------------[ cut here ]------------
WARNING: CPU: 1 PID: 4763 at net/mac80211/tx.c:4859 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
WARNING: CPU: 1 PID: 4763 at net/mac80211/tx.c:4859 __ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5083
Modules linked in:
CPU: 1 PID: 4763 Comm: syz.2.124 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
RIP: 0010:__ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5083
Code: f8 0f 0b e9 f1 fa ff ff e8 81 83 3a f8 0f 0b 4c 8b 74 24 08 e9 36 fe ff ff e8 70 83 3a f8 0f 0b e9 3c ef ff ff e8 64 83 3a f8 <0f> 0b e9 b8 f2 ff ff e8 88 e7 6b 00 44 89 e1 80 e1 07 80 c1 03 38
RSP: 0018:ffffc90000dd08c0 EFLAGS: 00010246
RAX: ffffffff893d46ec RBX: ffff88805eb14c80 RCX: ffff888022d2d940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000dd0ae8 R08: ffff888022d2d940 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88801f00a400
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920001ba128
FS: 0000555579e06500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32420ff8 CR3: 000000001e527000 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+0x53d/0xc40 kernel/time/hrtimer.c:1749
hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
handle_softirqs+0x328/0x820 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x12f/0x220 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:unwind_next_frame+0x1197/0x1d90 arch/x86/kernel/unwind_orc.c:609
Code: ff df 48 8b 44 24 48 42 0f b6 04 28 84 c0 0f 85 30 08 00 00 8b 44 24 7c 39 03 0f 85 ff 00 00 00 48 8b 44 24 40 42 80 3c 28 00 <74> 0a 48 8b 7c 24 38 e8 5d a8 87 00 4c 8b 7b 38 48 8d 7b 08 48 89
RSP: 0018:ffffc9000326f3c8 EFLAGS: 00000246
RAX: 1ffff9200064de98 RBX: ffffc9000326f488 RCX: 0000000000000001
RDX: ffffc9000326f4c8 RSI: ffffc9000326fd20 RDI: ffffc9000326fd20
RBP: ffffc9000326f4d0 R08: dffffc0000000000 R09: ffffc9000326f4d8
R10: fffff5200064de9d R11: 1ffff9200064de9b R12: 1ffffffff1bd9fad
R13: dffffc0000000000 R14: ffffc9000326f4d8 R15: ffffffff8decfd6c
arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122
save_stack+0xf3/0x1e0 mm/page_owner.c:119
__set_page_owner+0x41/0x2d0 mm/page_owner.c:181
prep_new_page mm/page_alloc.c:2426 [inline]
get_page_from_freelist+0x1b77/0x1c60 mm/page_alloc.c:4192
__alloc_pages+0x1e1/0x470 mm/page_alloc.c:5487
vm_area_alloc_pages mm/vmalloc.c:2876 [inline]
__vmalloc_area_node mm/vmalloc.c:2932 [inline]
__vmalloc_node_range+0x4b2/0x8b0 mm/vmalloc.c:3037
vmalloc_user+0x70/0x80 mm/vmalloc.c:3173
kcov_mmap+0x27/0x120 kernel/kcov.c:474
call_mmap include/linux/fs.h:2177 [inline]
mmap_file+0x5d/0xb0 mm/util.c:1092
__mmap_region mm/mmap.c:1796 [inline]
mmap_region+0xf8f/0x1660 mm/mmap.c:2933
do_mmap+0x81f/0xea0 mm/mmap.c:1586
vm_mmap_pgoff+0x1b2/0x2b0 mm/util.c:551
ksys_mmap_pgoff+0x542/0x780 mm/mmap.c:1635
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: 0033:0x7f0d7ed31f03
Code: f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 41 89 ca 41 f7 c1 ff 0f 00 00 75 14 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 25 c3 0f 1f 40 00 48 c7 c0 a8 ff ff ff 64 c7
RSP: 002b:00007ffc22cace68 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f0d7ef89308 RCX: 00007f0d7ed31f03
RDX: 0000000000000003 RSI: 0000000000400000 RDI: 00007f0d7cb36000
RBP: 00007f0d7ef89270 R08: 00000000000000db R09: 0000000000000000
R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000000003
R13: 00007f0d7ef89270 R14: 0000000000001287 R15: 0000000000000004
----------------
Code disassembly (best guess), 1 bytes skipped:
0: df 48 8b fisttps -0x75(%rax)
3: 44 24 48 rex.R and $0x48,%al
6: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax
b: 84 c0 test %al,%al
d: 0f 85 30 08 00 00 jne 0x843
13: 8b 44 24 7c mov 0x7c(%rsp),%eax
17: 39 03 cmp %eax,(%rbx)
19: 0f 85 ff 00 00 00 jne 0x11e
1f: 48 8b 44 24 40 mov 0x40(%rsp),%rax
24: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
* 29: 74 0a je 0x35 <-- trapping instruction
2b: 48 8b 7c 24 38 mov 0x38(%rsp),%rdi
30: e8 5d a8 87 00 call 0x87a892
35: 4c 8b 7b 38 mov 0x38(%rbx),%r15
39: 48 8d 7b 08 lea 0x8(%rbx),%rdi
3d: 48 rex.W
3e: 89 .byte 0x89