syzbot


KASAN: use-after-free Write in put_ucounts
Status: upstream: reported on 2021/07/17 06:22
Reported-by: syzbot+b6e65bd125a05f803d6b@syzkaller.appspotmail.com
Fix commit: 345daff2e994 ucounts: Fix race condition between alloc_ucounts and put_ucounts
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-qemu2-riscv64 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-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-qemu2-arm32]
First crash: 85d, last: 70d

Sample crash report:

Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce 2021/07/19 13:59 upstream 2734d6c1b1a0 e6a17580 .config log report info KASAN: use-after-free Write in put_ucounts
ci-upstream-kasan-gce-386 2021/07/08 22:00 upstream 3dbdb38e2869 1b20171a .config log report info KASAN: use-after-free Write in put_ucounts
ci-upstream-kasan-gce-386 2021/07/04 13:25 upstream 3dbdb38e2869 55aa55c2 .config log report info KASAN: use-after-free Write in put_ucounts