rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 1, t=10502 jiffies, g=8689, q=45 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294956075-4294945573), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g8689 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:27656 pid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0x1553/0x45a0 kernel/sched/core.c:6700
 schedule+0xbd/0x170 kernel/sched/core.c:6774
 schedule_timeout+0x188/0x2d0 kernel/time/timer.c:2168
 rcu_gp_fqs_loop+0x313/0x1590 kernel/rcu/tree.c:1667
 rcu_gp_kthread+0x9d/0x3b0 kernel/rcu/tree.c:1866
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </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: 5778 Comm: syz-executor303 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:get_signal+0xf97/0x13f0 kernel/signal.c:2804
Code: e9 46 fe ff ff e8 f9 2f 32 00 e9 e2 00 00 00 e8 ef 2f 32 00 eb 70 e8 e8 2f 32 00 45 31 ed e9 5b 02 00 00 e8 db 2f 32 00 eb 5c <ba> 20 00 00 00 48 8b 7c 24 50 48 89 ee e8 87 6e 8a 00 48 8d 5d 08
RSP: 0018:ffffc900045ffc88 EFLAGS: 00000012
RAX: 0000000000000002 RBX: 0000000000000020 RCX: 0000000000000007
RDX: ffffffff8154e6b2 RSI: ffffffff8cfdaa10 RDI: 00007fd3e5716330
RBP: ffff88802c21f398 R08: ffff8880741e1e00 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000000 R12: 1ffff11005843e73
R13: 0000000000000021 R14: dffffc0000000000 R15: 00007fd3e5716330
FS:  00007fd3e56c96c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000006b000 CR3: 0000000075f1c000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 arch_do_signal_or_restart+0xc2/0x800 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
 do_syscall_64+0x61/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd3e56f1089
Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 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 d0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd3e56c9218 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007fd3e579bb48 RCX: 00007fd3e56f1089
RDX: 000020000006b000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fd3e579bb40 R08: 35203a6b63617473 R09: 35203a6b63617473
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000140
R13: 000020000006b000 R14: 0000200000000100 R15: 0000200000000680
 </TASK>