rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (10500 ticks this GP) idle=7904/1/0x4000000000000000 softirq=12784/12784 fqs=4374
rcu: hardirqs softirqs csw/system
rcu: number: 1343325 0 0
rcu: cputime: 19269 33220 70 ==> 52490(ms)
rcu: (t=10500 jiffies g=11909 q=655 ncpus=2)
CPU: 1 PID: 5931 Comm: syz.2.19 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:seqcount_lockdep_reader_access+0x19a/0x1d0 include/linux/seqlock.h:105
Code: 00 4d 85 e4 75 16 e8 b5 c4 0f 00 eb 15 e8 ae c4 0f 00 e8 89 bc 0d 09 4d 85 e4 74 ea e8 9f c4 0f 00 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3e 00 00 00 00 43 c7 44 3e 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc900001efb00 EFLAGS: 00000246
RAX: ffffffff817757c1 RBX: 0000000000000000 RCX: ffff888024311e00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900001efbb8 R08: ffffffff911c15ef R09: 1ffffffff22382bd
R10: dffffc0000000000 R11: fffffbfff22382be R12: 0000000000000200
R13: 000001fb63109b96 R14: 1ffff9200003df60 R15: dffffc0000000000
FS: 000055557e670500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b34863fff CR3: 00000000769ec000 CR4: 00000000003506e0
Call Trace:
ktime_get_with_offset+0x94/0x330 kernel/time/timekeeping.c:889
ktime_get_real include/linux/timekeeping.h:79 [inline]
mac80211_hwsim_get_tsf_raw drivers/net/wireless/virtual/mac80211_hwsim.c:1180 [inline]
mac80211_hwsim_tx_frame_no_nl+0x709/0x11a0 drivers/net/wireless/virtual/mac80211_hwsim.c:1787
mac80211_hwsim_tx+0x1808/0x2720 drivers/net/wireless/virtual/mac80211_hwsim.c:2058
drv_tx net/mac80211/driver-ops.h:37 [inline]
wake_tx_push_queue net/mac80211/util.c:305 [inline]
ieee80211_handle_wake_tx_queue+0x199/0x2b0 net/mac80211/util.c:322
drv_wake_tx_queue net/mac80211/driver-ops.h:1251 [inline]
schedule_and_wake_txq net/mac80211/driver-ops.h:1258 [inline]
ieee80211_queue_skb+0x1a3e/0x21c0 net/mac80211/tx.c:1678
ieee80211_tx+0x2c3/0x460 net/mac80211/tx.c:1980
__ieee80211_subif_start_xmit+0xe10/0x1500 net/mac80211/tx.c:4333
ieee80211_subif_start_xmit+0xf4/0x560 net/mac80211/tx.c:4527
__netdev_start_xmit include/linux/netdevice.h:4943 [inline]
netdev_start_xmit include/linux/netdevice.h:4957 [inline]
xmit_one net/core/dev.c:3632 [inline]
dev_hard_start_xmit+0x246/0x740 net/core/dev.c:3648
__dev_queue_xmit+0x19a3/0x3660 net/core/dev.c:4442
neigh_output include/net/neighbour.h:543 [inline]
ip6_finish_output2+0xe3d/0x1630 net/ipv6/ip6_output.c:141
dst_output include/net/dst.h:467 [inline]
NF_HOOK include/linux/netfilter.h:304 [inline]
ndisc_send_skb+0xc26/0x14f0 net/ipv6/ndisc.c:513
addrconf_rs_timer+0x2d5/0x630 net/ipv6/addrconf.c:4024
call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x542/0x800 kernel/time/timer.c:2023
run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xc0/0x120 kernel/locking/spinlock.c:194
Code: c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 41 c6 04 07 f8 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 0b c9 cd f6 65 8b 05 2c f8 74 75 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0018:ffffc9000367fca0 EFLAGS: 00000206
RAX: dffffc0000000004 RBX: 0000000000000a06 RCX: 984e95a45ff81e00
RDX: dffffc0000000000 RSI: ffffffff8acac960 RDI: 0000000000000001
RBP: ffffc9000367fd30 R08: ffffffff911c160f R09: 1ffffffff22382c1
R10: dffffc0000000000 R11: fffffbfff22382c2 R12: dffffc0000000000
R13: 1ffff920006cffb8 R14: ffff888075514400 R15: 1ffff920006cff94
__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: 0033:0x7feac519c799
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:00007ffe93dbc1f8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007feac5415fa0 RCX: 00007feac519c799
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140
RBP: 00007feac5232c99 R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007feac5415fac R14: 00007feac5415fa0 R15: 00007feac5415fa0