rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 ticks this GP) idle=4504/1/0x4000000000000000 softirq=61285/61285 fqs=0
rcu: 	(detected by 0, t=10502 jiffies, g=56485, q=100 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 13303 Comm: syz-executor Not tainted 6.14.0-syzkaller-12508-g92b71befc349 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:__asan_memset+0x27/0x50 mm/kasan/shadow.c:87
Code: 90 90 90 f3 0f 1e fa 55 41 56 53 48 89 d3 41 89 f6 48 89 fd 48 8b 4c 24 18 48 89 d6 ba 01 00 00 00 e8 5d e6 ff ff 84 c0 74 12 <48> 89 ef 44 89 f6 48 89 da 5b 41 5e 5d e9 17 1d fd 09 31 c0 5b 41
RSP: 0018:ffffc90000a08cb8 EFLAGS: 00000002
RAX: ffffffff8c239301 RBX: 0000000000000018 RCX: ffffffff8c239380
RDX: 0000000000000001 RSI: 0000000000000018 RDI: ffff88807f30f340
RBP: ffff88807f30f340 R08: ffff88807f30f357 R09: 1ffff1100fe61e6a
R10: dffffc0000000000 R11: ffffed100fe61e6b R12: ffff8880b8727810
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88807f30f340
FS:  000055557765a500(0000) GS:ffff8881250cf000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe8381a7bac CR3: 0000000049cde000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rb_link_node include/linux/rbtree.h:63 [inline]
 rb_add_cached include/linux/rbtree.h:182 [inline]
 timerqueue_add+0x200/0x290 lib/timerqueue.c:40
 __run_hrtimer kernel/time/hrtimer.c:1808 [inline]
 __hrtimer_run_queues+0x6d6/0xd40 kernel/time/hrtimer.c:1855
 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1917
 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:__x64_sys_clock_nanosleep+0x0/0xb0 kernel/time/posix-timers.c:1384
Code: 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 a8 1d 75 0a 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 41 57 41 56 41 55 41 54 53 48 89 fb 49 bd 00 00 00 00
RSP: 0018:ffffc90004b3ff08 EFLAGS: 00000246
RAX: 6bd4846502b67900 RBX: ffffc90004b3ff10 RCX: ffffffff81cb352c
RDX: 0000000000000000 RSI: 00000000000000e6 RDI: ffffc90004b3ff58
RBP: ffffc90004b3ff48 R08: ffffffff905e9677 R09: 1ffffffff20bd2ce
R10: dffffc0000000000 R11: fffffbfff20bd2cf R12: ffff8880266a3c00
R13: 0000000000000000 R14: ffffc90004b3ff58 R15: 00000000000000e6
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2df35bfa25
Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 f6 54 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 4f 55 ff ff 48 8b 04 24 48 83 c4 28 f7 d8
RSP: 002b:00007fff6327ec60 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 000000000000003a RCX: 00007f2df35bfa25
RDX: 00007fff6327eca0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fff6327ed0c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000001388
R13: 00000000000927c0 R14: 00000000000d7e7d R15: 00007fff6327ed60
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g56485 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=60514
rcu: rcu_preempt kthread starved for 10502 jiffies! g56485 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:26520 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x1b33/0x51f0 kernel/sched/core.c:6767
 __schedule_loop kernel/sched/core.c:6845 [inline]
 schedule+0x163/0x360 kernel/sched/core.c:6860
 schedule_timeout+0x15b/0x2b0 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x2e1/0x1340 kernel/rcu/tree.c:2046
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2248
 kthread+0x7b7/0x940 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>