Messages in this thread | | | Subject | Re: KASAN: slab-out-of-bounds Read in bpf_skb_vlan_push | From | Daniel Borkmann <> | Date | Wed, 13 Jun 2018 20:15:03 +0200 |
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On 06/13/2018 08:13 PM, syzbot wrote: >> On 06/13/2018 06:17 PM, syzbot wrote: >>> Hello, > >>> syzbot found the following crash on: > >>> HEAD commit: 75d4e704fa8d netdev-FAQ: clarify DaveM's position for stab.. >>> git tree: bpf-next >>> console output: https://syzkaller.appspot.com/x/log.txt?x=1754783f800000 >>> kernel config: https://syzkaller.appspot.com/x/.config?x=a601a80fec461d44 >>> dashboard link: https://syzkaller.appspot.com/bug?extid=76de61614cb1abdd73fc >>> compiler: gcc (GCC) 8.0.1 20180413 (experimental) >>> syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=12c1e1bf800000 > >>> IMPORTANT: if you fix the bug, please add the following tag to the commit: >>> Reported-by: syzbot+76de61614cb1abdd73fc@syzkaller.appspotmail.com > >>> IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready >>> IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready >>> 8021q: adding VLAN 0 to HW filter on device team0 >>> 8021q: adding VLAN 0 to HW filter on device team0 >>> ================================================================== >>> BUG: KASAN: slab-out-of-bounds in skb_at_tc_ingress include/net/sch_generic.h:535 [inline] >>> BUG: KASAN: slab-out-of-bounds in bpf_push_mac_rcsum net/core/filter.c:1625 [inline] >>> BUG: KASAN: slab-out-of-bounds in ____bpf_skb_vlan_push net/core/filter.c:2446 [inline] >>> BUG: KASAN: slab-out-of-bounds in bpf_skb_vlan_push+0x6b7/0x720 net/core/filter.c:2437 >>> Read of size 5 at addr ffff8801b77347d0 by task syz-executor6/6529 > >> Should be fixed already by: > >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=58990d1ff3f7896ee341030e9a7c2e4002570683 > > >> #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > > want 2 args (repo, branch), got 1
Fair enough ... assumed default would have been master. ;-)
#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
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