syzbot


INFO: rcu detected stall in sys_recvmmsg
Status: upstream: reported C repro on 2021/09/22 00:13
Reported-by: syzbot+3360da629681aa0d22fe@syzkaller.appspotmail.com
Fix commit: 612f71d7328c mptcp: fix possible stall on recvmsg()
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-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-riscv64]
First crash: 75d, last: 29d

Cause bisection: introduced by (bisect log) :
commit 020250f31c4c75ac7687a673e29c00786582a5f4
Author: Dmitry Kadashev <dkadashev@gmail.com>
Date: Thu Jul 8 06:34:43 2021 +0000

  namei: make do_linkat() take struct filename

Crash: KASAN: use-after-free Read in __d_alloc (log)
Repro: C syz .config
Patch testing requests:
Created Duration User Patch Repo Result
2021/09/23 13:50 12m pabeni@redhat.com patch upstream OK
2021/09/22 17:25 15m pabeni@redhat.com patch upstream OK

Sample crash report:

Crashes (51):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2021/09/20 23:38 linux-next 1f77990c4b79 af796c18 .config log report syz C INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/20 21:02 linux-next 1f77990c4b79 af796c18 .config log report syz C INFO: rcu detected stall in sys_recvmmsg
ci-upstream-kasan-gce-smack-root 2021/11/02 14:51 upstream bfc484fe6abb 098b5d53 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-kasan-gce-root 2021/09/17 09:25 upstream bdb575f87217 5b989942 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/10/06 16:40 linux-next 0dda5ee37364 0a63fd36 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/10/05 16:22 linux-next 29616f67fcbd 0a63fd36 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/10/05 14:42 linux-next 29616f67fcbd ce697b49 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/10/04 19:15 linux-next a25006a77348 ce697b49 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/10/04 14:19 linux-next a25006a77348 ce697b49 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/10/04 08:32 linux-next a25006a77348 ce697b49 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/10/04 04:35 linux-next a25006a77348 db0f5787 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/10/02 06:58 linux-next a25006a77348 db0f5787 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/10/01 12:55 linux-next a25006a77348 1d849ab4 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/29 16:47 linux-next bf5b1e621a51 be530f6c .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/29 15:22 linux-next bf5b1e621a51 be530f6c .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/28 22:58 linux-next bf5b1e621a51 d82cb927 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/28 22:50 linux-next bf5b1e621a51 d82cb927 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/28 22:49 linux-next bf5b1e621a51 d82cb927 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/28 15:53 linux-next bf5b1e621a51 d82cb927 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/28 05:14 linux-next bf5b1e621a51 78494d16 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/24 15:14 linux-next 5a5d008887b4 8cac236e .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/24 13:30 linux-next 5a5d008887b4 8cac236e .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/24 10:21 linux-next 5a5d008887b4 8cac236e .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/24 07:15 linux-next 5a5d008887b4 8cac236e .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/24 05:33 linux-next 5a5d008887b4 8cac236e .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/24 03:59 linux-next bc5aa70f2699 8cac236e .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/23 22:37 linux-next bc5aa70f2699 8cac236e .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/23 22:30 linux-next bc5aa70f2699 8cac236e .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/23 08:04 linux-next bc5aa70f2699 8cac236e .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/23 01:14 linux-next e90f9946ba28 8cac236e .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/23 00:30 linux-next e90f9946ba28 8cac236e .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/23 00:29 linux-next e90f9946ba28 8cac236e .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/23 00:29 linux-next e90f9946ba28 8cac236e .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/23 00:21 linux-next e90f9946ba28 8cac236e .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/23 00:18 linux-next e90f9946ba28 8cac236e .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/22 17:39 linux-next e90f9946ba28 8cac236e .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/21 21:16 linux-next 83fa5857d812 169724fe .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/21 11:45 linux-next 83fa5857d812 af796c18 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/20 16:45 linux-next 1f77990c4b79 af796c18 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/20 16:35 linux-next 1f77990c4b79 af796c18 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/20 16:20 linux-next 1f77990c4b79 af796c18 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/20 16:04 linux-next 1f77990c4b79 af796c18 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/20 14:37 linux-next 1f77990c4b79 af796c18 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/20 14:26 linux-next 1f77990c4b79 af796c18 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/20 14:19 linux-next 1f77990c4b79 af796c18 .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/20 13:24 linux-next 1f77990c4b79 70b76c1d .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/20 13:10 linux-next 1f77990c4b79 70b76c1d .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/20 13:04 linux-next 1f77990c4b79 70b76c1d .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/20 13:02 linux-next 1f77990c4b79 70b76c1d .config log report info INFO: rcu detected stall in sys_recvmmsg
ci-upstream-linux-next-kasan-gce-root 2021/09/20 13:55 linux-next 1f77990c4b79 af796c18 .config log report info BUG: soft lockup in sys_recvmmsg