rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (4 ticks this GP) idle=4c5/1/0x4000000000000000 softirq=25158/25158 fqs=2101 
	(detected by 1, t=10505 jiffies, g=34413, q=1331)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 8923 Comm: syz.2.1035 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:rcu_lock_acquire+0x0/0x30 include/linux/rcupdate.h:311
Code: f9 80 e1 07 80 c1 03 38 c1 0f 8c 0d ff ff ff 4c 89 ff e8 43 d0 21 00 e9 00 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 <e8> 0b 6a dd ff e8 06 6a dd ff 48 c7 c7 60 c4 11 8c 31 f6 31 d2 b9
RSP: 0018:ffffc90000007338 EFLAGS: 00000083
RAX: 0000000000000002 RBX: ffff888021bd91e8 RCX: dffffc0000000000
RDX: 0000000000000100 RSI: ffffc90000007680 RDI: ffffc900000074c0
RBP: ffffc90000007470 R08: dffffc0000000000 R09: ffffc900000074c0
R10: fffff52000000e9f R11: 1ffff92000000e98 R12: 1ffff92000000e78
R13: 0000000000000008 R14: ffffc900000074c0 R15: ffffc90000007680
FS:  00007f9da7fd56c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000005a60b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_read_lock include/linux/rcupdate.h:739 [inline]
 __perf_output_begin kernel/events/ring_buffer.c:163 [inline]
 perf_output_begin_forward+0x97/0xa30 kernel/events/ring_buffer.c:271
 __perf_event_output kernel/events/core.c:7804 [inline]
 perf_event_output_forward+0x15c/0x280 kernel/events/core.c:7822
 __perf_event_overflow+0x364/0x530 kernel/events/core.c:9515
 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 dd 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:ffffc90000007ae0 EFLAGS: 00000206
RAX: 6ae5361c7786a700 RBX: 1ffff92000000f60 RCX: 6ae5361c7786a700
RDX: dffffc0000000000 RSI: ffffffff8a0b1620 RDI: ffffffff8a59a240
RBP: ffffc90000007bb8 R08: dffffc0000000000 R09: fffffbfff1ff761a
R10: fffffbfff1ff761a R11: 1ffffffff1ff7619 R12: ffffffff8c120900
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:771 [inline]
 ieee80211_iterate_active_interfaces_atomic+0x132/0x140 net/mac80211/util.c:831
 mac80211_hwsim_beacon+0x9b/0x180 drivers/net/wireless/mac80211_hwsim.c:1865
 __run_hrtimer kernel/time/hrtimer.c:1690 [inline]
 __hrtimer_run_queues+0x53d/0xc40 kernel/time/hrtimer.c:1754
 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1771
 handle_softirqs+0x328/0x820 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:inode_to_bdi include/linux/backing-dev.h:147 [inline]
RIP: 0010:__inode_attach_wb+0x6c/0x700 fs/fs-writeback.c:241
Code: ff 4d 8b 34 24 48 c7 c0 c8 bf 69 8d 48 c1 e8 03 42 80 3c 28 00 74 0c 48 c7 c7 c8 bf 69 8d e8 fb 16 ea ff 4c 3b 35 dc a5 97 0b <74> 26 e8 bd b0 a5 ff 49 81 c6 68 01 00 00 eb 5b e8 af b0 a5 ff 49
RSP: 0018:ffffc90003e1f438 EFLAGS: 00000287
RAX: 1ffffffff1ad37f9 RBX: ffff88805391bf58 RCX: 0000000000080000
RDX: ffffc90003651000 RSI: 000000000000741a RDI: 000000000000741b
RBP: 1ffff1100a7237f0 R08: 0000000000000004 R09: 0000000000000003
R10: fffff520007c3e80 R11: 1ffff920007c3e80 R12: ffff88805391bf80
R13: dffffc0000000000 R14: ffff8880458ea000 R15: 0000000000000000
 inode_attach_wb include/linux/writeback.h:238 [inline]
 __mark_inode_dirty+0x41f/0xc60 fs/fs-writeback.c:2493
 generic_update_time fs/inode.c:1881 [inline]
 inode_update_time fs/inode.c:1894 [inline]
 touch_atime+0x3a7/0x620 fs/inode.c:1966
 pick_link+0x4a9/0xdc0 fs/namei.c:1757
 step_into+0xae9/0xd00 fs/namei.c:1832
 link_path_walk+0x662/0xd40 fs/namei.c:-1
 path_lookupat+0x9d/0x440 fs/namei.c:2454
 do_o_path+0x94/0x1f0 fs/namei.c:3713
 path_openat+0x2954/0x2f30 fs/namei.c:3735
 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: 0033:0x7f9da9d6dbe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9da7fd5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f9da9fa4fa0 RCX: 00007f9da9d6dbe9
RDX: 0000000000200002 RSI: 0000200000000100 RDI: ffffffffffffff9c
RBP: 00007f9da9df0e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9da9fa5038 R14: 00007f9da9fa4fa0 R15: 00007fff19d3abb8
 </TASK>