------------[ cut here ]------------
WARNING: CPU: 0 PID: 6542 at net/mac80211/tx.c:5031 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline]
WARNING: CPU: 0 PID: 6542 at net/mac80211/tx.c:5031 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442
Modules linked in:
CPU: 0 PID: 6542 Comm: syz.1.164 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442
Code: 24 4c 89 e7 e8 9e cc d3 f7 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 c9 a3 96 f7 0f 0b e9 f6 f7 ff ff e8 bd a3 96 f7 <0f> 0b e9 48 fb ff ff e8 b1 a3 96 f7 48 c7 c7 60 07 24 8e 4c 89 e6
RSP: 0018:ffffc90000007a18 EFLAGS: 00010246
RAX: ffffffff89eeebd3 RBX: ffffffff89eed9d6 RCX: ffff88802bb68000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88802bb68000 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805d3a23c0
R13: dffffc0000000000 R14: ffff88805d3a28b0 R15: ffff88802f9f3824
FS: 00007f61fb7ac6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000006000 CR3: 000000001b3a9000 CR4: 00000000003506f0
Call Trace:
ieee80211_beacon_get_tim+0xb8/0x560 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+0x51e/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+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:__timer_delete_sync+0x191/0x2c0 kernel/time/timer.c:1563
Code: 60 10 00 49 89 dc 4d 85 f6 48 bb 00 00 00 00 00 fc ff df 75 07 e8 3f 60 10 00 eb 06 e8 38 60 10 00 fb 65 44 8b 35 67 88 8e 7e <44> 89 f6 81 e6 00 00 0f 00 31 ff e8 cf 63 10 00 41 81 e6 00 00 0f
RSP: 0018:ffffc9000dde7820 EFLAGS: 00000246
RAX: ffffffff81752f58 RBX: dffffc0000000000 RCX: 0000000000080000
RDX: ffffc9000c9d9000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc9000dde78f0 R08: ffffffff8e4a8d6f R09: 1ffffffff1c951ad
R10: dffffc0000000000 R11: fffffbfff1c951ae R12: ffffc9000dde7920
R13: 1ffff92001bbcf08 R14: 0000000080000000 R15: 0000000000000000
timer_delete_sync kernel/time/timer.c:1628 [inline]
del_timer_sync include/linux/timer.h:200 [inline]
schedule_timeout+0x16a/0x280 kernel/time/timer.c:2168
snd_rawmidi_write+0x398/0xb10 sound/core/rawmidi.c:1674
do_loop_readv_writev fs/read_write.c:-1 [inline]
do_iter_write+0x50e/0xc70 fs/read_write.c:862
vfs_writev fs/read_write.c:933 [inline]
do_writev+0x252/0x410 fs/read_write.c:976
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: 0033:0x7f61fa98f6c9
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:00007f61fb7ac038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007f61fabe5fa0 RCX: 00007f61fa98f6c9
RDX: 0000000000000002 RSI: 0000200000000840 RDI: 0000000000000008
RBP: 00007f61faa11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f61fabe6038 R14: 00007f61fabe5fa0 R15: 00007ffd775e5978
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 10 00 adc %al,(%rax)
2: 49 89 dc mov %rbx,%r12
5: 4d 85 f6 test %r14,%r14
8: 48 bb 00 00 00 00 00 movabs $0xdffffc0000000000,%rbx
f: fc ff df
12: 75 07 jne 0x1b
14: e8 3f 60 10 00 call 0x106058
19: eb 06 jmp 0x21
1b: e8 38 60 10 00 call 0x106058
20: fb sti
21: 65 44 8b 35 67 88 8e mov %gs:0x7e8e8867(%rip),%r14d # 0x7e8e8890
28: 7e
* 29: 44 89 f6 mov %r14d,%esi <-- trapping instruction
2c: 81 e6 00 00 0f 00 and $0xf0000,%esi
32: 31 ff xor %edi,%edi
34: e8 cf 63 10 00 call 0x106408
39: 41 rex.B
3a: 81 .byte 0x81
3b: e6 00 out %al,$0x0
3d: 00 0f add %cl,(%rdi)