syzbot


WARNING: suspicious RCU usage in do_recvmmsg
Status: internal: reported on 2021/05/15 15:38
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: 3066820034b5 rcu: Reject RCU_LOCKDEP_WARN() false positives
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-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 ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386]
First crash: 78d, last: 52d

Sample crash report:

Crashes (8):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2021/06/10 15:43 upstream cd1245d75ce9 1ba81399 .config log report info WARNING: suspicious RCU usage in do_recvmmsg
ci-upstream-kasan-gce-selinux-root 2021/06/10 04:56 upstream cd1245d75ce9 1ba81399 .config log report info WARNING: suspicious RCU usage in do_recvmmsg
ci-upstream-kasan-gce-smack-root 2021/06/09 15:52 upstream 368094df48e6 84fe5d96 .config log report info WARNING: suspicious RCU usage in do_recvmmsg
ci-upstream-kasan-gce-smack-root 2021/06/08 07:04 upstream 614124bea77e b718257f .config log report info WARNING: suspicious RCU usage in do_recvmmsg
ci-upstream-kasan-gce-smack-root 2021/06/04 13:20 upstream f88cd3fb9df2 966a236b .config log report info WARNING: suspicious RCU usage in do_recvmmsg
ci-upstream-kasan-gce-smack-root 2021/05/30 13:14 upstream 6799d4f2da49 325a8dab .config log report info WARNING: suspicious RCU usage in do_recvmmsg
ci-upstream-kasan-gce-smack-root 2021/05/27 00:22 upstream 7ac3a1c1ae51 858ea628 .config log report info WARNING: suspicious RCU usage in do_recvmmsg
ci-upstream-kasan-gce-smack-root 2021/05/15 15:37 upstream 25a1298726e9 93f844de .config log report info WARNING: suspicious RCU usage in do_recvmmsg