------------[ cut here ]------------
WARNING: CPU: 1 PID: 3637 at net/mac80211/tx.c:4944 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline]
WARNING: CPU: 1 PID: 3637 at net/mac80211/tx.c:4944 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5345
Modules linked in:
CPU: 1 PID: 3637 Comm: udevd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5345
Code: 24 4c 89 e7 e8 9e d3 0a f8 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 39 3d d2 f7 0f 0b e9 f6 f7 ff ff e8 2d 3d d2 f7 <0f> 0b e9 48 fb ff ff e8 21 3d d2 f7 48 c7 c7 50 d6 fa 8d 4c 89 e6
vkms_vblank_simulate: vblank timer overrun
RSP: 0018:ffffc900001e0a30 EFLAGS: 00010246
RAX: ffffffff89b03583 RBX: ffffffff89b02386 RCX: ffff88807d39d940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88807d39d940 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88802fdca228
R13: dffffc0000000000 R14: ffff88802fdca760 R15: ffff888055c65c24
FS: 00007f952301f880(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056239fc02830 CR3: 000000002fcfd000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ieee80211_beacon_get_tim+0x63/0x4e0 net/mac80211/tx.c:5472
ieee80211_beacon_get include/net/mac80211.h:5335 [inline]
mac80211_hwsim_beacon_tx+0x21c/0xae0 drivers/net/wireless/mac80211_hwsim.c:2091
__iterate_interfaces+0x243/0x500 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:1747 [inline]
__hrtimer_run_queues+0x54a/0xd50 kernel/time/hrtimer.c:1811
hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828
handle_softirqs+0x2a1/0x930 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:native_save_fl arch/x86/include/asm/irqflags.h:35 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:106 [inline]
RIP: 0010:lock_release+0x15e/0x920 kernel/locking/lockdep.c:5678
Code: 04 00 00 4c 89 74 24 08 43 c6 44 2f 08 00 48 c7 84 24 a0 00 00 00 00 00 00 00 9c 8f 84 24 a0 00 00 00 48 8b 84 24 a0 00 00 00 <48> 89 44 24 50 43 c6 44 2f 08 f8 fa 48 c7 c7 00 1f 8c 8a e8 9a 5a
RSP: 0018:ffffc900032a7c60 EFLAGS: 00000246
RAX: 0000000000000246 RBX: ffff88807d39e41c RCX: a9c7877f40e26200
RDX: 0000000000000000 RSI: ffffffff8adf0f40 RDI: ffffffff8adf0f00
RBP: ffffc900032a7d68 R08: ffffffff8e1fd76f R09: 1ffffffff1c3faed
R10: dffffc0000000000 R11: fffffbfff1c3faee R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88807d39d940 R15: 1ffff92000654f98
rcu_lock_release include/linux/rcupdate.h:355 [inline]
rcu_read_unlock_sched include/linux/rcupdate.h:904 [inline]
pfn_valid include/linux/mmzone.h:1867 [inline]
__virt_addr_valid+0x435/0x540 arch/x86/mm/physaddr.c:65
kasan_addr_to_slab+0x9/0xc0 mm/kasan/common.c:36
__kasan_record_aux_stack+0xf/0xc0 mm/kasan/generic.c:471
task_work_add+0x7f/0x330 kernel/task_work.c:48
fput+0xd9/0x1a0 fs/file_table.c:376
filp_close+0x108/0x150 fs/open.c:1439
__do_sys_close fs/open.c:1452 [inline]
__se_sys_close fs/open.c:1450 [inline]
__x64_sys_close+0x34/0x70 fs/open.c:1450
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: 0033:0x7f9522915a67
Code: 44 00 00 48 83 ec 10 48 63 ff 45 31 c9 45 31 c0 6a 01 31 c9 e8 ca 19 f9 ff 48 83 c4 18 c3 0f 1f 44 00 00 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 8b 15 61 b3 0d 00 f7 d8 64 89 02 b8
RSP: 002b:00007ffde4cabcd8 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 000056239fbfa7f0 RCX: 00007f9522915a67
RDX: fffffffffffff000 RSI: 00007f95229f1b20 RDI: 000000000000000f
RBP: 000056239fbb28e0 R08: 000000000001ef90 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000202 R12: 000056239fbbc7b0
R13: 00000000000000fd R14: 0000562397fd6be0 R15: 00007ffde4cabfd0
----------------
Code disassembly (best guess):
0: 04 00 add $0x0,%al
2: 00 4c 89 74 add %cl,0x74(%rcx,%rcx,4)
6: 24 08 and $0x8,%al
8: 43 c6 44 2f 08 00 movb $0x0,0x8(%r15,%r13,1)
e: 48 c7 84 24 a0 00 00 movq $0x0,0xa0(%rsp)
15: 00 00 00 00 00
1a: 9c pushf
1b: 8f 84 24 a0 00 00 00 pop 0xa0(%rsp)
22: 48 8b 84 24 a0 00 00 mov 0xa0(%rsp),%rax
29: 00
* 2a: 48 89 44 24 50 mov %rax,0x50(%rsp) <-- trapping instruction
2f: 43 c6 44 2f 08 f8 movb $0xf8,0x8(%r15,%r13,1)
35: fa cli
36: 48 c7 c7 00 1f 8c 8a mov $0xffffffff8a8c1f00,%rdi
3d: e8 .byte 0xe8
3e: 9a (bad)
3f: 5a pop %rdx