 63.853046][ T5052] stack backtrace: [ 63.859088][ T5052] CPU: 1 PID: 5052 Comm: syz.2.230 Not tainted syzkaller #0 [ 63.866527][ T5052] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 [ 63.876568][ T5052] Call Trace: [ 63.879928][ T5052] [ 63.882840][ T5052] dump_stack_lvl+0x83/0xe0 [ 63.887669][ T5052] print_deadlock_bug+0x2ac/0x2f0 [ 63.893026][ T5052] __lock_acquire+0x1146/0x22c0 [ 63.898131][ T5052] ? slab_post_alloc_hook+0x78/0x4a0 [ 63.903665][ T5052] ? check_stack_access_within_bounds+0x221/0x310 [ 63.910321][ T5052] ? __kmem_cache_alloc_node+0x1d5/0x2d0 [ 63.916188][ T5052] ? queue_stack_map_push_elem+0x8b/0x1b0 [ 63.922143][ T5052] lock_acquire+0xe9/0x260 [ 63.926793][ T5052] ? queue_stack_map_push_elem+0x8b/0x1b0 [ 63.932498][ T5052] ? __lock_acquire+0x4be/0x22c0 [ 63.937612][ T5052] _raw_spin_lock_irqsave+0x60/0x90 [ 63.942873][ T5052] ? queue_stack_map_push_elem+0x8b/0x1b0 [ 63.948753][ T5052] queue_stack_map_push_elem+0x8b/0x1b0 [ 63.954455][ T5052] ? bpf_trace_run2+0x54/0x1a0 [ 63.959470][ T5052] ___bpf_prog_run+0xe04/0x24e0 [ 63.964571][ T5052] ? bpf_trace_run2+0x54/0x1a0 [ 63.969502][ T5052] __bpf_prog_run32+0xbb/0xe0 [ 63.974518][ T5052] bpf_trace_run2+0xc7/0x1a0 [ 63.979361][ T5052] ? queue_stack_map_push_elem+0x8b/0x1b0 [ 63.985490][ T5052] __traceiter_contention_end+0x28/0x40 [ 63.991361][ T5052] __pv_queued_spin_lock_slowpath+0x446/0x460 [ 63.997591][ T5052] ? _raw_spin_lock_irqsave+0x3a/0x90 [ 64.003138][ T5052] do_raw_spin_lock+0xcf/0xe0 [ 64.008151][ T5052] _raw_spin_lock_irqsave+0x6c/0x90 [ 64.014296][ T5052] queue_stack_map_push_elem+0x8b/0x1b0 [ 64.019941][ T5052] ? __lock_acquire+0x4be/0x22c0 [ 64.024952][ T5052] ? bpf_trace_run2+0x54/0x1a0 [ 64.029691][ T5052] ___bpf_prog_run+0xe04/0x24e0 [ 64.034794][ T5052] ? bpf_trace_run2+0x54/0x1a0 [ 64.039631][ T5052] __bpf_prog_run32+0xbb/0xe0 [ 64.044539][ T5052] bpf_trace_run2+0xc7/0x1a0 [ 64.049184][ T5052] __traceiter_contention_end+0x28/0x40 [ 64.054709][ T5052] ? futex_exit_release+0x1d/0xc0 [ 64.059710][ T5052] __mutex_lock+0x886/0xa00 [ 64.064344][ T5052] ? perf_lock_task_context+0x2e3/0x350 [ 64.069862][ T5052] ? lockdep_hardirqs_on+0x98/0xf0 [ 64.075042][ T5052] futex_exit_release+0x1d/0xc0 [ 64.079860][ T5052] exit_mm_release+0x12/0x20 [ 64.084604][ T5052] exit_mm+0x33/0x150 [ 64.088818][ T5052] do_exit+0x239/0xa00 [ 64.092967][ T5052] do_group_exit+0x87/0xa0 [ 64.097540][ T5052] get_signal+0x6f1/0x7a0 [ 64.101933][ T5052] arch_do_signal_or_restart+0x89/0x2a0 [ 64.107450][ T5052] exit_to_user_mode_loop+0x70/0xf0 [ 64.112618][ T5052] exit_to_user_mode_prepare+0xea/0x150 [ 64.118148][ T5052] syscall_exit_to_user_mode+0x1a/0x50 [ 64.123966][ T5052] do_syscall_64+0x61/0xb0 [ 64.128438][ T5052] ? clear_bhb_loop+0x40/0x90 [ 64.133446][ T5052] ? clear_bhb_loop+0x40/0x90 [ 64.138100][ T5052] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 64.144147][ T5052] RIP: 0033:0x7fb80939ebe9 [ 64.148554][ T5052] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 [ 64.168654][ T5052] RSP: 002b:00007fb80920f0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 64.177397][ T5052] RAX: fffffffffffffe00 RBX: 00007fb8095c5fa8 RCX: 00007fb80939ebe9 [ 64.185526][ T5052] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fb8095c5fa8 [ 64.193569][ T5052] RBP: 00007fb8095c5fa0 R08: 0000000000000000 R09: 0000000000000000 [ 64.201614][ T5052] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 64.210084][ T5052] R13: 00007fb8095c6038 R14: 00007fff9445abd0 R15: 00007fff9445acb8 [ 64.218129][ T5052] 2025/09/23 12:41:36 executed programs: 329 2025/09/23 12:41:41 executed programs: 685