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BUG: KMSAN: uninit-value in post_read_mst_fixup+0x5ee/0xb80 fs/ntfs/mst.c:39
CPU: 1 PID: 12517 Comm: syz-executor.3 Not tainted 5.13.0-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:200
 post_read_mst_fixup+0x5ee/0xb80 fs/ntfs/mst.c:39
 ntfs_end_buffer_async_read+0xbef/0x14d0 fs/ntfs/aops.c:133
 end_bio_bh_io_sync+0x171/0x230 fs/buffer.c:3026
 bio_endio+0x8e2/0xa70 block/bio.c:1416
 submit_bio_checks+0x512/0x2380 block/blk-core.c:909
 submit_bio_noacct+0x60/0x20b0 block/blk-core.c:1032
 submit_bio+0x526/0xa90 block/blk-core.c:1118
 submit_bh_wbc+0xd2e/0xdd0 fs/buffer.c:3075
 submit_bh+0x97/0xc0 fs/buffer.c:3081
 ntfs_read_block fs/ntfs/aops.c:345 [inline]
 ntfs_readpage+0x3b3c/0x4530 fs/ntfs/aops.c:435
 do_read_cache_page+0x1821/0x1d00 mm/filemap.c:3348
 read_cache_page+0xf3/0x110 mm/filemap.c:3447
 read_mapping_page include/linux/pagemap.h:515 [inline]
 ntfs_map_page fs/ntfs/aops.h:75 [inline]
 check_mft_mirror+0x7cd/0x3110 fs/ntfs/super.c:1109
 load_system_files fs/ntfs/super.c:1772 [inline]
 ntfs_fill_super+0x44ff/0xacd0 fs/ntfs/super.c:2893
 mount_bdev+0x618/0x900 fs/super.c:1368
 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:1498
 do_new_mount fs/namespace.c:2905 [inline]
 path_mount+0x3d5d/0x5bb0 fs/namespace.c:3235
 do_mount fs/namespace.c:3248 [inline]
 __do_sys_mount fs/namespace.c:3456 [inline]
 __se_sys_mount+0x921/0xa10 fs/namespace.c:3433
 __ia32_sys_mount+0x157/0x1b0 fs/namespace.c:3433
 do_syscall_32_irqs_on arch/x86/entry/common.c:84 [inline]
 __do_fast_syscall_32+0x132/0x1b0 arch/x86/entry/common.c:149
 do_fast_syscall_32+0x77/0xd0 arch/x86/entry/common.c:179
 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:222
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7ffc549
Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f55f6440 EFLAGS: 00000296 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffda RBX: 00000000f55f64b0 RCX: 0000000020000100
RDX: 0000000020000000 RSI: 0000000000000000 RDI: 00000000f55f64f0
RBP: 00000000f55f64f0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000

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:274
 __alloc_pages+0xb14/0xf70 mm/page_alloc.c:5241
 alloc_pages+0x7b6/0xb60 mm/mempolicy.c:2272
 __page_cache_alloc mm/filemap.c:1005 [inline]
 do_read_cache_page+0x3e3/0x1d00 mm/filemap.c:3332
 read_cache_page+0xf3/0x110 mm/filemap.c:3447
 read_mapping_page include/linux/pagemap.h:515 [inline]
 ntfs_map_page fs/ntfs/aops.h:75 [inline]
 check_mft_mirror+0x7cd/0x3110 fs/ntfs/super.c:1109
 load_system_files fs/ntfs/super.c:1772 [inline]
 ntfs_fill_super+0x44ff/0xacd0 fs/ntfs/super.c:2893
 mount_bdev+0x618/0x900 fs/super.c:1368
 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:1498
 do_new_mount fs/namespace.c:2905 [inline]
 path_mount+0x3d5d/0x5bb0 fs/namespace.c:3235
 do_mount fs/namespace.c:3248 [inline]
 __do_sys_mount fs/namespace.c:3456 [inline]
 __se_sys_mount+0x921/0xa10 fs/namespace.c:3433
 __ia32_sys_mount+0x157/0x1b0 fs/namespace.c:3433
 do_syscall_32_irqs_on arch/x86/entry/common.c:84 [inline]
 __do_fast_syscall_32+0x132/0x1b0 arch/x86/entry/common.c:149
 do_fast_syscall_32+0x77/0xd0 arch/x86/entry/common.c:179
 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:222
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
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