rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4210/1:b..l P5050/1:b..l P4257/1:b..l P5051/1:b..l
(detected by 1, t=10502 jiffies, g=10233, q=154)
task:dhcpcd-run-hook state:R running task stack:28576 pid: 5051 ppid: 5048 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x11b8/0x43b0 kernel/sched/core.c:6376
preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6780
irqentry_exit+0x63/0x70 kernel/entry/common.c:432
asm_sysvec_reschedule_ipi+0x16/0x20 arch/x86/include/asm/idtentry.h:681
RIP: 0010:rcu_lockdep_current_cpu_online+0xfc/0x130 kernel/rcu/tree.c:1175
Code: d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 ba 90 59 00 48 f7 03 01 00 00 00 75 04 31 c0 eb 02 b0 01 65 ff 0d 6c d5 9e 7e <74> 08 5b 41 5c 41 5e 41 5f c3 e8 1d e0 9c ff eb f1 48 c7 c7 00 1a
RSP: 0018:ffffc9000312f888 EFLAGS: 00000286
RAX: 1ffffffff1824301 RBX: ffffffff8c121e40 RCX: 4d776236188c9f00
RDX: 0000000000000000 RSI: ffffffff8a59a320 RDI: ffff8880b913b198
RBP: ffffc9000312f990 R08: dffffc0000000000 R09: fffffbfff1ff3419
R10: fffffbfff1ff3419 R11: 1ffffffff1ff3418 R12: 0000000000000002
R13: 1ffff92000625f1c R14: ffffffff8c121eb0 R15: dffffc0000000000
rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
rcu_read_lock_held+0x1a/0x40 kernel/rcu/update.c:309
task_css include/linux/cgroup.h:496 [inline]
mem_cgroup_from_task+0x96/0x110 mm/memcontrol.c:935
count_memcg_event_mm+0x169/0x360 include/linux/memcontrol.h:1080
handle_mm_fault+0x12d/0x43c0 mm/memory.c:4863
faultin_page mm/gup.c:976 [inline]
__get_user_pages+0x93e/0x11c0 mm/gup.c:1197
__get_user_pages_locked mm/gup.c:1382 [inline]
__get_user_pages_remote+0x1cd/0x770 mm/gup.c:2007
get_arg_page+0x116/0x330 fs/exec.c:219
copy_string_kernel+0x14d/0x280 fs/exec.c:637
do_execveat_common+0x371/0x6d0 fs/exec.c:1931
do_execve fs/exec.c:2027 [inline]
__do_sys_execve fs/exec.c:2103 [inline]
__se_sys_execve fs/exec.c:2098 [inline]
__x64_sys_execve+0x8e/0xa0 fs/exec.c:2098
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f0a15f64ef7
RSP: 002b:00007ffcbe52a4f8 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 000055e58a29eec8 RCX: 00007f0a15f64ef7
RDX: 000055e58a29ef08 RSI: 000055e58a29eec8 RDI: 000055e58a29ef98
RBP: 000055e58a29ef98 R08: 000055e58a29ef9d R09: 00007ffcbe52ee9c
R10: 00007f0a1615d088 R11: 0000000000000246 R12: 000055e58a29ef08
R13: 00007f0a16112904 R14: 000055e58a29ef08 R15: 0000000000000000
task:kworker/u4:8 state:R running task stack:24160 pid: 4257 ppid: 2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x11b8/0x43b0 kernel/sched/core.c:6376
preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6780
irqentry_exit+0x63/0x70 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:lock_acquire+0x1f2/0x3f0 kernel/locking/lockdep.c:5627
Code: 00 9c 8f 84 24 80 00 00 00 f6 84 24 81 00 00 00 02 0f 85 f6 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 44 3d 00 00 00 00 00 66 43 c7 44 3d 09 00 00 43 c6 44 3d 0b
RSP: 0018:ffffc90003e7f900 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 5dc9b2bc67b60400
RDX: 0000000000000000 RSI: ffffffff8a0b2560 RDI: ffffffff8a59a340
RBP: ffffc90003e7fa20 R08: dffffc0000000000 R09: fffffbfff1ff3419
R10: fffffbfff1ff3419 R11: 1ffffffff1ff3418 R12: ffffffff8c11d9e0
R13: 1ffff920007cff2c R14: 0000000000000246 R15: dffffc0000000000
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:312
rcu_read_lock include/linux/rcupdate.h:739 [inline]
inet_twsk_purge+0x119/0x810 net/ipv4/inet_timewait_sock.c:268
ops_exit_list net/core/net_namespace.c:177 [inline]
cleanup_net+0x77b/0xb00 net/core/net_namespace.c:618
process_one_work+0x863/0x1000 kernel/workqueue.c:2310
worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457
kthread+0x436/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
task:syz.1.211 state:R running task stack:27552 pid: 5050 ppid: 4166 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x11b8/0x43b0 kernel/sched/core.c:6376
preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6780
irqentry_exit+0x63/0x70 kernel/entry/common.c:432
asm_sysvec_reschedule_ipi+0x16/0x20 arch/x86/include/asm/idtentry.h:681
RIP: 0010:rcu_read_lock_sched_held+0x0/0xf0 kernel/rcu/update.c:120
Code: fe fd ff ff e8 f1 07 3e 08 90 e9 9b 7d 1e 00 66 2e 0f 1f 84 00 00 00 00 00 90 e9 5b 80 1e 00 66 2e 0f 1f 84 00 00 00 00 00 90 <55> 48 89 e5 41 57 41 56 53 48 83 e4 e0 48 83 ec 60 65 48 8b 04 25
RSP: 0000:ffffc900031cfac8 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffff88805edb7800 RCX: ffff88805f6c9dc0
RDX: 0000000000000000 RSI: ffffffff8a0b2560 RDI: ffff88805f6c9dc0
RBP: 0000000000000cc0 R08: dffffc0000000000 R09: fffffbfff1ff3419
R10: fffffbfff1ff3419 R11: 1ffffffff1ff3418 R12: dffffc0000000000
R13: 1ffff1100fcc8cfb R14: ffff88805f6c9dc0 R15: dffffc0000000000
task_css include/linux/cgroup.h:496 [inline]
mem_cgroup_from_task+0x49/0x110 mm/memcontrol.c:935
get_mem_cgroup_from_mm+0xaf/0x260 mm/memcontrol.c:988
__mem_cgroup_charge+0x11/0x80 mm/memcontrol.c:6802
mem_cgroup_charge include/linux/memcontrol.h:700 [inline]
wp_page_copy+0x3cf/0x1fd0 mm/memory.c:3078
handle_pte_fault mm/memory.c:4668 [inline]
__handle_mm_fault mm/memory.c:4785 [inline]
handle_mm_fault+0x1eca/0x43c0 mm/memory.c:4883
do_user_addr_fault+0x489/0xc80 arch/x86/mm/fault.c:1357
handle_page_fault arch/x86/mm/fault.c:1445 [inline]
exc_page_fault+0x60/0x100 arch/x86/mm/fault.c:1501
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606
RIP: 0033:0x7f609f16c9fc
RSP: 002b:00007ffc97cc5628 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00007f60a0004720 RCX: 0000000000000000
RDX: 0000000000000b9b RSI: ffffffff81cf4b9b RDI: 0000000000000000
RBP: ffffffff81cf4b9b R08: 00007f609f4bf000 R09: 00007f609f4c1000
R10: 0000000081cf4b9f R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff81cf40da R15: 0000000000000019
task:kworker/1:3 state:R running task stack:25128 pid: 4210 ppid: 2 flags:0x00004000
Workqueue: events_power_efficient gc_worker
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x11b8/0x43b0 kernel/sched/core.c:6376
preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6780
irqentry_exit+0x63/0x70 kernel/entry/common.c:432
asm_sysvec_reschedule_ipi+0x16/0x20 arch/x86/include/asm/idtentry.h:681
RIP: 0010:seqcount_lockdep_reader_access+0x17b/0x1c0 include/linux/seqlock.h:106
Code: f9 4d 85 e4 75 16 e8 74 a7 69 f9 eb 15 e8 6d a7 69 f9 e8 08 d7 92 01 4d 85 e4 74 ea e8 5e a7 69 f9 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3e 00 00 00 00 66 43 c7 44 3e 09 00 00 43 c6 44 3e 0b 00
RSP: 0018:ffffc900030efa20 EFLAGS: 00000293
RAX: ffffffff880e1612 RBX: 0000000000000000 RCX: ffff88806226d940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900030efad0 R08: dffffc0000000000 R09: fffffbfff1ff342c
R10: fffffbfff1ff342c R11: 1ffffffff1ff342b R12: 0000000000000200
R13: ffff888079fea900 R14: 1ffff9200061df44 R15: dffffc0000000000
nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:338 [inline]
gc_worker+0x2e2/0x13a0 net/netfilter/nf_conntrack_core.c:1472
process_one_work+0x863/0x1000 kernel/workqueue.c:2310
worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457
kthread+0x436/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
