syzbot


KCSAN: data-race in packet_do_bind / packet_sendmsg (3)
Status: internal: reported on 2021/06/07 12:42
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: c7d2ef5dd4b0 net/packet: annotate accesses to po->bind
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: 146d, last: 146d
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KCSAN: data-race in packet_do_bind / packet_sendmsg 1 648d 648d 0/22 auto-closed as invalid on 2020/03/29 00:30
upstream KCSAN: data-race in packet_do_bind / packet_sendmsg (2) 2 442d 448d 0/22 auto-closed as invalid on 2020/09/15 15:20

Sample crash report:

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-upstream-kcsan-gce 2021/06/03 12:34 upstream 324c92e5e0ee 0740de69 .config log report info KCSAN: data-race in packet_do_bind / packet_sendmsg