rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 1, t=10502 jiffies, g=11633, q=168)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294956961-4294946459), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g11633 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:27848 pid:   15 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5030 [inline]
 __schedule+0x11b8/0x43b0 kernel/sched/core.c:6376
 schedule+0x11b/0x1e0 kernel/sched/core.c:6459
 schedule_timeout+0x15c/0x280 kernel/time/timer.c:1914
 rcu_gp_fqs_loop+0x29e/0x11b0 kernel/rcu/tree.c:1972
 rcu_gp_kthread+0x98/0x350 kernel/rcu/tree.c:2145
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </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 PID: 5505 Comm: syz-executor Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:lock_is_held_type+0x5/0x190 kernel/locking/lockdep.c:5651
Code: d6 48 c7 c7 60 14 0b 8a 48 c7 c6 a0 14 0b 8a e8 21 38 f5 ff 0f 0b eb bf e8 98 fd ff ff 0f 1f 84 00 00 00 00 00 55 41 57 41 56 <41> 55 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24
RSP: 0018:ffffc900033efa20 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 1ffff9200067df50 RCX: ffff88802a435940
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff8c11c3c0
RBP: ffffc900033efb60 R08: dffffc0000000000 R09: ffffc900033efc20
R10: fffff5200067df88 R11: 1ffff9200067df84 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffffffff8a12d1d4 R15: 0000000000000000
FS:  00007fc76730b6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc76730ad80 CR3: 0000000074ff7000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_is_held include/linux/lockdep.h:287 [inline]
 ___might_sleep+0xa3/0x600 kernel/sched/core.c:9605
 __might_fault+0x6b/0x110 mm/memory.c:5354
 clear_rseq_cs kernel/rseq.c:242 [inline]
 rseq_ip_fixup kernel/rseq.c:276 [inline]
 __rseq_handle_notify_resume+0x516/0xf50 kernel/rseq.c:314
 rseq_handle_notify_resume include/linux/sched.h:2202 [inline]
 rseq_signal_deliver include/linux/sched.h:2211 [inline]
 setup_rt_frame arch/x86/kernel/signal.c:769 [inline]
 handle_signal arch/x86/kernel/signal.c:824 [inline]
 arch_do_signal_or_restart+0x27c/0x1300 arch/x86/kernel/signal.c:869
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fc767f89ee7
Code: 14 25 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89
RSP: 002b:00007fc76730b178 EFLAGS: 00000246
RAX: 00000000000000ca RBX: 00007fc7680b8f88 RCX: 00007fc767f89ee9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fc7680b8f88
RBP: 00007fc7680b8f80 R08: 00007fc76730b6c0 R09: 00007fc76730b6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc7680b8f8c
R13: 000000000000000b R14: 00007ffc5c98db20 R15: 00007ffc5c98dc08
 </TASK>
hrtimer: interrupt took 540022780 ns