[syzbot] [wireless?] divide error in mac80211_hwsim_set_tsf

[syzbot <syzbot+064815c6cd721082a52a@syzkaller.appspotmail.com>]

Hello,

syzbot found the following issue on:

HEAD commit:    0af2f6be1b42 Linux 6.15-rc1
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1741cc04580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=d444e5269179368a
dashboard link: https://syzkaller.appspot.com/bug?extid=064815c6cd721082a52a
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=140f9070580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8909dc8a51ee/disk-0af2f6be.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/e216afa338a8/vmlinux-0af2f6be.xz
kernel image: https://storage.googleapis.com/syzbot-assets/4d21115804e3/bzImage-0af2f6be.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+064815c6cd721082a52a@syzkaller.appspotmail.com

Oops: divide error: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 1148 Comm: kworker/u8:6 Not tainted 6.15.0-rc1-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:mac80211_hwsim_set_tsf+0x139/0x170 drivers/net/wireless/virtual/mac80211_hwsim.c:1239
Code: 48 89 9d 30 3f 00 00 4c 89 b5 28 3f 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc e8 9f cf c4 fa 45 89 ff 4c 89 e8 31 d2 <49> f7 f7 4d 29 ee 48 89 d3 48 f7 db eb a5 e8 54 40 29 fb e9 e7 fe
RSP: 0018:ffffc90003ff7ad8 EFLAGS: 00010246
RAX: 00063249cd8022f2 RBX: 00063249cd8022f3 RCX: ffffffff86f66d11
RDX: 0000000000000000 RSI: ffffffff86f66d71 RDI: 0000000000000006
RBP: ffff8880236830a0 R08: 0000000000000006 R09: 0000000000000001
R10: 00063249cd8022f3 R11: 0000000000000000 R12: 0000000000000001
R13: 00063249cd8022f2 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881249b9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7019ad56c0 CR3: 00000000336ea000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 drv_set_tsf+0x223/0x590 net/mac80211/driver-ops.c:277
 ieee80211_if_parse_tsf+0x2c8/0x560 net/mac80211/debugfs_netdev.c:701
 wiphy_locked_debugfs_write_work+0xe3/0x1c0 net/wireless/debugfs.c:215
 cfg80211_wiphy_work+0x3dc/0x550 net/wireless/core.c:435
 process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
 kthread+0x3c2/0x780 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:mac80211_hwsim_set_tsf+0x139/0x170 drivers/net/wireless/virtual/mac80211_hwsim.c:1239
Code: 48 89 9d 30 3f 00 00 4c 89 b5 28 3f 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc e8 9f cf c4 fa 45 89 ff 4c 89 e8 31 d2 <49> f7 f7 4d 29 ee 48 89 d3 48 f7 db eb a5 e8 54 40 29 fb e9 e7 fe
RSP: 0018:ffffc90003ff7ad8 EFLAGS: 00010246
RAX: 00063249cd8022f2 RBX: 00063249cd8022f3 RCX: ffffffff86f66d11
RDX: 0000000000000000 RSI: ffffffff86f66d71 RDI: 0000000000000006
RBP: ffff8880236830a0 R08: 0000000000000006 R09: 0000000000000001
R10: 00063249cd8022f3 R11: 0000000000000000 R12: 0000000000000001
R13: 00063249cd8022f2 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881249b9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7019ad56c0 CR3: 0000000034a5e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	48 89 9d 30 3f 00 00 	mov    %rbx,0x3f30(%rbp)
   7:	4c 89 b5 28 3f 00 00 	mov    %r14,0x3f28(%rbp)
   e:	5b                   	pop    %rbx
   f:	5d                   	pop    %rbp
  10:	41 5c                	pop    %r12
  12:	41 5d                	pop    %r13
  14:	41 5e                	pop    %r14
  16:	41 5f                	pop    %r15
  18:	c3                   	ret
  19:	cc                   	int3
  1a:	cc                   	int3
  1b:	cc                   	int3
  1c:	cc                   	int3
  1d:	e8 9f cf c4 fa       	call   0xfac4cfc1
  22:	45 89 ff             	mov    %r15d,%r15d
  25:	4c 89 e8             	mov    %r13,%rax
  28:	31 d2                	xor    %edx,%edx
* 2a:	49 f7 f7             	div    %r15 <-- trapping instruction
  2d:	4d 29 ee             	sub    %r13,%r14
  30:	48 89 d3             	mov    %rdx,%rbx
  33:	48 f7 db             	neg    %rbx
  36:	eb a5                	jmp    0xffffffdd
  38:	e8 54 40 29 fb       	call   0xfb294091
  3d:	e9                   	.byte 0xe9
  3e:	e7 fe                	out    %eax,$0xfe


---
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