rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
(detected by 0, t=10502 jiffies, g=8229, q=46 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294955492-4294944989), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10504 jiffies! g8229 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:26912 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x10e9/0x40d0 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
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 4277 Comm: syz-executor142 Not tainted 6.1.141-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0033:0x7feb6cd115f7
Code: 0b e9 68 fe ff ff 48 83 c4 18 48 8d 3d a2 9d 08 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 73 b9 fd ff 0f 1f 00 b8 27 00 00 00 0f 05 0f 1f 84 00 00 00 00 00 b8 6e 00 00 00 0f 05 c3 0f 1f 84 00 00
RSP: 002b:00007fff3abe4a88 EFLAGS: 00000206
RAX: 0000000000000003 RBX: 00007fff3abe4bf0 RCX: 00007feb6cd115f7
RDX: 00007fff3abe4ac0 RSI: 00007fff3abe4bf0 RDI: 0000000000000021
RBP: 0000000000000000 R08: 00007feb6cccb990 R09: 00007feb6cccb990
R10: 0000000000000000 R11: 0000000000000206 R12: 00007feb6cd69ddc
R13: 00007feb6cd63116 R14: 00007fff3abe5080 R15: 0000000000000000
FS: 000055556b8ba3c0 GS: 0000000000000000