rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=281/1/0x4000000000000000 softirq=11915/11916 fqs=5143 
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P6217
	(detected by 1, t=10502 jiffies, g=15965, q=983)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 6217 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_preemption_disabled+0x1f/0x110 lib/smp_processor_id.c:16
Code: 59 8a 48 c7 c6 60 a4 59 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 c9 16 59 76 <65> 8b 0d 32 71 59 76 f7 c1 ff ff ff 7f 74 1f 65 48 8b 0c 25 28 00
RSP: 0018:ffffc900034def30 EFLAGS: 00000086
RAX: 0000000000000000 RBX: ffff888056da0bf0 RCX: ffff88807dec1dc0
RDX: 0000000000000000 RSI: ffffffff8a12a080 RDI: ffffffff8a59a480
RBP: ffff888056da1060 R08: dffffc0000000000 R09: ffffed100adb420d
R10: ffffed100adb420d R11: 1ffff1100adb420c R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000555578f6c500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f22e34e36e0 CR3: 0000000055545000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 __perf_event_account_interrupt+0x2b/0x280 kernel/events/core.c:9422
 __perf_event_overflow+0x99/0x530 kernel/events/core.c:9474
 perf_tp_event+0x32c/0xb50 kernel/events/core.c:10047
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021
 perf_trace_preemptirq_template+0x2be/0x380 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x84/0x480 kernel/rcu/tree_plugin.h:674
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 ad 13 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc900034df4c0 EFLAGS: 00000206
RAX: 0ed4275d0c6d6200 RBX: 1ffff9200069be9c RCX: 0ed4275d0c6d6200
RDX: dffffc0000000000 RSI: ffffffff8a0b1820 RDI: ffffffff8a59a480
RBP: ffffc900034df598 R08: dffffc0000000000 R09: fffffbfff1ff782e
R10: fffffbfff1ff782e R11: 1ffffffff1ff782d R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000246 R15: ffffffff8c120ba0
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:771 [inline]
 d_alloc_parallel+0x104f/0x12d0 fs/dcache.c:2671
 __lookup_slow+0x113/0x3d0 fs/namei.c:1648
 lookup_slow+0x53/0x70 fs/namei.c:1680
 walk_component+0x319/0x460 fs/namei.c:1976
 link_path_walk+0x662/0xd40 fs/namei.c:-1
 path_openat+0x27d/0x2f30 fs/namei.c:3738
 do_filp_open+0x1b3/0x3e0 fs/namei.c:3769
 do_sys_openat2+0x142/0x4a0 fs/open.c:1253
 do_sys_open fs/open.c:1269 [inline]
 __do_sys_openat fs/open.c:1285 [inline]
 __se_sys_openat fs/open.c:1280 [inline]
 __x64_sys_openat+0x135/0x160 fs/open.c:1280
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f22e3509510
Code: 48 89 44 24 20 75 93 44 89 54 24 0c e8 49 94 02 00 44 8b 54 24 0c 89 da 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 38 44 89 c7 89 44 24 0c e8 9c 94 02 00 8b 44
RSP: 002b:00007ffc89a41440 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000080001 RCX: 00007f22e3509510
RDX: 0000000000080001 RSI: 00007f22e358f6a0 RDI: 00000000ffffff9c
RBP: 00007f22e358f6a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000004
R13: 00007ffc89a414e0 R14: 0000000000022526 R15: 00007ffc89a41a50
 </TASK>
task:syz-executor    state:R  running task     stack:26144 pid: 6217 ppid:  4189 flags:0x0000400c
Call Trace:
 <TASK>
 </TASK>