syzbot


KASAN: use-after-free Read in bdev_free_inode
Status: upstream: reported syz repro on 2021/09/19 13:35
Reported-by: syzbot+8281086e8a6fbfbd952a@syzkaller.appspotmail.com
Fix commit: 06cc978d3ff2 block: genhd: fix double kfree() in __alloc_disk_node()
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte 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-riscv64]
First crash: 82d, last: 58d

Cause bisection: failed (bisect log)
Patch testing requests:
Created Duration User Patch Repo Result
2021/10/09 09:48 16m penguin-kernel@i-love.sakura.ne.jp patch upstream 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 2021/10/09 04:53 upstream 741668ef7832 efe0f24d .config log report syz KASAN: use-after-free Read in bdev_free_inode
ci-upstream-kasan-gce-smack-root 2021/10/04 11:20 upstream 9e1ff307c779 ce697b49 .config log report info KASAN: use-after-free Read in bdev_free_inode
ci-upstream-kasan-gce-smack-root 2021/09/27 16:15 upstream 5816b3e6577e 78494d16 .config log report info KASAN: use-after-free Read in bdev_free_inode
ci-upstream-kasan-gce-root 2021/09/16 07:44 upstream b7213ffa0e58 07e953c1 .config log report info KASAN: use-after-free Read in bdev_free_inode
ci-upstream-kasan-gce 2021/09/15 12:17 upstream 3ca706c189db 07e953c1 .config log report info KASAN: use-after-free Read in bdev_free_inode
ci-upstream-kasan-gce-386 2021/10/05 00:20 upstream 84b3e42564ac ce697b49 .config log report info KASAN: use-after-free Read in bdev_free_inode
ci-upstream-net-kasan-gce 2021/09/20 20:39 net-next 85c698863c15 af796c18 .config log report info KASAN: use-after-free Read in bdev_free_inode