rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (2 ticks this GP) idle=d034/1/0x4000000000000000 softirq=12421/12421 fqs=0
rcu: 	(detected by 1, t=10502 jiffies, g=9957, q=909 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5217 Comm: udevd Not tainted 6.12.0-rc6-syzkaller-00110-gff7afaeca1a1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:check_preemption_disabled+0x42/0x120 lib/smp_processor_id.c:55
Code: 08 65 8b 1d 5c 82 3c 74 65 8b 05 51 82 3c 74 a9 ff ff ff 7f 74 26 65 48 8b 04 25 28 00 00 00 48 3b 44 24 08 0f 85 ce 00 00 00 <89> d8 48 83 c4 10 5b 41 5c 41 5e 41 5f c3 cc cc cc cc 48 c7 04 24
RSP: 0018:ffffc90000007c10 EFLAGS: 00000046
RAX: 7d9453287d9d2400 RBX: 0000000000000000 RCX: ffff88807e21bc00
RDX: ffff88807e21bc00 RSI: ffffffff8c0adc40 RDI: ffffffff8c6109a0
RBP: 0000000000000002 R08: ffffffff89cc9f9b R09: fffff52000000f80
R10: dffffc0000000000 R11: fffff52000000f80 R12: 0000000000000046
R13: ffff88807e21bc00 R14: 00000000ffffffff R15: ffff8880216e1300
FS:  00007feb77a90c80(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f7fc55b8 CR3: 000000007d602000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline]
 lock_is_held_type+0x101/0x190 kernel/locking/lockdep.c:5898
 lock_is_held include/linux/lockdep.h:249 [inline]
 advance_sched+0xcd/0xca0 net/sched/sch_taprio.c:925
 __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
 __hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1755
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1817
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:filldir64+0x29b/0x690
Code: df 4c 89 f6 e8 c6 05 7e ff 4c 39 f3 0f 82 5f 02 00 00 48 39 eb 0f 87 56 02 00 00 0f 01 cb 0f ae e8 48 8b 44 24 58 49 89 46 08 <48> 8b 4c 24 18 48 8b 44 24 50 48 89 01 48 8b 44 24 20 8b 54 24 34
RSP: 0018:ffffc90003d47c38 EFLAGS: 00040297
RAX: 0000000000000000 RBX: 0000559bb2ceb168 RCX: ffff88807e21bc00
RDX: 0000000000000000 RSI: 0000559bb2ceb150 RDI: 0000559bb2ceb168
RBP: 00007fffffffefff R08: ffffffff8216d6fa R09: 0000000000000004
R10: 0000000000000002 R11: ffffffff8216d480 R12: ffffffff8c1be460
R13: ffffc90003d47e50 R14: 0000559bb2ceb150 R15: 0000000000000001
 dir_emit_dot include/linux/fs.h:3667 [inline]
 dir_emit_dots include/linux/fs.h:3678 [inline]
 kernfs_fop_readdir+0x185/0x820 fs/kernfs/dir.c:1850
 iterate_dir+0x571/0x800 fs/readdir.c:108
 __do_sys_getdents64 fs/readdir.c:407 [inline]
 __se_sys_getdents64+0x1d3/0x4a0 fs/readdir.c:392
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feb776f9910
Code: 87 43 04 ff c8 7e 08 48 89 ef e8 4d 0e fc ff 4c 89 e0 5b 5d 41 5c c3 b8 ff ff ff 7f 48 39 c2 48 0f 47 d0 b8 d9 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 10 48 8b 15 e9 74 0f 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffd6706fa78 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 0000559bb2ceb120 RCX: 00007feb776f9910
RDX: 0000000000008000 RSI: 0000559bb2ceb150 RDI: 000000000000000c
RBP: 0000559bb2ceb124 R08: 0000559bb2ceb120 R09: 0000000000000002
R10: 0000000000000812 R11: 0000000000000293 R12: 0000559bb2cc5eb0
R13: fffffffffffffe60 R14: 0000000000000016 R15: 0000559bb2ceb150
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g9957 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=4894
rcu: rcu_preempt kthread starved for 10502 jiffies! g9957 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:25920 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5328 [inline]
 __schedule+0x184f/0x4c30 kernel/sched/core.c:6690
 __schedule_loop kernel/sched/core.c:6767 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6782
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2615
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>