Messages in this thread | | | Date | Wed, 13 Jun 2018 11:13:23 -0700 | Subject | Re: Re: KASAN: slab-out-of-bounds Read in bpf_skb_vlan_push | From | syzbot <> |
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> 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
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