syzbot


KCSAN: data-race in __fat_write_inode / fat12_ent_get
Status: upstream: reported on 2020/04/03 12:35
Reported-by: syzbot+6f1624f937d9d6911e2d@syzkaller.appspotmail.com
Fix commit: fat: don't allow to mount if the FAT length == 0
Patched on: [ci-upstream-linux-next-kasan-gce-root], missing on: [ci-qemu-upstream ci-qemu-upstream-386 ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386 ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb]
First crash: 111d, last: 67d

Sample crash report:

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci2-upstream-kcsan-gce 2020/03/28 03:08 https://github.com/google/ktsan.git kcsan 40959e34 831e9a81 .config log report hirofumi@mail.parknet.co.jp, linux-kernel@vger.kernel.org
ci2-upstream-kcsan-gce 2020/02/12 05:58 https://github.com/google/ktsan.git kcsan f60f0f54 a75b198c .config log report hirofumi@mail.parknet.co.jp, linux-kernel@vger.kernel.org