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. ================================================================== BUG: KASAN: use-after-free in ntfs_commit_pages_after_write fs/ntfs/file.c:1604 [inline] BUG: KASAN: use-after-free in ntfs_perform_write+0x4288/0x6ef4 fs/ntfs/file.c:1860 Write of size 1 at addr ffff0000e71ae170 by task syz-executor.0/4675 CPU: 0 PID: 4675 Comm: syz-executor.0 Not tainted 6.1.83-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x174/0x4c0 mm/kasan/report.c:395 kasan_report+0xd4/0x130 mm/kasan/report.c:495 kasan_check_range+0x264/0x2a4 mm/kasan/generic.c:189 memcpy+0x60/0x90 mm/kasan/shadow.c:66 ntfs_commit_pages_after_write fs/ntfs/file.c:1604 [inline] ntfs_perform_write+0x4288/0x6ef4 fs/ntfs/file.c:1860 ntfs_file_write_iter+0xf78/0x17b0 fs/ntfs/file.c:1917 call_write_iter include/linux/fs.h:2265 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x610/0x914 fs/read_write.c:584 ksys_write+0x15c/0x26c fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:646 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 The buggy address belongs to the physical page: page:00000000674eab1c refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x1271ae flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000000000 fffffc00039c6c08 fffffc00039ca088 0000000000000000 raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000e71ae000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff0000e71ae080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff0000e71ae100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff0000e71ae180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff0000e71ae200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================