KASAN: use-after-free Write in __unwind

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	KASAN: use-after-free Write in __unwind_start (3) selinux				1	2224d	2220d	0/26	closed as invalid on 2018/07/17 14:22
upstream	KASAN: use-after-free Write in __unwind_start hardening				1	2331d	2326d	0/26	closed as invalid on 2018/02/01 12:06

IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based  firewall rule not found. Use the iptables CT target to attach helpers instead.
==================================================================
BUG: KASAN: use-after-free in memset include/linux/string.h:330 [inline]
BUG: KASAN: use-after-free in __unwind_start+0x2d/0x330 arch/x86/kernel/unwind_frame.c:389
Write of size 88 at addr ffff8801a9846e60 by task syzkaller660003/6219

CPU: 1 PID: 6219 Comm: syzkaller660003 Not tainted 4.16.0-rc3+ #335
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:

Allocated by task 2956211648:
------------[ cut here ]------------
kernel BUG at mm/slab.c:4406!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 6219 Comm: syzkaller660003 Not tainted 4.16.0-rc3+ #335
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__check_heap_object+0xa7/0xc0 mm/slab.c:4431
RSP: 0018:ffff8801a9845e20 EFLAGS: 00010046
RAX: 0000000000000003 RBX: 1ffff10035308bcb RCX: 000000000000000b
RDX: ffff8801a98445c0 RSI: 0000000000000002 RDI: ffff8801a9845f90
RBP: ffff8801a9845e20 R08: ffffed0035308bf2 R09: ffff8801dac00c40
R10: 00000000000016c6 R11: 0000000000000000 R12: ffff8801a9845f90
R13: 0000000000000002 R14: ffffea0006a61100 R15: ffffea0006a61100
FS:  0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff89ed8b88 CR3: 0000000006e22006 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
Code: 2c 48 c7 c7 3f 71 c6 86 e8 b7 cb 07 00 5d c3 49 8b 91 08 01 00 00 48 29 c7 48 39 d7 77 be 48 01 d0 48 29 c8 48 39 f0 72 b3 5d c3 <0f> 0b 48 c7 c7 3f 71 c6 86 e8 8b cc 07 00 90 90 90 90 90 90 90 
RIP: __check_heap_object+0xa7/0xc0 mm/slab.c:4431 RSP: ffff8801a9845e20
---[ end trace 8f5b8eb895da0bb9 ]---
Kernel panic - not syncing: Fatal exception in interrupt
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..