rcu: rcu_preempt kthread timer wakeup didn't happen for 10621 jiffies! g10233 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=4631
rcu: rcu_preempt kthread starved for 10622 jiffies! g10233 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:27656 pid: 15 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x11b8/0x43b0 kernel/sched/core.c:6376
schedule+0x11b/0x1e0 kernel/sched/core.c:6459
schedule_timeout+0x15c/0x280 kernel/time/timer.c:1914
rcu_gp_fqs_loop+0x29e/0x11b0 kernel/rcu/tree.c:1972
rcu_gp_kthread+0x98/0x350 kernel/rcu/tree.c:2145
kthread+0x436/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 1
CPU: 1 PID: 5047 Comm: syz.4.210 Not tainted 5.15.180-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Call Trace:
dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
nmi_cpu_backtrace+0x397/0x3d0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
rcu_check_gp_kthread_starvation+0x1cd/0x250 kernel/rcu/tree_stall.h:487
print_other_cpu_stall+0x10c8/0x1220 kernel/rcu/tree_stall.h:592
check_cpu_stall kernel/rcu/tree_stall.h:745 [inline]
rcu_pending kernel/rcu/tree.c:3932 [inline]
rcu_sched_clock_irq+0x831/0x1110 kernel/rcu/tree.c:2619
update_process_times+0x193/0x200 kernel/time/timer.c:1818
tick_sched_handle kernel/time/tick-sched.c:254 [inline]
tick_sched_timer+0x37d/0x560 kernel/time/tick-sched.c:1473
__run_hrtimer kernel/time/hrtimer.c:1690 [inline]
__hrtimer_run_queues+0x4fe/0xc40 kernel/time/hrtimer.c:1754
hrtimer_interrupt+0x3bb/0x8d0 kernel/time/hrtimer.c:1816
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
__sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:212 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:156 [inline]
RIP: 0010:wrmsr arch/x86/include/asm/msr.h:263 [inline]
RIP: 0010:native_apic_msr_write+0x35/0x50 arch/x86/include/asm/apic.h:208
Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 c3 89 f6 31 d2 e9 af 12 c8 02 66 2e 0f 1f 84 00 00 00 00 00
RSP: 0018:ffffc9000153fcb0 EFLAGS: 00000246
RAX: 00000000000000f6 RBX: ffffffff8bbaea10 RCX: 000000000000083f
RDX: 0000000000000000 RSI: 00000000000000f6 RDI: 000000000000083f
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed10172267a7
R10: ffffed10172267a7 R11: 1ffff110172267a6 R12: ffff8880b9133b01
R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000020
arch_irq_work_raise+0x82/0xd0 arch/x86/kernel/irq_work.c:31
irq_work_queue+0x95/0x140 kernel/irq_work.c:75
bpf_send_signal_common+0x2b2/0x420 kernel/trace/bpf_trace.c:820
____bpf_send_signal kernel/trace/bpf_trace.c:829 [inline]
bpf_send_signal+0x15/0x20 kernel/trace/bpf_trace.c:827
bpf_prog_7ba5217f62dcd359+0x38/0xd90
bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
__bpf_prog_run include/linux/filter.h:628 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
bpf_trace_run2+0x15b/0x2d0 kernel/trace/bpf_trace.c:1915
__bpf_trace_sys_enter+0x60/0x70 include/trace/events/syscalls.h:18
trace_sys_enter+0x65/0x80 include/trace/events/syscalls.h:18
syscall_trace_enter+0x115/0x180 kernel/entry/common.c:77
do_syscall_64+0x24/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f9ba652eb39
Code: 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 90 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 c7 c0 0f 00 00 00 0f 05 <0f> 1f 80 00 00 00 00 48 81 ec 48 01 00 00 49 89 d0 64 48 8b 04 25
RSP: 002b:00007f9ba43f9b40 EFLAGS: 00000246 ORIG_RAX: 000000000000000f
RAX: ffffffffffffffda RBX: 00007f9ba67b9fa8 RCX: 00007f9ba652eb39
RDX: 00007f9ba43f9b40 RSI: 00007f9ba43f9c70 RDI: 0000000000000011
RBP: 00007f9ba67b9fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9ba67b9fac
R13: 0000000000000000 R14: 00007ffd6e9709f0 R15: 00007ffd6e970ad8