Hello, syzbot found the following issue on: HEAD commit: 1c23f9e627a7 Linux 6.0-rc2 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=152b86a5080000 kernel config: https://syzkaller.appspot.com/x/.config?x=3045c937aad027f7 dashboard link: https://syzkaller.appspot.com/bug?extid=69d15cab6309bffae739 compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1621f485080000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=171012d3080000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+69d15cab6309bffae739@xxxxxxxxxxxxxxxxxxxxxxxxx loop0: detected capacity change from 0 to 75 ntfs3: loop0: RAW NTFS volume: Filesystem size 0.00 Gb > volume size 0.00 Gb. Mount in read-only Unable to handle kernel NULL pointer dereference at virtual address 0000000000000238 Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=0000000107c58000 [0000000000000238] pgd=0800000108ac7003, p4d=0800000108ac7003, pud=0800000109389003, pmd=0000000000000000 Internal error: Oops: 96000006 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 3028 Comm: syz-executor245 Not tainted 6.0.0-rc2-syzkaller-16440-g1c23f9e627a7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/20/2022 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ni_find_attr+0x54/0x43c fs/ntfs3/frecord.c:194 lr : ni_find_attr+0x54/0x43c fs/ntfs3/frecord.c:190 sp : ffff80001200b8f0 x29: ffff80001200b920 x28: 0000000000000000 x27: 00000000fffffffe x26: 0000000000000000 x25: 0000000000000000 x24: ffff80001200b984 x23: 0000000000000000 x22: 0000000000000080 x21: 0000000000000000 x20: 0000000000000000 x19: 0000000000000000 x18: 00000000000000c0 x17: ffff80000dd7a698 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 00000000fffffffe x12: ffff80000d5998c8 x11: ff80800008be8ec0 x10: 0000000000000000 x9 : ffff800008be8ec0 x8 : ffff0000c5569a80 x7 : 0000000000000000 x6 : ffff80001200b984 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000080 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: ni_find_attr+0x54/0x43c fs/ntfs3/frecord.c:190 attr_load_runs_vcn+0x6c/0x138 fs/ntfs3/attrib.c:1220 mi_read+0x178/0x274 fs/ntfs3/record.c:151 ntfs_read_mft fs/ntfs3/inode.c:69 [inline] ntfs_iget5+0x15c/0x138c fs/ntfs3/inode.c:501 ntfs_fill_super+0x950/0x14a4 fs/ntfs/super.c:2791 get_tree_bdev+0x1e8/0x2a0 fs/super.c:1323 ntfs_fs_get_tree+0x28/0x38 fs/ntfs3/super.c:1358 vfs_get_tree+0x40/0x140 fs/super.c:1530 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3040 path_mount+0x358/0x914 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __arm64_sys_mount+0x2f8/0x408 fs/namespace.c:3568 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x154 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:624 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:642 el0t_64_sync+0x18c/0x190 Code: aa0103fa aa0003f3 f81f83a8 97daea83 (f9411e7b) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: aa0103fa mov x26, x1 4: aa0003f3 mov x19, x0 8: f81f83a8 stur x8, [x29, #-8] c: 97daea83 bl 0xffffffffff6baa18 * 10: f9411e7b ldr x27, [x19, #568] <-- trapping instruction --- 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. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
