On Thu, Feb 27, 2020 at 10:29 AM syzbot <syzbot+fcab69d1ada3e8d6f06b@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > > Hello, > > syzbot found the following crash on: > > HEAD commit: 8bbbc5cf kmsan: don't compile memmove > git tree: https://github.com/google/kmsan.git master > console output: https://syzkaller.appspot.com/x/log.txt?x=14394265e00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=cd0e9a6b0e555cc3 > dashboard link: https://syzkaller.appspot.com/bug?extid=fcab69d1ada3e8d6f06b > compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1338127ee00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=161403ede00000 > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+fcab69d1ada3e8d6f06b@xxxxxxxxxxxxxxxxxxxxxxxxx This report says it's uninit in strlen, but there's actually an information leak later on that lets the user read arbitrary data past the non-terminated attr->get_buf.
