------------[ cut here ]------------
WARNING: CPU: 1 PID: 29002 at net/mac80211/tx.c:4859 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
WARNING: CPU: 1 PID: 29002 at net/mac80211/tx.c:4859 __ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5083
Modules linked in:
CPU: 1 PID: 29002 Comm: syz.2.5690 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
RIP: 0010:__ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5083
Code: 2a f8 0f 0b 4f 89 64 2f 04 4f 89 64 2f 0c 43 c6 44 2f 14 f8 e9 19 fe ff ff e8 0d c0 2a f8 0f 0b e9 03 ef ff ff e8 01 c0 2a f8 <0f> 0b e9 76 f2 ff ff e8 15 89 6d 00 89 d9 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc90000dd08e0 EFLAGS: 00010246
RAX: ffffffff894e5f9f RBX: ffff88801f326298 RCX: ffff888029518000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000dd0b08 R08: ffff888029518000 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff888037783000
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920001ba12c
FS: 00007f7becfa06c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000005000 CR3: 0000000062b80000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ieee80211_beacon_get_tim+0x48/0x840 net/mac80211/tx.c:5202
ieee80211_beacon_get include/net/mac80211.h:4983 [inline]
mac80211_hwsim_beacon_tx+0xf4/0x920 drivers/net/wireless/mac80211_hwsim.c:1812
__iterate_interfaces+0x243/0x500 net/mac80211/util.c:793
ieee80211_iterate_active_interfaces_atomic+0xb3/0x140 net/mac80211/util.c:829
mac80211_hwsim_beacon+0x9b/0x180 drivers/net/wireless/mac80211_hwsim.c:1865
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x4eb/0xb70 kernel/time/hrtimer.c:1749
hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
handle_softirqs+0x339/0x830 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:queue_work_on+0x1a0/0x1f0 kernel/workqueue.c:1564
Code: 4d 85 e4 75 16 e8 60 30 2b 00 eb 15 e8 59 30 2b 00 e8 84 f9 6d 08 4d 85 e4 74 ea e8 4a 30 2b 00 fb 48 c7 44 24 20 0e 36 e0 45 <48> b8 00 00 00 00 00 fc ff df 49 c7 44 05 00 00 00 00 00 41 c7 44
RSP: 0018:ffffc9000301f920 EFLAGS: 00000246
RAX: ffffffff814def56 RBX: 0000000000000001 RCX: 0000000000080000
RDX: ffffc9000c351000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc9000301f9e8 R08: ffff88803a62fa5f R09: 1ffff110074c5f4b
R10: dffffc0000000000 R11: ffffed10074c5f4c R12: 0000000000000200
R13: 1ffff92000603f28 R14: 0000000000000000 R15: 1ffff1100be4d000
snd_rawmidi_output_trigger sound/core/rawmidi.c:186 [inline]
snd_rawmidi_kernel_write1+0x4a4/0x590 sound/core/rawmidi.c:1502
snd_rawmidi_write+0x5c2/0xc10 sound/core/rawmidi.c:1555
do_loop_readv_writev fs/read_write.c:-1 [inline]
do_iter_write+0x3e4/0x7b0 fs/read_write.c:857
vfs_writev fs/read_write.c:928 [inline]
do_writev+0x281/0x480 fs/read_write.c:971
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f7beed44eb9
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:00007f7becfa0028 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007f7beefbffa0 RCX: 00007f7beed44eb9
RDX: 0000000000000002 RSI: 0000200000000840 RDI: 0000000000000005
RBP: 00007f7beedb2c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7beefc0038 R14: 00007f7beefbffa0 R15: 00007ffd61b81dd8
----------------
Code disassembly (best guess):
0: 4d 85 e4 test %r12,%r12
3: 75 16 jne 0x1b
5: e8 60 30 2b 00 call 0x2b306a
a: eb 15 jmp 0x21
c: e8 59 30 2b 00 call 0x2b306a
11: e8 84 f9 6d 08 call 0x86df99a
16: 4d 85 e4 test %r12,%r12
19: 74 ea je 0x5
1b: e8 4a 30 2b 00 call 0x2b306a
20: fb sti
21: 48 c7 44 24 20 0e 36 movq $0x45e0360e,0x20(%rsp)
28: e0 45
* 2a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax <-- trapping instruction
31: fc ff df
34: 49 c7 44 05 00 00 00 movq $0x0,0x0(%r13,%rax,1)
3b: 00 00
3d: 41 rex.B
3e: c7 .byte 0xc7
3f: 44 rex.R