general protection fault, probably for non-canonical address 0xdffffc0000000017: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000000b8-0x00000000000000bf] CPU: 1 PID: 30923 Comm: syz-executor564 Not tainted 5.7.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:sctp_ulpevent_nofity_peer_addr_change+0xed/0xa30 net/sctp/ulpevent.c:347 Code: 80 3c 02 00 0f 85 f9 07 00 00 49 8b ac 24 a8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bd bc 00 00 00 48 89 f9 48 c1 e9 03 <0f> b6 0c 01 48 89 f8 83 e0 07 83 c0 03 38 c8 7c 08 84 c9 0f 85 47 RSP: 0018:ffffc900037472b8 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000017 RDX: 1ffff1100887d040 RSI: 0000000000000000 RDI: 00000000000000bc RBP: 0000000000000000 R08: fffff520006e8e70 R09: ffffc90003747300 R10: ffffc9000374737f R11: fffff520006e8e6f R12: ffff8880443e8158 R13: ffff8880443e81a0 R14: 0000000000000000 R15: 0000000000000004 FS: 0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:00000000096ff840 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000020000180 CR3: 000000003d98e000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sctp_assoc_set_primary+0x59/0x280 net/sctp/associola.c:435 sctp_assoc_rm_peer+0x75a/0x980 net/sctp/associola.c:508 sctp_assoc_update+0x4ae/0xd30 net/sctp/associola.c:1116 sctp_cmd_assoc_update net/sctp/sm_sideeffect.c:836 [inline] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1305 [inline] sctp_side_effects net/sctp/sm_sideeffect.c:1185 [inline] sctp_do_sm+0x1edc/0x49a0 net/sctp/sm_sideeffect.c:1156 sctp_assoc_bh_rcv+0x281/0x5d0 net/sctp/associola.c:1044 sctp_backlog_rcv+0x1b7/0xfa0 net/sctp/input.c:344 sk_backlog_rcv include/net/sock.h:996 [inline] __release_sock+0x116/0x350 net/core/sock.c:2459 release_sock+0x4a/0x170 net/core/sock.c:2975 sctp_wait_for_connect+0x241/0x450 net/sctp/socket.c:9295 __sctp_connect+0x7df/0xa60 net/sctp/socket.c:1240 __sctp_setsockopt_connectx+0xec/0x140 net/sctp/socket.c:1336 sctp_setsockopt_connectx net/sctp/socket.c:1368 [inline] sctp_setsockopt+0x93d/0x58e0 net/sctp/socket.c:4713 __compat_sys_setsockopt+0x10d/0x260 net/compat.c:400 __do_compat_sys_setsockopt net/compat.c:413 [inline] __se_compat_sys_setsockopt net/compat.c:410 [inline] __ia32_compat_sys_setsockopt+0xb4/0x150 net/compat.c:410 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline] do_fast_syscall_32+0x231/0xba0 arch/x86/entry/common.c:396 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 Modules linked in: ---[ end trace 5af95df32d510262 ]--- RIP: 0010:sctp_ulpevent_nofity_peer_addr_change+0xed/0xa30 net/sctp/ulpevent.c:347 Code: 80 3c 02 00 0f 85 f9 07 00 00 49 8b ac 24 a8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bd bc 00 00 00 48 89 f9 48 c1 e9 03 <0f> b6 0c 01 48 89 f8 83 e0 07 83 c0 03 38 c8 7c 08 84 c9 0f 85 47 RSP: 0018:ffffc900037472b8 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000017 RDX: 1ffff1100887d040 RSI: 0000000000000000 RDI: 00000000000000bc RBP: 0000000000000000 R08: fffff520006e8e70 R09: ffffc90003747300 R10: ffffc9000374737f R11: fffff520006e8e6f R12: ffff8880443e8158 R13: ffff8880443e81a0 R14: 0000000000000000 R15: 0000000000000004 FS: 0000000000000000(0000) GS:ffff8880ae800000(0063) knlGS:00000000096ff840 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000ffce7f0c CR3: 000000003d98e000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400