rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=9061, q=101 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294956243-4294945741), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g9061 f0x2 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:26728 pid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5380 [inline]
 __schedule+0x14d2/0x44d0 kernel/sched/core.c:6699
 schedule+0xbd/0x170 kernel/sched/core.c:6773
 schedule_timeout+0x160/0x280 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x302/0x1560 kernel/rcu/tree.c:1667
 rcu_gp_kthread+0x99/0x380 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5813 Comm: syz-executor320 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:__local_bh_enable_ip+0xd9/0x1c0 kernel/softirq.c:393
Code: 44 24 20 00 00 00 00 9c 8f 44 24 20 8b 44 24 20 fa a9 00 02 00 00 74 0b 49 89 fc e8 21 5d 3a 00 4c 89 e7 65 8b 05 af 25 b2 7e <25> 00 ff 00 00 3d 00 02 00 00 75 05 e8 a6 31 15 00 b8 01 00 00 00
RSP: 0018:ffffc900045ffd00 EFLAGS: 00000002
RAX: 0000000080000200 RBX: 0000000000000200 RCX: ff409c4ea15b0f00
RDX: 0000000000000000 RSI: ffffffff8afc64a0 RDI: ffffffff8131126a
RBP: ffffc900045ffd90 R08: ffffffff8e4a856f R09: 1ffffffff1c950ad
R10: dffffc0000000000 R11: fffffbfff1c950ae R12: ffffffff8131126a
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920008bffa0
FS:  0000555558fc13c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd0f4dfd8b0 CR3: 00000000253cd000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 handle_signal arch/x86/kernel/signal.c:283 [inline]
 arch_do_signal_or_restart+0x477/0x780 arch/x86/kernel/signal.c:312
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xf6/0x180 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+0x61/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd0f4e0c730
Code: 83 c0 16 83 e0 f7 74 12 50 48 8d 3d 9a 10 03 00 e8 d5 f7 fa 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:00007fffbf49db78 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007fd0f4de61d9
RDX: 00007fffbf49db80 RSI: 00007fffbf49dcb0 RDI: 0000000000000021
RBP: 0000000000000000 R08: 00007fffbf49e150 R09: 00007fffbf49e150
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd0f4e6e488
R13: 00007fffbf49e13c R14: 0000000000000000 R15: 431bde82d7b634db
 </TASK>