Warning: Permanently added '10.128.0.34' (ED25519) to the list of known hosts.
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[ 42.460869][ C0]
[ 42.463231][ C0] ============================================
[ 42.469361][ C0] WARNING: possible recursive locking detected
[ 42.475490][ C0] 5.15.157-syzkaller #0 Not tainted
[ 42.480661][ C0] --------------------------------------------
[ 42.486805][ C0] ksoftirqd/0/14 is trying to acquire lock:
[ 42.492848][ C0] ffff88801a82b9c0 (&stab->lock){+.-.}-{2:2}, at: sock_map_delete_elem+0x161/0x230
[ 42.502154][ C0]
[ 42.502154][ C0] but task is already holding lock:
[ 42.509490][ C0] ffff88801a82b9c0 (&stab->lock){+.-.}-{2:2}, at: sock_map_delete_elem+0x161/0x230
[ 42.518771][ C0]
[ 42.518771][ C0] other info that might help us debug this:
[ 42.526810][ C0] Possible unsafe locking scenario:
[ 42.526810][ C0]
[ 42.534247][ C0] CPU0
[ 42.537509][ C0] ----
[ 42.540772][ C0] lock(&stab->lock);
[ 42.544822][ C0] lock(&stab->lock);
[ 42.548870][ C0]
[ 42.548870][ C0] *** DEADLOCK ***
[ 42.548870][ C0]
[ 42.556995][ C0] May be due to missing lock nesting notation
[ 42.556995][ C0]
[ 42.565288][ C0] 5 locks held by ksoftirqd/0/14:
[ 42.570287][ C0] #0: ffffffff8c91fbe0 (rcu_callback){....}-{0:0}, at: rcu_lock_acquire+0x0/0x20
[ 42.579494][ C0] #1: ffffffff8c91fb20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30
[ 42.588778][ C0] #2: ffff88801a82b9c0 (&stab->lock){+.-.}-{2:2}, at: sock_map_delete_elem+0x161/0x230
[ 42.598496][ C0] #3: ffff888078fc8290 (&psock->link_lock){+.-.}-{2:2}, at: sock_map_unref+0xcc/0x5d0
[ 42.608125][ C0] #4: ffffffff8c91fb20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30
[ 42.617450][ C0]
[ 42.617450][ C0] stack backtrace:
[ 42.623313][ C0] CPU: 0 PID: 14 Comm: ksoftirqd/0 Not tainted 5.15.157-syzkaller #0
[ 42.631352][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
[ 42.641385][ C0] Call Trace:
[ 42.644643][ C0]
[ 42.647466][ C0] dump_stack_lvl+0x1e3/0x2d0
[ 42.652134][ C0] ? io_uring_drop_tctx_refs+0x1a0/0x1a0
[ 42.657760][ C0] ? panic+0x860/0x860
[ 42.661906][ C0] validate_chain+0x46d2/0x5930
[ 42.666753][ C0] ? rcu_is_watching+0x11/0xa0
[ 42.671502][ C0] ? check_path+0x21/0x40
[ 42.675828][ C0] ? check_noncircular+0x1e1/0x3b0
[ 42.680924][ C0] ? reacquire_held_locks+0x660/0x660
[ 42.686280][ C0] ? lockdep_unlock+0x166/0x300
[ 42.691140][ C0] ? lockdep_lock+0x2a0/0x2a0
[ 42.695799][ C0] ? reacquire_held_locks+0x660/0x660
[ 42.701152][ C0] ? validate_chain+0x13bd/0x5930
[ 42.706159][ C0] ? mark_lock+0x98/0x340
[ 42.710480][ C0] __lock_acquire+0x1295/0x1ff0
[ 42.715365][ C0] lock_acquire+0x1db/0x4f0
[ 42.719887][ C0] ? sock_map_delete_elem+0x161/0x230
[ 42.725261][ C0] ? read_lock_is_recursive+0x10/0x10
[ 42.730623][ C0] ? sock_map_delete_elem+0x161/0x230
[ 42.735977][ C0] ? __bpf_trace_softirq+0x10/0x10
[ 42.741074][ C0] ? sock_map_delete_elem+0x161/0x230
[ 42.746427][ C0] _raw_spin_lock_bh+0x31/0x40
[ 42.751181][ C0] ? sock_map_delete_elem+0x161/0x230
[ 42.756542][ C0] sock_map_delete_elem+0x161/0x230
[ 42.761738][ C0] ? sock_map_update_elem+0x380/0x380
[ 42.767102][ C0] bpf_prog_2c29ac5cdc6b1842+0x3a/0x7ac
[ 42.772631][ C0] bpf_trace_run2+0x19e/0x340
[ 42.777296][ C0] ? bpf_trace_run1+0x2f0/0x2f0
[ 42.782127][ C0] ? sock_map_unref+0x3ac/0x5d0
