general protection fault, probably for non-canonical address 0xdffffc0000000019: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000000c8-0x00000000000000cf]
CPU: 0 PID: 11632 Comm: syz-executor.3 Not tainted 5.13.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:skb_end_pointer include/linux/skbuff.h:1419 [inline]
RIP: 0010:skb_has_frag_list include/linux/skbuff.h:3566 [inline]
RIP: 0010:kcm_sendmsg+0xdd7/0x2240 net/kcm/kcmsock.c:1069
Code: fb 05 0f 84 25 0b 00 00 e8 96 f2 48 f9 48 8b 44 24 18 4c 8d a8 c8 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 5d 11 00 00 48 8b 44 24 18 48 8d a8 c4 00 00 00
RSP: 0018:ffffc9000191f998 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9001037f000
RDX: 0000000000000019 RSI: ffffffff882be95a RDI: 0000000000000003
RBP: ffff88806a1692aa R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff882becbb R11: 0000000000000000 R12: 00000000fffffff5
R13: 00000000000000c8 R14: ffff888038ac7480 R15: ffff88806a168d00
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0063) knlGS:00000000f55a7b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000008159944 CR3: 000000002c178000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:674
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433
 do_syscall_32_irqs_on arch/x86/entry/common.c:78 [inline]
 __do_fast_syscall_32+0x67/0xe0 arch/x86/entry/common.c:143
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:168
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7fad549
Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f55a75fc EFLAGS: 00000296 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000200004c0
RDX: 0000000000048850 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace aafcc537fa50a75d ]---
RIP: 0010:skb_end_pointer include/linux/skbuff.h:1419 [inline]
RIP: 0010:skb_has_frag_list include/linux/skbuff.h:3566 [inline]
RIP: 0010:kcm_sendmsg+0xdd7/0x2240 net/kcm/kcmsock.c:1069
Code: fb 05 0f 84 25 0b 00 00 e8 96 f2 48 f9 48 8b 44 24 18 4c 8d a8 c8 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 5d 11 00 00 48 8b 44 24 18 48 8d a8 c4 00 00 00
RSP: 0018:ffffc9000191f998 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9001037f000
RDX: 0000000000000019 RSI: ffffffff882be95a RDI: 0000000000000003
RBP: ffff88806a1692aa R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff882becbb R11: 0000000000000000 R12: 00000000fffffff5
R13: 00000000000000c8 R14: ffff888038ac7480 R15: ffff88806a168d00
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0063) knlGS:00000000f55a7b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000000816f59c CR3: 000000002c178000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400