syzbot


KASAN: use-after-free Read in srcu_invoke_callbacks
Status: upstream: reported syz repro on 2022/01/11 11:03
Reported-by: syzbot+4f789823c1abc5accf13@syzkaller.appspotmail.com
Fix commit: 850fd2abbe02 block: cleanup q->srcu
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-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 ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-qemu2-riscv64 ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386 ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce]
First crash: 20d, last: 4d11h

Cause bisection: failed (bisect log)
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-54 BUG: unable to handle kernel paging request in srcu_invoke_callbacks 1 161d 161d 0/1 auto-closed as invalid on 2021/12/17 00:29

Sample crash report:

Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2022/01/20 09:20 upstream 1d1df41c5a33 5da9499f .config log report syz KASAN: use-after-free Read in srcu_invoke_callbacks
ci-upstream-linux-next-kasan-gce-root 2022/01/07 11:00 linux-next 3770333b3f8c 6acc789a .config log report syz KASAN: use-after-free Read in srcu_invoke_callbacks
ci-upstream-net-this-kasan-gce 2022/01/23 10:11 net afa114d987c4 214351e1 .config log report info KASAN: use-after-free Read in srcu_invoke_callbacks
ci-upstream-net-this-kasan-gce 2022/01/23 07:47 net afa114d987c4 214351e1 .config log report info KASAN: use-after-free Read in srcu_invoke_callbacks