netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'.
syz-executor7 uses obsolete (PF_INET,SOCK_PACKET)
Not allocated shadow for addr ffff88000b4f0000 (page ffffea000043da00)
Attempted to access 4096 bytes
------------[ cut here ]------------
kernel BUG at mm/kmsan/kmsan.c:1382!
invalid opcode: 0000 [#1] SMP PTI
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'.
CPU: 0 PID: 11303 Comm: syz-executor5 Not tainted 4.17.0+ #7
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kmsan_get_shadow_address+0x1ce/0x1f0 mm/kmsan/kmsan.c:1381
RSP: 0018:ffff880104f7f358 EFLAGS: 00010082
ieee80211 phy5: Selected rate control algorithm 'minstrel_ht'
RAX: 000000000000001e RBX: 0000000000000020 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 00000000000012be RDI: 00000000000012bf
RBP: ffff880104f7f370 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff86575810 R12: ffff88000b4f0000
R13: 000000000000c000 R14: 0000000000000001 R15: 0000000000001000
FS:  00007fdd536ac700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4ceda35db8 CR3: 000000010d562000 CR4: 00000000001406f0
DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 kmsan_internal_memset_shadow mm/kmsan/kmsan.c:172 [inline]
 kmsan_internal_unpoison_shadow+0x5c/0xe0 mm/kmsan/kmsan.c:209
 kmsan_unpoison_shadow+0x66/0xb0 mm/kmsan/kmsan.c:223
 get_user_pages_fast+0x493/0x770 mm/gup.c:1831
 iov_iter_get_pages+0x465/0x1810 lib/iov_iter.c:1074
 dio_refill_pages fs/direct-io.c:170 [inline]
 dio_get_page fs/direct-io.c:214 [inline]
 do_direct_IO fs/direct-io.c:980 [inline]
 do_blockdev_direct_IO fs/direct-io.c:1331 [inline]
 __blockdev_direct_IO+0x1a5f/0x65e0 fs/direct-io.c:1417
 ext4_direct_IO_read fs/ext4/inode.c:3833 [inline]
 ext4_direct_IO+0xed1/0x2850 fs/ext4/inode.c:3865
 generic_file_read_iter+0x3c6d/0x44d0 mm/filemap.c:2341
 ext4_file_read_iter+0x30f/0x520 include/linux/fs.h:728
 call_read_iter include/linux/fs.h:1778 [inline]
 new_sync_read fs/read_write.c:406 [inline]
 __vfs_read+0x775/0x9d0 fs/read_write.c:418
 vfs_read+0x36c/0x6b0 fs/read_write.c:452
 ksys_pread64 fs/read_write.c:626 [inline]
 __do_sys_pread64 fs/read_write.c:636 [inline]
 __se_sys_pread64 fs/read_write.c:633 [inline]
 __x64_sys_pread64+0x2f2/0x390 fs/read_write.c:633
 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x455b29
RSP: 002b:00007fdd536abc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000011
RAX: ffffffffffffffda RBX: 00007fdd536ac6d4 RCX: 0000000000455b29
RDX: 00000000ffffff4b RSI: 0000000020003c00 RDI: 0000000000000017
RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004c0687 R14: 00000000004cfc28 R15: 0000000000000001
Code: 75 29 48 c7 c7 9d 38 97 8a 31 c0 e8 fd 4c 80 ff 80 3c 25 f8 93 53 8b 00 75 11 48 c7 c7 cd 38 97 8a 31 c0 4c 89 fe e8 e2 4c 80 ff <0f> 0b eb fe 48 3d ff ff ff 1f 0f 87 a2 fe ff ff 48 8b 1c 25 10 
RIP: kmsan_get_shadow_address+0x1ce/0x1f0 mm/kmsan/kmsan.c:1381 RSP: ffff880104f7f358
---[ end trace 1759c00991b39932 ]---