================================================================== 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+0x4110/0x66b8 fs/ntfs/file.c:1864 Write of size 1 at addr ffff0000e3b07170 by task syz-executor.3/16905 CPU: 1 PID: 16905 Comm: syz-executor.3 Not tainted 5.15.146-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description+0x7c/0x3f0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x174/0x1e4 mm/kasan/report.c:451 kasan_check_range+0x274/0x2b4 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+0x4110/0x66b8 fs/ntfs/file.c:1864 ntfs_file_write_iter+0xfa4/0x170c fs/ntfs/file.c:1921 call_write_iter include/linux/fs.h:2146 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x87c/0xb3c fs/read_write.c:594 ksys_write+0x15c/0x26c 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+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 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:00000000695edae1 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x123b07 flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000000000 fffffc00038e3088 fffffc00038acfc8 0000000000000000 raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000e3b07000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff0000e3b07080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff0000e3b07100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff0000e3b07180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff0000e3b07200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================