syzbot


KASAN: null-ptr-deref Write in dst_release (3)
Status: internal: reported on 2021/12/16 07:16
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: e28587cc491e sit: do not call ipip6_dev_free() from sit_init_net()
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-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 ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386]
First crash: 39d, last: 39d
similar bugs (3):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KASAN: null-ptr-deref Write in dst_release (2) syz error 148 44d 294d 0/22 closed as invalid on 2021/12/14 20:12
upstream KASAN: null-ptr-deref Write in dst_release 27 951d 1113d 0/22 auto-closed as invalid on 2019/10/25 08:50
upstream KASAN: user-memory-access Write in dst_release 18 955d 1113d 0/22 auto-closed as invalid on 2019/10/25 08:49

Sample crash report:

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce 2021/12/16 07:15 upstream 2b14864acbaa 572bcb40 .config log report info KASAN: null-ptr-deref Write in dst_release
ci-upstream-net-this-kasan-gce 2021/12/16 14:25 net ef8a0f6eab1c 8dd6a5e3 .config log report info KASAN: user-memory-access Write in dst_release