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: 17348 Comm: syz-executor.1 Not tainted 5.13.0-rc3-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:1424 [inline]
RIP: 0010:skb_has_frag_list include/linux/skbuff.h:3579 [inline]
RIP: 0010:kcm_sendmsg+0xdd7/0x2240 net/kcm/kcmsock.c:1069
Code: fb 05 0f 84 4b 0b 00 00 e8 36 84 47 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 5b 11 00 00 48 8b 44 24 18 48 8d a8 c4 00 00 00
RSP: 0018:ffffc900049d79b8 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000c03d000
RDX: 0000000000000019 RSI: ffffffff882d585a RDI: 0000000000000003
RBP: ffff8880309005aa R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff882d5bbb R11: 0000000000000000 R12: 00000000fffffe00
R13: 00000000000000c8 R14: ffffed1006120072 R15: ffff888030900000
FS:  00007f19c3159700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000568000 CR3: 0000000021a89000 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_64+0x3a/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665d9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f19c3159188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9
RDX: 0000000000000000 RSI: 0000000020001900 RDI: 0000000000000003
RBP: 00007f19c31591d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffc264f5d3f R14: 00007f19c3159300 R15: 0000000000022000
Modules linked in:
---[ end trace a0baaf67e2b79212 ]---
RIP: 0010:skb_end_pointer include/linux/skbuff.h:1424 [inline]
RIP: 0010:skb_has_frag_list include/linux/skbuff.h:3579 [inline]
RIP: 0010:kcm_sendmsg+0xdd7/0x2240 net/kcm/kcmsock.c:1069
Code: fb 05 0f 84 4b 0b 00 00 e8 36 84 47 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 5b 11 00 00 48 8b 44 24 18 48 8d a8 c4 00 00 00
RSP: 0018:ffffc900049d79b8 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000c03d000
RDX: 0000000000000019 RSI: ffffffff882d585a RDI: 0000000000000003
RBP: ffff8880309005aa R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff882d5bbb R11: 0000000000000000 R12: 00000000fffffe00
R13: 00000000000000c8 R14: ffffed1006120072 R15: ffff888030900000
FS:  00007f19c3159700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000544038 CR3: 0000000021a89000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400