rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 1, t=10503 jiffies, g=23025, q=587 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10501 (4294965334-4294954833), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10501 jiffies! g23025 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R  running task     stack:26504 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x1b9a/0x5250 kernel/sched/core.c:6769
 __schedule_loop kernel/sched/core.c:6847 [inline]
 schedule+0x163/0x360 kernel/sched/core.c:6862
 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>
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: 7761 Comm: syz.3.549 Not tainted 6.15.0-rc1-next-20250409-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:get_current arch/x86/include/asm/current.h:25 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:216
Code: 8b 3d e4 e0 b6 0c 48 89 de 5b e9 33 c7 5e 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0c 25 08 f0 69 93 65 8b 15 68 5c a6 11 81 e2 00 01 ff 00
RSP: 0018:ffffc90000007d18 EFLAGS: 00000002
RAX: ffffffff81b107b6 RBX: 0000000000000001 RCX: ffffffff81b1077d
RDX: ffff8880263d3c00 RSI: ffffffff8ca1e6a0 RDI: ffffffff8ca1e660
RBP: 0000000000000001 R08: ffffffff81b107a3 R09: 1ffffffff20c074e
R10: dffffc0000000000 R11: fffffbfff20c074f R12: 1ffff110170c4f83
R13: dffffc0000000000 R14: ffff8880287df340 R15: ffff8880b8627bc0
FS:  00007f683df8c6c0(0000) GS:ffff888124f81000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000003c80 CR3: 00000000605d8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 trace_hrtimer_cancel include/trace/events/timer.h:317 [inline]
 debug_deactivate+0x96/0x220 kernel/time/hrtimer.c:491
 __run_hrtimer kernel/time/hrtimer.c:1729 [inline]
 __hrtimer_run_queues+0x310/0xd40 kernel/time/hrtimer.c:1825
 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1887
 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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd9/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 2b 00 74 08 4c 89 f7 e8 cd 08 f8 f5 f6 44 24 21 02 75 55 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 12 02 5b f5 65 8b 05 eb 2c 34 07 85 c0 74 46 48 c7 04 24 0e 36
RSP: 0018:ffffc900046c7ba0 EFLAGS: 00000206
RAX: a9f3f91cf2daec00 RBX: 1ffff920008d8f78 RCX: 0000000000000007
RDX: 0000000000000007 RSI: ffffffff8e6aa9ec RDI: 0000000000000001
RBP: ffffc900046c7c30 R08: ffffffff90603a77 R09: 1ffffffff20c074e
R10: dffffc0000000000 R11: fffffbfff20c074f R12: 1ffff920008d8f74
R13: dffffc0000000000 R14: ffffc900046c7bc0 R15: 0000000000000246
 clock_was_set+0x690/0x820 kernel/time/hrtimer.c:972
 do_settimeofday64+0x36a/0x610 kernel/time/timekeeping.c:1381
 __do_sys_clock_settime kernel/time/posix-timers.c:1140 [inline]
 __se_sys_clock_settime kernel/time/posix-timers.c:1124 [inline]
 __x64_sys_clock_settime+0x240/0x280 kernel/time/posix-timers.c:1124
 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: 0033:0x7f683d18d169
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:00007f683df8c038 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3
RAX: ffffffffffffffda RBX: 00007f683d3a6080 RCX: 00007f683d18d169
RDX: 0000000000000000 RSI: 0000200000003c80 RDI: 0000000000000000
RBP: 00007f683d20e730 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f683d3a6080 R15: 00007fff0f7a5e68
 </TASK>