Hello,
syzbot found the following issue on:
HEAD commit: 3f8a27f9e27b Linux 4.19.211
git tree: linux-4.19.y
console output:
https://syzkaller.appspot.com/x/log.txt?x=14f75093f00000
kernel config:
https://syzkaller.appspot.com/x/.config?x=9b9277b418617afe
dashboard link:
https://syzkaller.appspot.com/bug?extid=30b7f850c6d98ea461d2
compiler: gcc version 10.2.1 20210110 (Debian 10.2.1-6)
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by:
syzbot+30b7f8...@syzkaller.appspotmail.com
------------[ cut here ]------------
kernel BUG at fs/ntfs/dir.c:99!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 13110 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:ntfs_lookup_inode_by_name+0xd50/0x3bd0 fs/ntfs/dir.c:99
Code: ff df 48 c1 ea 03 80 3c 02 00 0f 85 29 29 00 00 48 8b 44 24 50 49 8d 5d 07 48 c7 00 00 00 00 00 e9 d8 fa ff ff e8 00 dd 1b ff <0f> 0b e8 f9 dc 1b ff 0f 0b e8 f2 dc 1b ff 48 8b 74 24 70 4c 89 e1
RSP: 0018:ffff888049c57938 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000008000 RCX: ffffc9000a253000
RDX: 0000000000040000 RSI: ffffffff8246a870 RDI: 0000000000000003
RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000004000
R10: 0000000000000003 R11: 0000000000000001 R12: ffff8880979bd450
R13: 1ffff1100938af4b R14: ffff8880528e0700 R15: ffff888054007180
FS: 00007efdbd305700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555c10708 CR3: 0000000097380000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
load_and_init_quota+0xd7/0x3d0 fs/ntfs/super.c:1381
load_system_files fs/ntfs/super.c:2117 [inline]
ntfs_fill_super+0x6815/0x7e10 fs/ntfs/super.c:2908
mount_bdev+0x2fc/0x3b0 fs/super.c:1158
mount_fs+0xa3/0x310 fs/super.c:1261
vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
vfs_kern_mount fs/namespace.c:951 [inline]
do_new_mount fs/namespace.c:2492 [inline]
do_mount+0x115c/0x2f50 fs/namespace.c:2822
ksys_mount+0xcf/0x130 fs/namespace.c:3038
__do_sys_mount fs/namespace.c:3052 [inline]
__se_sys_mount fs/namespace.c:3049 [inline]
__x64_sys_mount+0xba/0x150 fs/namespace.c:3049
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7efdbe99163a
Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007efdbd304f88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007efdbe99163a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007efdbd304fe0
RBP: 00007efdbd305020 R08: 00007efdbd305020 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000
R13: 0000000020000100 R14: 00007efdbd304fe0 R15: 000000002007dc00
Modules linked in:
---[ end trace d2b595be1980ea9e ]---
IPVS: ftp: loaded support on port[0] = 21
RIP: 0010:ntfs_lookup_inode_by_name+0xd50/0x3bd0 fs/ntfs/dir.c:99
Code: ff df 48 c1 ea 03 80 3c 02 00 0f 85 29 29 00 00 48 8b 44 24 50 49 8d 5d 07 48 c7 00 00 00 00 00 e9 d8 fa ff ff e8 00 dd 1b ff <0f> 0b e8 f9 dc 1b ff 0f 0b e8 f2 dc 1b ff 48 8b 74 24 70 4c 89 e1
RSP: 0018:ffff888049c57938 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000008000 RCX: ffffc9000a253000
RDX: 0000000000040000 RSI: ffffffff8246a870 RDI: 0000000000000003
RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000004000
R10: 0000000000000003 R11: 0000000000000001 R12: ffff8880979bd450
R13: 1ffff1100938af4b R14: ffff8880528e0700 R15: ffff888054007180
FS: 00007efdbd305700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
BFS-fs: bfs_fill_super(): No BFS filesystem on loop4 (magic=00000000)
audit: type=1800 audit(1654512640.864:90): pid=13207 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="bus" dev="sda1" ino=14094 res=0
CR2: 00007ffcaa3d3f80 CR3: 0000000097380000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
---
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