[ 42.786962][ C0] ? do_raw_spin_lock+0x14a/0x370
[ 42.791966][ C0] ? __bpf_trace_softirq+0x10/0x10
[ 42.797057][ C0] ? sock_map_unref+0x3ac/0x5d0
[ 42.801894][ C0] __bpf_trace_kfree+0x6e/0x90
[ 42.806638][ C0] ? sock_map_unref+0x3ac/0x5d0
[ 42.811468][ C0] kfree+0x22f/0x270
[ 42.815345][ C0] ? sock_map_unref+0xcc/0x5d0
[ 42.820089][ C0] sock_map_unref+0x3ac/0x5d0
[ 42.824747][ C0] sock_map_delete_elem+0x191/0x230
[ 42.829924][ C0] ? sock_map_update_elem+0x380/0x380
[ 42.835276][ C0] bpf_prog_2c29ac5cdc6b1842+0x3a/0x7ac
[ 42.840802][ C0] bpf_trace_run2+0x19e/0x340
[ 42.845458][ C0] ? bpf_trace_run1+0x2f0/0x2f0
[ 42.850285][ C0] ? security_task_free+0x96/0xc0
[ 42.855292][ C0] ? rcu_lock_release+0x5/0x20
[ 42.860213][ C0] ? __lock_acquire+0x1ff0/0x1ff0
[ 42.865219][ C0] ? security_task_free+0x96/0xc0
[ 42.870226][ C0] ? put_task_struct_rcu_user+0x90/0x90
[ 42.875750][ C0] __bpf_trace_kfree+0x6e/0x90
[ 42.880504][ C0] ? security_task_free+0x96/0xc0
[ 42.885509][ C0] kfree+0x22f/0x270
[ 42.889386][ C0] ? put_task_struct_rcu_user+0x90/0x90
[ 42.894914][ C0] security_task_free+0x96/0xc0
[ 42.899743][ C0] __put_task_struct+0xf4/0x2b0
[ 42.904575][ C0] rcu_core+0xa15/0x1650
[ 42.908799][ C0] ? local_bh_disable+0x20/0x20
[ 42.913723][ C0] ? lockdep_hardirqs_on_prepare+0x438/0x7a0
[ 42.919679][ C0] ? rcu_qs+0xed/0x190
[ 42.923726][ C0] ? rcu_softirq_qs+0x2b0/0x2b0
[ 42.928557][ C0] ? lockdep_hardirqs_on_prepare+0x438/0x7a0
[ 42.934518][ C0] ? lockdep_hardirqs_on+0x94/0x130
[ 42.939694][ C0] ? print_irqtrace_events+0x210/0x210
[ 42.945127][ C0] ? rcu_softirq_qs+0x75/0x2b0
[ 42.949875][ C0] ? rcu_get_gp_kthreads_prio+0x10/0x10
[ 42.955401][ C0] __do_softirq+0x3b3/0x93a
[ 42.959895][ C0] ? __irq_exit_rcu+0x155/0x240
[ 42.964727][ C0] ? __entry_text_end+0x1fe9f7/0x1fe9f7
[ 42.970250][ C0] ? hrtimer_interrupt+0x76b/0x980
[ 42.975341][ C0] ? irqtime_account_irq+0xd0/0x1e0
[ 42.980520][ C0] __irq_exit_rcu+0x155/0x240
[ 42.985173][ C0] ? irq_exit_rcu+0x20/0x20
[ 42.989655][ C0] irq_exit_rcu+0x5/0x20
[ 42.993873][ C0] sysvec_apic_timer_interrupt+0x91/0xb0
[ 42.999495][ C0]
[ 43.002403][ C0]
[ 43.005314][ C0] asm_sysvec_apic_timer_interrupt+0x16/0x20
[ 43.011272][ C0] RIP: 0010:ksoftirqd_should_run+0x0/0x20
[ 43.016970][ C0] Code: e8 35 8c 48 c7 c7 80 45 7c 8c e8 0b e4 dc 02 43 80 3c 2c 00 0f 85 02 fc ff ff e9 05 fc ff ff e8 e6 2a d0 08 66 0f 1f 44 00 00 <48> c7 c7 40 10 8a 8a e8 b4 3f d0 08 65 66 8b 05 2c f6 b5 7e 0f b7
[ 43.036555][ C0] RSP: 0018:ffffc90000d37e68 EFLAGS: 00000246
[ 43.042603][ C0] RAX: 0000000000000000 RBX: ffffffff814da2c0 RCX: ffffffff8c7c4378
[ 43.050561][ C0] RDX: 0000000000000002 RSI: ffffffff8c7da790 RDI: 0000000000000000
[ 43.058518][ C0] RBP: ffff88813fe23540 R08: 0000000000000005 R09: ffffffff815663f1
[ 43.066466][ C0] R10: 0000000000000002 R11: ffff88813fe21dc0 R12: 1ffff110023bac98
[ 43.074414][ C0] R13: ffff888011dd64c0 R14: dffffc0000000000 R15: 1ffff110023bac98
[ 43.082369][ C0] ? takeover_tasklets+0x7b0/0x7b0
[ 43.087459][ C0] ? smpboot_thread_fn+0x2c1/0x9d0
[ 43.092550][ C0] smpboot_thread_fn+0x470/0x9d0
[ 43.097468][ C0] kthread+0x3f6/0x4f0
[ 43.101520][ C0] ? cpu_report_death+0x180/0x180
[ 43.106521][ C0] ? kthread_blkcg+0xd0/0xd0
[ 43.111092][ C0] ret_from_fork+0x1f/0x30
[ 43.115494][ C0]