From: syzbot <syzbot+9cd5837a045bbee5b810@syzkaller.appspotmail.com>
To: davem@davemloft.net, herbert@gondor.apana.org.au,
kuba@kernel.org, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org, steffen.klassert@secunet.com,
syzkaller-bugs@googlegroups.com
Subject: [syzbot] UBSAN: shift-out-of-bounds in xfrm_set_default
Date: Tue, 27 Jul 2021 05:47:21 -0700 [thread overview]
Message-ID: <0000000000004f5de905c81a45e7@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: 90d856e71443 Add linux-next specific files for 20210723
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=133fd00a300000
kernel config: https://syzkaller.appspot.com/x/.config?x=298516715f6ad5cd
dashboard link: https://syzkaller.appspot.com/bug?extid=9cd5837a045bbee5b810
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1263bba6300000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1066b4d4300000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+9cd5837a045bbee5b810@syzkaller.appspotmail.com
netlink: 228 bytes leftover after parsing attributes in process `syz-executor669'.
================================================================================
UBSAN: shift-out-of-bounds in net/xfrm/xfrm_user.c:1969:18
shift exponent 255 is too large for 32-bit type 'int'
CPU: 0 PID: 8437 Comm: syz-executor669 Not tainted 5.14.0-rc2-next-20210723-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:105
ubsan_epilogue+0xb/0x5a lib/ubsan.c:148
__ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 lib/ubsan.c:327
xfrm_set_default.cold+0x21/0x102 net/xfrm/xfrm_user.c:1969
xfrm_user_rcv_msg+0x430/0xa20 net/xfrm/xfrm_user.c:2864
netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504
xfrm_netlink_rcv+0x6b/0x90 net/xfrm/xfrm_user.c:2886
netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline]
netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340
netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929
sock_sendmsg_nosec net/socket.c:703 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:723
____sys_sendmsg+0x6e8/0x810 net/socket.c:2392
___sys_sendmsg+0xf3/0x170 net/socket.c:2446
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2475
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x43f0d9
Code: 28 c3 e8 2a 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:00007ffc71f859f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043f0d9
RDX: 0000000000000000 RSI: 0000000020000740 RDI: 0000000000000003
RBP: 00000000004030c0 R08: 0000000000000000 R09: 0000000000400488
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000403150
R13: 0000000000000000 R14: 00000000004ad018 R15: 0000000000400488
================================================================================
---
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.
syzbot can test patches for this issue, for details see:
https://goo.gl/tpsmEJ#testing-patches
next reply other threads:[~2021-07-27 12:47 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-27 12:47 syzbot [this message]
2021-07-27 14:43 ` [syzbot] UBSAN: shift-out-of-bounds in xfrm_set_default Pavel Skripkin
2021-07-27 17:25 ` [PATCH] net: xfrm: fix shift-out-of-bounce kernel test robot
2021-07-27 17:25 ` kernel test robot
2021-07-27 17:30 ` Pavel Skripkin
2021-07-27 17:30 ` Pavel Skripkin
2021-07-28 0:13 ` [syzbot] UBSAN: shift-out-of-bounds in xfrm_set_default syzbot
2021-07-28 0:13 ` syzbot
2021-07-27 17:46 ` [PATCH] net: xfrm: fix shift-out-of-bounce kernel test robot
2021-07-27 17:46 ` kernel test robot
2021-07-27 23:28 ` [syzbot] UBSAN: shift-out-of-bounds in xfrm_set_default syzbot
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=0000000000004f5de905c81a45e7@google.com \
--to=syzbot+9cd5837a045bbee5b810@syzkaller.appspotmail.com \
--cc=davem@davemloft.net \
--cc=herbert@gondor.apana.org.au \
--cc=kuba@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=steffen.klassert@secunet.com \
--cc=syzkaller-bugs@googlegroups.com \
/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.