rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5616/1:b..l.. P5844/1:b..l..
rcu: (detected by 0, t=10524 jiffies, g=47337, q=992 ncpus=2)
task:kworker/0:7 state:R running task stack:25256 pid:5844 tgid:5844 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events jump_label_update_timeout
Call Trace:
context_switch kernel/sched/core.c:5581 [inline]
__schedule+0x1b47/0x5b40 kernel/sched/core.c:7384
preempt_schedule_common+0x7f/0xd0 kernel/sched/core.c:7563
preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:201 [inline]
_raw_spin_unlock+0x41/0x50 kernel/locking/spinlock.c:213
spin_unlock include/linux/spinlock.h:401 [inline]
__text_poke+0x814/0xa60 arch/x86/kernel/alternative.c:2516
text_poke arch/x86/kernel/alternative.c:2540 [inline]
smp_text_poke_batch_finish+0xd09/0x1110 arch/x86/kernel/alternative.c:2929
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
__static_key_slow_dec_cpuslocked+0xbb/0x110 kernel/jump_label.c:315
__static_key_slow_dec kernel/jump_label.c:321 [inline]
jump_label_update_timeout+0x1e/0x30 kernel/jump_label.c:329
process_one_work kernel/workqueue.c:3495 [inline]
process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3578
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3659
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
task:syz-executor state:R running task stack:21512 pid:5616 tgid:5616 ppid:5611 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5581 [inline]
__schedule+0x1b47/0x5b40 kernel/sched/core.c:7384
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7664
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:524 [inline]
irqentry_exit+0x14f/0x920 kernel/entry/common.c:154
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:81 [inline]
RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:103 [inline]
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:238 [inline]
RIP: 0010:unwind_next_frame+0x4f4/0x2550 arch/x86/kernel/unwind_orc.c:510
Code: 89 c1 48 c1 f9 02 48 c1 e8 3f 48 01 c8 48 83 e0 fe 49 8d 1c 47 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 <84> c0 75 27 48 63 03 48 01 d8 48 8d 4b 04 48 39 e8 4c 0f 46 f9 48
RSP: 0018:ffffc90003daf780 EFLAGS: 00000a07
RAX: 0000000000000000 RBX: ffffffff909c787c RCX: dffffc0000000000
RDX: ffffffff909c786c RSI: ffffffff91201550 RDI: ffffffff8c6df620
RBP: ffffffff823a205d R08: 000000000000000c R09: 0000000000000000
R10: ffffc90003daf878 R11: ffffffff81b31fe0 R12: ffffffff909c787c
R13: ffffffff909c7878 R14: ffffc90003daf828 R15: ffffffff909c787c
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
kasan_save_stack+0x3e/0x60 mm/kasan/common.c:57
kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:556
__call_rcu_common kernel/rcu/tree.c:3287 [inline]
call_rcu+0x86/0x300 kernel/rcu/tree.c:3395
destroy_inode fs/inode.c:393 [inline]
evict+0x987/0xb50 fs/inode.c:847
filename_unlinkat+0x43f/0x610 fs/namei.c:5736
__do_sys_unlink fs/namei.c:5767 [inline]
__se_sys_unlink+0x2e/0x140 fs/namei.c:5764
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb36cb9d247
RSP: 002b:00007ffd2b87ce68 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb36cb9d247
RDX: 00007ffd2b87ce90 RSI: 00007ffd2b87cf20 RDI: 00007ffd2b87cf20
RBP: 00007ffd2b87cf20 R08: 00007ffd2b87df20 R09: 00000000ffffffff
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffd2b87dfb0
R13: 00007fb36cc344bb R14: 00000000000713ad R15: 00007ffd2b87dff0
rcu: rcu_preempt kthread starved for 10579 jiffies! g47337 f0x0 RCU_GP_WAIT_FQS(5) ->state=R ->cpu=1
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:27496 pid:17 tgid:17 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5581 [inline]
__schedule+0x1b47/0x5b40 kernel/sched/core.c:7384
__schedule_loop kernel/sched/core.c:7461 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7476
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x1230 kernel/rcu/tree.c:2122
rcu_gp_kthread+0x9c/0x340 kernel/rcu/tree.c:2330
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:64
Code: 4b 85 02 e9 03 18 03 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 43 09 1e 00 fb f4 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90
RSP: 0018:ffffc900001c7e40 EFLAGS: 00000242
RAX: 0000000000d01c43 RBX: ffffffff819c16bc RCX: 8000000000000001
RDX: 0000000000000001 RSI: ffffffff8e43d4e5 RDI: ffffffff8c6df680
RBP: ffffc900001c7f10 R08: ffff8880b8733e5b R09: 1ffff110170e67cb
R10: dffffc0000000000 R11: ffffed10170e67cc R12: 0000000000000000
R13: 1ffff11003cd83e8 R14: 1ffff92000038fd0 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff888124dbd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9e539872c0 CR3: 0000000078054000 CR4: 00000000003526f0
Call Trace:
arch_safe_halt arch/x86/kernel/process.c:767 [inline]
default_idle+0x9/0x20 arch/x86/kernel/process.c:768
default_idle_call+0x72/0xb0 kernel/sched/idle.c:122
cpuidle_idle_call kernel/sched/idle.c:199 [inline]
do_idle+0x1cc/0x540 kernel/sched/idle.c:355
cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:454
start_secondary+0x101/0x110 arch/x86/kernel/smpboot.c:312
common_startup_64+0x13e/0x157