------------[ cut here ]------------
WARNING: CPU: 1 PID: 5540 at net/mac80211/tx.c:4946 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4946 [inline]
WARNING: CPU: 1 PID: 5540 at net/mac80211/tx.c:4946 __ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5347
Modules linked in:
CPU: 1 PID: 5540 Comm: syz.0.311 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4946 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5347
Code: f7 4c 89 ef e8 00 21 07 f8 45 31 ed 4c 8b bc 24 a0 00 00 00 e9 7f fe ff ff e8 2b 83 ce f7 0f 0b e9 61 f8 ff ff e8 1f 83 ce f7 <0f> 0b e9 85 fb ff ff e8 13 83 ce f7 48 c7 c7 20 02 fc 8d 4c 89 e6
RSP: 0018:ffffc900001e0a48 EFLAGS: 00010246
RAX: ffffffff89b39e81 RBX: dffffc0000000000 RCX: ffff88802f93da00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88802f93da00 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff8880784f6228
R13: ffff8880580c5424 R14: ffff8880784f6760 R15: ffff8880580c5400
FS: 00007f01ebd986c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000003000 CR3: 000000007902d000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ieee80211_beacon_get_tim+0x63/0x4e0 net/mac80211/tx.c:5474
ieee80211_beacon_get include/net/mac80211.h:5335 [inline]
mac80211_hwsim_beacon_tx+0x21c/0xae0 drivers/net/wireless/mac80211_hwsim.c:2091
__iterate_interfaces+0x225/0x4c0 net/mac80211/util.c:788
ieee80211_iterate_active_interfaces_atomic+0xd7/0x170 net/mac80211/util.c:824
mac80211_hwsim_beacon+0xb7/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2147
__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
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xbc/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 4f 57 1e f7 65 8b 05 50 08 c8 75 85 c0 74 3c 48 c7 04 24 0e 36
vkms_vblank_simulate: vblank timer overrun
RSP: 0018:ffffc90005557960 EFLAGS: 00000206
RAX: dffffc0000000004 RBX: 0000000000000a06 RCX: 5821c32e98f06e00
RDX: dffffc0000000000 RSI: ffffffff8a8c17a0 RDI: 0000000000000001
RBP: ffffc900055579f0 R08: ffff88807c565c53 R09: 1ffff1100f8acb8a
R10: dffffc0000000000 R11: ffffed100f8acb8b R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88807c565c50 R15: 1ffff92000aaaf2c
snd_rawmidi_write+0x3cb/0xb90 sound/core/rawmidi.c:1606
do_loop_readv_writev fs/read_write.c:-1 [inline]
do_iter_write+0x4a4/0xb10 fs/read_write.c:863
vfs_writev fs/read_write.c:934 [inline]
do_writev+0x27b/0x480 fs/read_write.c:977
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: 0033:0x7f01eaf9de99
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:00007f01ebd98028 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007f01eb225fa0 RCX: 00007f01eaf9de99
RDX: 0000000000000002 RSI: 0000200000000840 RDI: 0000000000000007
RBP: 00007f01eb033eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f01eb226038 R14: 00007f01eb225fa0 R15: 00007ffefe3cb818
----------------
Code disassembly (best guess):
0: c7 44 24 20 00 00 00 movl $0x0,0x20(%rsp)
7: 00
8: 9c pushf
9: 8f 44 24 20 pop 0x20(%rsp)
d: f7 44 24 20 00 02 00 testl $0x200,0x20(%rsp)
14: 00
15: 41 c6 04 07 f8 movb $0xf8,(%r15,%rax,1)
1a: 75 4b jne 0x67
1c: f7 c3 00 02 00 00 test $0x200,%ebx
22: 74 01 je 0x25
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 4f 57 1e f7 call 0xf71e577e <-- trapping instruction
2f: 65 8b 05 50 08 c8 75 mov %gs:0x75c80850(%rip),%eax # 0x75c80886
36: 85 c0 test %eax,%eax
38: 74 3c je 0x76
3a: 48 rex.W
3b: c7 .byte 0xc7
3c: 04 24 add $0x24,%al
3e: 0e (bad)
3f: 36 ss