rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-....: (10309 ticks this GP) idle=00dc/1/0x4000000000000000 softirq=19262/19583 fqs=5161
rcu: hardirqs softirqs csw/system
rcu: number: 1 858 0
rcu: cputime: 9525 42958 309 ==> 52530(ms)
rcu: (t=10504 jiffies g=13489 q=3231 ncpus=2)
CPU: 0 UID: 0 PID: 6673 Comm: syz.2.224 Not tainted 6.15.0-rc4-syzkaller-g149e0cf4c99c #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline]
RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline]
RIP: 0010:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x4e/0xb0 kernel/rcu/tree.c:736
Code: ff df 4c 8d 34 dd 10 dc 96 8d 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 2c ce 7a 00 48 c7 c3 58 6b 76 92 49 03 1e <48> 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 75 34 8b 03 65 ff 0d c9
RSP: 0018:ffffc90000006c18 EFLAGS: 00000283
RAX: 1ffffffff1b2db82 RBX: ffff8880b8832b58 RCX: 7f3a8ae5a126f700
RDX: 0000000000000100 RSI: ffffffff8bc1d000 RDI: ffffffff8bc1cfc0
RBP: ffffc90000006db0 R08: ffffc90000006c17 R09: 0000000000000000
R10: ffffc90000006c00 R11: fffff52000000d83 R12: ffffc90000006ce0
R13: ffffffff81eebf8f R14: ffffffff8d96dc10 R15: dffffc0000000000
FS: 00005555562e0500(0000) GS:ffff8881260cc000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 00000000343ea000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0x4b/0x3e0 kernel/locking/lockdep.c:5877
rcu_lock_release include/linux/rcupdate.h:341 [inline]
rcu_read_unlock include/linux/rcupdate.h:871 [inline]
__perf_event_output kernel/events/core.c:8364 [inline]
perf_event_output_forward+0x37f/0x430 kernel/events/core.c:8373
__perf_event_overflow+0x7cc/0xe10 kernel/events/core.c:10249
perf_swevent_overflow kernel/events/core.c:10324 [inline]
perf_swevent_event+0x2f4/0x5e0 kernel/events/core.c:-1
perf_tp_event+0x4f6/0x1380 kernel/events/core.c:10869
perf_trace_run_bpf_submit+0xee/0x170 kernel/events/core.c:10793
do_perf_trace_lock include/trace/events/lock.h:50 [inline]
perf_trace_lock+0x2f8/0x3b0 include/trace/events/lock.h:50
__do_trace_lock_release include/trace/events/lock.h:69 [inline]
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0x3b2/0x3e0 kernel/locking/lockdep.c:5877
rcu_lock_release include/linux/rcupdate.h:341 [inline]
rcu_read_unlock include/linux/rcupdate.h:871 [inline]
class_rcu_destructor include/linux/rcupdate.h:1155 [inline]
unwind_next_frame+0x19a9/0x2390 arch/x86/kernel/unwind_orc.c:680
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:319 [inline]
__kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:345
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4161 [inline]
slab_alloc_node mm/slub.c:4210 [inline]
kmem_cache_alloc_node_noprof+0x1bb/0x3c0 mm/slub.c:4262
__alloc_skb+0x112/0x2d0 net/core/skbuff.c:658
__netdev_alloc_skb+0x108/0x970 net/core/skbuff.c:732
netdev_alloc_skb include/linux/skbuff.h:3413 [inline]
dev_alloc_skb include/linux/skbuff.h:3426 [inline]
__ieee80211_beacon_get+0xe32/0x1630 net/mac80211/tx.c:5475
ieee80211_beacon_get_tim+0xb4/0x2b0 net/mac80211/tx.c:5597
ieee80211_beacon_get include/net/mac80211.h:5648 [inline]
mac80211_hwsim_beacon_tx+0x3d2/0x860 drivers/net/wireless/virtual/mac80211_hwsim.c:2313
