From: syzbot <syzbot+cbb5af985601225ceb76@syzkaller.appspotmail.com>
To: davem@davemloft.net, herbert@gondor.apana.org.au,
kuba@kernel.org, kuznet@ms2.inr.ac.ru,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
steffen.klassert@secunet.com, syzkaller-bugs@googlegroups.com,
yoshfuji@linux-ipv6.org
Subject: general protection fault in __xfrm6_tunnel_spi_check
Date: Mon, 20 Jul 2020 21:30:19 -0700 [thread overview]
Message-ID: <000000000000b2848005aaec14c4@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: 4c43049f Add linux-next specific files for 20200716
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=16f786d7100000
kernel config: https://syzkaller.appspot.com/x/.config?x=2c76d72659687242
dashboard link: https://syzkaller.appspot.com/bug?extid=cbb5af985601225ceb76
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+cbb5af985601225ceb76@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xe01ffc0000000004: 0000 [#1] PREEMPT SMP KASAN
KASAN: maybe wild-memory-access in range [0x0100000000000020-0x0100000000000027]
CPU: 0 PID: 11470 Comm: syz-executor.3 Not tainted 5.8.0-rc5-next-20200716-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__xfrm6_tunnel_spi_check+0x1e5/0x330 net/ipv6/xfrm6_tunnel.c:111
Code: 0f 85 3c 01 00 00 48 8b 5b 10 48 85 db 74 44 e8 31 41 7b fa 48 83 eb 10 74 39 e8 26 41 7b fa 48 8d 7b 30 48 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 74 08 3c 03 0f 8e fd 00 00 00 8b 6b 30 44 89
RSP: 0018:ffffc900175df3d0 EFLAGS: 00010202
RAX: 0020000000000004 RBX: 00fffffffffffff0 RCX: ffffc9000f672000
RDX: 0000000000040000 RSI: ffffffff86f8eeba RDI: 0100000000000020
RBP: ffff88805bdfc800 R08: 0000000000000001 R09: ffff888089c1cc10
R10: fffffbfff1571bb9 R11: 0000000000000000 R12: 0000000098f1a001
R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000098f19fff
FS: 00007f1165c1d700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001600 CR3: 0000000092d1e000 CR4: 00000000001526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__xfrm6_tunnel_alloc_spi net/ipv6/xfrm6_tunnel.c:131 [inline]
xfrm6_tunnel_alloc_spi+0x296/0x8a0 net/ipv6/xfrm6_tunnel.c:174
ipcomp6_tunnel_create net/ipv6/ipcomp6.c:84 [inline]
ipcomp6_tunnel_attach net/ipv6/ipcomp6.c:124 [inline]
ipcomp6_init_state net/ipv6/ipcomp6.c:159 [inline]
ipcomp6_init_state+0x2af/0x700 net/ipv6/ipcomp6.c:139
__xfrm_init_state+0x9a6/0x14b0 net/xfrm/xfrm_state.c:2498
xfrm_state_construct net/xfrm/xfrm_user.c:627 [inline]
xfrm_add_sa+0x1db9/0x34f0 net/xfrm/xfrm_user.c:684
xfrm_user_rcv_msg+0x414/0x700 net/xfrm/xfrm_user.c:2684
netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2469
xfrm_netlink_rcv+0x6b/0x90 net/xfrm/xfrm_user.c:2692
netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1329
netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1918
sock_sendmsg_nosec net/socket.c:651 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:671
____sys_sendmsg+0x6e8/0x810 net/socket.c:2362
___sys_sendmsg+0xf3/0x170 net/socket.c:2416
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2449
do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45c1d9
Code: Bad RIP value.
RSP: 002b:00007f1165c1cc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000002a500 RCX: 000000000045c1d9
RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003
RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007ffc3130211f R14: 00007f1165c1d9c0 R15: 000000000078bf0c
Modules linked in:
---[ end trace 21b48c86a3c64819 ]---
RIP: 0010:__xfrm6_tunnel_spi_check+0x1e5/0x330 net/ipv6/xfrm6_tunnel.c:111
Code: 0f 85 3c 01 00 00 48 8b 5b 10 48 85 db 74 44 e8 31 41 7b fa 48 83 eb 10 74 39 e8 26 41 7b fa 48 8d 7b 30 48 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 74 08 3c 03 0f 8e fd 00 00 00 8b 6b 30 44 89
RSP: 0018:ffffc900175df3d0 EFLAGS: 00010202
RAX: 0020000000000004 RBX: 00fffffffffffff0 RCX: ffffc9000f672000
RDX: 0000000000040000 RSI: ffffffff86f8eeba RDI: 0100000000000020
RBP: ffff88805bdfc800 R08: 0000000000000001 R09: ffff888089c1cc10
R10: fffffbfff1571bb9 R11: 0000000000000000 R12: 0000000098f1a001
R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000098f19fff
FS: 00007f1165c1d700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001600 CR3: 0000000092d1e000 CR4: 00000000001526f0
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@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
reply other threads:[~2020-07-21 4:30 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=000000000000b2848005aaec14c4@google.com \
--to=syzbot+cbb5af985601225ceb76@syzkaller.appspotmail.com \
--cc=davem@davemloft.net \
--cc=herbert@gondor.apana.org.au \
--cc=kuba@kernel.org \
--cc=kuznet@ms2.inr.ac.ru \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=steffen.klassert@secunet.com \
--cc=syzkaller-bugs@googlegroups.com \
--cc=yoshfuji@linux-ipv6.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.