netlink: 8 bytes leftover after parsing attributes in process `syz-executor6'.
Not allocated shadow for addr ffff88018c1a8000 (page ffffea0009489f00)
Attempted to access 0 bytes
------------[ cut here ]------------
kernel BUG at mm/kmsan/kmsan.c:1114!
invalid opcode: 0000 [#1] SMP PTI
CPU: 1 PID: 23608 Comm: syz-executor2 Not tainted 4.19.0-rc1+ #36
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kmsan_get_shadow_address+0x2d6/0x3d0 mm/kmsan/kmsan.c:1112
Code: e9 89 00 00 00 c7 04 25 60 d5 0c 8a 01 00 00 00 65 48 8b 04 25 80 fc 02 00 c6 80 f3 08 00 00 01 80 3c 25 78 d5 0c 8a 00 74 0c <0f> 0b 0f 1f 84 00 00 00 00 00 eb fe 48 c7 c7 01 58 49 89 31 c0 4c
RSP: 0018:ffff8800189df430 EFLAGS: 00010086
RAX: 000000000000001b RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000002534 RDI: 0000000000002535
RBP: ffff8800189df460 R08: 0000000000000000 R09: ffff88021fd39250
R10: 0000000000000000 R11: ffffffff850cfb00 R12: 0000000000000001
R13: ffff88018c1a8000 R14: 0000000000000001 R15: ffff88018c1a7ffc
FS:  00007f4f3e6f9700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000a3fdc8 CR3: 00000001d5bbe000 CR4: 00000000001406e0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 kmsan_memmove_shadow+0x87/0xe0 mm/kmsan/kmsan.c:332
 __msan_memmove+0xaa/0x130 mm/kmsan/kmsan_instr.c:376
 ext4_xattr_set_entry+0x32f9/0x6360 fs/ext4/xattr.c:1705
 ext4_xattr_ibody_set fs/ext4/xattr.c:2240 [inline]
 ext4_xattr_set_handle+0x192d/0x2b40 fs/ext4/xattr.c:2407
 ext4_xattr_set+0x3d7/0x560 fs/ext4/xattr.c:2504
 ext4_xattr_user_set+0x19e/0x1d0 fs/ext4/xattr_user.c:40
 __vfs_setxattr+0x7fa/0x850 fs/xattr.c:149
 __vfs_setxattr_noperm+0x2fc/0x980 fs/xattr.c:180
 vfs_setxattr fs/xattr.c:223 [inline]
 setxattr+0x823/0x9b0 fs/xattr.c:450
 __do_sys_fsetxattr fs/xattr.c:505 [inline]
 __se_sys_fsetxattr+0x2b0/0x3a0 fs/xattr.c:494
 __x64_sys_fsetxattr+0x15d/0x1b0 fs/xattr.c:494
 do_syscall_64+0x15b/0x220 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x457089
Code: fd 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 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f4f3e6f8c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000be
RAX: ffffffffffffffda RBX: 00007f4f3e6f96d4 RCX: 0000000000457089
RDX: 00000000200002c0 RSI: 0000000020000280 RDI: 0000000000000003
RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000398 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004cbc08 R14: 00000000004c34a2 R15: 0000000000000000
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
---[ end trace 00d59587b628e7b7 ]---
RIP: 0010:kmsan_get_shadow_address+0x2d6/0x3d0 mm/kmsan/kmsan.c:1112
Code: e9 89 00 00 00 c7 04 25 60 d5 0c 8a 01 00 00 00 65 48 8b 04 25 80 fc 02 00 c6 80 f3 08 00 00 01 80 3c 25 78 d5 0c 8a 00 74 0c <0f> 0b 0f 1f 84 00 00 00 00 00 eb fe 48 c7 c7 01 58 49 89 31 c0 4c
RSP: 0018:ffff8800189df430 EFLAGS: 00010086
RAX: 000000000000001b RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000002534 RDI: 0000000000002535
RBP: ffff8800189df460 R08: 0000000000000000 R09: ffff88021fd39250
R10: 0000000000000000 R11: ffffffff850cfb00 R12: 0000000000000001
R13: ffff88018c1a8000 R14: 0000000000000001 R15: ffff88018c1a7ffc
FS:  00007f4f3e6f9700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000a3fdc8 CR3: 00000001d5bbe000 CR4: 00000000001406e0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600