syzbot

ntfs: (device loop0): load_system_files(): Failed to determine if Windows is hibernated.  Will not be able to remount read-write.  Run chkdsk.
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BUG: KASAN: slab-out-of-bounds in ntfs_filldir fs/ntfs/dir.c:1021 [inline]
BUG: KASAN: slab-out-of-bounds in ntfs_readdir+0xb00/0x2bf0 fs/ntfs/dir.c:1200
Read of size 1 at addr ffff0000d03719f1 by task syz-executor906/6162

CPU: 0 PID: 6162 Comm: syz-executor906 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x178/0x518 mm/kasan/report.c:488
 kasan_report+0xd8/0x138 mm/kasan/report.c:601
 __asan_report_load1_noabort+0x20/0x2c mm/kasan/report_generic.c:378
 ntfs_filldir fs/ntfs/dir.c:1021 [inline]
 ntfs_readdir+0xb00/0x2bf0 fs/ntfs/dir.c:1200
 wrap_directory_iterator+0xa8/0xf4 fs/readdir.c:67
 shared_ntfs_readdir+0x30/0x40 fs/ntfs/dir.c:1529
 iterate_dir+0x3f8/0x580 fs/readdir.c:110
 __do_sys_getdents64 fs/readdir.c:409 [inline]
 __se_sys_getdents64 fs/readdir.c:394 [inline]
 __arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:394
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598

Allocated by task 6162:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:68
 kasan_save_alloc_info+0x40/0x50 mm/kasan/generic.c:575
 poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
 __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:387
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slub.c:3981 [inline]
 __kmalloc+0x2bc/0x5d4 mm/slub.c:3994
 kmalloc include/linux/slab.h:594 [inline]
 ntfs_readdir+0x65c/0x2bf0 fs/ntfs/dir.c:1162
 wrap_directory_iterator+0xa8/0xf4 fs/readdir.c:67
 shared_ntfs_readdir+0x30/0x40 fs/ntfs/dir.c:1529
 iterate_dir+0x3f8/0x580 fs/readdir.c:110
 __do_sys_getdents64 fs/readdir.c:409 [inline]
 __se_sys_getdents64 fs/readdir.c:394 [inline]
 __arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:394
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598

The buggy address belongs to the object at ffff0000d0371980
 which belongs to the cache kmalloc-64 of size 64
The buggy address is located 57 bytes to the right of
 allocated 56-byte region [ffff0000d0371980, ffff0000d03719b8)

The buggy address belongs to the physical page:
page:0000000083407c63 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0000d0371780 pfn:0x110371
flags: 0x5ffc00000000800(slab|node=0|zone=2|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 05ffc00000000800 ffff0000c0001640 fffffdffc33d9380 dead000000000006
raw: ffff0000d0371780 0000000080200017 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000d0371880: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff0000d0371900: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff0000d0371980: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc
                                                             ^
 ffff0000d0371a00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff0000d0371a80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
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