rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P4947/1:b..l
	(detected by 1, t=10502 jiffies, g=21105, q=168 ncpus=2)
task:udevd           state:R  running task     stack:24496 pid:4947  ppid:3623   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5244 [inline]
 __schedule+0x10e9/0x40d0 kernel/sched/core.c:6561
 preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6873
 irqentry_exit+0x63/0x70 kernel/entry/common.c:439
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:link_path_walk+0x57a/0xe50 fs/namei.c:-1
Code: e0 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 4a 04 00 00 45 0f b6 24 24 31 ff 44 89 e6 e8 5f c5 9c ff 45 85 e4 0f 84 96 00 00 00 <48> 8b 44 24 18 4e 8d 7c 30 01 4d 89 fe 4c 89 f0 48 c1 e8 03 42 0f
RSP: 0018:ffffc9000c5ffa00 EFLAGS: 00000202
RAX: ffffffff81e400a1 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888059d73b80 RSI: 000000000000002f RDI: 0000000000000000
RBP: ffffc9000c5ffb30 R08: ffff888059d73b80 R09: 0000000000000002
R10: 000000000000002f R11: 0000000000000000 R12: 000000000000002f
R13: dffffc0000000000 R14: 0000000000000003 R15: ffffc9000c5ffbb8
 path_parentat fs/namei.c:2526 [inline]
 __filename_parentat+0x201/0x610 fs/namei.c:2550
 filename_parentat fs/namei.c:2568 [inline]
 do_renameat2+0x1ef/0xc70 fs/namei.c:4938
 __do_sys_rename fs/namei.c:5073 [inline]
 __se_sys_rename fs/namei.c:5071 [inline]
 __x64_sys_rename+0x82/0x90 fs/namei.c:5071
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa141ceb93b
RSP: 002b:00007fffb1ead828 EFLAGS: 00000206 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa141ceb93b
RDX: 000055943d743c3e RSI: 00007fffb1ead848 RDI: 00007fffb1eadc48
RBP: 000055916461b820 R08: 0000000000000006 R09: 329b2a32f1dece78
R10: 00000000000001b6 R11: 0000000000000206 R12: 000055916461e900
R13: 00007fffb1ead848 R14: 00007fffb1eadc48 R15: 00005591383fc160
 </TASK>
rcu: rcu_preempt kthread starved for 10518 jiffies! g21105 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:27848 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 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
 </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: 6450 Comm: syz.2.502 Not tainted 6.1.135-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:check_preemption_disabled+0x18/0x110 lib/smp_processor_id.c:14
Code: cc cc 48 c7 c7 40 0e bf 8a 48 c7 c6 80 0e bf 8a eb 00 55 41 57 41 56 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 <65> 8b 05 c1 13 f3 75 65 8b 0d 62 69 f3 75 f7 c1 ff ff ff 7f 74 1f
RSP: 0018:ffffc90000007db0 EFLAGS: 00000082
RAX: 87811c22781d5a00 RBX: 0000000000000000 RCX: 0000000080010002
RDX: ffff88801e75d940 RSI: ffffffff8abf0e80 RDI: ffffffff8abf0e40
RBP: 0000000000000001 R08: dffffc0000000000 R09: fffffbfff2116e49
R10: fffffbfff2116e49 R11: 1ffffffff2116e48 R12: ffff888074ed5c80
R13: ffffffff81503dc5 R14: 1ffff92000000fcd R15: 1ffff11003cebc4b
FS:  00007fd1929406c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000007dacb000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rcu_lockdep_current_cpu_online+0x33/0x120 kernel/rcu/tree.c:768
 rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
 rcu_read_lock_held+0x1a/0x40 kernel/rcu/update.c:309
 __lock_task_sighand+0x110/0x2d0 kernel/signal.c:1396
 lock_task_sighand include/linux/sched/signal.h:745 [inline]
 do_send_sig_info kernel/signal.c:1300 [inline]
 group_send_sig_info+0x1da/0x250 kernel/signal.c:1449
 do_bpf_send_signal+0x7b/0x150 kernel/trace/bpf_trace.c:839
 irq_work_single+0xd1/0x230 kernel/irq_work.c:211
 irq_work_run_list kernel/irq_work.c:242 [inline]
 irq_work_run+0x152/0x2e0 kernel/irq_work.c:251
 __sysvec_irq_work+0xba/0x350 arch/x86/kernel/irq_work.c:22
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x98/0xc0 arch/x86/kernel/irq_work.c:17
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:207 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:147 [inline]
RIP: 0010:wrmsr arch/x86/include/asm/msr.h:254 [inline]
RIP: 0010:native_apic_msr_write+0x35/0x50 arch/x86/include/asm/apic.h:206
Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 c3 89 f6 31 d2 e9 6f 38 f8 02 66 2e 0f 1f 84 00 00 00 00 00
RSP: 0018:ffffc900049a7cb0 EFLAGS: 00000246
RAX: 00000000000000f6 RBX: ffffffff8c3cfb78 RCX: 000000000000083f
RDX: 0000000000000000 RSI: 00000000000000f6 RDI: 000000000000083f
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffff52000934f85
R10: fffff52000934f85 R11: 1ffff92000934f84 R12: ffff8880b8e33e01
R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000020
 arch_irq_work_raise+0x82/0xd0 arch/x86/kernel/irq_work.c:31
 irq_work_queue+0x95/0x140 kernel/irq_work.c:114
 bpf_send_signal_common+0x2b2/0x420 kernel/trace/bpf_trace.c:878
 ____bpf_send_signal kernel/trace/bpf_trace.c:887 [inline]
 bpf_send_signal+0x15/0x20 kernel/trace/bpf_trace.c:885
 bpf_prog_7ba5217f62dcd359+0x38/0x3c
 bpf_dispatcher_nop_func include/linux/bpf.h:1001 [inline]
 __bpf_prog_run include/linux/filter.h:603 [inline]
 bpf_prog_run include/linux/filter.h:610 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2284 [inline]
 bpf_trace_run2+0x1cd/0x3b0 kernel/trace/bpf_trace.c:2323
 __bpf_trace_sys_enter+0x60/0x70 include/trace/events/syscalls.h:18
 trace_sys_enter+0x6b/0x80 include/trace/events/syscalls.h:18
 syscall_trace_enter+0xf0/0x150 kernel/entry/common.c:81
 do_syscall_64+0x24/0xa0 arch/x86/entry/common.c:77
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd191b2ab39
Code: 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 90 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 c7 c0 0f 00 00 00 0f 05 <0f> 1f 80 00 00 00 00 48 81 ec 48 01 00 00 49 89 d0 64 48 8b 04 25
RSP: 002b:00007fd19293fa80 EFLAGS: 00000246 ORIG_RAX: 000000000000000f
RAX: ffffffffffffffda RBX: 00007fd191db5fa0 RCX: 00007fd191b2ab39
RDX: 00007fd19293fa80 RSI: 00007fd19293fbb0 RDI: 0000000000000011
RBP: 00007fd191c10ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd191db5fa0 R15: 00007ffe70234b48
 </TASK>