From: syzbot <syzbot+ac5c11d2959a8b3c4806@syzkaller.appspotmail.com>
To: alex.aring@gmail.com, davem@davemloft.net, kuba@kernel.org,
linux-kernel@vger.kernel.org, linux-wpan@vger.kernel.org,
netdev@vger.kernel.org, stefan@datenfreihafen.org,
syzkaller-bugs@googlegroups.com
Subject: Re: BUG: unable to handle kernel paging request in nl802154_del_llsec_key
Date: Thu, 18 Feb 2021 12:04:20 -0800 [thread overview]
Message-ID: <0000000000005b7a2a05bba1d762@google.com> (raw)
In-Reply-To: <0000000000006246f105bba148f9@google.com>
syzbot has found a reproducer for the following issue on:
HEAD commit: 3af409ca net: enetc: fix destroyed phylink dereference dur..
git tree: net
console output: https://syzkaller.appspot.com/x/log.txt?x=12ee9f72d00000
kernel config: https://syzkaller.appspot.com/x/.config?x=8cb23303ddb9411f
dashboard link: https://syzkaller.appspot.com/bug?extid=ac5c11d2959a8b3c4806
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1201ac0cd00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1307734ad00000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+ac5c11d2959a8b3c4806@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 8434 Comm: syz-executor691 Not tainted 5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:nla_len include/net/netlink.h:1148 [inline]
RIP: 0010:nla_parse_nested_deprecated include/net/netlink.h:1231 [inline]
RIP: 0010:nl802154_del_llsec_key+0x16d/0x320 net/ieee802154/nl802154.c:1595
Code: 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ab 01 00 00 48 8b 93 28 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 d1 48 c1 e9 03 <0f> b6 0c 01 48 89 d0 83 e0 07 83 c0 01 38 c8 7c 08 84 c9 0f 85 16
RSP: 0018:ffffc90001abf528 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88801847fc00 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff88892647 RDI: ffff88801847fd28
RBP: 1ffff92000357ea6 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff8731625a R11: 0000000000000000 R12: ffff888144a80000
R13: ffff8881448fcbd0 R14: ffffc90001abf8b0 R15: 0000000000000000
FS: 0000000001d99300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000048 CR3: 0000000015550000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
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+0x153/0x420 net/netlink/af_netlink.c:2494
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:652 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:672
____sys_sendmsg+0x6e8/0x810 net/socket.c:2345
___sys_sendmsg+0xf3/0x170 net/socket.c:2399
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2432
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x43f909
Code: 28 c3 e8 5a 14 00 00 66 2e 0f 1f 84 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd3305ef28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 000000000043f909
RDX: 0000000020000000 RSI: 0000000020000140 RDI: 0000000000000003
RBP: 0000000000403370 R08: 000000000000000c R09: 00000000004004a0
R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000403400
R13: 0000000000000000 R14: 00000000004ad018 R15: 00000000004004a0
Modules linked in:
---[ end trace e812501a57df1749 ]---
RIP: 0010:nla_len include/net/netlink.h:1148 [inline]
RIP: 0010:nla_parse_nested_deprecated include/net/netlink.h:1231 [inline]
RIP: 0010:nl802154_del_llsec_key+0x16d/0x320 net/ieee802154/nl802154.c:1595
Code: 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ab 01 00 00 48 8b 93 28 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 d1 48 c1 e9 03 <0f> b6 0c 01 48 89 d0 83 e0 07 83 c0 01 38 c8 7c 08 84 c9 0f 85 16
RSP: 0018:ffffc90001abf528 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88801847fc00 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff88892647 RDI: ffff88801847fd28
RBP: 1ffff92000357ea6 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff8731625a R11: 0000000000000000 R12: ffff888144a80000
R13: ffff8881448fcbd0 R14: ffffc90001abf8b0 R15: 0000000000000000
FS: 0000000001d99300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f152c03e068 CR3: 0000000015550000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
prev parent reply other threads:[~2021-02-18 20:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-18 19:24 BUG: unable to handle kernel paging request in nl802154_del_llsec_key syzbot
2021-02-18 20:04 ` syzbot [this message]
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