syzbot


kernel BUG in ntfs_read_inode_mount

Status: upstream: reported C repro on 2022/09/19 21:45
Subsystems: ntfs
[Documentation on labels]
Reported-by: syzbot+dc4c8bac1ce6f4fc3cbc@syzkaller.appspotmail.com
First crash: 617d, last: 457d
Fix bisection: failed (error log, bisect log)
  
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG in ntfs_read_inode_mount fs 1 864d 863d 22/26 fixed on 2023/02/24 13:50

Sample crash report:
ntfs: (device loop0): is_boot_sector_ntfs(): Invalid end of sector marker.
------------[ cut here ]------------
kernel BUG at fs/ntfs/malloc.h:45!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8113 Comm: syz-executor422 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
RIP: 0010:__ntfs_malloc fs/ntfs/malloc.h:45 [inline]
RIP: 0010:ntfs_malloc_nofs fs/ntfs/malloc.h:66 [inline]
RIP: 0010:ntfs_read_inode_mount+0x1bc3/0x22b0 fs/ntfs/inode.c:1909
Code: ba 63 01 00 00 00 00 00 80 48 23 15 f7 54 de 08 48 89 ef be 42 00 60 00 e8 7a 87 48 ff 48 89 c5 e9 d9 f4 ff ff e8 cd fd 19 ff <0f> 0b e8 c6 fd 19 ff e8 c1 fd 19 ff 48 c7 c2 80 6c 94 88 4c 89 fe
RSP: 0018:ffff8880a8847a40 EFLAGS: 00010293
RAX: ffff8880956b4380 RBX: 0000000000000000 RCX: ffffffff82487c31
RDX: 0000000000000000 RSI: ffffffff824887a3 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000001 R12: ffff8880b2d92678
R13: ffff8880b2d92680 R14: ffff88808dbeea08 R15: ffff88809505e500
FS:  0000555555c66300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe8bd7e000 CR3: 00000000b4081000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ntfs_fill_super+0xa16/0x7e10 fs/ntfs/super.c:2871
 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: 0033:0x7feb7ac1a27a
Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe8bd7d398 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe8bd7d3f0 RCX: 00007feb7ac1a27a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffe8bd7d3b0
RBP: 00007ffe8bd7d3b0 R08: 00007ffe8bd7d3f0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000286 R12: 0000000020000260
R13: 0000000000000003 R14: 0000000000000004 R15: 0000000000000004
Modules linked in:
---[ end trace 38c8edf50dba2b08 ]---
RIP: 0010:__ntfs_malloc fs/ntfs/malloc.h:45 [inline]
RIP: 0010:ntfs_malloc_nofs fs/ntfs/malloc.h:66 [inline]
RIP: 0010:ntfs_read_inode_mount+0x1bc3/0x22b0 fs/ntfs/inode.c:1909
Code: ba 63 01 00 00 00 00 00 80 48 23 15 f7 54 de 08 48 89 ef be 42 00 60 00 e8 7a 87 48 ff 48 89 c5 e9 d9 f4 ff ff e8 cd fd 19 ff <0f> 0b e8 c6 fd 19 ff e8 c1 fd 19 ff 48 c7 c2 80 6c 94 88 4c 89 fe
RSP: 0018:ffff8880a8847a40 EFLAGS: 00010293
RAX: ffff8880956b4380 RBX: 0000000000000000 RCX: ffffffff82487c31
RDX: 0000000000000000 RSI: ffffffff824887a3 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000001 R12: ffff8880b2d92678
R13: ffff8880b2d92680 R14: ffff88808dbeea08 R15: ffff88809505e500
FS:  0000555555c66300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056141084c160 CR3: 00000000b4081000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (6):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/09/19 22:01 linux-4.19.y 3f8a27f9e27b dd9a85ff .config console log report syz C [disk image] [vmlinux] ci2-linux-4-19 kernel BUG in ntfs_read_inode_mount
2023/02/27 13:35 linux-4.19.y 3f8a27f9e27b 9189cb53 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 kernel BUG in ntfs_read_inode_mount
2023/02/15 20:58 linux-4.19.y 3f8a27f9e27b 6be0f1f5 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 kernel BUG in ntfs_read_inode_mount
2022/12/22 07:16 linux-4.19.y 3f8a27f9e27b 4067838e .config console log report info [disk image] [vmlinux] ci2-linux-4-19 kernel BUG in ntfs_read_inode_mount
2022/12/22 07:11 linux-4.19.y 3f8a27f9e27b 4067838e .config console log report info [disk image] [vmlinux] ci2-linux-4-19 kernel BUG in ntfs_read_inode_mount
2022/09/19 21:45 linux-4.19.y 3f8a27f9e27b dd9a85ff .config console log report info [disk image] [vmlinux] ci2-linux-4-19 kernel BUG in ntfs_read_inode_mount
* Struck through repros no longer work on HEAD.