rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-....: (10501 ticks this GP) idle=0cfc/1/0x4000000000000000 softirq=73638/75035 fqs=5242
rcu: hardirqs softirqs csw/system
rcu: number: 1839070 2862 0
rcu: cputime: 18134 34355 36 ==> 52520(ms)
rcu: (t=10503 jiffies g=80645 q=1231 ncpus=2)
CPU: 0 PID: 18328 Comm: syz.0.4132 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:stack_trace_consume_entry+0xe1/0x270 kernel/stacktrace.c:93
Code: 85 80 69 00 49 89 d9 4c 8b 04 24 4c 89 e2 4c 89 ff 48 8b 74 24 08 48 8b 1f 45 8d 79 01 0f b6 44 15 00 84 c0 0f 85 35 01 00 00 <45> 89 38 4e 8d 3c cb 4c 89 f8 48 c1 e8 03 80 3c 10 00 74 1a 4c 89
RSP: 0018:ffffc90000007418 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc900000075a0 RCX: ffff88802b1dda00
RDX: dffffc0000000000 RSI: ffffffff81df157c RDI: ffffc90000007520
RBP: 1ffff92000000ea6 R08: ffffc90000007530 R09: 0000000000000001
R10: 0000000000000004 R11: 0000000000000100 R12: 0000000000000000
R13: 1ffff92000000ea5 R14: ffffc90000007528 R15: 0000000000000002
FS: 00007f1945b1f6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000080 CR3: 0000000067fa3000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
arch_stack_walk+0x138/0x190 arch/x86/kernel/stacktrace.c:27
stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4e/0x70 mm/kasan/common.c:53
__kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook+0x6e/0x4b0 mm/slab.h:767
slab_alloc_node mm/slub.c:3495 [inline]
kmem_cache_alloc_node+0x14c/0x320 mm/slub.c:3540
kmalloc_reserve+0x95/0x240 net/core/skbuff.c:562
__alloc_skb+0x138/0x2c0 net/core/skbuff.c:653
__netdev_alloc_skb+0x10c/0x500 net/core/skbuff.c:717
netdev_alloc_skb include/linux/skbuff.h:3272 [inline]
dev_alloc_skb include/linux/skbuff.h:3285 [inline]
__ieee80211_beacon_get+0xe17/0x1600 net/mac80211/tx.c:5447
ieee80211_beacon_get_tim+0xbf/0x580 net/mac80211/tx.c:5569
ieee80211_beacon_get include/net/mac80211.h:5440 [inline]
mac80211_hwsim_beacon_tx+0x3c7/0x780 drivers/net/wireless/virtual/mac80211_hwsim.c:2265
__iterate_interfaces+0x243/0x500 net/mac80211/util.c:766
ieee80211_iterate_active_interfaces_atomic+0xdb/0x180 net/mac80211/util.c:802
mac80211_hwsim_beacon+0xbb/0x1b0 drivers/net/wireless/virtual/mac80211_hwsim.c:2295
__run_hrtimer kernel/time/hrtimer.c:1750 [inline]
__hrtimer_run_queues+0x52a/0xc40 kernel/time/hrtimer.c:1814
hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1831
handle_softirqs+0x280/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:finish_task_switch+0x27e/0x8f0 kernel/sched/core.c:5255
Code: 4c 8b 75 d0 4c 89 e7 e8 50 52 30 09 e8 0b 21 30 00 fb 4c 8b 65 c0 49 8d bc 24 f8 15 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 <84> c0 0f 85 d6 02 00 00 41 80 a4 24 fb 15 00 00 bf 49 8d 9c 24 58
RSP: 0018:ffffc9000fa97858 EFLAGS: 00000a06
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 8fa5cc0ed0836c00
RDX: dffffc0000000000 RSI: ffffffff8acac900 RDI: ffff88802b1deff8
RBP: ffffc9000fa978b0 R08: ffffffff911be5ff R09: 1ffffffff2237cbf
R10: dffffc0000000000 R11: fffffbfff2237cc0 R12: ffff88802b1dda00
R13: dffffc0000000000 R14: ffff888021583c00 R15: ffff8880b8e3cac8
context_switch kernel/sched/core.c:5384 [inline]
__schedule+0x155b/0x45a0 kernel/sched/core.c:6700
preempt_schedule_irq+0xbf/0x150 kernel/sched/core.c:7010
irqentry_exit+0x67/0x70 kernel/entry/common.c:438
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:preempt_schedule+0x0/0xd0 kernel/sched/core.c:6884
Code: 4c 89 f7 e8 92 ec 52 f7 eb af 66 0f 1f 00 bf 01 00 00 00 e8 02 32 d0 f6 e8 fd fd ff ff bf 01 00 00 00 e8 53 30 d0 f6 c3 66 90 0f 1e fa 55 48 89 e5 41 56 53 48 83 e4 e0 48 83 ec 60 65 48 8b
RSP: 0018:ffffc9000fa97c40 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000a06 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff8acac900 RDI: 00000000ffffffff
RBP: ffffc9000fa97c90 R08: ffffffff911be5ff R09: 1ffffffff2237cbf
R10: dffffc0000000000 R11: fffffbfff2237cc0 R12: dffffc0000000000
R13: 1ffff92001f52fb8 R14: ffff88803020b800 R15: 1ffff92001f52f94
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock_irqrestore+0x111/0x120 kernel/locking/spinlock.c:194
__do_sys_perf_event_open kernel/events/core.c:12916 [inline]
__se_sys_perf_event_open+0x183e/0x1c50 kernel/events/core.c:12567
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f1944b9aeb9
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:00007f1945b1f028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f1944e15fa0 RCX: 00007f1944b9aeb9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140
RBP: 00007f1944c08c1f R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1944e16038 R14: 00007f1944e15fa0 R15: 00007ffd58385c68