general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] CPU: 1 PID: 19697 Comm: syz-executor.0 Not tainted 5.10.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:reuseport_add_sock+0x15c/0x8d0 net/core/sock_reuseport.c:161 Code: e8 69 da 6e fa 66 41 83 fc 01 0f 85 6f 06 00 00 e8 29 e2 6e fa 4c 8d 65 12 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <0f> b6 14 02 4c 89 e0 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 18 RSP: 0018:ffffc9000aa57cb8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff888013a32200 RCX: ffffffff870125c7 RDX: 0000000000000002 RSI: ffffffff87012457 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000003 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000012 R13: ffff888013a37b98 R14: ffff888013a37700 R15: 0000000000000000 FS: 00007ff74b04b700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000119c020 CR3: 0000000014134000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __sctp_hash_endpoint net/sctp/input.c:750 [inline] sctp_hash_endpoint+0x4fe/0x5f0 net/sctp/input.c:778 sctp_listen_start net/sctp/socket.c:8390 [inline] sctp_inet_listen+0x71c/0x930 net/sctp/socket.c:8445 __sys_listen+0x17d/0x250 net/socket.c:1668 __do_sys_listen net/socket.c:1677 [inline] __se_sys_listen net/socket.c:1675 [inline] __x64_sys_listen+0x50/0x70 net/socket.c:1675 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e159 Code: 0d 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 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff74b04ac68 EFLAGS: 00000246 ORIG_RAX: 0000000000000032 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 000000000045e159 RDX: 0000000000000000 RSI: 0000000000000050 RDI: 0000000000000004 RBP: 000000000119bfb8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffd4848029f R14: 00007ff74b04b9c0 R15: 000000000119bf8c Modules linked in: ---[ end trace e96cf4dfcb336103 ]--- RIP: 0010:reuseport_add_sock+0x15c/0x8d0 net/core/sock_reuseport.c:161 Code: e8 69 da 6e fa 66 41 83 fc 01 0f 85 6f 06 00 00 e8 29 e2 6e fa 4c 8d 65 12 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <0f> b6 14 02 4c 89 e0 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 18 RSP: 0018:ffffc9000aa57cb8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff888013a32200 RCX: ffffffff870125c7 RDX: 0000000000000002 RSI: ffffffff87012457 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000003 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000012 R13: ffff888013a37b98 R14: ffff888013a37700 R15: 0000000000000000 FS: 00007ff74b04b700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000119c020 CR3: 0000000014134000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400