[syzbot] [wireless?] WARNING in drv_get_tsf (3)

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 6916d5703ddf Merge tag 'drm-fixes-2026-05-16' of https://g..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=14dd2536580000
kernel config: https://syzkaller.appspot.com/x/.config?x=d0f0911eedbc130a
dashboard link: https://syzkaller.appspot.com/bug?extid=1c8c45017f784e646b47
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/1efefe7c73e1/disk-6916d570.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1dcf16f12a0f/vmlinux-6916d570.xz
kernel image: https://storage.googleapis.com/syzbot-assets/7bc2e1f3e5cd/bzImage-6916d570.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+1c8c45...@syzkaller.appspotmail.com

------------[ cut here ]------------
wlan0: Failed check-sdata-in-driver check, flags: 0x0
WARNING: net/mac80211/driver-ops.c:255 at drv_get_tsf+0x33f/0x770 net/mac80211/driver-ops.c:255, CPU#0: kworker/u8:17/7122
Modules linked in:
CPU: 0 UID: 0 PID: 7122 Comm: kworker/u8:17 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:drv_get_tsf+0x345/0x770 net/mac80211/driver-ops.c:255
Code: 0a 00 00 4d 85 ed 0f 84 45 03 00 00 e8 34 92 11 f7 49 81 c5 20 01 00 00 e8 28 92 11 f7 48 8d 3d c1 57 f2 05 44 89 f2 4c 89 ee <67> 48 0f b9 3a e9 a6 fd ff ff e8 0c 92 11 f7 65 44 8b 25 78 47 14
RSP: 0018:ffffc90003797b70 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88805c850e40 RCX: ffffffff8af67847
RDX: 0000000000000000 RSI: ffff88805c850120 RDI: ffffffff90e8d060
RBP: ffff88805c830f20 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88805c851878
R13: ffff88805c850120 R14: 0000000000000000 R15: ffff88805c8306c0
FS: 0000000000000000(0000) GS:ffff888124374000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f619fa17e9c CR3: 000000005f5f6000 CR4: 00000000003526f0
Call Trace:
<TASK>
ieee80211_if_fmt_tsf+0x42/0x70 net/mac80211/debugfs_netdev.c:660
wiphy_locked_debugfs_read_work+0xe6/0x1c0 net/wireless/debugfs.c:168
cfg80211_wiphy_work+0x410/0x570 net/wireless/core.c:513
process_one_work+0xa0e/0x1980 kernel/workqueue.c:3314
process_scheduled_works kernel/workqueue.c:3397 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3478
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
----------------
Code disassembly (best guess):
0: 0a 00 or (%rax),%al
2: 00 4d 85 add %cl,-0x7b(%rbp)
5: ed in (%dx),%eax
6: 0f 84 45 03 00 00 je 0x351
c: e8 34 92 11 f7 call 0xf7119245
11: 49 81 c5 20 01 00 00 add $0x120,%r13
18: e8 28 92 11 f7 call 0xf7119245
1d: 48 8d 3d c1 57 f2 05 lea 0x5f257c1(%rip),%rdi # 0x5f257e5
24: 44 89 f2 mov %r14d,%edx
27: 4c 89 ee mov %r13,%rsi
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: e9 a6 fd ff ff jmp 0xfffffdda
34: e8 0c 92 11 f7 call 0xf7119245
39: 65 gs
3a: 44 rex.R
3b: 8b .byte 0x8b
3c: 25 .byte 0x25
3d: 78 47 js 0x86
3f: 14 .byte 0x14


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