syzbot


KCSAN: data-race in packet_do_bind / packet_getname (5)
Status: internal: reported on 2021/06/15 14:39
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: e032f7c9c7ce net/packet: annotate accesses to po->ifindex
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: 118d, last: 39d
similar bugs (4):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KCSAN: data-race in packet_do_bind / packet_getname 16 539d 637d 0/22 auto-closed as invalid on 2020/04/11 02:48
upstream KCSAN: data-race in packet_do_bind / packet_getname (3) 8 323d 360d 0/22 auto-closed as invalid on 2020/10/09 06:50
upstream KCSAN: data-race in packet_do_bind / packet_getname (2) 2 432d 454d 0/22 closed as invalid on 2020/06/18 14:24
upstream KCSAN: data-race in packet_do_bind / packet_getname (4) 5 175d 225d 0/22 auto-closed as invalid on 2021/03/06 13:33

Sample crash report:

Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-upstream-kcsan-gce 2021/06/15 09:02 upstream 009c9aa5be65 1ba81399 .config log report info KCSAN: data-race in packet_do_bind / packet_getname
ci2-upstream-kcsan-gce 2021/05/11 23:23 upstream 88b06399c9c7 b3c3bb8e .config log report info KCSAN: data-race in packet_do_bind / packet_getname
ci2-upstream-kcsan-gce 2021/04/07 10:53 upstream 2d743660786e 6a81331a .config log report info KCSAN: data-race in packet_do_bind / packet_getname
ci2-upstream-kcsan-gce 2021/03/28 02:53 upstream 0f4498cef9f5 a8529b82 .config log report info KCSAN: data-race in packet_do_bind / packet_getname