Warning: Permanently added '10.128.1.76' (ED25519) to the list of known hosts. executing program executing program executing program [ 94.221980][ T30] kauditd_printk_skb: 9 callbacks suppressed [ 94.221998][ T30] audit: type=1400 audit(1779126681.912:129): avc: denied { execmem } for pid=5620 comm="syz-executor184" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 199.270671][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 199.277748][ C1] rcu: (detected by 1, t=10502 jiffies, g=10913, q=267 ncpus=2) [ 199.285459][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294957078-4294946575), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 199.298832][ C1] rcu: rcu_preempt kthread starved for 10504 jiffies! g10913 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 199.310029][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 199.319993][ C1] rcu: RCU grace-period kthread stack dump: [ 199.325869][ C1] task:rcu_preempt state:R running task stack:28840 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000 [ 199.339400][ C1] Call Trace: [ 199.342687][ C1] [ 199.345619][ C1] __schedule+0x1295/0x67a0 [ 199.350170][ C1] ? finish_task_switch.isra.0+0x2c6/0x1010 [ 199.356066][ C1] ? finish_task_switch.isra.0+0x2c6/0x1010 [ 199.361969][ C1] ? finish_task_switch.isra.0+0x2cb/0x1010 [ 199.367866][ C1] ? rcu_is_watching+0x12/0xc0 [ 199.372645][ C1] ? __pfx___schedule+0x10/0x10 [ 199.377507][ C1] ? rcu_is_watching+0x12/0xc0 [ 199.382285][ C1] preempt_schedule_irq+0x50/0x90 [ 199.387325][ C1] irqentry_exit+0x205/0x7e0 [ 199.391937][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 199.397926][ C1] RIP: 0010:schedule_timeout+0x127/0x280 [ 199.403564][ C1] Code: 40 df b2 8b 4c 89 74 24 70 48 c7 c6 70 ed f4 81 48 01 c3 e8 9b 64 66 f6 4c 89 e7 48 89 5c 24 30 e8 ce 7f 66 f6 e8 39 65 fe ff <4c> 89 e7 e8 11 31 66 f6 4c 89 e7 e8 99 20 66 f6 48 b8 00 00 00 00 [ 199.423179][ C1] RSP: 0018:ffffc90000157bb0 EFLAGS: 00010246 [ 199.429254][ C1] RAX: 0000000000208040 RBX: 00000000ffffaf10 RCX: 0000000000000000 [ 199.437221][ C1] RDX: 0000000000000000 RSI: ffffffff8c1c3980 RDI: 0000000000000001 [ 199.445197][ C1] RBP: 1ffff9200002af76 R08: 0000000000000000 R09: fffffbfff21af9ca [ 199.453168][ C1] R10: ffffffff90d7ce57 R11: 0000000000000000 R12: ffffc90000157bd0 [ 199.461146][ C1] R13: 1ffffffff1c81e50 R14: ffff88801e2b0000 R15: dffffc0000000000 [ 199.469133][ C1] ? __pfx_schedule_timeout+0x10/0x10 [ 199.474516][ C1] ? __pfx_process_timeout+0x10/0x10 [ 199.479807][ C1] ? _raw_spin_unlock_irqrestore+0x3b/0x80 [ 199.485620][ C1] ? prepare_to_swait_event+0xdf/0x4a0 [ 199.491091][ C1] rcu_gp_fqs_loop+0x1a9/0x900 [ 199.495861][ C1] ? __pfx_rcu_gp_fqs_loop+0x10/0x10 [ 199.501155][ C1] ? prepare_to_swait_event+0xae/0x4a0 [ 199.506622][ C1] ? __pfx_rcu_gp_init+0x10/0x10 [ 199.511565][ C1] ? __pfx_rcu_gp_cleanup+0x10/0x10 [ 199.516768][ C1] ? _raw_spin_unlock_irqrestore+0x52/0x80 [ 199.522585][ C1] rcu_gp_kthread+0x179/0x230 [ 199.527271][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 199.532470][ C1] ? _raw_spin_unlock_irqrestore+0x52/0x80 [ 199.538284][ C1] ? __kthread_parkme+0x18c/0x230 [ 199.543311][ C1] ? kthread+0x13a/0x450 [ 199.547555][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 199.552756][ C1] kthread+0x370/0x450 [ 199.556833][ C1] ? __pfx_kthread+0x10/0x10 [ 199.561429][ C1] ret_from_fork+0x72b/0xd50 [ 199.566026][ C1] ? __pfx_ret_from_fork+0x10/0x10 [ 199.571143][ C1] ? __switch_to+0x800/0x1100 [ 199.575833][ C1] ? __pfx_kthread+0x10/0x10 [ 199.580430][ C1] ret_from_fork_asm+0x1a/0x30 [ 199.585223][ C1] [ 199.588241][ C1] rcu: Stack dump where RCU GP kthread last ran: [ 199.594573][ C1] CPU: 1 UID: 0 PID: 5631 Comm: syz-executor184 Not tainted syzkaller #0 PREEMPT(full) [ 199.604295][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 199.614343][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 [ 199.620419][ C1] Code: 56 61 5c 00 48 89 df 5b e9 1d ec 61 00 be 03 00 00 00 5b e9 72 e0 f0 02 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 65 8b 05 25 81 02 12 48 8b 34 24 65 48 8b 15 01 81 02 [ 199.640028][ C1] RSP: 0018:ffffc9000207f988 EFLAGS: 00000246 [ 199.646093][ C1] RAX: 0000000000000000 RBX: 00007f27d6e5cb28 RCX: ffffffff81fadf1e [ 199.654061][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888079bd4a00 [ 199.662028][ C1] RBP: 0000000000000002 R08: 0000000000000001 R09: 0000000000000000 [ 199.669995][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 199.677960][ C1] R13: 0000000000000000 R14: ffffc9000207fb90 R15: 0000000000000000 [ 199.685928][ C1] FS: 00007f27d6d846c0(0000) GS:ffff88812446d000(0000) knlGS:0000000000000000 [ 199.694865][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 199.701445][ C1] CR2: 00007ffccf0fee80 CR3: 0000000070d82000 CR4: 00000000003526f0 [ 199.709412][ C1] Call Trace: [ 199.712688][ C1] [ 199.715612][ C1] get_futex_key+0x1ec/0x1510 [ 199.720300][ C1] ? __pfx_get_futex_key+0x10/0x10 [ 199.725424][ C1] ? find_held_lock+0x2b/0x80 [ 199.730102][ C1] futex_wait_setup+0x83/0x510 [ 199.734875][ C1] __futex_wait+0x19f/0x300 [ 199.739382][ C1] ? __pfx___futex_wait+0x10/0x10 [ 199.744412][ C1] ? __pfx_futex_wake_mark+0x10/0x10 [ 199.749706][ C1] ? __might_fault+0xc5/0x140 [ 199.754399][ C1] futex_wait+0xe6/0x370 [ 199.758646][ C1] ? __pfx_futex_wait+0x10/0x10 [ 199.763513][ C1] do_futex+0x1ef/0x350 [ 199.767684][ C1] ? __pfx_do_futex+0x10/0x10 [ 199.772371][ C1] ? __pfx_restore_altstack+0x10/0x10 [ 199.777748][ C1] __x64_sys_futex+0x34f/0x4d0 [ 199.782525][ C1] ? __pfx___x64_sys_futex+0x10/0x10 [ 199.787818][ C1] ? __do_sys_rt_sigreturn+0x1da/0x2c0 [ 199.793273][ C1] ? __pfx___do_sys_rt_sigreturn+0x10/0x10 [ 199.799088][ C1] ? rcu_is_watching+0x12/0xc0 [ 199.803866][ C1] do_syscall_64+0x10b/0xf80 [ 199.808467][ C1] ? clear_bhb_loop+0x40/0x90 [ 199.813150][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 199.819050][ C1] RIP: 0033:0x7f27d6dad4d9 [ 199.823470][ C1] Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 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 d0 ff ff ff f7 d8 64 89 01 48 [ 199.843082][ C1] RSP: 002b:00007f27d6d84138 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 199.851499][ C1] RAX: ffffffffffffffda RBX: 00007f27d6e5cb28 RCX: 00007f27d6dad4d9 [ 199.859469][ C1] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f27d6e5cb28 [ 199.867436][ C1] RBP: 00007f27d6e5cb20 R08: 00007f27d6d84cdc R09: 00007f27d6d84cdc [ 199.875404][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f27d6e5cb2c [ 199.883370][ C1] R13: 0000000000000000 R14: 00007ffccf0ff9a0 R15: 00007ffccf0ffa88 [ 199.891354][ C1] executing program executing program executing program executing program executing program executing program executing program executing program executing program