netlink: 8 bytes leftover after parsing attributes in process `syz-executor2'. kasan: CONFIG_KASAN_INLINE enabled kernel msg: ebtables bug: please report to author: Num_counters wrong kasan: GPF could be caused by NULL-ptr deref or user memory access *** Guest State *** general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 10575 Comm: syz-executor2 Not tainted 4.19.0-rc4-next-20180921+ #77 CR0: actual=0x0000000000000020, shadow=0x0000000000000000, gh_mask=fffffffffffffff7 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:nla_get_be32 include/net/netlink.h:1106 [inline] RIP: 0010:ctnetlink_alloc_filter+0xb9/0x200 net/netfilter/nf_conntrack_netlink.c:843 Code: 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 57 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6c 24 40 49 8d 7d 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 06 kernel msg: ebtables bug: please report to author: Num_counters wrong RSP: 0018:ffff88019341f1a0 EFLAGS: 00010247 RAX: dffffc0000000000 RBX: ffff8801bbdcabc0 RCX: ffffc90003e7e000 RDX: 0000000000000000 RSI: ffffffff864e6f4d RDI: 0000000000000004 RBP: ffff88019341f1b8 R08: ffff8801be846300 R09: ffffed003b5a5b57 R10: ffffed003b5a5b57 R11: ffff8801dad2dabb R12: ffff88019341f500 R13: 0000000000000000 R14: ffff8801c7d00ff8 R15: ffff8801c7d00fd1 FS: 00007f6d7a5ad700(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000cb9e80 CR3: 00000001d7d68000 CR4: 00000000001426e0 CR4: actual=0x0000000000002040, shadow=0x0000000000000000, gh_mask=ffffffffffffe871 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ctnetlink_start+0x10b/0x1b0 net/netfilter/nf_conntrack_netlink.c:857 __netlink_dump_start+0x43e/0x6f0 net/netlink/af_netlink.c:2312 kobject: 'loop0' (00000000bcf68fc0): kobject_uevent_env netlink_dump_start include/linux/netlink.h:213 [inline] ctnetlink_get_conntrack+0x777/0x9f0 net/netfilter/nf_conntrack_netlink.c:1320 CR3 = 0x0000000000000000 kobject: 'loop0' (00000000bcf68fc0): fill_kobj_path: path = '/devices/virtual/block/loop0' nfnetlink_rcv_msg+0xdd3/0x10c0 net/netfilter/nfnetlink.c:228 RSP = 0x0000000000000000 RIP = 0x000000000000fff0 RFLAGS=0x00000002 DR7 = 0x0000000000000400 Sysenter RSP=0000000000000000 CS:RIP=0000:0000000000000000 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2447 CS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 nfnetlink_rcv+0x1c0/0x4d0 net/netfilter/nfnetlink.c:560 DS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x5a5/0x760 net/netlink/af_netlink.c:1336 SS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1901 ES: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:632 ___sys_sendmsg+0x7fd/0x930 net/socket.c:2117 FS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 GS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 GDTR: limit=0x00000000, base=0x0000000000000000 __sys_sendmsg+0x11d/0x280 net/socket.c:2155 LDTR: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 IDTR: limit=0x00000000, base=0x0000000000000000 __do_sys_sendmsg net/socket.c:2164 [inline] __se_sys_sendmsg net/socket.c:2162 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2162 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 TR: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 EFER = 0x0000000000000000 PAT = 0x0007040600070406 DebugCtl = 0x0000000000000000 DebugExceptions = 0x0000000000000000 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457679 Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f6d7a5acc78 EFLAGS: 00000246 Interruptibility = 00000000 ActivityState = 00000000 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f6d7a5ad6d4 RCX: 0000000000457679 RDX: 0000000000000000 RSI: 0000000020d65000 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d5520 R14: 00000000004c38d2 R15: 0000000000000000 Modules linked in: *** Host State *** ---[ end trace e33aa8bb774b01c8 ]--- kobject: 'loop4' (00000000fffc5bea): kobject_uevent_env RIP: 0010:nla_get_be32 include/net/netlink.h:1106 [inline] RIP: 0010:ctnetlink_alloc_filter+0xb9/0x200 net/netfilter/nf_conntrack_netlink.c:843 kobject: 'loop5' (000000001c585b5b): kobject_uevent_env Code: 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 57 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6c 24 40 49 8d 7d 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 06 RIP = 0xffffffff81212522 RSP = 0xffff88019367f350 kobject: 'loop5' (000000001c585b5b): fill_kobj_path: path = '/devices/virtual/block/loop5' RSP: 0018:ffff88019341f1a0 EFLAGS: 00010247 kobject: 'loop4' (00000000fffc5bea): fill_kobj_path: path = '/devices/virtual/block/loop4' CS=0010 SS=0018 DS=0000 ES=0000 FS=0000 GS=0000 TR=0040 kobject: 'loop1' (000000009ff986ab): kobject_uevent_env FSBase=00007fe6c6557700 GSBase=ffff8801dac00000 TRBase=fffffe0000033000 kobject: 'loop1' (000000009ff986ab): fill_kobj_path: path = '/devices/virtual/block/loop1' RAX: dffffc0000000000 RBX: ffff8801bbdcabc0 RCX: ffffc90003e7e000 GDTBase=fffffe0000001000 IDTBase=fffffe0000000000 RDX: 0000000000000000 RSI: ffffffff864e6f4d RDI: 0000000000000004 CR0=0000000080050033 CR3=00000001ba936000 CR4=00000000001426f0 RBP: ffff88019341f1b8 R08: ffff8801be846300 R09: ffffed003b5a5b57 Sysenter RSP=fffffe0000002200 CS:RIP=0010:ffffffff87e01360 R10: ffffed003b5a5b57 R11: ffff8801dad2dabb R12: ffff88019341f500 EFER = 0x0000000000000d01 PAT = 0x0407050600070106 kobject: 'loop5' (000000001c585b5b): kobject_uevent_env *** Control State *** kobject: 'loop5' (000000001c585b5b): fill_kobj_path: path = '/devices/virtual/block/loop5' PinBased=0000003f CPUBased=b5a06dfa SecondaryExec=000000c2 R13: 0000000000000000 R14: ffff8801c7d00ff8 R15: ffff8801c7d00fd1 EntryControls=0000d1ff ExitControls=002fefff kobject: 'loop5' (000000001c585b5b): kobject_uevent_env ExceptionBitmap=00060042 PFECmask=00000000 PFECmatch=00000000 kobject: 'loop5' (000000001c585b5b): fill_kobj_path: path = '/devices/virtual/block/loop5' FS: 00007f6d7a5ad700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 VMEntry: intr_info=00000000 errcode=00000000 ilen=00000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kobject: 'kvm' (0000000011119b16): kobject_uevent_env CR2: 00007ffd13ab8f68 CR3: 00000001d7d68000 CR4: 00000000001426f0 VMExit: intr_info=00000000 errcode=00000000 ilen=00000000 kobject: 'kvm' (0000000011119b16): fill_kobj_path: path = '/devices/virtual/misc/kvm' DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 reason=80000021 qualification=0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kobject: 'kvm' (0000000011119b16): kobject_uevent_env