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executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 192.134912][ C1] watchdog: BUG: soft lockup - CPU#1 stuck for 64s! [kworker/u4:5:1602] [ 192.137742][ C1] Modules linked in: [ 192.138899][ C1] irq event stamp: 833106 executing program [ 192.140088][ C1] hardirqs last enabled at (833105): [] seqcount_lockdep_reader_access+0x1fc/0x2c4 [ 192.143059][ C1] hardirqs last disabled at (833106): [] enter_el1_irq_or_nmi+0x10/0x1c [ 192.145718][ C1] softirqs last enabled at (767432): [] handle_softirqs+0xa4c/0xbf0 [ 192.148467][ C1] softirqs last disabled at (767417): [] __irq_exit_rcu+0x240/0x440 executing program [ 192.151095][ C1] CPU: 1 PID: 1602 Comm: kworker/u4:5 Not tainted 5.15.184-syzkaller #0 [ 192.153356][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 192.156136][ C1] Workqueue: events_power_efficient gc_worker [ 192.157879][ C1] pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 192.159953][ C1] pc : seqcount_lockdep_reader_access+0x21c/0x2c4 executing program [ 192.161729][ C1] lr : seqcount_lockdep_reader_access+0x218/0x2c4 [ 192.163462][ C1] sp : ffff800023707990 [ 192.164619][ C1] x29: ffff800023707990 x28: 0000000000010215 x27: ffff0000cc07a818 [ 192.166785][ C1] x26: ffff800014157000 x25: 1ffff00002cf0802 x24: ffff800016784000 [ 192.168940][ C1] x23: dfff800000000000 x22: 0000000000000000 x21: 0080000000000000 [ 192.171131][ C1] x20: 0000000000000030 x19: 0000000000000080 x18: 0000000000000002 executing program [ 192.173301][ C1] x17: 0000000040000000 x16: ffff8000082bf2b8 x15: 0000000000000002 [ 192.175506][ C1] x14: 0000000000ff0100 x13: 1ffff0000282a06b x12: 0000000000ff0100 [ 192.177704][ C1] x11: 0000000000000000 x10: 0000000000000000 x9 : ffff80000fa86258 [ 192.179808][ C1] x8 : ffff0000cca73680 x7 : 0000000000000000 x6 : 0000000000000000 [ 192.182001][ C1] x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff800008044e7c executing program [ 192.184150][ C1] x2 : 0000000000000006 x1 : 0000000000000080 x0 : 0000000000000000 [ 192.186361][ C1] Call trace: [ 192.187285][ C1] seqcount_lockdep_reader_access+0x21c/0x2c4 [ 192.188988][ C1] gc_worker+0x280/0x11a4 [ 192.190172][ C1] process_one_work+0x79c/0x1140 [ 192.191535][ C1] worker_thread+0x8f4/0x101c [ 192.192808][ C1] kthread+0x374/0x454 [ 192.193911][ C1] ret_from_fork+0x10/0x20 executing program [ 192.195124][ C1] Kernel panic - not syncing: softlockup: hung tasks [ 192.196936][ C1] CPU: 1 PID: 1602 Comm: kworker/u4:5 Tainted: G L 5.15.184-syzkaller #0 [ 192.199581][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 192.202326][ C1] Workqueue: events_power_efficient gc_worker executing program [ 192.203947][ C1] Call trace: [ 192.204830][ C1] dump_backtrace+0x0/0x43c [ 192.206041][ C1] show_stack+0x2c/0x3c [ 192.207157][ C1] __dump_stack+0x30/0x40 [ 192.208348][ C1] dump_stack_lvl+0xf8/0x160 [ 192.209568][ C1] dump_stack+0x1c/0x5c [ 192.210680][ C1] panic+0x2e4/0x854 [ 192.211747][ C1] softlockup_fn+0x0/0x120 [ 192.212921][ C1] __hrtimer_run_queues+0x3fc/0xb6c [ 192.214300][ C1] hrtimer_interrupt+0x4dc/0xb5c [ 192.215637][ C1] arch_timer_handler_virt+0x74/0x88 executing program [ 192.217076][ C1] handle_percpu_devid_irq+0x29c/0x76c [ 192.218542][ C1] handle_domain_irq+0x144/0x1fc [ 192.219877][ C1] gic_handle_irq+0x78/0x1c8 [ 192.221126][ C1] call_on_irq_stack+0x24/0x4c [ 192.222422][ C1] do_interrupt_handler+0x6c/0x88 [ 192.224098][ C1] el1_interrupt+0x30/0x58 [ 192.225262][ C1] el1h_64_irq_handler+0x18/0x24 [ 192.226537][ C1] el1h_64_irq+0x78/0x7c executing program [ 192.227724][ C1] seqcount_lockdep_reader_access+0x21c/0x2c4 [ 192.229361][ C1] gc_worker+0x280/0x11a4 [ 192.230530][ C1] process_one_work+0x79c/0x1140 [ 192.231882][ C1] worker_thread+0x8f4/0x101c [ 192.233153][ C1] kthread+0x374/0x454 [ 192.234277][ C1] ret_from_fork+0x10/0x20 [ 192.235451][ C1] SMP: stopping secondary CPUs [ 192.236788][ C1] Kernel Offset: disabled [ 192.238005][ C1] CPU features: 0x8,000081c1,21302e40 [ 192.239469][ C1] Memory Limit: none [ 192.251976][ C1] [ 192.252661][ C1] ================================ [ 192.253999][ C1] WARNING: inconsistent lock state [ 192.255359][ C1] 5.15.184-syzkaller #0 Tainted: G L [ 192.257135][ C1] -------------------------------- [ 192.258481][ C1] inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. [ 192.260288][ C1] kworker/u4:5/1602 [HC1[1]:SC0[0]:HE0:SE1] takes: [ 192.262091][ C1] ffff80001418e778 (efi_rt_lock){?...