linux-kernel - WARNING in ieee80211_probe

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Message-ID: <0000000000005bac7a05b0fc1ad1@google.com>
Date:   Tue, 06 Oct 2020 01:08:24 -0700
From:   syzbot <syzbot+999fac712d84878a7379@...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 ieee80211_probe_client

Hello,

syzbot found the following issue on:

HEAD commit:    c2568c8c Merge branch 'net-Constify-struct-genl_small_ops'
git tree:       net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=14051a2b900000
kernel config:  https://syzkaller.appspot.com/x/.config?x=1e6c5266df853ae
dashboard link: https://syzkaller.appspot.com/bug?extid=999fac712d84878a7379
compiler:       gcc (GCC) 10.1.0-syz 20200507
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1776330b900000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=171f17ff900000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+999fac712d84878a7379@...kaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 0 PID: 6910 at net/mac80211/cfg.c:3620 ieee80211_probe_client+0x6ed/0x7f0 net/mac80211/cfg.c:3620
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 6910 Comm: syz-executor290 Not tainted 5.9.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x198/0x1fd lib/dump_stack.c:118
 panic+0x382/0x7fb kernel/panic.c:231
 __warn.cold+0x20/0x4b kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:ieee80211_probe_client+0x6ed/0x7f0 net/mac80211/cfg.c:3620
Code: f9 48 c7 c2 20 77 61 89 be 7b 02 00 00 48 c7 c7 80 77 61 89 c6 05 4c 44 80 03 01 e8 82 1a 85 f9 e9 e3 f9 ff ff e8 13 25 9f f9 <0f> 0b 41 bc ea ff ff ff e9 51 fe ff ff e8 91 e8 e0 f9 e9 de fc ff
RSP: 0018:ffffc900056e74f0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888093710000 RCX: ffffffff87d761d8
RDX: ffff888092e18280 RSI: ffffffff87d7629d RDI: 0000000000000005
RBP: ffff88809a47e020 R08: 0000000000000001 R09: ffffffff8d10d9e7
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888089750c80
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
 rdev_probe_client net/wireless/rdev-ops.h:929 [inline]
 nl80211_probe_client+0x3b7/0xc80 net/wireless/nl80211.c:12734
 genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:739
 genl_family_rcv_msg net/netlink/genetlink.c:783 [inline]
 genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:800
 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2489
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:811
 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330
 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919
 sock_sendmsg_nosec net/socket.c:651 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:671
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2353
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2440
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x442169
Code: e8 ac 00 03 00 48 83 c4 18 c3 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 0f 83 7b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fff7f75b898 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000442169
RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000004
RBP: 000000306e616c77 R08: 0000002000000000 R09: 0000002000000000
R10: 0000002000000000 R11: 0000000000000246 R12: 000000000000ee9b
R13: 0000000000000000 R14: 000000000000000c R15: 0000000000000004
Kernel Offset: disabled
Rebooting in 86400 seconds..


---
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