rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (0 ticks this GP) idle=bfdc/1/0x4000000000000000 softirq=16681/16681 fqs=0
rcu: 	(detected by 1, t=10502 jiffies, g=14089, q=716 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6069 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:num_possible_cpus include/linux/cpumask.h:1222 [inline]
RIP: 0010:mm_get_cid kernel/sched/sched.h:3782 [inline]
RIP: 0010:sched_mm_cid_fork+0x524/0xc70 kernel/sched/core.c:10582
Code: ee 8d 48 b8 00 00 00 00 00 fc ff df 49 c1 ef 03 4c 01 f8 48 89 04 24 eb 5d 49 c7 c4 74 96 ee 8d 41 83 e4 07 41 83 c4 03 f3 90 <48> 8b 04 24 0f b6 00 41 38 c4 7c 08 84 c0 0f 85 06 06 00 00 8b 35
RSP: 0018:ffffc90002e47d00 EFLAGS: 00000046
RAX: 0000000000000002 RBX: ffff888078606150 RCX: 1ffff1100f0c0ad9
RDX: 0000000000000002 RSI: 0000000000000002 RDI: ffff888078606150
RBP: ffff888034f00000 R08: 0000000000000001 R09: fffff520005c8f92
R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000007
R13: ffff888078605740 R14: 0000000000000002 R15: 0000000000000002
FS:  00007f6e92d356c0(0000) GS:ffff8881245e3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa82b1e8600 CR3: 0000000029d08000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 bprm_execve fs/exec.c:1776 [inline]
 bprm_execve+0x53f/0x1620 fs/exec.c:1729
 do_execveat_common.isra.0+0x4dc/0x5b0 fs/exec.c:1859
 do_execve fs/exec.c:1933 [inline]
 __do_sys_execve fs/exec.c:2009 [inline]
 __se_sys_execve fs/exec.c:2004 [inline]
 __x64_sys_execve+0x8e/0xb0 fs/exec.c:2004
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6e91d9aeb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6e92d35028 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 00007f6e92015fa0 RCX: 00007f6e91d9aeb9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00002000000000c0
RBP: 00007f6e91e08c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6e92016038 R14: 00007f6e92015fa0 R15: 00007fff5857b0b8
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g14089 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=7178
rcu: rcu_preempt kthread starved for 10502 jiffies! g14089 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:28296 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5260 [inline]
 __schedule+0xfe4/0x5e10 kernel/sched/core.c:6867
 __schedule_loop kernel/sched/core.c:6949 [inline]
 schedule+0xdd/0x390 kernel/sched/core.c:6964
 schedule_timeout+0x127/0x280 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x1a9/0xb00 kernel/rcu/tree.c:2083
 rcu_gp_kthread+0x21e/0x320 kernel/rcu/tree.c:2285
 kthread+0x3b3/0x730 kernel/kthread.c:463
 ret_from_fork+0x754/0xaf0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>