syzbot


kernel BUG in llc_sap_action_send_xid_c
Status: upstream: reported C repro on 2021/04/09 17:58
Reported-by: syzbot+5e5a981ad7cc54c4b2b4@syzkaller.appspotmail.com
Fix commit: c7c9d2102c9c net: llc: fix skb_over_panic
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-upstream-bpf-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-this-kasan-gce ci2-upstream-kcsan-gce], missing on: [ci-qemu2-arm32 ci-qemu2-riscv64 ci-upstream-bpf-next-kasan-gce ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386 ci-upstream-net-kasan-gce ci2-upstream-usb]
First crash: 139d, last: 5d03h

Cause bisection: failed (bisect log)
similar bugs (11):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 kernel BUG at net/core/skbuff.c:LINE! C unreliable 487 6d07h 826d 0/1 upstream: reported C repro on 2019/04/27 20:12
linux-4.14 kernel BUG at net/core/skbuff.c:LINE! C 2829 13d 841d 0/1 upstream: reported C repro on 2019/04/12 15:43
android-44 kernel BUG at net/core/skbuff.c:LINE! C 79 617d 843d 0/2 public: reported C repro on 2019/04/11 08:44
android-54 kernel BUG in pfkey_send_acquire syz 32 168d 195d 0/1 upstream: reported syz repro on 2021/01/17 15:19
upstream kernel BUG at net/core/skbuff.c:LINE! (2) C 562 1281d 1370d 4/22 fixed on 2018/01/29 03:39
android-54 kernel BUG at net/core/skbuff.c:LINE! C 104 5d03h 567d 0/1 upstream: reported C repro on 2020/01/12 09:43
android-414 kernel BUG at net/core/skbuff.c:LINE! C 2743 606d 843d 0/1 public: reported C repro on 2019/04/11 00:00
upstream kernel BUG at net/core/skbuff.c:LINE! (3) C done 4399 159d 1276d 21/22 fixed on 2021/03/10 01:48
upstream kernel BUG at net/core/skbuff.c:LINE! 5 1377d 1447d 3/22 fixed on 2017/10/27 10:10
linux-4.19 kernel BUG in pfkey_send_acquire C done 56 166d 195d 1/1 fixed on 2021/03/18 08:30
android-49 kernel BUG at net/core/skbuff.c:LINE! C 391 606d 842d 0/3 public: reported C repro on 2019/04/12 00:00
Patch testing requests:
Created Duration User Patch Repo Result
2021/07/24 20:00 16m paskripkin@gmail.com patch upstream OK

Sample crash report:

Crashes (27):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-this-kasan-gce 2021/04/09 09:43 net 864db232dc70 6a81331a .config log report syz C kernel BUG in llc_sap_action_send_xid_c
ci-upstream-net-kasan-gce 2021/04/09 08:58 net-next 4438669eb703 6a81331a .config log report syz C kernel BUG in llc_sap_action_send_xid_c
ci-upstream-net-this-kasan-gce 2021/07/27 08:29 net 92766c4628ea fd511809 .config log report info kernel BUG in llc_sap_action_send_xid_c
ci-upstream-net-this-kasan-gce 2021/07/03 01:29 net dbe69e433722 55aa55c2 .config log report info kernel BUG in llc_sap_action_send_xid_c
ci-upstream-net-this-kasan-gce 2021/03/15 05:29 net 6577b9a551ae cc1cff8f .config log report info kernel BUG in llc_sap_action_send_xid_c
ci-upstream-net-kasan-gce 2021/07/11 14:11 net-next 5e437416ff66 8f5a7b8c .config log report info kernel BUG in llc_sap_action_send_xid_c
ci-upstream-net-kasan-gce 2021/05/15 07:18 net-next 30515832e987 8bdd5343 .config log report info kernel BUG in llc_sap_action_send_xid_c
ci-upstream-net-kasan-gce 2021/04/11 21:35 net-next cbd312539284 bfeda1b1 .config log report info kernel BUG in llc_sap_action_send_xid_c
ci-upstream-net-kasan-gce 2021/04/09 08:24 net-next 4438669eb703 6a81331a .config log report info kernel BUG in llc_sap_action_send_xid_c
ci-qemu-upstream 2021/07/23 01:54 upstream 9bead1b58c4c bc5f1d88 .config log report info kernel BUG in pskb_expand_head
ci-upstream-kasan-gce-smack-root 2021/07/21 21:33 upstream 8cae8cd89f05 29c3f20f .config log report info kernel BUG in isotp_rcv
ci-upstream-kasan-gce-selinux-root 2021/06/20 21:55 upstream cba5e97280f5 aba2b2fb .config log report info kernel BUG in isotp_rcv
ci-upstream-net-this-kasan-gce 2021/07/23 20:23 net 9f42f674a892 bc5f1d88 .config log report info kernel BUG in isotp_rcv
ci-upstream-net-this-kasan-gce 2021/07/16 11:46 net 65875073eddd f115ae98 .config log report info kernel BUG in fou_build_udp
ci-upstream-net-this-kasan-gce 2021/07/05 16:02 net dbe69e433722 55aa55c2 .config log report info kernel BUG in isotp_rcv
ci-upstream-net-this-kasan-gce 2021/06/26 02:48 net be7f62eebaff ae6bf8dd .config log report info kernel BUG in ip6_mc_hdr
ci-upstream-net-this-kasan-gce 2021/05/03 12:32 net bbd6f0a94813 77e2b668 .config log report info kernel BUG in ip6_mc_hdr
ci-upstream-net-kasan-gce 2021/07/04 09:46 net-next 5e437416ff66 55aa55c2 .config log report info kernel BUG in fou_build_udp
ci-upstream-net-kasan-gce 2021/06/30 18:13 net-next b6df00789e28 84fd4c77 .config log report info kernel BUG in fou_build_udp
ci-upstream-net-kasan-gce 2021/06/27 02:06 net-next ff8744b5eb11 9d2ab5df .config log report info kernel BUG in fou_build_udp
ci-upstream-net-kasan-gce 2021/06/20 14:03 net-next adc2e56ebe63 aba2b2fb .config log report info kernel BUG in isotp_rcv
ci-upstream-net-kasan-gce 2021/06/09 10:56 net-next 5552571c657d 5c2fe346 .config log report info kernel BUG in isotp_rcv
ci-upstream-net-kasan-gce 2021/06/01 14:16 net-next e099f3e8b71c 032639db .config log report info kernel BUG in fou_build_udp
ci-upstream-net-kasan-gce 2021/05/29 03:31 net-next 38e9673ce08f 858ea628 .config log report info kernel BUG in fou_build_udp
ci-upstream-net-kasan-gce 2021/05/27 09:23 net-next c7a551b2e44a 858ea628 .config log report info kernel BUG in fou_build_udp
ci-upstream-net-kasan-gce 2021/05/23 02:10 net-next f5120f599880 3c7fef33 .config log report info kernel BUG in ip6_mc_hdr
ci-upstream-net-kasan-gce 2021/03/29 15:30 net-next 72642f4127c3 a8529b82 .config log report info kernel BUG in ip6_mc_hdr