rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (10500 ticks this GP) idle=223c/1/0x4000000000000000 softirq=21648/21648 fqs=0
rcu: 	(t=10501 jiffies g=17605 q=257 ncpus=2)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10500 jiffies! g17605 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=7332
rcu: rcu_preempt kthread starved for 10501 jiffies! g17605 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:27672 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5290 [inline]
 __schedule+0x14db/0x5030 kernel/sched/core.c:6902
 __schedule_loop kernel/sched/core.c:6984 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6999
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x11b0 kernel/rcu/tree.c:2095
 rcu_gp_kthread+0x9b/0x2d0 kernel/rcu/tree.c:2297
 kthread+0x389/0x480 kernel/kthread.c:467
 ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6502 Comm: rm Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:rcu_is_watching+0x70/0xb0 kernel/rcu/tree.c:754
Code: c3 58 a7 a3 92 49 03 1e 48 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 75 34 8b 03 65 ff 0d 29 42 fb 10 74 11 83 e0 04 c1 e8 02 5b <41> 5e 41 5f e9 07 50 ba 09 cc e8 31 49 8c ff eb e8 48 c7 c7 40 a5
RSP: 0018:ffffc90000007bf0 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000080010003
RDX: 0000000000000000 RSI: ffffffff8be09740 RDI: ffffffff8be09700
RBP: ffffffff849a0e7d R08: 0000000000000001 R09: 0000000000000000
R10: ffff8880783d3300 R11: ffffed100f07a663 R12: 0000000000000000
R13: ffffffff99d62c98 R14: ffffffff8dbc4dd0 R15: dffffc0000000000
FS:  00007fddea2cec80(0000) GS:ffff888125bf9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055fb03748008 CR3: 00000000769a6000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 trace_lock_acquire include/trace/events/lock.h:24 [inline]
 lock_acquire+0x5f/0x340 kernel/locking/lockdep.c:5831
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:132 [inline]
 _raw_spin_lock_irqsave+0x40/0x60 kernel/locking/spinlock.c:162
 debug_object_deactivate+0x6d/0x360 lib/debugobjects.c:873
 debug_hrtimer_deactivate kernel/time/hrtimer.c:451 [inline]
 debug_deactivate+0x1d/0x1e0 kernel/time/hrtimer.c:491
 __run_hrtimer kernel/time/hrtimer.c:1753 [inline]
 __hrtimer_run_queues+0x2b0/0xc30 kernel/time/hrtimer.c:1849
 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1911
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1045 [inline]
 __sysvec_apic_timer_interrupt+0x102/0x3e0 arch/x86/kernel/apic/apic.c:1062
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1056
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:strlen+0x2e/0x70 lib/string.c:420
Code: 41 57 41 56 41 54 53 48 c7 c0 ff ff ff ff 49 be 00 00 00 00 00 fc ff df 48 89 fb 49 89 c7 48 89 d8 48 c1 e8 03 42 0f b6 04 30 <84> c0 75 11 48 ff c3 49 8d 47 01 42 80 7c 3f 01 00 75 de eb 19 89
RSP: 0018:ffffc900030478f8 EFLAGS: 00000a07
RAX: 0000000000000005 RBX: ffffffff8b9c08a4 RCX: 000000008b9c0803
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8b9c08a0
RBP: ffffc90003047a30 R08: ffff88802cb3bc80 R09: 0000000000000002
R10: 0000000000000010 R11: 0000000000000000 R12: ffff888032c24028
R13: 1ffff92000608f28 R14: dffffc0000000000 R15: 0000000000000003
 __fortify_strlen include/linux/fortify-string.h:266 [inline]
 tomoyo_get_local_path+0x5cf/0x810 security/tomoyo/realpath.c:209
 tomoyo_realpath_from_path+0x493/0x5d0 security/tomoyo/realpath.c:-1
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path_perm+0x213/0x4b0 security/tomoyo/file.c:827
 security_inode_getattr+0x12f/0x330 security/security.c:1869
 vfs_getattr fs/stat.c:259 [inline]
 vfs_fstat fs/stat.c:281 [inline]
 __do_sys_newfstat fs/stat.c:551 [inline]
 __se_sys_newfstat fs/stat.c:546 [inline]
 __x64_sys_newfstat+0xfc/0x200 fs/stat.c:546
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fddea488ad7
Code: 73 01 c3 48 8b 0d 21 f3 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 05 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 8b 15 f1 f2 0d 00 f7 d8 64 89 02 b8
RSP: 002b:00007ffe8d24d038 EFLAGS: 00000297 ORIG_RAX: 0000000000000005
RAX: ffffffffffffffda RBX: 000055fb037482a0 RCX: 00007fddea488ad7
RDX: 00007fddea566ea0 RSI: 00007ffe8d24d040 RDI: 0000000000000003
RBP: 00007fddea566ff0 R08: 00007fddea568ac0 R09: 0000000000000080
R10: 0000000000000004 R11: 0000000000000297 R12: 00007ffe8d24d1a8
R13: 0000000000000000 R14: 00007fddea36a4d0 R15: 0000000000000000
 </TASK>
CPU: 1 UID: 0 PID: 6503 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:csd_lock_wait kernel/smp.c:342 [inline]
RIP: 0010:smp_call_function_many_cond+0xcca/0x1260 kernel/smp.c:877
Code: 89 ee 83 e6 01 31 ff e8 b4 9a 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 5f 96 0b 00 eb 38 f3 90 42 0f b6 04 2b <84> c0 75 11 41 f7 04 24 01 00 00 00 74 1e e8 43 96 0b 00 eb e4 44
RSP: 0018:ffffc90003447ac0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 1ffff110170c85c1 RCX: ffff88802cb39e40
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003447bf0 R08: ffffffff8fa2d9f7 R09: 1ffffffff1f45b3e
R10: dffffc0000000000 R11: ffffffff8171cfa0 R12: ffff8880b8642e08
R13: dffffc0000000000 R14: ffff8880b873bd80 R15: 0000000000000000
FS:  00007f6fc1bcf6c0(0000) GS:ffff888125cf9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6fc1bcef98 CR3: 00000000761f8000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 clock_was_set+0x709/0x7c0 kernel/time/hrtimer.c:977
 do_settimeofday64+0x3cb/0x5a0 kernel/time/timekeeping.c:1460
 __do_sys_clock_settime kernel/time/posix-timers.c:1124 [inline]
 __se_sys_clock_settime kernel/time/posix-timers.c:1108 [inline]
 __x64_sys_clock_settime+0x24f/0x290 kernel/time/posix-timers.c:1108
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6fc0d8ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6fc1bcf038 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3
RAX: ffffffffffffffda RBX: 00007f6fc0fb6090 RCX: 00007f6fc0d8ebe9
RDX: 0000000000000000 RSI: 0000200000000040 RDI: 0000000000000000
RBP: 00007f6fc0e11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6fc0fb6128 R14: 00007f6fc0fb6090 R15: 00007ffcf8c07f48
 </TASK>