loop4: p1 start 1 is beyond EOD, truncated kasan: CONFIG_KASAN_INLINE enabled loop4: p2 start 101 is beyond EOD, truncated kasan: GPF could be caused by NULL-ptr deref or user memory access loop4: p3 start 201 is beyond EOD, truncated general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 15993 Comm: syz-executor.0 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:ffff888058d473c8 EFLAGS: 00010247 RAX: 0000000000000000 RBX: 0000000000000004 RCX: dffffc0000000000 RDX: 0000000000040000 RSI: ffffffff85976988 RDI: 1ffff1100b1a8e7b RBP: ffff888058d47460 R08: ffff8880a16b83c0 R09: ffff8880813a63e8 R10: ffffed1010274c7c R11: ffff8880813a63e0 R12: ffffffff87e13780 R13: 0000000000000001 R14: ffff888093bbecc0 R15: ffff888058d47438 FS: 00007f54f1d78700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fddf08966f0 CR3: 0000000073cfa000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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:00007f54f1d77c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29 RDX: 0000000000000000 RSI: 0000000020dddfc8 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f54f1d786d4 R13: 00000000004c6501 R14: 00000000004dae68 R15: 00000000ffffffff Modules linked in: loop4: p4 start 301 is beyond EOD, truncated chnl_net:chnl_flowctrl_cb(): NET flowctrl func called flow: CLOSE/DEINIT kobject: 'loop3' (00000000f8bd1f72): kobject_uevent_env kobject: 'loop3' (00000000f8bd1f72): fill_kobj_path: path = '/devices/virtual/block/loop3' ---[ end trace 91064f6f616b8a5c ]--- chnl_net:chnl_net_open(): state disconnected RIP: 0010:sctp_timeout_obj_to_nlattr+0x96/0x170 net/netfilter/nf_conntrack_proto_sctp.c:628 A link change request failed with some changes committed already. Interface caif0 may have been left with an inconsistent configuration, please check. 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 IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready RSP: 0018:ffff888058d473c8 EFLAGS: 00010247 chnl_net:chnl_net_open(): err: Unable to register and open device, Err:-19 caif:caif_disconnect_client(): nothing to disconnect RAX: 0000000000000000 RBX: 0000000000000004 RCX: dffffc0000000000 RDX: 0000000000040000 RSI: ffffffff85976988 RDI: 1ffff1100b1a8e7b RBP: ffff888058d47460 R08: ffff8880a16b83c0 R09: ffff8880813a63e8 chnl_net:chnl_flowctrl_cb(): NET flowctrl func called flow: CLOSE/DEINIT chnl_net:chnl_net_open(): state disconnected R10: ffffed1010274c7c R11: ffff8880813a63e0 R12: ffffffff87e13780 A link change request failed with some changes committed already. Interface caif0 may have been left with an inconsistent configuration, please check. kobject: 'loop4' (00000000b0fefa65): kobject_uevent_env R13: 0000000000000001 R14: ffff888093bbecc0 R15: ffff888058d47438 kobject: 'loop4' (00000000b0fefa65): fill_kobj_path: path = '/devices/virtual/block/loop4' FS: 00007f54f1d78700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 __loop_clr_fd: partition scan of loop4 failed (rc=0) kobject: 'loop2' (000000003590b2f2): kobject_uevent_env kobject: 'loop2' (000000003590b2f2): fill_kobj_path: path = '/devices/virtual/block/loop2' CR2: 00007ffd41840bbc CR3: 0000000073cfa000 CR4: 00000000001406e0 kobject: 'loop1' (000000001b80c93d): kobject_uevent_env kobject: 'loop1' (000000001b80c93d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000080327955): kobject_uevent_env kobject: 'loop5' (0000000080327955): fill_kobj_path: path = '/devices/virtual/block/loop5' DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kobject: 'loop4' (00000000b0fefa65): kobject_uevent_env