rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (0 ticks this GP) idle=efc4/1/0x4000000000000000 softirq=24339/24339 fqs=0
rcu: 	(detected by 0, t=10506 jiffies, g=19389, q=352 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6614 Comm: dhcpcd-run-hook Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:advance_sched+0x1ed/0xc80 net/sched/sch_taprio.c:935
Code: c0 be ff ff ff ff e8 a2 39 d9 01 89 c3 31 ff 89 c6 e8 47 8b 73 f8 85 db 0f 84 68 06 00 00 e8 0a 87 73 f8 eb 05 e8 03 87 73 f8 <49> 8d 5c 24 f8 48 89 d9 48 c1 e9 03 48 b8 00 00 00 00 00 fc ff df
RSP: 0018:ffffc90000a08c70 EFLAGS: 00000006
RAX: ffffffff894be146 RBX: 0000000000000001 RCX: ffff88802bf61e40
RDX: 0000000000010000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200014117c R12: ffff888021748300
R13: ffff888021748000 R14: ffff8880217482f0 R15: ffff88805c7e9c00
FS:  00007f23a9a10c80(0000) GS:ffff888126472000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555822e6b048 CR3: 00000000727ba000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:1777 [inline]
 __hrtimer_run_queues+0x518/0xc10 kernel/time/hrtimer.c:1841
 hrtimer_interrupt+0x457/0xa90 kernel/time/hrtimer.c:1903
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1045 [inline]
 __sysvec_apic_timer_interrupt+0xfe/0x3c0 arch/x86/kernel/apic/apic.c:1062
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1056
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:get_current arch/x86/include/asm/current.h:25 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:216
Code: 8b 3d 88 ad b7 0b 48 89 de 5b e9 17 80 5a 00 cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 04 24 <65> 48 8b 0c 25 08 e0 4a 92 65 8b 15 cc 77 8b 10 81 e2 00 01 ff 00
RSP: 0018:ffffc90003617898 EFLAGS: 00000246
RAX: ffffffff8133452a RBX: 00007f23a9bcab0a RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8d738959 RDI: 00007f23a9bcab0a
RBP: 0000000000000001 R08: 0000000000000022 R09: ffffffff81736e51
R10: ffffc90003617958 R11: ffffffff81abdcc0 R12: ffff88802bf61e40
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920006c2f2a
 in_gate_area_no_mm+0xa/0x60 arch/x86/entry/vsyscall/vsyscall_64.c:331
 is_kernel_text include/linux/kallsyms.h:31 [inline]
 core_kernel_text kernel/extable.c:68 [inline]
 kernel_text_address+0x29/0xe0 kernel/extable.c:99
 __kernel_text_address+0x9/0x30 kernel/extable.c:79
 unwind_get_return_address+0x49/0x90 arch/x86/kernel/unwind_orc.c:385
 arch_stack_walk+0xf8/0x150 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3a/0x80 mm/kasan/common.c:78
 kasan_save_free_info+0x42/0x50 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x58/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2540 [inline]
 slab_free mm/slub.c:6670 [inline]
 kmem_cache_free+0x18f/0x610 mm/slub.c:6781
 vfs_fstatat+0x11e/0x170 fs/stat.c:376
 __do_sys_newfstatat fs/stat.c:542 [inline]
 __se_sys_newfstatat fs/stat.c:536 [inline]
 __x64_sys_newfstatat+0x112/0x190 fs/stat.c:536
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x86/0x630 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f23a9bcab0a
Code: 48 8b 15 f1 f2 0d 00 f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 41 89 ca b8 06 01 00 00 0f 05 <3d> 00 f0 ff ff 77 07 31 c0 c3 0f 1f 40 00 48 8b 15 b9 f2 0d 00 f7
RSP: 002b:00007ffe832cdcc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f23a9bcab0a
RDX: 00007ffe832cdd28 RSI: 0000555822e6b0e8 RDI: 00000000ffffff9c
RBP: 00007ffe832cde88 R08: 00007ffe832d1ea9 R09: 0000555822e5ac30
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10505 jiffies! g19389 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=9254
rcu: rcu_preempt kthread starved for 10506 jiffies! g19389 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:28000 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0x1497/0x4f60 kernel/sched/core.c:6863
 __schedule_loop kernel/sched/core.c:6945 [inline]
 schedule+0x161/0x360 kernel/sched/core.c:6960
 schedule_timeout+0x127/0x260 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x2fd/0x1520 kernel/rcu/tree.c:2083
 rcu_gp_kthread+0x95/0x380 kernel/rcu/tree.c:2285
 kthread+0x70d/0x890 kernel/kthread.c:463
 ret_from_fork+0x508/0xa20 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>