kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 17687 Comm: syz-executor.3 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:sctp_timeout_obj_to_nlattr+0x96/0x170 net/netfilter/nf_conntrack_proto_sctp.c:628
Code: f3 65 48 8b 14 25 28 00 00 00 48 89 55 d0 31 d2 48 89 85 70 ff ff ff e8 b8 cd d3 fb 48 8b 8d 70 ff ff ff 48 89 d8 48 c1 e8 03 <0f> b6 14 08 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 a3
RSP: 0018:ffff888065f5f3c8 EFLAGS: 00010247
RAX: 0000000000000000 RBX: 0000000000000004 RCX: dffffc0000000000
RDX: 0000000000016f71 RSI: ffffffff85976988 RDI: 1ffff1100cbebe7b
RBP: ffff888065f5f460 R08: ffff88805d34e5c0 R09: ffff8880981985a8
R10: ffffed10130330b4 R11: ffff8880981985a0 R12: ffffffff87e13780
R13: 0000000000000001 R14: ffff88805f6a1500 R15: ffff888065f5f438
FS:  00007f497b497700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4480b9b198 CR3: 00000000a89ce000 CR4: 00000000001426e0
Call Trace:
 cttimeout_default_fill_info net/netfilter/nfnetlink_cttimeout.c:424 [inline]
 cttimeout_default_get+0x69a/0xa80 net/netfilter/nfnetlink_cttimeout.c:471
 nfnetlink_rcv_msg+0xd12/0xfe0 net/netfilter/nfnetlink.c:228
 netlink_rcv_skb+0x180/0x460 net/netlink/af_netlink.c:2454
 nfnetlink_rcv+0x1c0/0x460 net/netfilter/nfnetlink.c:560
 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline]
 netlink_unicast+0x53c/0x720 net/netlink/af_netlink.c:1343
 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xdd/0x130 net/socket.c:632
 ___sys_sendmsg+0x806/0x930 net/socket.c:2115
 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458c29
Code: ad b8 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 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f497b496c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29
RDX: 0000000000000000 RSI: 0000000020dddfc8 RDI: 0000000000000004
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f497b4976d4
R13: 00000000004c6501 R14: 00000000004dae68 R15: 00000000ffffffff
Modules linked in:
kobject: 'vet' (00000000219e68c4): kobject_add_internal: parent: 'net', set: 'devices'
kobject: 'loop4' (00000000336bdfc5): kobject_uevent_env
kobject: 'loop4' (00000000336bdfc5): fill_kobj_path: path = '/devices/virtual/block/loop4'
---[ end trace 880ee6c8d80f495a ]---
kobject: 'vet' (00000000219e68c4): kobject_uevent_env
kobject: 'vet' (00000000219e68c4): fill_kobj_path: path = '/devices/virtual/net/vet'
RIP: 0010:sctp_timeout_obj_to_nlattr+0x96/0x170 net/netfilter/nf_conntrack_proto_sctp.c:628
kobject: 'kvm' (00000000921449e0): kobject_uevent_env
kobject: 'queues' (00000000c63448b6): kobject_add_internal: parent: 'vet', set: '<NULL>'
Code: f3 65 48 8b 14 25 28 00 00 00 48 89 55 d0 31 d2 48 89 85 70 ff ff ff e8 b8 cd d3 fb 48 8b 8d 70 ff ff ff 48 89 d8 48 c1 e8 03 <0f> b6 14 08 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 a3
kobject: 'kvm' (00000000921449e0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'queues' (00000000c63448b6): kobject_uevent_env
kobject: 'queues' (00000000c63448b6): kobject_uevent_env: filter function caused the event to drop!
kobject: 'kvm' (00000000921449e0): kobject_uevent_env
kobject: 'loop4' (00000000336bdfc5): kobject_uevent_env
kobject: 'loop4' (00000000336bdfc5): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'kvm' (00000000921449e0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop0' (00000000e3beb54c): kobject_uevent_env
kobject: 'loop0' (00000000e3beb54c): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'rx-0' (00000000249f88c7): kobject_add_internal: parent: 'queues', set: 'queues'
kobject: 'loop5' (000000008bef5ec5): kobject_uevent_env
kobject: 'kvm' (00000000921449e0): kobject_uevent_env
kobject: 'loop5' (000000008bef5ec5): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'kvm' (00000000921449e0): kobject_uevent_env
kobject: 'kvm' (00000000921449e0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
RSP: 0018:ffff888065f5f3c8 EFLAGS: 00010247
RAX: 0000000000000000 RBX: 0000000000000004 RCX: dffffc0000000000
kobject: 'rx-0' (00000000249f88c7): kobject_uevent_env
kobject: 'rx-0' (00000000249f88c7): fill_kobj_path: path = '/devices/virtual/net/vet/queues/rx-0'
kobject: 'tx-0' (00000000e2593d2f): kobject_add_internal: parent: 'queues', set: 'queues'
kobject: 'tx-0' (00000000e2593d2f): kobject_uevent_env
kobject: 'loop4' (00000000336bdfc5): kobject_uevent_env
kobject: 'kvm' (00000000921449e0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop4' (00000000336bdfc5): fill_kobj_path: path = '/devices/virtual/block/loop4'
RDX: 0000000000016f71 RSI: ffffffff85976988 RDI: 1ffff1100cbebe7b
RBP: ffff888065f5f460 R08: ffff88805d34e5c0 R09: ffff8880981985a8
kobject: 'tx-0' (00000000e2593d2f): fill_kobj_path: path = '/devices/virtual/net/vet/queues/tx-0'
kobject: 'loop4' (00000000336bdfc5): kobject_uevent_env
kobject: 'kvm' (00000000921449e0): kobject_uevent_env
kobject: 'loop4' (00000000336bdfc5): fill_kobj_path: path = '/devices/virtual/block/loop4'
R10: ffffed10130330b4 R11: ffff8880981985a0 R12: ffffffff87e13780
kobject: 'kvm' (00000000921449e0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'batman_adv' (00000000e1061401): kobject_add_internal: parent: 'vet', set: '<NULL>'
R13: 0000000000000001 R14: ffff88805f6a1500 R15: ffff888065f5f438
kobject: 'kvm' (00000000921449e0): kobject_uevent_env
kobject: 'loop2' (0000000010d40abb): kobject_uevent_env
kobject: 'kvm' (00000000921449e0): fill_kobj_path: path = '/devices/virtual/misc/kvm'
FS:  00007f497b497700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
kobject: 'loop2' (0000000010d40abb): fill_kobj_path: path = '/devices/virtual/block/loop2'
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'batman_adv' (00000000e1061401): kobject_uevent_env
CR2: 000000000070d158 CR3: 00000000a89ce000 CR4: 00000000001426e0
kobject: 'loop5' (000000008bef5ec5): kobject_uevent_env
kobject: 'batman_adv' (00000000e1061401): kobject_uevent_env: filter function caused the event to drop!