rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-....: (1 GPs behind) idle=d134/1/0x4000000000000000 softirq=105916/105917 fqs=2100
rcu: hardirqs softirqs csw/system
rcu: number: 17332319 0 0
rcu: cputime: 6454 46063 0 ==> 52500(ms)
rcu: (detected by 0, t=10505 jiffies, g=139993, q=169 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 22098 Comm: syz.4.6282 Not tainted 6.6.101-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:504 [inline]
RIP: 0010:cpu_online include/linux/cpumask.h:1082 [inline]
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:24 [inline]
RIP: 0010:lock_acquire+0xa4/0x410 kernel/locking/lockdep.c:5725
Code: f2 f2 f2 4b 89 04 3c 66 43 c7 44 3c 09 f3 f3 43 c6 44 3c 0b f3 0f 1f 44 00 00 65 8b 05 51 b1 9c 7e 83 f8 08 0f 83 8a 01 00 00 <41> 89 c6 c1 e8 06 48 8d 3c c5 e8 84 4a 8e be 08 00 00 00 e8 74 d4
RSP: 0018:ffffc900001f0120 EFLAGS: 00000097
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8cd2fc60
RBP: ffffc900001f0228 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed10171e7a70 R12: 1ffff9200003e030
R13: ffffffff8cd2fc60 R14: ffffffff813c0a9c R15: dffffc0000000000
FS: 00007ff3212286c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001b00 CR3: 0000000049e8a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
rcu_read_lock_sched include/linux/rcupdate.h:878 [inline]
pfn_valid include/linux/mmzone.h:2011 [inline]
__virt_addr_valid+0x1a9/0x540 arch/x86/mm/physaddr.c:65
kasan_addr_to_slab+0xd/0xd0 mm/kasan/common.c:35
__kasan_record_aux_stack+0xf/0xc0 mm/kasan/generic.c:477
irq_work_queue_on+0xf5/0x220 kernel/irq_work.c:150
rcu_read_unlock_special+0x3a7/0x4c0 kernel/rcu/tree_plugin.h:675
__rcu_read_unlock+0x7c/0xd0 kernel/rcu/tree_plugin.h:426
rcu_read_unlock include/linux/rcupdate.h:818 [inline]
__perf_event_output kernel/events/core.c:7969 [inline]
perf_event_output_forward+0x2e6/0x3a0 kernel/events/core.c:7978
__perf_event_overflow+0x447/0x630 kernel/events/core.c:9703
perf_swevent_overflow kernel/events/core.c:9779 [inline]
perf_swevent_event+0x2f5/0x5c0 kernel/events/core.c:-1
perf_tp_event+0x4f9/0x13a0 kernel/events/core.c:10329
perf_trace_run_bpf_submit+0xf4/0x1c0 kernel/events/core.c:10253
perf_trace_preemptirq_template+0x281/0x340 include/trace/events/preemptirq.h:14
trace_irq_enable+0xbf/0xe0 include/trace/events/preemptirq.h:40
trace_hardirqs_on+0x18/0x40 kernel/trace/trace_preemptirq.c:56
asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:723
RIP: 0010:rcu_read_unlock_special+0x88/0x4c0 kernel/rcu/tree_plugin.h:682
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 a9 4e 93 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc900001f0b00 EFLAGS: 00000206
RAX: 1b3c8b8fece42100 RBX: 1ffff9200003e168 RCX: 1b3c8b8fece42100
RDX: dffffc0000000000 RSI: ffffffff8aaaba40 RDI: ffffffff8afc6780
RBP: ffffc900001f0bf0 R08: ffffffff8e4a84ef R09: 1ffffffff1c9509d
R10: dffffc0000000000 R11: fffffbfff1c9509e R12: ffffffff8cd35400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002
__rcu_read_unlock+0x7c/0xd0 kernel/rcu/tree_plugin.h:426
rcu_read_unlock include/linux/rcupdate.h:818 [inline]
ieee80211_iterate_active_interfaces_atomic+0x15a/0x180 net/mac80211/util.c:804
mac80211_hwsim_beacon+0xbb/0x1b0 drivers/net/wireless/virtual/mac80211_hwsim.c:2295
__run_hrtimer kernel/time/hrtimer.c:1755 [inline]
__hrtimer_run_queues+0x51e/0xc40 kernel/time/hrtimer.c:1819
hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1836
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+0xc7/0x190 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:lock_is_held_type+0x13e/0x190 kernel/locking/lockdep.c:5830
Code: 75 40 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 46 41 f7 c5 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 <48> 3b 44 24 08 75 3c 89 e8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f
RSP: 0018:ffffc9000cc3fa18 EFLAGS: 00000206
RAX: 1b3c8b8fece42100 RBX: ffff888027c75a00 RCX: 1b3c8b8fece42100
RDX: 0000000000000000 RSI: ffffffff8aaacbc0 RDI: ffffffff8afc6780
RBP: 0000000000000000 R08: ffffffff8e4a84ef R09: 1ffffffff1c9509d
R10: dffffc0000000000 R11: fffffbfff1c9509e R12: 0000000000000000
R13: 0000000000000246 R14: ffffffff8cd2fc60 R15: 00000000ffffffff
lock_is_held include/linux/lockdep.h:288 [inline]
__might_resched+0xf6/0x610 kernel/sched/core.c:10171
might_alloc include/linux/sched/mm.h:306 [inline]
slab_pre_alloc_hook+0x4a/0x310 mm/slab.h:714
slab_alloc_node mm/slub.c:3467 [inline]
__kmem_cache_alloc_node+0x53/0x260 mm/slub.c:3524
kmalloc_trace+0x2a/0xe0 mm/slab_common.c:1098
kmalloc include/linux/slab.h:600 [inline]
kzalloc include/linux/slab.h:721 [inline]
apparmor_sk_alloc_security+0x77/0x100 security/apparmor/lsm.c:860
security_sk_alloc+0x6e/0xa0 security/security.c:4464
sk_prot_alloc+0x101/0x210 net/core/sock.c:2097
sk_alloc+0x3a/0x360 net/core/sock.c:2147
unix_create1+0xb0/0x790 net/unix/af_unix.c:-1
unix_create+0x154/0x1f0 net/unix/af_unix.c:1084
__sock_create+0x4a6/0x940 net/socket.c:1571
sock_create net/socket.c:1627 [inline]
__sys_socketpair+0x1c1/0x550 net/socket.c:1778
__do_sys_socketpair net/socket.c:1831 [inline]
__se_sys_socketpair net/socket.c:1828 [inline]
__x64_sys_socketpair+0x9b/0xb0 net/socket.c:1828
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7ff32038ebe9
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:00007ff321228038 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007ff3205b5fa0 RCX: 00007ff32038ebe9
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000001
RBP: 00007ff320411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff3205b6038 R14: 00007ff3205b5fa0 R15: 00007ffd21e70548