[syzbot ci] Re: wifi: mac80211_hwsim: don't hand frames to mac80211 while stopping

[syzbot ci <syzbot+cid341333ae0c934f1@syzkaller.appspotmail.com>]

syzbot ci has tested the following series

[v1] wifi: mac80211_hwsim: don't hand frames to mac80211 while stopping
https://lore.kernel.org/all/20260904170140.5f69a10d606b.I4a7921d00643f69e439c7a3b221d104f66a3dcdc@changeid
* [PATCH wireless] wifi: mac80211_hwsim: don't hand frames to mac80211 while stopping

and found the following issue:
BUG: unable to handle kernel paging request in hwsim_cloned_frame_received_nl

Full report is available here:
https://ci.syzbot.org/series/219738fc-ed0e-47c8-8100-a5940fbc20b7

***

BUG: unable to handle kernel paging request in hwsim_cloned_frame_received_nl

tree:      wireless-next
URL:       https://kernel.googlesource.com/pub/scm/linux/kernel/git/wireless/wireless-next.git
base:      1b60ed34f712e9f606d80951f1586f4274ebadf1
arch:      amd64
compiler:  Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
config:    https://ci.syzbot.org/builds/f0e5a89a-2d3b-4813-b1a1-01cf1b6e2ce4/config
syz repro: https://ci.syzbot.org/findings/457734e4-6b31-48a4-9aa6-ac6a4c6d65ee/syz_repro

BUG: unable to handle page fault for address: 00000000000048d0
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 10ab48067 P4D 10ab48067 PUD 0 
Oops: Oops: 0000 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 5793 Comm: syz.2.19 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:lock_release+0x85/0x3c0 kernel/locking/lockdep.c:5923
Code: 84 26 02 00 00 65 8b 05 71 68 f1 11 85 c0 0f 85 17 02 00 00 65 4c 8b 3d b1 23 f1 11 41 83 bf a4 0b 00 00 00 0f 85 01 02 00 00 <49> 81 3e e0 24 56 94 0f 84 f4 01 00 00 9c 5b fa 48 c7 c7 60 f2 48
RSP: 0018:ffffc900036ef418 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000004870 RCX: 8000000000000001
RDX: 0000000000000000 RSI: ffffffff8c6d9460 RDI: ffffffff8c6d9420
RBP: ffffc900036ef570 R08: ffffc900036ef60f R09: 0000000000000000
R10: ffffc900036ef5e0 R11: fffff520006ddec2 R12: ffff888171777aa4
R13: ffffffff873ae393 R14: 00000000000048d0 R15: ffff88810ccca580
FS:  00007fe9e40d46c0(0000) GS:ffff8882a8cd9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000048d0 CR3: 0000000113f11000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __mutex_unlock_slowpath+0x88/0x900 kernel/locking/mutex.c:989
 hwsim_cloned_frame_received_nl+0x363/0xcf0 drivers/net/wireless/virtual/mac80211_hwsim_main.c:6607
 genl_family_rcv_msg_doit+0x233/0x340 net/netlink/genetlink.c:1114
 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
 genl_rcv_msg+0x614/0x7a0 net/netlink/genetlink.c:1209
 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x7bd/0x940 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:800
 __sock_sendmsg net/socket.c:815 [inline]
 __sys_sendto+0x408/0x5a0 net/socket.c:2281
 __do_sys_sendto net/socket.c:2288 [inline]
 __se_sys_sendto net/socket.c:2284 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2284
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe9e315e98e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fe9e40d2ea8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fe9e40d46c0 RCX: 00007fe9e315e98e
RDX: 0000000000000034 RSI: 00007fe9e40d2fe0 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007fe9e40d2f24 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000000000 R14: 00007fe9e40d2fe0 R15: 0000000000000000
 </TASK>
Modules linked in:
CR2: 00000000000048d0
---[ end trace 0000000000000000 ]---
RIP: 0010:lock_release+0x85/0x3c0 kernel/locking/lockdep.c:5923
Code: 84 26 02 00 00 65 8b 05 71 68 f1 11 85 c0 0f 85 17 02 00 00 65 4c 8b 3d b1 23 f1 11 41 83 bf a4 0b 00 00 00 0f 85 01 02 00 00 <49> 81 3e e0 24 56 94 0f 84 f4 01 00 00 9c 5b fa 48 c7 c7 60 f2 48
RSP: 0018:ffffc900036ef418 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000004870 RCX: 8000000000000001
RDX: 0000000000000000 RSI: ffffffff8c6d9460 RDI: ffffffff8c6d9420
RBP: ffffc900036ef570 R08: ffffc900036ef60f R09: 0000000000000000
R10: ffffc900036ef5e0 R11: fffff520006ddec2 R12: ffff888171777aa4
R13: ffffffff873ae393 R14: 00000000000048d0 R15: ffff88810ccca580
FS:  00007fe9e40d46c0(0000) GS:ffff8882a8cd9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000048d0 CR3: 0000000113f11000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
   0:	84 26                	test   %ah,(%rsi)
   2:	02 00                	add    (%rax),%al
   4:	00 65 8b             	add    %ah,-0x75(%rbp)
   7:	05 71 68 f1 11       	add    $0x11f16871,%eax
   c:	85 c0                	test   %eax,%eax
   e:	0f 85 17 02 00 00    	jne    0x22b
  14:	65 4c 8b 3d b1 23 f1 	mov    %gs:0x11f123b1(%rip),%r15        # 0x11f123cd
  1b:	11
  1c:	41 83 bf a4 0b 00 00 	cmpl   $0x0,0xba4(%r15)
  23:	00
  24:	0f 85 01 02 00 00    	jne    0x22b
* 2a:	49 81 3e e0 24 56 94 	cmpq   $0xffffffff945624e0,(%r14) <-- trapping instruction
  31:	0f 84 f4 01 00 00    	je     0x22b
  37:	9c                   	pushf
  38:	5b                   	pop    %rbx
  39:	fa                   	cli
  3a:	48                   	rex.W
  3b:	c7                   	.byte 0xc7
  3c:	c7                   	(bad)
  3d:	60                   	(bad)
  3e:	f2                   	repnz
  3f:	48                   	rex.W


***

If these findings have caused you to resend the series or submit a
separate fix, please add the following tag to your commit message:
  Tested-by: syzbot@syzkaller.appspotmail.com

---
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