ntfs: (device loop0): parse_options(): Option utf8 is no longer supported, using option nls=utf8. Please use option nls=utf8 in the future and make sure utf8 is compiled either as a module or into the kernel.
ntfs: volume version 3.1.
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BUG: KASAN: use-after-free in ntfs_commit_pages_after_write fs/ntfs/file.c:1608 [inline]
BUG: KASAN: use-after-free in ntfs_perform_write+0x3df0/0x61a8 fs/ntfs/file.c:1864
Write of size 1 at addr ffff0000e26f1170 by task syz-executor.0/4494

CPU: 1 PID: 4494 Comm: syz-executor.0 Not tainted 5.15.182-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Call trace:
 dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 print_address_description+0x78/0x30c mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0xec/0x15c mm/kasan/report.c:451
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x270/0x2b0 mm/kasan/generic.c:189
 memcpy+0xb4/0xe8 mm/kasan/shadow.c:66
 ntfs_commit_pages_after_write fs/ntfs/file.c:1608 [inline]
 ntfs_perform_write+0x3df0/0x61a8 fs/ntfs/file.c:1864
 ntfs_file_write_iter+0xfa4/0x1738 fs/ntfs/file.c:1921
 call_write_iter include/linux/fs.h:2172 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x7c8/0xa2c fs/read_write.c:594
 ksys_write+0x120/0x210 fs/read_write.c:647
 __do_sys_write fs/read_write.c:659 [inline]
 __se_sys_write fs/read_write.c:656 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:656
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

The buggy address belongs to the page:
page:00000000692eb5d6 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x1226f1
flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000000000 fffffc000389f648 fffffc000389f188 0000000000000000
raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000e26f1000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff0000e26f1080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff0000e26f1100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                                             ^
 ffff0000e26f1180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff0000e26f1200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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