rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (2 ticks this GP) idle=9a24/1/0x4000000000000000 softirq=18890/18890 fqs=0
rcu: 	(detected by 1, t=10502 jiffies, g=12009, q=1290 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6129 Comm: dhcpcd-run-hook Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:trace_hrtimer_expire_entry include/trace/events/timer.h:-1 [inline]
RIP: 0010:__run_hrtimer kernel/time/hrtimer.c:1774 [inline]
RIP: 0010:__hrtimer_run_queues+0x47e/0xc60 kernel/time/hrtimer.c:1841
Code: 3d 67 1c af 0d 41 0f 92 c7 40 0f 92 c6 bf 02 00 00 00 e8 a5 0f 12 00 45 84 ff 74 10 e8 ab ab f8 ff 84 c0 74 0e e8 92 0c 12 00 <eb> 19 e8 8b 0c 12 00 eb 12 80 3d 20 19 99 0d 01 0f 85 9d 02 00 00
RSP: 0018:ffffc90000007d40 EFLAGS: 00000006
RAX: ffffffff81ac69ee RBX: ffff8880b8827c88 RCX: ffff88802d265ac0
RDX: 0000000000010000 RSI: ffffffff8b9ec4c0 RDI: ffffffff8b9ec480
RBP: ffffc90000007e90 R08: ffffffff8f5b8637 R09: 1ffffffff1eb70c6
R10: dffffc0000000000 R11: fffffbfff1eb70c7 R12: ffff888076f1e340
R13: 0000000000000000 R14: ffffffff895a8f50 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff88812639b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0c88700286 CR3: 000000006bab6000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1903
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1041 [inline]
 __sysvec_apic_timer_interrupt+0x108/0x410 arch/x86/kernel/apic/apic.c:1058
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1052
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:unwind_next_frame+0x8a/0x2390 arch/x86/kernel/unwind_orc.c:-1
Code: 89 ef e8 b9 c3 b0 00 4d 8b 7e 38 4d 89 f4 49 c1 ec 03 41 0f b6 04 2c 84 c0 0f 85 de 1b 00 00 41 8b 06 85 c0 0f 84 32 02 00 00 <89> 84 24 84 00 00 00 4c 89 bc 24 90 00 00 00 e8 22 72 33 00 4c 8d
RSP: 0018:ffffc900035870d8 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffffff8b32069a RCX: e5ad2d60e15c8400
RDX: dffffc0000000000 RSI: ffffffff8b32069a RDI: ffffc900035871a8
RBP: dffffc0000000000 R08: ffffc90003587270 R09: 000000000000000c
R10: ffffc900035871f8 R11: ffffffff81aaf070 R12: 1ffff920006b0e35
R13: ffffc900035871e0 R14: ffffc900035871a8 R15: ffffc90003587ef0
 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
 kasan_save_stack+0x3e/0x60 mm/kasan/common.c:47
 kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:548
 __call_rcu_common kernel/rcu/tree.c:3123 [inline]
 call_rcu+0x157/0x9c0 kernel/rcu/tree.c:3243
 slab_free_hook mm/slub.c:2386 [inline]
 slab_free mm/slub.c:4695 [inline]
 kmem_cache_free+0x309/0x400 mm/slub.c:4797
 exit_mmap+0x53f/0xb50 mm/mmap.c:1305
 __mmput+0x118/0x430 kernel/fork.c:1130
 exec_mmap+0x6ac/0x7d0 fs/exec.c:901
 begin_new_exec+0x12d6/0x2160 fs/exec.c:1156
 load_elf_binary+0x998/0x2740 fs/binfmt_elf.c:1010
 search_binary_handler fs/exec.c:1670 [inline]
 exec_binprm fs/exec.c:1702 [inline]
 bprm_execve+0x999/0x1450 fs/exec.c:1754
 do_execveat_common+0x510/0x6a0 fs/exec.c:1860
 do_execve fs/exec.c:1934 [inline]
 __do_sys_execve fs/exec.c:2010 [inline]
 __se_sys_execve fs/exec.c:2005 [inline]
 __x64_sys_execve+0x94/0xb0 fs/exec.c:2005
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0c88646107
Code: Unable to access opcode bytes at 0x7f0c886460dd.
RSP: 002b:00007ffc3a254c58 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 00005611183ca078 RCX: 00007f0c88646107
RDX: 00005611183ca0a0 RSI: 00005611183ca078 RDI: 00005611183ca130
RBP: 00005611183ca130 R08: 00007ffc3a25aeb9 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 00005611183ca0a0
R13: 00007f0c8880be8b R14: 00005611183ca0a0 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g12009 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=5832
rcu: rcu_preempt kthread starved for 10502 jiffies! g12009 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
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:27320 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5325 [inline]
 __schedule+0x1798/0x4cc0 kernel/sched/core.c:6929
 __schedule_loop kernel/sched/core.c:7011 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:7026
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2083
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2285
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x436/0x7d0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>