On 9/1/21 21:56, syzbot wrote:
quoted
On 8/30/21 23:19, syzbot wrote:
quoted
Hello,
syzbot found the following issue on:
HEAD commit: eaf2aaec0be4 Merge tag 'wireless-drivers-next-2021-08-29' ..
git tree: net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=1219326d300000
kernel config: https://syzkaller.appspot.com/x/.config?x=d2f9d4c9ff8c5ae7
dashboard link: https://syzkaller.appspot.com/bug?extid=b2be9dd8ca6f6c73ee2d
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=11e6e3a9300000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10de8a6d300000
The issue was bisected to:
commit 2d151d39073aff498358543801fca0f670fea981
Author: Steffen Klassert [off-list ref]
Date: Sun Jul 18 07:11:06 2021 +0000
xfrm: Add possibility to set the default to block if we have no policy
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=114523fe300000
final oops: https://syzkaller.appspot.com/x/report.txt?x=134523fe300000
console output: https://syzkaller.appspot.com/x/log.txt?x=154523fe300000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: <redacted>
Fixes: 2d151d39073a ("xfrm: Add possibility to set the default to block if we have no policy")
netlink: 172 bytes leftover after parsing attributes in process `syz-executor354'.
================================================================================
UBSAN: shift-out-of-bounds in net/xfrm/xfrm_user.c:2010:49
shift exponent 224 is too large for 32-bit type 'int'
#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git
want 2 args (repo, branch), got 3
Whoops... :(
#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git master
With regards,
Pavel Skripkin