------------[ cut here ]------------
WARNING: CPU: 0 PID: 9834 at net/kcm/kcmsock.c:630 kcm_write_msgs+0x13b0/0x1530 net/kcm/kcmsock.c:630
Modules linked in:
CPU: 0 PID: 9834 Comm: syz-executor.5 Not tainted 6.7.0-rc6-syzkaller-00010-g2cf4f94d8e86 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:kcm_write_msgs+0x13b0/0x1530 net/kcm/kcmsock.c:630
Code: f7 48 8b 5c 24 28 48 89 df e8 5c a0 ff ff eb 48 e8 b5 02 48 f7 45 31 f6 45 31 ed eb b9 e8 a8 02 48 f7 eb 2f e8 a1 02 48 f7 90 <0f> 0b 90 eb 09 e8 96 02 48 f7 90 0f 0b 90 41 bd ea ff ff ff eb 13
RSP: 0018:ffffc90016ce7740 EFLAGS: 00010293
RAX: ffffffff8a4664bf RBX: 0000000000000000 RCX: ffff888085719dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90016ce7930 R08: ffffffff8a46592b R09: 0000000000000000
R10: ffffc90016ce7840 R11: fffff52002d9cf15 R12: dffffc0000000000
R13: ffff888018711d50 R14: ffff888018711c80 R15: ffff888018711d4c
FS:  00007f22bdbde6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200004cc CR3: 0000000032eef000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kcm_sendmsg+0x218c/0x2780 net/kcm/kcmsock.c:905
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg net/socket.c:745 [inline]
 sock_write_iter+0x39a/0x520 net/socket.c:1158
 call_write_iter include/linux/fs.h:2020 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x792/0xb20 fs/read_write.c:584
 ksys_write+0x1a0/0x2c0 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f22bce7cbe9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f22bdbde0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f22bcf9bf80 RCX: 00007f22bce7cbe9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007f22bcec847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f22bcf9bf80 R15: 00007ffee0874f78
 </TASK>