Hello, syzbot found the following issue on: HEAD commit: 68845a55 Merge branch 'akpm' into master (patches from And.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13668964900000 kernel config: https://syzkaller.appspot.com/x/.config?x=f87a5e4232fdb267 dashboard link: https://syzkaller.appspot.com/bug?extid=a450cb4aa95912e62487 compiler: gcc (GCC) 10.1.0-syz 20200507 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a450cb4aa95912e62487@xxxxxxxxxxxxxxxxxxxxxxxxx ================================================================== BUG: KASAN: vmalloc-out-of-bounds in get_counters+0x593/0x610 net/ipv6/netfilter/ip6_tables.c:780 Read of size 8 at addr ffffc9000528b048 by task syz-executor.1/6968 CPU: 1 PID: 6968 Comm: syz-executor.1 Not tainted 5.8.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 print_address_description.constprop.0.cold+0x5/0x436 mm/kasan/report.c:383 __kasan_report mm/kasan/report.c:513 [inline] kasan_report.cold+0x1f/0x37 mm/kasan/report.c:530 get_counters+0x593/0x610 net/ipv6/netfilter/ip6_tables.c:780 do_ip6t_get_ctl+0x516/0x910 net/ipv6/netfilter/ip6_tables.c:821 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:122 ipv6_getsockopt+0x1bf/0x270 net/ipv6/ipv6_sockglue.c:1468 tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:3893 __sys_getsockopt+0x14b/0x2e0 net/socket.c:2172 __do_sys_getsockopt net/socket.c:2187 [inline] __se_sys_getsockopt net/socket.c:2184 [inline] __x64_sys_getsockopt+0xba/0x150 net/socket.c:2184 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45ee7a Code: Bad RIP value. RSP: 002b:0000000000c9f618 EFLAGS: 00000212 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 0000000000c9f640 RCX: 000000000045ee7a RDX: 0000000000000041 RSI: 0000000000000029 RDI: 0000000000000003 RBP: 0000000000744ca0 R08: 0000000000c9f63c R09: 0000000000004000 R10: 0000000000c9f740 R11: 0000000000000212 R12: 0000000000000003 R13: 0000000000000000 R14: 0000000000000029 R15: 00000000007445e0 Memory state around the buggy address: ffffc9000528af00: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 ffffc9000528af80: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 >ffffc9000528b000: 00 00 00 00 00 00 00 00 f9 f9 f9 f9 f9 f9 f9 f9 ^ ffffc9000528b080: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 ffffc9000528b100: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 ================================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
