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BUG: KMSAN: uninit-value in post_read_mst_fixup+0x5ee/0xb80 fs/ntfs/mst.c:39
CPU: 0 PID: 11 Comm: ksoftirqd/0 Not tainted 5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x24c/0x2e0 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:121
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 post_read_mst_fixup+0x5ee/0xb80 fs/ntfs/mst.c:39
 ntfs_end_buffer_async_read+0xbff/0x14e0 fs/ntfs/aops.c:133
 end_bio_bh_io_sync+0x171/0x230 fs/buffer.c:3006
 bio_endio+0x8e2/0xa70 block/bio.c:1453
 req_bio_endio block/blk-core.c:265 [inline]
 blk_update_request+0xf2e/0x2690 block/blk-core.c:1456
 blk_mq_end_request+0x9e/0x120 block/blk-mq.c:564
 lo_complete_rq+0x2fc/0x550 drivers/block/loop.c:497
 blk_complete_reqs block/blk-mq.c:576 [inline]
 blk_done_softirq+0x130/0x1d0 block/blk-mq.c:581
 __do_softirq+0x1b9/0x715 kernel/softirq.c:345
 run_ksoftirqd+0x20/0x40 kernel/softirq.c:652
 smpboot_thread_fn+0x5f5/0xa90 kernel/smpboot.c:165
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Uninit was created at:
 kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:120
 kmsan_alloc_page+0xd0/0x1e0 mm/kmsan/kmsan_shadow.c:273
 __alloc_pages_nodemask+0x827/0xf90 mm/page_alloc.c:5044
 alloc_pages_current+0x7b6/0xb60 mm/mempolicy.c:2277
 alloc_pages include/linux/gfp.h:561 [inline]
 __page_cache_alloc mm/filemap.c:978 [inline]
 do_read_cache_page+0x3e3/0x1d00 mm/filemap.c:3247
 read_cache_page+0xf3/0x110 mm/filemap.c:3362
 read_mapping_page include/linux/pagemap.h:500 [inline]
 ntfs_map_page fs/ntfs/aops.h:75 [inline]
 map_mft_record_page+0x2a2/0x1090 fs/ntfs/mft.c:73
 map_mft_record+0x91/0x270 fs/ntfs/mft.c:156
 ntfs_read_locked_inode+0x47f/0x7930 fs/ntfs/inode.c:550
 ntfs_iget+0x207/0x2f0 fs/ntfs/inode.c:177
 load_and_init_upcase+0x87/0x1920 fs/ntfs/super.c:1655
 load_system_files fs/ntfs/super.c:1810 [inline]
 ntfs_fill_super+0x4bb8/0xacd0 fs/ntfs/super.c:2893
 mount_bdev+0x618/0x900 fs/super.c:1367
 ntfs_mount+0xc9/0xe0 fs/ntfs/super.c:3050
 legacy_get_tree+0x163/0x2e0 fs/fs_context.c:592
 vfs_get_tree+0xd8/0x5e0 fs/super.c:1497
 do_new_mount fs/namespace.c:2903 [inline]
 path_mount+0x3d64/0x5c20 fs/namespace.c:3233
 do_mount fs/namespace.c:3246 [inline]
 __do_sys_mount fs/namespace.c:3454 [inline]
 __se_sys_mount+0x921/0xa10 fs/namespace.c:3431
 __ia32_sys_mount+0x62/0x80 fs/namespace.c:3431
 do_syscall_32_irqs_on arch/x86/entry/common.c:79 [inline]
 __do_fast_syscall_32+0x127/0x180 arch/x86/entry/common.c:142
 do_fast_syscall_32+0x77/0xd0 arch/x86/entry/common.c:168
 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:211
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
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