Hello, syzbot found the following issue on: HEAD commit: aafe7ad77b91 Merge branch 'for-next/core' into for-kernelci git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=154cf661e80000 kernel config: https://syzkaller.appspot.com/x/.config?x=23ce86eb3d78ef4d dashboard link: https://syzkaller.appspot.com/bug?extid=f583da5774d7dd400312 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=149ca405e80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12172d89e80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/23845238c49b/disk-aafe7ad7.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/1144b0f74104/vmlinux-aafe7ad7.xz kernel image: https://storage.googleapis.com/syzbot-assets/6db20df213a2/Image-aafe7ad7.gz.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/475f587fffbd/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+f583da5774d7dd400312@xxxxxxxxxxxxxxxxxxxxxxxxx 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:1597 [inline] BUG: KASAN: use-after-free in ntfs_perform_write+0x5354/0x82c8 fs/ntfs/file.c:1853 Write of size 1 at addr ffff0000de9b6170 by task syz-executor306/6098 CPU: 0 PID: 6098 Comm: syz-executor306 Not tainted 6.7.0-rc6-syzkaller-gaafe7ad77b91 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 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:364 [inline] print_report+0x174/0x514 mm/kasan/report.c:475 kasan_report+0xd8/0x138 mm/kasan/report.c:588 kasan_check_range+0x254/0x294 mm/kasan/generic.c:187 __asan_memcpy+0x54/0x84 mm/kasan/shadow.c:106 ntfs_commit_pages_after_write fs/ntfs/file.c:1597 [inline] ntfs_perform_write+0x5354/0x82c8 fs/ntfs/file.c:1853 ntfs_file_write_iter+0xf3c/0x1738 fs/ntfs/file.c:1909 call_write_iter include/linux/fs.h:2020 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x610/0x910 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:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 The buggy address belongs to the physical page: page:000000003d2e8ed5 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x11e9b6 flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 05ffc00000000000 fffffc00037a6dc8 fffffc00037a6d48 0000000000000000 raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000de9b6000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff0000de9b6080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff0000de9b6100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff0000de9b6180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff0000de9b6200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ================================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
