rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 1, t=10502 jiffies, g=37477, q=7)
rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4295021512-4295011009), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10504 jiffies! g37477 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:27120 pid:   15 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x11ef/0x43c0 kernel/sched/core.c:6395
 schedule+0x11b/0x1e0 kernel/sched/core.c:6478
 schedule_timeout+0x184/0x2d0 kernel/time/timer.c:2117
 rcu_gp_fqs_loop+0x2be/0x11d0 kernel/rcu/tree.c:1972
 rcu_gp_kthread+0x9b/0x370 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: 9567 Comm: syz.7.914 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:memset_erms+0xb/0x10 arch/x86/lib/memset_64.S:65
Code: 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 f3 aa <4c> 89 c8 c3 90 49 89 fa 40 0f b6 ce 48 b8 01 01 01 01 01 01 01 01
RSP: 0018:ffffc9000360fc18 EFLAGS: 00000202
RAX: ffffffff814c6800 RBX: 00007ffdba581350 RCX: 0000000000000000
RDX: 0000000000000018 RSI: 0000000000000000 RDI: ffffc9000360fc78
RBP: ffffc9000360fcf0 R08: ffffc9000360fc77 R09: ffffc9000360fc60
R10: dffffc0000000000 R11: fffff520006c1f8f R12: 1ffff920006c1fa8
R13: dffffc0000000000 R14: ffffc9000360fc60 R15: 1ffff920006c1f88
FS:  0000555578098500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ee1dff8 CR3: 00000000617f4000 CR4: 00000000003506f0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000002
DR3: ffffffffefffff15 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 restore_altstack+0x98/0x380 kernel/signal.c:4251
 __ia32_sys_rt_sigreturn+0x619/0x760 arch/x86/kernel/signal.c:677
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f4484e0d320
Code: 0f 11 45 00 4c 89 e6 eb 09 90 48 8b 4b 08 48 83 c3 08 48 39 d1 72 f3 48 8d 46 f8 48 8b 76 f8 48 39 f2 73 13 66 0f 1f 44 00 00 <48> 8b 70 f8 48 83 e8 08 48 39 f2 72 f3 48 39 c3 73 3e 48 89 33 48
RSP: 002b:00007ffdba5818d0 EFLAGS: 00000287
RAX: 00007f44846b5100 RBX: 00007f44846b2db8 RCX: ffffffff81aec67c
RDX: ffffffff81aec5dc RSI: ffffffff81aec67c RDI: 00007f44846b39a8
RBP: 00007f44846ae1a0 R08: 00007f44851a0000 R09: 00007f44851b6128
R10: 0000000000000001 R11: 0000000000000008 R12: 00007f44846b91b0
R13: 000000000000001c R14: 0000000000001602 R15: 0000000000000001
 </TASK>