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Date:   Mon, 14 Sep 2020 02:29:18 -0700
From:   syzbot <syzbot+c6912b3cb4479c7fa902@...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: kernel BUG at net/wireless/core.h:LINE!

Hello,

syzbot found the following issue on:

HEAD commit:    e4c26faa Merge tag 'usb-5.9-rc5' of git://git.kernel.org/p..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1130fc43900000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c61610091f4ca8c4
dashboard link: https://syzkaller.appspot.com/bug?extid=c6912b3cb4479c7fa902
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+c6912b3cb4479c7fa902@...kaller.appspotmail.com

------------[ cut here ]------------
kernel BUG at net/wireless/core.h:112!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 16597 Comm: syz-executor.2 Not tainted 5.9.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:wiphy_to_rdev net/wireless/core.h:112 [inline]
RIP: 0010:wiphy_to_rdev net/wireless/core.h:110 [inline]
RIP: 0010:cfg80211_mlme_unregister_socket+0x51e/0xa80 net/wireless/mlme.c:590
Code: 7f 78 0f 94 c3 31 ff 89 de e8 9e 3c f2 f9 84 db 0f 84 c4 fd ff ff e8 51 40 f2 f9 e8 cb 68 7e f9 e9 b5 fd ff ff e8 42 40 f2 f9 <0f> 0b e8 3b 40 f2 f9 65 8b 1d b4 85 7f 78 bf 3f 00 00 00 89 de e8
RSP: 0018:ffffc900160f7bc0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff8880148a0000
RDX: ffff8880295e0040 RSI: ffffffff87820d9e RDI: ffff888000158c10
RBP: ffff888000158c10 R08: 0000000000000001 R09: ffffffff8c5f5a17
R10: fffffbfff18beb42 R11: 0000000000000001 R12: ffff8880295000f8
R13: 00000000d44708d8 R14: ffff888000158c10 R15: 0000000000000000
FS:  000000000195a940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000016a3b73 CR3: 00000002184e8000 CR4: 00000000001526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 nl80211_netlink_notify net/wireless/nl80211.c:17292 [inline]
 nl80211_netlink_notify+0x377/0x970 net/wireless/nl80211.c:17265
 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83
 __blocking_notifier_call_chain kernel/notifier.c:284 [inline]
 __blocking_notifier_call_chain kernel/notifier.c:271 [inline]
 blocking_notifier_call_chain kernel/notifier.c:295 [inline]
 blocking_notifier_call_chain+0x67/0x90 kernel/notifier.c:292
 netlink_release+0xc51/0x1cf0 net/netlink/af_netlink.c:775
 __sock_release+0xcd/0x280 net/socket.c:596
 sock_close+0x18/0x20 net/socket.c:1277
 __fput+0x285/0x920 fs/file_table.c:281
 task_work_run+0xdd/0x190 kernel/task_work.c:141
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:163 [inline]
 exit_to_user_mode_prepare+0x1e1/0x200 kernel/entry/common.c:190
 syscall_exit_to_user_mode+0x7e/0x2e0 kernel/entry/common.c:265
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x416f41
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:000000000169fbe0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000416f41
RDX: 0000000000000000 RSI: ffffffff87f73c69 RDI: 0000000000000004
RBP: 0000000000000001 R08: ffffffff8134b98a R09: 00000000274ea8f8
R10: 000000000169fcd0 R11: 0000000000000293 R12: 000000000118d940
R13: 000000000118d940 R14: ffffffffffffffff R15: 000000000118d12c
Modules linked in:
---[ end trace a8a42bc9a64facd3 ]---
RIP: 0010:wiphy_to_rdev net/wireless/core.h:112 [inline]
RIP: 0010:wiphy_to_rdev net/wireless/core.h:110 [inline]
RIP: 0010:cfg80211_mlme_unregister_socket+0x51e/0xa80 net/wireless/mlme.c:590
Code: 7f 78 0f 94 c3 31 ff 89 de e8 9e 3c f2 f9 84 db 0f 84 c4 fd ff ff e8 51 40 f2 f9 e8 cb 68 7e f9 e9 b5 fd ff ff e8 42 40 f2 f9 <0f> 0b e8 3b 40 f2 f9 65 8b 1d b4 85 7f 78 bf 3f 00 00 00 89 de e8
RSP: 0018:ffffc900160f7bc0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff8880148a0000
RDX: ffff8880295e0040 RSI: ffffffff87820d9e RDI: ffff888000158c10
RBP: ffff888000158c10 R08: 0000000000000001 R09: ffffffff8c5f5a17
R10: fffffbfff18beb42 R11: 0000000000000001 R12: ffff8880295000f8
R13: 00000000d44708d8 R14: ffff888000158c10 R15: 0000000000000000
FS:  000000000195a940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30e29000 CR3: 00000002184e8000 CR4: 00000000001526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


---
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.

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