Warning: Permanently added '10.128.0.72' (ED25519) to the list of known hosts. 2025/11/04 18:08:46 parsed 1 programs [ 59.900224][ T3369] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 61.799697][ T3392] veth0_vlan: entered promiscuous mode 2025/11/04 18:08:49 executed programs: 0 [ 62.369634][ T13] veth0_vlan: left promiscuous mode [ 65.400322][ T3700] veth0_vlan: entered promiscuous mode [ 65.478621][ T3703] veth0_vlan: entered promiscuous mode [ 65.590361][ T3698] veth0_vlan: entered promiscuous mode [ 65.749526][ T3707] veth0_vlan: entered promiscuous mode 2025/11/04 18:08:54 executed programs: 39 [ 67.558367][ T4762] [ 67.560713][ T4762] ============================================ [ 67.566838][ T4762] WARNING: possible recursive locking detected [ 67.572965][ T4762] syzkaller #0 Not tainted [ 67.577341][ T4762] -------------------------------------------- [ 67.583462][ T4762] syz.5.83/4762 is trying to acquire lock: [ 67.589227][ T4762] ffffc900011410d8 (&rb->spinlock){-.-.}-{2:2}, at: __bpf_ringbuf_reserve+0x92/0x1d0 [ 67.598666][ T4762] [ 67.598666][ T4762] but task is already holding lock: [ 67.605995][ T4762] ffffc900014cd0d8 (&rb->spinlock){-.-.}-{2:2}, at: __bpf_ringbuf_reserve+0x92/0x1d0 [ 67.615419][ T4762] [ 67.615419][ T4762] other info that might help us debug this: [ 67.623439][ T4762] Possible unsafe locking scenario: [ 67.623439][ T4762] [ 67.630849][ T4762] CPU0 [ 67.634185][ T4762] ---- [ 67.637520][ T4762] lock(&rb->spinlock); [ 67.641810][ T4762] lock(&rb->spinlock); [ 67.646012][ T4762] [ 67.646012][ T4762] *** DEADLOCK *** [ 67.646012][ T4762] [ 67.654141][ T4762] May be due to missing lock nesting notation [ 67.654141][ T4762] [ 67.662422][ T4762] 4 locks held by syz.5.83/4762: [ 67.667408][ T4762] #0: ffffffff8319e718 (link_idr_lock){+...}-{2:2}, at: bpf_link_free+0x22/0xe0 [ 67.676660][ T4762] #1: ffffffff83185d88 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x54/0x1a0 [ 67.685997][ T4762] #2: ffffc900014cd0d8 (&rb->spinlock){-.-.}-{2:2}, at: __bpf_ringbuf_reserve+0x92/0x1d0 [ 67.696371][ T4762] #3: ffffffff83185d88 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x54/0x1a0 [ 67.705798][ T4762] [ 67.705798][ T4762] stack backtrace: [ 67.711680][ T4762] CPU: 0 PID: 4762 Comm: syz.5.83 Not tainted syzkaller #0 [ 67.718950][ T4762] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 [ 67.729233][ T4762] Call Trace: [ 67.732481][ T4762] [ 67.735383][ T4762] dump_stack_lvl+0x83/0xe0 [ 67.739854][ T4762] print_deadlock_bug+0x2ac/0x2f0 [ 67.744870][ T4762] __lock_acquire+0x1146/0x22c0 [ 67.749680][ T4762] ? mas_wr_modify+0x198c/0x1c60 [ 67.754591][ T4762] ? __lock_acquire+0x4be/0x22c0 [ 67.759487][ T4762] ? is_module_text_address+0x5a/0x80 [ 67.764849][ T4762] ? __bpf_ringbuf_reserve+0x92/0x1d0 [ 67.770189][ T4762] lock_acquire+0xe9/0x260 [ 67.774565][ T4762] ? __bpf_ringbuf_reserve+0x92/0x1d0 [ 67.779906][ T4762] _raw_spin_lock_irqsave+0x60/0x90 [ 67.785068][ T4762] ? __bpf_ringbuf_reserve+0x92/0x1d0 [ 67.790403][ T4762] __bpf_ringbuf_reserve+0x92/0x1d0 [ 67.795559][ T4762] ? bpf_trace_run2+0x54/0x1a0 [ 67.800284][ T4762] bpf_ringbuf_reserve+0x15/0x20 [ 67.805269][ T4762] ___bpf_prog_run+0xe04/0x24e0 [ 67.810084][ T4762] ? bpf_trace_run2+0x54/0x1a0 [ 67.814809][ T4762] __bpf_prog_run32+0xbb/0xe0 [ 67.819541][ T4762] bpf_trace_run2+0xc7/0x1a0 [ 67.824263][ T4762] ? __bpf_ringbuf_reserve+0x92/0x1d0 [ 67.829596][ T4762] __traceiter_contention_end+0x28/0x40 [ 67.835112][ T4762] __pv_queued_spin_lock_slowpath+0x446/0x460 [ 67.841156][ T4762] do_raw_spin_lock+0xcf/0xe0 [ 67.845797][ T4762] _raw_spin_lock_irqsave+0x6c/0x90 [ 67.850957][ T4762] __bpf_ringbuf_reserve+0x92/0x1d0 [ 67.856139][ T4762] ? bpf_trace_run2+0x54/0x1a0 [ 67.860863][ T4762] bpf_ringbuf_reserve+0x15/0x20 [ 67.865760][ T4762] ___bpf_prog_run+0xe04/0x24e0 [ 67.870577][ T4762] ? bpf_trace_run2+0x54/0x1a0 [ 67.875303][ T4762] __bpf_prog_run32+0xbb/0xe0 [ 67.879943][ T4762] bpf_trace_run2+0xc7/0x1a0 [ 67.884492][ T4762] __traceiter_contention_end+0x28/0x40 [ 67.890005][ T4762] __pv_queued_spin_lock_slowpath+0x446/0x460 [ 67.896035][ T4762] do_raw_spin_lock+0xcf/0xe0 [ 67.900673][ T4762] bpf_link_free+0x22/0xe0 [ 67.905059][ T4762] bpf_link_release+0x16/0x20 [ 67.909695][ T4762] __fput+0x87/0x290 [ 67.913554][ T4762] task_work_run+0x7e/0xa0 [ 67.917933][ T4762] exit_to_user_mode_loop+0xda/0xf0 [ 67.923091][ T4762] exit_to_user_mode_prepare+0xea/0x150 [ 67.928596][ T4762] syscall_exit_to_user_mode+0x1a/0x50 [ 67.934021][ T4762] do_syscall_64+0x61/0xb0 [ 67.938429][ T4762] ? clear_bhb_loop+0x40/0x90 [ 67.943068][ T4762] ? clear_bhb_loop+0x40/0x90 [ 67.947704][ T4762] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 67.953559][ T4762] RIP: 0033:0x7fee6a93eec9 [ 67.957938][ T4762] 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 [ 67.977589][ T4762] RSP: 002b:00007ffe095dd7f8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 67.985960][ T4762] RAX: 0000000000000000 RBX: 00000000000107a0 RCX: 00007fee6a93eec9 [ 67.993913][ T4762] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 68.001965][ T4762] RBP: 00007fee6ab97da0 R08: 0000000000000001 R09: 00000004095ddaef [ 68.010088][ T4762] R10: 0000001b33120000 R11: 0000000000000246 R12: 00007fee6ab95fac [ 68.018025][ T4762] R13: 00007fee6ab95fa0 R14: ffffffffffffffff R15: 00007ffe095dd910 [ 68.025961][ T4762] 2025/11/04 18:08:59 executed programs: 373 2025/11/04 18:09:04 executed programs: 738