rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2659 jiffies s: 307733 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: 6189 Comm: syz.6.9163 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:strlen+0x2e/0x60 lib/string.c:502
Code: 41 54 53 48 c7 c0 ff ff ff ff 49 be 00 00 00 00 00 fc ff df 48 89 fb 49 89 c7 48 89 d8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 11 <48> ff c3 49 8d 47 01 42 80 7c 3f 01 00 75 de eb 19 89 d9 80 e1 07
RSP: 0018:ffffc900001e0198 EFLAGS: 00000097
RAX: 0000000000000006 RBX: ffffffff8aad31ca RCX: 000000008aad3102
RDX: ffffffff81a5097e RSI: ffffffff8db2d8a0 RDI: ffffffff8aad31c0
RBP: ffffc900001e02b0 R08: ffffffff8f22dfef R09: 1ffffffff1e45bfd
R10: dffffc0000000000 R11: fffffbfff1e45bfe R12: 1ffff9200003c064
R13: 1ffff9200003c040 R14: dffffc0000000000 R15: 0000000000000009
FS:  00007f7f258de6c0(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc87a509ff8 CR3: 000000005427c000 CR4: 00000000003506e0
DR0: 00002000000004c0 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __fortify_strlen include/linux/fortify-string.h:196 [inline]
 trace_event_get_offsets_lock include/trace/events/lock.h:57 [inline]
 perf_trace_lock+0xd1/0x390 include/trace/events/lock.h:50
 trace_lock_release include/trace/events/lock.h:69 [inline]
 lock_release+0x8ad/0x920 kernel/locking/lockdep.c:5801
 rcu_lock_release include/linux/rcupdate.h:355 [inline]
 rcu_read_unlock include/linux/rcupdate.h:824 [inline]
 __perf_event_output kernel/events/core.c:7751 [inline]
 perf_event_output_forward+0x282/0x2f0 kernel/events/core.c:7760
 __perf_event_overflow+0x457/0x630 kernel/events/core.c:9506
 perf_swevent_overflow kernel/events/core.c:9589 [inline]
 perf_swevent_event+0x315/0x570 kernel/events/core.c:9640
 perf_tp_event+0x36b/0xc10 kernel/events/core.c:10074
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10042
 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 68 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: 5c7eef237c2b5500 RBX: 1ffff9200003c164 RCX: 5c7eef237c2b5500
RDX: dffffc0000000000 RSI: ffffffff8aac19a0 RDI: ffffffff8aff71e0
RBP: ffffc900001e0bd0 R08: ffff8880b8d357cb R09: 1ffff110171a6af9
R10: dffffc0000000000 R11: ffffed10171a6afa R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8d3bb00 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:2153
 __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:mod_objcg_state+0x5b7/0x8b0 mm/memcontrol.c:3218
Code: 00 00 00 0f 85 6f 01 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 06 8e 60 08 41 f7 c6 00 02 00 00 74 a5 fb 4d 85 ff <75> a4 eb aa e8 90 3b 39 02 85 c0 0f 84 9b fb ff ff 48 c7 c0 a8 14
RSP: 0018:ffffc9000e917a40 EFLAGS: 00000246
RAX: 5c7eef237c2b5500 RBX: 1ffff92001d22f54 RCX: 5c7eef237c2b5500
RDX: dffffc0000000000 RSI: ffffffff8aac19a0 RDI: ffffffff8aff71e0
RBP: ffffc9000e917b60 R08: ffff8880b8d357cb R09: 1ffff110171a6af9
R10: dffffc0000000000 R11: ffffed10171a6afa R12: ffff8880b8d36958
R13: dffffc0000000000 R14: 0000000000000a02 R15: 0000000000000000
 memcg_slab_post_alloc_hook mm/slab.h:537 [inline]
 slab_post_alloc_hook+0x32e/0x490 mm/slab.h:745
 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_lru+0x182/0x2e0 mm/slub.c:3390
 __d_alloc+0x2e/0x6e0 fs/dcache.c:1774
 d_alloc_pseudo+0x19/0x70 fs/dcache.c:1906
 alloc_file_pseudo+0xe0/0x200 fs/file_table.c:265
 __anon_inode_getfile fs/anon_inodes.c:122 [inline]
 anon_inode_getfile+0xc1/0x1a0 fs/anon_inodes.c:160
 __do_sys_perf_event_open kernel/events/core.c:12654 [inline]
 __se_sys_perf_event_open+0xc2a/0x1ec0 kernel/events/core.c:12428
 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: 0033:0x7f7f2499f559
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:00007f7f258de028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f7f24c26090 RCX: 00007f7f2499f559
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 00002000000000c0
RBP: 00007f7f24a36b20 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7f24c26128 R14: 00007f7f24c26090 R15: 00007ffff5880ab8
 </TASK>