Message-ID: <00000000000066c54105b9f8cf2b@google.com>
Date:   Thu, 28 Jan 2021 08:59:26 -0800
From:   syzbot <syzbot+d2d412349f88521938aa@...kaller.appspotmail.com>
To:     davem@...emloft.net, johannes@...solutions.net, kuba@...nel.org,
        linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: WARNING in cfg80211_change_iface

Hello,

syzbot found the following issue on:

HEAD commit:    d1f3bdd4 net: dsa: rtl8366rb: standardize init jam tables
git tree:       net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=14977d10d00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=b5f48fca2e44a9a2
dashboard link: https://syzkaller.appspot.com/bug?extid=d2d412349f88521938aa
compiler:       gcc (GCC) 10.1.0-syz 20200507

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

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d2d412349f88521938aa@...kaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 1 PID: 28772 at net/wireless/util.c:1013 cfg80211_change_iface+0xa10/0xf30 net/wireless/util.c:1013
Modules linked in:
CPU: 1 PID: 28772 Comm: syz-executor.2 Not tainted 5.11.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:cfg80211_change_iface+0xa10/0xf30 net/wireless/util.c:1013
Code: 8d bd e8 05 00 00 be ff ff ff ff e8 2a b4 c5 00 31 ff 41 89 c6 89 c6 e8 2e 72 3d f9 45 85 f6 0f 85 b4 f6 ff ff e8 a0 6a 3d f9 <0f> 0b e9 a8 f6 ff ff e8 94 6a 3d f9 65 ff 05 7d 8e cc 77 48 c7 c0
RSP: 0018:ffffc9000116fbb8 EFLAGS: 00010216
RAX: 0000000000008319 RBX: ffff888017128000 RCX: ffffc9000d850000
RDX: 0000000000040000 RSI: ffffffff88356130 RDI: 0000000000000003
RBP: ffff888054c40000 R08: 0000000000000000 R09: ffffc9000116fc30
R10: ffffffff88356122 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000003 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fa7b69e0700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000050d1b0 CR3: 0000000063569000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 cfg80211_wext_siwmode net/wireless/wext-compat.c:64 [inline]
 __cfg80211_wext_siwmode+0x1bb/0x200 net/wireless/wext-compat.c:1559
 ioctl_standard_call+0xcd/0x1f0 net/wireless/wext-core.c:1016
 wireless_process_ioctl+0xc8/0x4c0 net/wireless/wext-core.c:954
 wext_ioctl_dispatch net/wireless/wext-core.c:987 [inline]
 wext_ioctl_dispatch net/wireless/wext-core.c:975 [inline]
 wext_handle_ioctl+0x26b/0x280 net/wireless/wext-core.c:1048
 sock_ioctl+0x410/0x6a0 net/socket.c:1109
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl fs/ioctl.c:739 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e219
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fa7b69dfc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219
RDX: 0000000020000040 RSI: 0000000000008b06 RDI: 0000000000000003
RBP: 000000000119bfc0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c
R13: 00007fff91257a9f R14: 00007fa7b69e09c0 R15: 000000000119bf8c


---
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