rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2682 jiffies s: 200705 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 16764 Comm: syz.1.14243 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:lockdep_recursion_inc kernel/locking/lockdep.c:462 [inline]
RIP: 0010:lock_acquire+0x181/0x4a0 kernel/locking/lockdep.c:5661
Code: 00 00 00 00 00 00 00 9c 8f 84 24 a0 00 00 00 4c 8b b4 24 a0 00 00 00 43 c6 44 3d 08 f8 fa 48 c7 c7 00 1e 8c 8a e8 bf bd c9 08 <65> ff 05 e8 3b 9e 7e 45 31 c9 41 f7 c6 00 02 00 00 41 0f 94 c1 48
RSP: 0018:ffffc90000007680 EFLAGS: 00000082
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 49ccdd08072cb000
RDX: 0000000000000000 RSI: ffffffff8a8c1e00 RDI: ffffffff8adf1320
RBP: ffffc90000007788 R08: ffffffff8e1ff3ef R09: 1ffffffff1c3fe7d
R10: dffffc0000000000 R11: fffffbfff1c3fe7e R12: 0000000000000000
R13: 1ffff92000000edc R14: 0000000000000046 R15: dffffc0000000000
FS:  00007fbe7bab46c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd33633f60 CR3: 00000000485fd000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 rcu_read_lock include/linux/rcupdate.h:791 [inline]
 trace_call_bpf+0xe0/0x6b0 kernel/trace/bpf_trace.c:134
 perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:10027
 perf_trace_preemptirq_template+0x268/0x320 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0xd3/0x140 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
 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 d2 33 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:ffffc90000007ac0 EFLAGS: 00000206
RAX: 49ccdd08072cb000 RBX: 1ffff92000000f60 RCX: 49ccdd08072cb000
RDX: dffffc0000000000 RSI: ffffffff8a8c1120 RDI: ffffffff8adf1320
RBP: ffffc90000007bb0 R08: ffffffff90af925f R09: 1ffffffff215f24b
R10: dffffc0000000000 R11: fffffbfff215f24c R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8e3b900 R15: 0000000000000001
 __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:1747 [inline]
 __hrtimer_run_queues+0x54a/0xd50 kernel/time/hrtimer.c:1811
 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828
 handle_softirqs+0x2a1/0x930 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:_compound_head include/linux/page-flags.h:255 [inline]
RIP: 0010:virt_to_folio include/linux/mm.h:915 [inline]
RIP: 0010:virt_to_slab mm/slab.h:175 [inline]
RIP: 0010:memcg_slab_post_alloc_hook mm/slab.h:525 [inline]
RIP: 0010:slab_post_alloc_hook+0xfe/0x480 mm/slab.h:745
Code: 6b 07 00 49 ff c6 4d 39 f4 0f 84 04 03 00 00 4b 8b 3c f7 48 85 ff 74 db e8 4f 30 67 ff 48 c1 e8 06 48 83 e0 c0 48 8b 4c 28 08 <f6> c1 01 0f 85 2c 02 00 00 48 01 e8 0f 1f 44 00 00 48 8b 48 08 f6
RSP: 0018:ffffc900035cf6e8 EFLAGS: 00000206
RAX: 00000000017313c0 RBX: ffff88802ec5d200 RCX: ffffea0001731381
RDX: ffffc9001656f000 RSI: 000000000003e32e RDI: 000000000003e32f
RBP: ffffea0000000000 R08: ffff88823b400000 R09: ffff88805cc4f200
R10: 00000000a024ae33 R11: fffffbfff1c3fe7e R12: 0000000000000001
R13: ffff888140009b40 R14: 0000000000000000 R15: ffffc900035cf758
 slab_alloc_node mm/slub.c:3359 [inline]
 slab_alloc mm/slub.c:3367 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3374 [inline]
 kmem_cache_alloc+0x123/0x2f0 mm/slub.c:3383
 kmem_cache_zalloc include/linux/slab.h:689 [inline]
 alloc_vfsmnt+0x24/0x450 fs/namespace.c:207
 clone_mnt+0x6b/0xce0 fs/namespace.c:1109
 copy_tree+0x3d4/0x7e0 fs/namespace.c:1928
 copy_mnt_ns+0x16c/0x990 fs/namespace.c:3518
 create_new_namespaces+0xd3/0x6f0 kernel/nsproxy.c:78
 copy_namespaces+0x3b0/0x410 kernel/nsproxy.c:178
 copy_process+0x19c2/0x4030 kernel/fork.c:2359
 kernel_clone+0x24b/0x900 kernel/fork.c:2762
 __do_sys_clone kernel/fork.c:2903 [inline]
 __se_sys_clone kernel/fork.c:2887 [inline]
 __x64_sys_clone+0x1a7/0x220 kernel/fork.c:2887
 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: 0033:0x7fbe7ab9cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbe7bab3fd8 EFLAGS: 00000202 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fbe7ae16090 RCX: 00007fbe7ab9cdd9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000160480
RBP: 00007fbe7ac32d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 00007fbe7ae16128 R14: 00007fbe7ae16090 R15: 00007ffcf49d31d8
 </TASK>