}-{2:2}, at: virt_efi_set_variable_nonblocking+0x74/0x16c [ 192.264976][ C1] {HARDIRQ-ON-W} state was registered at: [ 192.266516][ C1] lock_acquire+0x1f4/0x620 [ 192.267762][ C1] _raw_spin_lock+0xb0/0x10c [ 192.268993][ C1] efi_call_rts+0x384/0x9f4 [ 192.270209][ C1] process_one_work+0x79c/0x1140 [ 192.271565][ C1] worker_thread+0x8f4/0x101c [ 192.272865][ C1] kthread+0x374/0x454 [ 192.273991][ C1] ret_from_fork+0x10/0x20 [ 192.275173][ C1] irq event stamp: 833106 [ 192.276292][ C1] hardirqs last enabled at (833105): [] seqcount_lockdep_reader_access+0x1fc/0x2c4 [ 192.279343][ C1] hardirqs last disabled at (833106): [] enter_el1_irq_or_nmi+0x10/0x1c [ 192.282021][ C1] softirqs last enabled at (767432): [] handle_softirqs+0xa4c/0xbf0 [ 192.284656][ C1] softirqs last disabled at (767417): [] __irq_exit_rcu+0x240/0x440 [ 192.287249][ C1] [ 192.287249][ C1] other info that might help us debug this: [ 192.289406][ C1] Possible unsafe locking scenario: [ 192.289406][ C1] [ 192.291517][ C1] CPU0 [ 192.292443][ C1] ---- [ 192.293324][ C1] lock(efi_rt_lock); [ 192.294401][ C1] [ 192.295323][ C1] lock(efi_rt_lock); [ 192.296447][ C1] [ 192.296447][ C1] *** DEADLOCK *** [ 192.296447][ C1] [ 192.298666][ C1] 5 locks held by kworker/u4:5/1602: [ 192.300079][ C1] #0: ffff0000c002a138 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x678/0x1140 [ 192.303242][ C1] #1: ffff800023707c00 ((work_completion)(&(&gc_work->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1140 [ 192.306543][ C1] #2: ffff8000143211e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x10/0x4c [ 192.309102][ C1] #3: ffff8000143211e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x10/0x4c [ 192.311702][ C1] #4: ffff800015e7b6a8 (&psinfo->buf_lock){....}-{2:2}, at: pstore_dump+0x170/0x6f8 [ 192.314248][ C1] [ 192.314248][ C1] stack backtrace: [ 192.315833][ C1] CPU: 1 PID: 1602 Comm: kworker/u4:5 Tainted: G L 5.15.184-syzkaller #0 [ 192.318414][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 192.321158][ C1] Workqueue: events_power_efficient gc_worker [ 192.322816][ C1] Call trace: [ 192.323723][ C1] dump_backtrace+0x0/0x43c [ 192.324923][ C1] show_stack+0x2c/0x3c [ 192.326065][ C1] __dump_stack+0x30/0x40 [ 192.327221][ C1] dump_stack_lvl+0xf8/0x160 [ 192.328505][ C1] dump_stack+0x1c/0x5c [ 192.329615][ C1] print_usage_bug+0x3a4/0x550 [ 192.330903][ C1] mark_lock_irq+0x788/0x9e4 [ 192.332159][ C1] mark_lock+0x224/0x320 [ 192.333304][ C1] __lock_acquire+0xd28/0x651c [ 192.334675][ C1] lock_acquire+0x1f4/0x620 [ 192.335897][ C1] _raw_spin_lock+0xb0/0x10c [ 192.337138][ C1] virt_efi_set_variable_nonblocking+0x74/0x16c [ 192.338830][ C1] efivar_entry_set_safe+0x460/0x480 [ 192.340239][ C1] efi_pstore_write+0x22c/0x3ac [ 192.341555][ C1] pstore_dump+0x4dc/0x6f8 [ 192.342713][ C1] kmsg_dump+0x170/0x260 [ 192.343898][ C1] panic+0x338/0x854 [ 192.344942][ C1] softlockup_fn+0x0/0x120 [ 192.346104][ C1] __hrtimer_run_queues+0x3fc/0xb6c [ 192.347502][ C1] hrtimer_interrupt+0x4dc/0xb5c [ 192.348864][ C1] arch_timer_handler_virt+0x74/0x88 [ 192.350297][ C1] handle_percpu_devid_irq+0x29c/0x76c [ 192.351803][ C1] handle_domain_irq+0x144/0x1fc [ 192.353086][ C1] gic_handle_irq+0x78/0x1c8 [ 192.354311][ C1] call_on_irq_stack+0x24/0x4c [ 192.355593][ C1] do_interrupt_handler+0x6c/0x88 [ 192.357035][ C1] el1_interrupt+0x30/0x58 [ 192.358238][ C1] el1h_64_irq_handler+0x18/0x24 [ 192.359595][ C1] el1h_64_irq+0x78/0x7c [ 192.360764][ C1] seqcount_lockdep_reader_access+0x21c/0x2c4 [ 192.362317][ C1] gc_worker+0x280/0x11a4 [ 192.363483][ C1] process_one_work+0x79c/0x1140 [ 192.364833][ C1] worker_thread+0x8f4/0x101c [ 192.366180][ C1] kthread+0x374/0x454 [ 192.367264][ C1] ret_from_fork+0x10/0x20 [ 192.647287][ C1] Rebooting in 86400 seconds..