rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2665 jiffies s: 860149 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 18712 Comm: syz.4.4903 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:memset_erms+0xb/0x10 arch/x86/lib/memset_64.S:65
Code: 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 f3 aa <4c> 89 c8 c3 90 49 89 fa 40 0f b6 ce 48 b8 01 01 01 01 01 01 01 01
RSP: 0018:ffffc900001e05f8 EFLAGS: 00000002
RAX: 1ffff9200003c000 RBX: ffffc900001e0680 RCX: 0000000000000000
RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffc900001e07d0
RBP: ffffc900001e0888 R08: ffffc900001e07cf R09: ffffc900001e07c0
R10: dffffc0000000000 R11: fffff5200003c0fa R12: dffffc0000000000
R13: 0000000000000014 R14: ffffe8ffffd42e30 R15: ffffc900001e07c0
FS:  00007fb7d6b456c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb7d6b24d58 CR3: 000000004509f000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 perf_tp_event+0x1b2/0xc10 kernel/events/core.c:10050
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10032
 perf_trace_preemptirq_template+0x268/0x320 include/trace/events/preemptirq.h:14
 trace_irq_disable include/trace/events/preemptirq.h:36 [inline]
 trace_hardirqs_off_finish+0x13f/0x180 kernel/trace/trace_preemptirq.c:67
 irqentry_enter+0x33/0x50 kernel/entry/common.c:382
 sysvec_irq_work+0xa/0xc0 arch/x86/kernel/irq_work.c:17
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x7f/0x510 kernel/rcu/tree_plugin.h:685
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 e2 82 95 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc900001e0ae0 EFLAGS: 00000206
RAX: 69ea9c542b924100 RBX: 1ffff9200003c164 RCX: 69ea9c542b924100
RDX: dffffc0000000000 RSI: ffffffff8a8c17a0 RDI: ffffffff8adee1a0
RBP: ffffc900001e0bd0 R08: ffffffff90af2257 R09: 1ffffffff215e44a
R10: dffffc0000000000 R11: fffffbfff215e44b R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8f3bb00 R15: 0000000000000002
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 ieee80211_iterate_active_interfaces_atomic+0x156/0x170 net/mac80211/util.c:826
 mac80211_hwsim_beacon+0xb7/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2147
 __run_hrtimer kernel/time/hrtimer.c:1751 [inline]
 __hrtimer_run_queues+0x522/0xc90 kernel/time/hrtimer.c:1815
 hrtimer_run_softirq+0x173/0x290 kernel/time/hrtimer.c:1832
 handle_softirqs+0x291/0x910 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__schedule+0x10d6/0x4030 kernel/sched/core.c:6570
Code: c7 44 28 08 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 40 01 00 00 0f 85 07 03 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e <41> 5f 5d c3 49 8d bc 24 b8 05 00 00 48 89 f8 48 c1 e8 03 42 0f b6
RSP: 0018:ffffc90005107208 EFLAGS: 00000246
RAX: 69ea9c542b924100 RBX: 0000000000000000 RCX: ffffffff815982e7
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff88807e279710
RBP: ffffc90005107210 R08: ffff88807e279713 R09: 1ffff1100fc4f2e2
R10: dffffc0000000000 R11: ffffed100fc4f2e3 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff1100ad56466
 preempt_schedule_irq+0xbb/0x160 kernel/sched/core.c:6874
 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:lock_acquire+0x225/0x4a0 kernel/locking/lockdep.c:5666
Code: f7 84 24 80 00 00 00 00 02 00 00 43 c6 44 3d 04 f8 0f 85 f0 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 44 3d 00 00 00 00 00 43 c7 44 3d 08 00 00 00 00 65 48 8b 04
RSP: 0018:ffffc90005107380 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 69ea9c542b924100
RDX: 0000000000000000 RSI: ffffffff8a8c2920 RDI: ffffffff8adee1a0
RBP: ffffc900051074a0 R08: dffffc0000000000 R09: 1ffffffff215e44a
R10: dffffc0000000000 R11: fffffbfff215e44b R12: 0000000000000001
R13: 1ffff92000a20e7c R14: 0000000000000246 R15: dffffc0000000000
 __fs_reclaim_acquire mm/page_alloc.c:4749 [inline]
 fs_reclaim_acquire+0x6d/0x100 mm/page_alloc.c:4763
 might_alloc include/linux/sched/mm.h:271 [inline]
 slab_pre_alloc_hook+0x2a/0x300 mm/slab.h:710
 slab_alloc_node mm/slub.c:3279 [inline]
 slab_alloc mm/slub.c:3367 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3374 [inline]
 kmem_cache_alloc_lru+0x49/0x2e0 mm/slub.c:3390
 alloc_inode_sb include/linux/fs.h:3245 [inline]
 proc_alloc_inode+0x26/0xb0 fs/proc/inode.c:67
 alloc_inode fs/inode.c:261 [inline]
 new_inode_pseudo+0x5f/0x1c0 fs/inode.c:1063
 new_inode+0x25/0x1d0 fs/inode.c:1091
 proc_pid_make_inode+0x20/0x1a0 fs/proc/base.c:1956
 proc_pid_make_base_inode fs/proc/base.c:2007 [inline]
 proc_task_instantiate+0x50/0x2b0 fs/proc/base.c:3782
 proc_task_lookup+0x37f/0x4e0 fs/proc/base.c:3826
 __lookup_slow+0x29d/0x3f0 fs/namei.c:1698
 lookup_slow+0x53/0x70 fs/namei.c:1715
 walk_component+0x2ad/0x3e0 fs/namei.c:2006
 link_path_walk+0x6b1/0xea0 fs/namei.c:2330
 path_openat+0x285/0x2f10 fs/namei.c:3787
 do_filp_open+0x1ee/0x420 fs/namei.c:3818
 do_sys_openat2+0x14b/0x4f0 fs/open.c:1320
 do_sys_open fs/open.c:1336 [inline]
 __do_sys_openat fs/open.c:1352 [inline]
 __se_sys_openat fs/open.c:1347 [inline]
 __x64_sys_openat+0x135/0x160 fs/open.c:1347
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fb7d5b5e68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fb7d6b44ec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fb7d6b456c0 RCX: 00007fb7d5b5e68e
RDX: 0000000000000002 RSI: 00007fb7d6b44f90 RDI: ffffffffffffff9c
RBP: 00007fb7d5c33e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb7d5e26038 R14: 00007fb7d5e25fa0 R15: 00007fff1b985d68
 </TASK>