syzbot


kernel BUG in put_ucounts
Status: upstream: reported on 2021/07/20 08:22
Reported-by: syzbot+6cd79f45bb8fa1c9eeae@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: 69d, last: 4h14m
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG at mm/slub.c:LINE! 6 1127d 1175d 0/22 closed as invalid on 2018/09/05 12:51

Sample crash report:

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce 2021/09/27 19:26 upstream 5816b3e6577e 78494d16 .config log report info kernel BUG in put_ucounts
ci-upstream-kasan-gce-386 2021/07/20 07:11 upstream 2734d6c1b1a0 bc48c9ab .config log report info kernel BUG in put_ucounts