syzbot


KASAN: use-after-free Write in alloc_ucounts
Status: upstream: reported syz repro on 2021/07/17 06:21
Reported-by: syzbot+59dd63761094a80ad06d@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-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 ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386]
First crash: 66d, last: 44d
Patch testing requests:
Created Duration User Patch Repo Result
2021/08/14 09:51 15m hdanton@sina.com patch git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 4010a528219e OK

Sample crash report:

Crashes (7):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2021/07/29 17:14 upstream 4010a528219e b44001ce .config log report syz KASAN: use-after-free Write in alloc_ucounts
ci-qemu-upstream 2021/08/03 18:26 upstream d5ad8ec3cfb5 6c236867 .config log report info KASAN: use-after-free Write in alloc_ucounts
ci-upstream-kasan-gce-selinux-root 2021/08/03 07:03 upstream c500bee1c5b2 6c236867 .config log report info KASAN: use-after-free Write in alloc_ucounts
ci-qemu-upstream 2021/07/30 20:20 upstream 4669e13cd67f 6c236867 .config log report info KASAN: use-after-free Write in alloc_ucounts
ci-upstream-kasan-gce-selinux-root 2021/07/29 15:01 upstream 4010a528219e b44001ce .config log report info KASAN: use-after-free Write in alloc_ucounts
ci-upstream-kasan-gce-selinux-root 2021/07/19 10:59 upstream 2734d6c1b1a0 e6a17580 .config log report info KASAN: use-after-free Write in alloc_ucounts
ci-upstream-linux-next-kasan-gce-root 2021/07/13 01:51 linux-next db503865b9ba f415556d .config log report info KASAN: use-after-free Write in alloc_ucounts