On Tue, 4 Oct 2022 at 11:53, syzbot <syzbot+c3616973d9db2b0cff65@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > > Hello, > > syzbot found the following issue on: > > HEAD commit: bbed346d5a96 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=120e011f080000 > kernel config: https://syzkaller.appspot.com/x/.config?x=aae2d21e7dd80684 > dashboard link: https://syzkaller.appspot.com/bug?extid=c3616973d9db2b0cff65 > 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 > > Unfortunately, I don't have any reproducer for this issue yet. > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/11078f50b80b/disk-bbed346d.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/398e5f1e6c84/vmlinux-bbed346d.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+c3616973d9db2b0cff65@xxxxxxxxxxxxxxxxxxxxxxxxx +ntfs maintainers > ntfs: volume version 3.1. > Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 > Mem abort info: > ESR = 0x0000000086000006 > EC = 0x21: IABT (current EL), IL = 32 bits > SET = 0, FnV = 0 > EA = 0, S1PTW = 0 > FSC = 0x06: level 2 translation fault > user pgtable: 4k pages, 48-bit VAs, pgdp=00000001515fb000 > [0000000000000000] pgd=080000015162c003, p4d=080000015162c003, pud=08000001511b5003, pmd=0000000000000000 > Internal error: Oops: 0000000086000006 [#1] PREEMPT SMP > Modules linked in: > CPU: 0 PID: 4711 Comm: syz-executor.1 Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 > pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) > pc : 0x0 > lr : filemap_read_folio+0x68/0x33c mm/filemap.c:2394 > sp : ffff800015e03940 > x29: ffff800015e03940 x28: 00000000ffffffff x27: 0000000000080001 > x26: 0000000000001000 x25: 0000000000000000 x24: 0000000000000000 > x23: fffffc00044d8580 x22: fffffc00044d8580 x21: 0000000000000000 > x20: 0000000000000000 x19: fffffc00044d8580 x18: fffffffffffffff5 > x17: ffff80000bffd6bc x16: 0000000000000068 x15: 000000000000000c > x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000004 > x11: ff808000083d0b00 x10: 0000000000000000 x9 : ffff8000083d0b00 > x8 : 0000000000000100 x7 : ffff80000818d174 x6 : ffff8000083ed3f0 > x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 > x2 : fffffc00044d8580 x1 : fffffc00044d8580 x0 : 0000000000000000 > Call trace: > 0x0 > do_read_cache_folio+0x1c8/0x588 mm/filemap.c:3519 > do_read_cache_page mm/filemap.c:3561 [inline] > read_cache_page+0x40/0x178 mm/filemap.c:3570 > read_mapping_page include/linux/pagemap.h:756 [inline] > ntfs_map_page fs/ntfs/aops.h:75 [inline] > ntfs_check_logfile+0x2a4/0x8cc fs/ntfs/logfile.c:532 > load_and_check_logfile+0x5c/0xcc fs/ntfs/super.c:1215 > load_system_files+0x7d0/0x1220 fs/ntfs/super.c:1941 > ntfs_fill_super+0xbac/0x1030 fs/ntfs/super.c:2891 > mount_bdev+0x1b8/0x210 fs/super.c:1400 > ntfs_mount+0x44/0x58 fs/ntfs/super.c:3048 > legacy_get_tree+0x30/0x74 fs/fs_context.c:610 > 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+0x2c4/0x3c4 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+0x48/0x164 arch/arm64/kernel/syscall.c:206 > el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:636 > el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654 > el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 > Code: bad PC value > ---[ end trace 0000000000000000 ]--- > > > --- > 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. > > -- > You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@xxxxxxxxxxxxxxxx. > To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/0000000000006b624d05ea326f79%40google.com.
