rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5197/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=22125, q=884 ncpus=2)
task:udevd           state:R  running task     stack:25880 pid:5197  tgid:5197  ppid:1      task_flags:0x400140 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5295 [inline]
 __schedule+0x1539/0x5080 kernel/sched/core.c:6907
 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7234
 irqentry_exit+0x599/0x620 kernel/entry/common.c:239
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_is_held include/linux/lockdep.h:249 [inline]
RIP: 0010:rcu_read_lock_held+0x2e/0x50 kernel/rcu/update.c:351
Code: 53 e8 06 cd 01 0a 85 c0 74 26 31 db e8 5b e7 00 00 84 c0 74 20 e8 52 2c 01 00 84 c0 74 17 48 c7 c7 a0 01 96 8e be ff ff ff ff <5b> e9 9c c9 01 0a bb 01 00 00 00 89 d8 5b e9 cf a9 04 0a cc 66 66
RSP: 0018:ffffc90002e67770 EFLAGS: 00000202
RAX: 1ffffffff1d2cb01 RBX: 0000000000000000 RCX: 0000000080000001
RDX: ffff88807f0fbc80 RSI: 00000000ffffffff RDI: ffffffff8e9601a0
RBP: ffffc90002e678b0 R08: ffffffff8985d881 R09: ffffffff8e9601a0
R10: dffffc0000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000001 R14: ffff88807eed0000 R15: ffff88807d017640
 sk_filter_trim_cap+0x2c0/0xd90 net/core/filter.c:163
 sk_filter include/linux/filter.h:1102 [inline]
 do_one_broadcast net/netlink/af_netlink.c:1480 [inline]
 netlink_broadcast_filtered+0x745/0x1020 net/netlink/af_netlink.c:1533
 netlink_broadcast+0x37/0x50 net/netlink/af_netlink.c:1557
 uevent_net_broadcast_untagged lib/kobject_uevent.c:331 [inline]
 kobject_uevent_net_broadcast+0x378/0x560 lib/kobject_uevent.c:410
 kobject_uevent_env+0x55c/0x9e0 lib/kobject_uevent.c:608
 kobject_synth_uevent+0x585/0xbd0 lib/kobject_uevent.c:207
 uevent_store+0x26/0x70 drivers/base/core.c:2773
 kernfs_fop_write_iter+0x3af/0x540 fs/kernfs/file.c:352
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61d/0xb90 fs/read_write.c:688
 ksys_write+0x150/0x270 fs/read_write.c:740
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff44bea7407
RSP: 002b:00007fff9aed08d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ff44c5ba880 RCX: 00007ff44bea7407
RDX: 0000000000000007 RSI: 0000561d74f66550 RDI: 000000000000000c
RBP: 0000561d74f66550 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000007
R13: 0000561d74f5b830 R14: 00007ff44bfefea0 R15: 00007fff9aed0c10
 </TASK>
rcu: rcu_preempt kthread starved for 10533 jiffies! g22125 f0x0 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:27624 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5295 [inline]
 __schedule+0x1539/0x5080 kernel/sched/core.c:6907
 __schedule_loop kernel/sched/core.c:6989 [inline]
 schedule+0x164/0x360 kernel/sched/core.c:7004
 schedule_timeout+0x158/0x2c0 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x312/0x11d0 kernel/rcu/tree.c:2095
 rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2297
 kthread+0x388/0x470 kernel/kthread.c:467
 ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 7812 Comm: syz.2.545 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0033:0x7fb6ce394d17
Code: 8d 3d 22 6e 0b 00 e8 58 1d fa ff e8 23 87 00 00 0f 1f 00 b8 68 00 00 00 0f 05 c3 0f 1f 84 00 00 00 00 00 b8 27 00 00 00 0f 05 <c3> 0f 1f 84 00 00 00 00 00 b8 6e 00 00 00 0f 05 c3 0f 1f 84 00 00
RSP: 002b:00007fb6cf2b7b08 EFLAGS: 00000202
RAX: 0000000000000143 RBX: 00007fb6cf2b7c70 RCX: 00007fb6ce394d17
RDX: 00007fb6cf2b7b40 RSI: 00007fb6cf2b7c70 RDI: 0000000000000021
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 00007fb6ce606038 R14: 00007ffed1e66590 R15: 00007ffed1e66678
FS:  00007fb6cf2b86c0 GS:  0000000000000000