rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (1 GPs behind) idle=3cc4/1/0x4000000000000000 softirq=10459/10461 fqs=226
	(t=10500 jiffies g=9029 q=228 ncpus=2)
rcu: rcu_preempt kthread starved for 10046 jiffies! g9029 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R  running task     stack:27920 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5244 [inline]
 __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561
 schedule+0xb9/0x180 kernel/sched/core.c:6637
 schedule_timeout+0x15c/0x280 kernel/time/timer.c:1965
 rcu_gp_fqs_loop+0x2f2/0x1310 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0x95/0x380 kernel/rcu/tree.c:1905
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
NMI backtrace for cpu 1 skipped: idling at default_idle+0xb/0x10 arch/x86/kernel/process.c:741
CPU: 0 PID: 4537 Comm: syz.2.39 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:should_resched arch/x86/include/asm/preempt.h:103 [inline]
RIP: 0010:__local_bh_enable_ip+0x132/0x1b0 kernel/softirq.c:428
Code: 8a e8 e2 f6 c8 08 65 66 8b 05 6a 2e b5 7e 66 85 c0 75 54 bf 01 00 00 00 e8 7b 44 09 00 e8 96 ba 38 00 fb 65 8b 05 96 fd b3 7e <85> c0 75 05 e8 e5 0e b2 ff 48 c7 04 24 0e 36 e0 45 4b c7 04 37 00
RSP: 0018:ffffc9000514fc20 EFLAGS: 00000282
RAX: 0000000080000000 RBX: 0000000000000200 RCX: cc3dd9b246bf5400
RDX: dffffc0000000000 RSI: ffffffff8a8c0300 RDI: ffffffff8adefae0
RBP: ffffc9000514fcb0 R08: dffffc0000000000 R09: ffffed1027fc4f81
R10: ffffed1027fc4f81 R11: 1ffff11027fc4f80 R12: ffffffff812f1766
R13: 1ffff92000a29fff R14: dffffc0000000000 R15: 1ffff92000a29f84
FS:  00005555908aa500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000054 CR3: 000000007b98a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 handle_signal arch/x86/kernel/signal.c:844 [inline]
 arch_do_signal_or_restart+0xe9e/0x1230 arch/x86/kernel/signal.c:873
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f67285b7320
Code: 83 c0 16 83 e0 f7 74 12 50 48 8d 3d 4a 3e 08 00 e8 f5 8f f8 ff 0f 1f 44 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 <83> ff 21 74 0b c3 66 2e 0f 1f 84 00 00 00 00 00 55 53 48 89 f3 48
RSP: 002b:00007ffdd62dea38 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000018290 RCX: 00007f672858ebe9
RDX: 00007ffdd62dea40 RSI: 00007ffdd62deb70 RDI: 0000000000000021
RBP: 0000000000000032 R08: 003912dbeb8dadb0 R09: 00000018d62df2bf
R10: 00007ffdd62df0c0 R11: 0000000000000246 R12: 00007f67287c609c
R13: 00007ffdd62df0c0 R14: 00000000000182c2 R15: 00007ffdd62df0e0
 </TASK>