__iterate_interfaces+0x2a8/0x590 net/mac80211/util.c:761
ieee80211_iterate_active_interfaces_atomic+0xdb/0x180 net/mac80211/util.c:797
mac80211_hwsim_beacon+0xbb/0x1c0 drivers/net/wireless/virtual/mac80211_hwsim.c:2347
__run_hrtimer kernel/time/hrtimer.c:1761 [inline]
__hrtimer_run_queues+0x529/0xc60 kernel/time/hrtimer.c:1825
hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1842
handle_softirqs+0x283/0x870 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
sysvec_irq_work+0xa3/0xc0 arch/x86/kernel/irq_work.c:17
asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa8/0x110 kernel/locking/spinlock.c:194
Code: 74 05 e8 8b e1 6e f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 73 63 38 f6 65 8b 05 5c e5 1c 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc90003cc6d40 EFLAGS: 00000206
RAX: 7f3a8ae5a126f700 RBX: 0000000000000a06 RCX: 7f3a8ae5a126f700
RDX: 0000000000000000 RSI: ffffffff8d74a4de RDI: 0000000000000001
RBP: ffffc90003cc6dd0 R08: ffffffff8f7ed277 R09: 1ffffffff1efda4e
R10: dffffc0000000000 R11: fffffbfff1efda4f R12: dffffc0000000000
R13: ffffffff8df40c00 R14: ffffffff8df41400 R15: 1ffff92000798da8
rcu_report_exp_rnp kernel/rcu/tree_exp.h:225 [inline]
rcu_preempt_deferred_qs_irqrestore+0x874/0xc40 kernel/rcu/tree_plugin.h:579
rcu_read_unlock_special+0x3fe/0x4c0 kernel/rcu/tree_plugin.h:693
__rcu_read_unlock+0x84/0xe0 kernel/rcu/tree_plugin.h:438
rcu_read_unlock include/linux/rcupdate.h:873 [inline]
class_rcu_destructor include/linux/rcupdate.h:1155 [inline]
unwind_next_frame+0x19ae/0x2390 arch/x86/kernel/unwind_orc.c:680
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:319 [inline]
__kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:345
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4161 [inline]
slab_alloc_node mm/slub.c:4210 [inline]
kmem_cache_alloc_lru_noprof+0x1c6/0x3d0 mm/slub.c:4229
alloc_inode+0xb8/0x1b0 fs/inode.c:348
new_inode_pseudo include/linux/fs.h:3309 [inline]
prepare_anon_dentry fs/libfs.c:2138 [inline]
path_from_stashed+0x299/0x8f0 fs/libfs.c:2225
perf_fill_ns_link_info kernel/events/core.c:8962 [inline]
perf_event_namespaces+0x342/0x920 kernel/events/core.c:9004
perf_event_fork+0x152/0x7d0 kernel/events/core.c:8796
copy_process+0x37ee/0x3b80 kernel/fork.c:2659
kernel_clone+0x21e/0x870 kernel/fork.c:2844
__do_sys_clone3 kernel/fork.c:3148 [inline]
__se_sys_clone3+0x256/0x2d0 kernel/fork.c:3127
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb5bbdc31c9
Code: bf 08 00 48 8d 3d dc bf 08 00 e8 e2 28 f6 ff 66 90 b8 ea ff ff ff 48 85 ff 74 2c 48 85 d2 74 27 49 89 c8 b8 b3 01 00 00 0f 05 <48> 85 c0 7c 18 74 01 c3 31 ed 48 83 e4 f0 4c 89 c7 ff d2 48 89 c7
RSP: 002b:00007fff618b3908 EFLAGS: 00000202 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 00007fb5bbd455b0 RCX: 00007fb5bbdc31c9
RDX: 00007fb5bbd455b0 RSI: 0000000000000058 RDI: 00007fff618b3950
RBP: 00007fb5bcc6a6c0 R08: 00007fb5bcc6a6c0 R09: 00007fff618b3a37
R10: 0000000000000008 R11: 0000000000000202 R12: ffffffffffffffa8
R13: 000000000000000b R14: 00007fff618b3950 R15: 00007fff618b3a38
sched: DL replenish lagged too much