BUG: unable to handle kernel NULL pointer dereference sctp_copy_local_addr_list+0x499/0x690 net/sctp/protocol.c:180 at 0000000000000000 PGD 1cf037067 P4D 1cf037067 PUD 1b503f067 PMD 0 sctp_copy_one_addr+0x5d/0x170 net/sctp/bind_addr.c:449 Oops: 0010 [#1] SMP KASAN CPU: 0 PID: 5636 Comm: syz-executor4 Not tainted 4.17.0+ #83 sctp_bind_addr_copy+0x16b/0x45b net/sctp/bind_addr.c:71 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010: (null) Code: Bad RIP value. sctp_assoc_set_bind_addr_from_ep+0x165/0x1c0 net/sctp/associola.c:1585 RSP: 0018:ffff8801947b7590 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8801ca2cc800 RCX: 1ffffffff10ea785 sctp_sendmsg_new_asoc+0x3c1/0x1120 net/sctp/socket.c:1744 RDX: ffff8801947b7ab0 RSI: ffff8801ceb97a40 RDI: ffff8801aa73e780 RBP: ffff8801947b7700 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff100328f6eb7 R13: ffff8801947b7ab0 R14: ffff8801ca2cc812 R15: ffff8801ca2ccc58 FS: 00007faf15285700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 00000001d6f28000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sctp_sendmsg+0x1888/0x1d70 net/sctp/socket.c:2097 inet_sendmsg+0x19f/0x690 net/ipv4/af_inet.c:798 sock_poll+0x1d1/0x710 net/socket.c:1156 sock_sendmsg_nosec net/socket.c:633 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:643 vfs_poll+0x77/0x2a0 fs/select.c:40 ___sys_sendmsg+0x525/0x940 net/socket.c:2149 do_pollfd fs/select.c:848 [inline] do_poll fs/select.c:896 [inline] do_sys_poll+0x6fd/0x1100 fs/select.c:990 __sys_sendmmsg+0x240/0x6f0 net/socket.c:2244 __do_sys_sendmmsg net/socket.c:2273 [inline] __se_sys_sendmmsg net/socket.c:2270 [inline] __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2270 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 __do_sys_poll fs/select.c:1048 [inline] __se_sys_poll fs/select.c:1036 [inline] __x64_sys_poll+0x189/0x510 fs/select.c:1036 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4559f9 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 Code: 1d ba fb ff c3 entry_SYSCALL_64_after_hwframe+0x49/0xbe 66 2e RIP: 0033:0x4559f9 0f Code: 1f 1d 84 ba 00 fb 00 ff 00 c3 00 66 00 2e 66 0f 90 1f 48 84 89 00 f8 00 48 00 89 00 f7 00 48 66 89 90 d6 48 48 89 89 f8 ca 48 4d 89 89 f7 c2 48 4d 89 89 d6 c8 48 4c 89 8b ca 4c 4d 24 89 08 c2 0f 4d 05 89 <48> c8 3d 4c 01 8b f0 4c ff 24 08 ff 0f 0f 05 83 <48> eb 3d b9 01 fb f0 ff ff c3 ff 66 0f 2e 83 0f eb 1f b9 84 fb 00 ff 00 c3 00 66 00 2e 0f RSP: 002b:00007efd33f28c68 EFLAGS: 00000246 1f ORIG_RAX: 0000000000000133 84 RAX: ffffffffffffffda RBX: 00007efd33f296d4 RCX: 00000000004559f9 00 RDX: 0000000000000001 RSI: 0000000020006f00 RDI: 0000000000000013 00 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 00 00 R10: 0000000000040040 R11: 0000000000000246 R12: 0000000000000014 RSP: 002b:00007faf15284c68 EFLAGS: 00000246 R13: 00000000004c0959 R14: 00000000004d02e0 R15: 0000000000000040 ORIG_RAX: 0000000000000007 RAX: ffffffffffffffda RBX: 00007faf152856d4 RCX: 00000000004559f9 RDX: 0000000000000003 RSI: 2000000000000112 RDI: 0000000020000040 RBP: 000000000072c0b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004c047c R14: 00000000004cf968 R15: 0000000000000003 Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) CR2: 0000000000000000 ---[ end trace ff18eee4e89cdc2a ]--- RIP: 0010: (null) Code: Bad RIP value. RSP: 0018:ffff8801947b7590 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8801ca2cc800 RCX: 1ffffffff10ea785 RDX: ffff8801947b7ab0 RSI: ffff8801ceb97a40 RDI: ffff8801aa73e780 RBP: ffff8801947b7700 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff100328f6eb7 R13: ffff8801947b7ab0 R14: ffff8801ca2cc812 R15: ffff8801ca2ccc58 FS: 00007faf15285700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 00000001d6f28000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400