syzbot


general protection fault in attr_data_read_resident

Status: auto-obsoleted due to no activity on 2023/06/03 13:38
Subsystems: ntfs3
[Documentation on labels]
Reported-by: syzbot+f9d08d0a84250cae0692@syzkaller.appspotmail.com
First crash: 654d, last: 620d
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: unable to handle kernel paging request in attr_data_read_resident ntfs3 C done done 27 166d 510d 0/28 auto-obsoleted due to no activity on 2024/09/09 09:56

Sample crash report:
general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027]
CPU: 0 PID: 15723 Comm: syz-executor.4 Not tainted 6.2.0-syzkaller-13534-gb01fe98d34f3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:attr_data_read_resident+0xa0/0x6d0 fs/ntfs3/attrib.c:1233
Code: 89 e6 e8 93 cf ce fe 45 84 e4 0f 85 66 03 00 00 e8 75 d3 ce fe 48 8d 7d 20 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 be 05 00 00 48 8d 7b 10 4c 8b 65 20 48 b8 00 00
RSP: 0018:ffffc900162c7a30 EFLAGS: 00010212
RAX: dffffc0000000000 RBX: ffff88803fde6108 RCX: ffffc9000de38000
RDX: 0000000000000004 RSI: ffffffff82b626bb RDI: 0000000000000020
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88803ff64000 R14: 000000000000000c R15: ffff888083b5e740
FS:  00007f636cbda700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32f2a000 CR3: 000000007dde9000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 ntfs_get_block_vbo+0x643/0xec0 fs/ntfs3/inode.c:560
 generic_block_bmap+0x127/0x1a0 fs/buffer.c:2691
 bmap+0xae/0x120 fs/inode.c:1799
 ioctl_fibmap fs/ioctl.c:77 [inline]
 file_ioctl fs/ioctl.c:327 [inline]
 do_vfs_ioctl+0xe45/0x1670 fs/ioctl.c:849
 __do_sys_ioctl fs/ioctl.c:868 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __x64_sys_ioctl+0x10c/0x210 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f636be8c0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f636cbda168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f636bfac050 RCX: 00007f636be8c0f9
RDX: 0000000020000340 RSI: 0000000000000001 RDI: 0000000000000009
RBP: 00007f636bee7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffeb12a230f R14: 00007f636cbda300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:attr_data_read_resident+0xa0/0x6d0 fs/ntfs3/attrib.c:1233
Code: 89 e6 e8 93 cf ce fe 45 84 e4 0f 85 66 03 00 00 e8 75 d3 ce fe 48 8d 7d 20 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 be 05 00 00 48 8d 7b 10 4c 8b 65 20 48 b8 00 00
RSP: 0018:ffffc900162c7a30 EFLAGS: 00010212
RAX: dffffc0000000000 RBX: ffff88803fde6108 RCX: ffffc9000de38000
RDX: 0000000000000004 RSI: ffffffff82b626bb RDI: 0000000000000020
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88803ff64000 R14: 000000000000000c R15: ffff888083b5e740
FS:  00007f636cbda700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32f2c000 CR3: 000000007dde9000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	89 e6                	mov    %esp,%esi
   2:	e8 93 cf ce fe       	callq  0xfececf9a
   7:	45 84 e4             	test   %r12b,%r12b
   a:	0f 85 66 03 00 00    	jne    0x376
  10:	e8 75 d3 ce fe       	callq  0xfeced38a
  15:	48 8d 7d 20          	lea    0x20(%rbp),%rdi
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 be 05 00 00    	jne    0x5f2
  34:	48 8d 7b 10          	lea    0x10(%rbx),%rdi
  38:	4c 8b 65 20          	mov    0x20(%rbp),%r12
  3c:	48                   	rex.W
  3d:	b8                   	.byte 0xb8

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/03/05 13:36 upstream b01fe98d34f3 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in attr_data_read_resident
2023/01/30 12:40 linux-next e2f86c02fdc9 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in attr_data_read_resident
* Struck through repros no longer work on HEAD.