On Thu, Jan 6, 2022 at 11:17 PM Pavel Skripkin <paskripkin@xxxxxxxxx> wrote: > > On 1/5/22 21:28, syzbot wrote: > > Hello, > > > > syzbot found the following issue on: > > > > HEAD commit: 81c325bbf94e kmsan: hooks: do not check memory in kmsan_in.. > > git tree: https://github.com/google/kmsan.git master > > console output: https://syzkaller.appspot.com/x/log.txt?x=14a07163b00000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=2d8b9a11641dc9aa > > dashboard link: https://syzkaller.appspot.com/bug?extid=003c0a286b9af5412510 > > compiler: clang version 14.0.0 (/usr/local/google/src/llvm-git-monorepo 2b554920f11c8b763cd9ed9003f4e19b919b8e1f), GNU ld (GNU Binutils for Debian) 2.35.2 > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=100165dbb00000 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10c97e77b00000 > > > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > > Reported-by: syzbot+003c0a286b9af5412510@xxxxxxxxxxxxxxxxxxxxxxxxx > > > > Heh, I think, more reports like this will appear soon. Syzbot learned > how to tweak usb read functions return values, I guess? This has been possible long ago. I think these new reports are related to fresh KMSAN changes (and also the fact KMSAN was broken for a while last year, and is now catching up). > #syz test: https://github.com/google/kmsan.git master > > > > With regards, > Pavel Skripkin -- Alexander Potapenko Software Engineer Google Germany GmbH Erika-Mann-Straße, 33 80636 München Geschäftsführer: Paul Manicle, Halimah DeLaine Prado Registergericht und -nummer: Hamburg, HRB 86891 Sitz der Gesellschaft: Hamburg
