Message-ID: <0000000000009096d3061a9fe1ac@google.com>
Date: Tue, 11 Jun 2024 09:37:26 -0700
From: syzbot <syzbot+cd6135193ba6bb9ad158@...kaller.appspotmail.com>
To: davem@...emloft.net, edumazet@...gle.com, ilan.peer@...el.com, 
	johannes.berg@...el.com, johannes@...solutions.net, kuba@...nel.org, 
	linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org, 
	miriam.rachel.korenblit@...el.com, netdev@...r.kernel.org, pabeni@...hat.com, 
	syzkaller-bugs@...glegroups.com
Subject: [syzbot] [wireless?] WARNING in rdev_scan

Hello,

syzbot found the following issue on:

HEAD commit:    c44711b78608 liquidio: Adjust a NULL pointer handling path..
git tree:       net
console+strace: https://syzkaller.appspot.com/x/log.txt?x=164c2762980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=333ebe38d43c42e2
dashboard link: https://syzkaller.appspot.com/bug?extid=cd6135193ba6bb9ad158
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=105b4602980000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=163c3b32980000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/47ff53e982e7/disk-c44711b7.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/7b10dcb52f35/vmlinux-c44711b7.xz
kernel image: https://storage.googleapis.com/syzbot-assets/b4a6bf6f87c5/bzImage-c44711b7.xz

The issue was bisected to:

commit f7a8b10bfd614d7a9a16fbe80d28ead4f063cb00
Author: Johannes Berg <johannes.berg@...el.com>
Date:   Fri May 10 09:37:38 2024 +0000

    wifi: cfg80211: fix 6 GHz scan request building

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=13500a36980000
final oops:     https://syzkaller.appspot.com/x/report.txt?x=10d00a36980000
console output: https://syzkaller.appspot.com/x/log.txt?x=17500a36980000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+cd6135193ba6bb9ad158@...kaller.appspotmail.com
Fixes: f7a8b10bfd61 ("wifi: cfg80211: fix 6 GHz scan request building")

warning: `syz-executor368' uses wireless extensions which will stop working for Wi-Fi 7 hardware; use nl80211
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5094 at net/wireless/rdev-ops.h:462 rdev_scan+0x188/0x300 net/wireless/rdev-ops.h:462
Modules linked in:
CPU: 1 PID: 5094 Comm: syz-executor368 Not tainted 6.10.0-rc2-syzkaller-00228-gc44711b78608 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:rdev_scan+0x188/0x300 net/wireless/rdev-ops.h:462
Code: e8 0d a8 01 00 89 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 17 35 c1 f6 90 0f 0b 90 e9 23 ff ff ff e8 09 35 c1 f6 90 <0f> 0b 90 bb ea ff ff ff eb d1 e8 f9 34 c1 f6 c6 05 42 dd c2 04 01
RSP: 0018:ffffc900034778d8 EFLAGS: 00010293
RAX: ffffffff8ad4f177 RBX: ffff888022a50000 RCX: ffff88807ea21e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8ad4f033 R09: 1ffffffff1f5a965
R10: dffffc0000000000 R11: fffffbfff1f5a966 R12: dffffc0000000000
R13: ffff888022a50000 R14: ffff88807c98c000 R15: ffff88807c98c000
FS:  0000555573837380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000005fdeb8 CR3: 0000000029ce0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 cfg80211_wext_siwscan+0xcbf/0x10d0 net/wireless/scan.c:3509
 ioctl_standard_iw_point+0x788/0xcb0 net/wireless/wext-core.c:867
 ioctl_standard_call+0xc7/0x290 net/wireless/wext-core.c:1052
 wext_ioctl_dispatch+0x58e/0x640 net/wireless/wext-core.c:1016
 wext_handle_ioctl+0x15f/0x270 net/wireless/wext-core.c:1077
 sock_ioctl+0x17f/0x8e0 net/socket.c:1275
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb389e893a9
Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc48732138 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ffc48732308 RCX: 00007fb389e893a9
RDX: 0000000020000000 RSI: 0000000000008b18 RDI: 0000000000000003
RBP: 00007fb389efc610 R08: 0000000000000000 R09: 00007ffc48732308
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffc487322f8 R14: 0000000000000001 R15: 0000000000000001
 </TASK>


---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@...glegroups.com.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
For information about bisection process see: https://goo.gl/tpsmEJ#bisection

If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title

If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.

If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)

If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report

If you want to undo deduplication, reply with:
#syz undup

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