syzbot


WARNING in attr_data_get_block (3)

Status: auto-obsoleted due to no activity on 2024/01/27 12:18
Subsystems: ntfs3
[Documentation on labels]
Reported-by: syzbot+a9850b21d99643eadbb8@syzkaller.appspotmail.com
First crash: 267d, last: 250d
Cause bisection: introduced by (bisect log) :
commit 6e5be40d32fb1907285277c02e74493ed43d77fe
Author: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Date: Fri Aug 13 14:21:30 2021 +0000

  fs/ntfs3: Add NTFS3 in fs/Kconfig and fs/Makefile

Crash: BUG: unable to handle kernel NULL pointer dereference in ntfs_sparse_cluster (log)
Repro: C syz .config
  
Fix bisection: fixed by (bisect log) :
commit 4ad5c924df6cd6d85708fa23f9d9a2b78a2e428e
Author: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Date: Fri Sep 22 10:07:59 2023 +0000

  fs/ntfs3: Allow repeated call to ntfs3_put_sbi

  
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [ntfs3?] WARNING in attr_data_get_block (3) 0 (3) 2023/11/22 14:48
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in attr_data_get_block (4) ntfs3 C error 1 60d 78d 0/27 upstream: reported C repro on 2024/04/08 08:26
upstream WARNING in attr_data_get_block (2) ntfs3 C error done 4 426d 458d 0/27 auto-obsoleted due to no activity on 2023/08/23 09:08
upstream WARNING in attr_data_get_block ntfs3 1 606d 602d 0/27 auto-obsoleted due to no activity on 2023/02/25 17:56
Last patch testing requests (3)
Created Duration User Patch Repo Result
2023/11/19 11:27 22m tintinm2017@gmail.com https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master OK log
2023/10/19 12:06 11m retest repro upstream report log
2023/10/06 06:11 17m almaz.alexandrovich@paragon-software.com https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master report log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5033 at fs/ntfs3/attrib.c:1059 attr_data_get_block+0x1926/0x2da0
Modules linked in:
CPU: 1 PID: 5033 Comm: syz-executor106 Not tainted 6.6.0-rc3-syzkaller-00214-ge402b08634b3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:attr_data_get_block+0x1926/0x2da0 fs/ntfs3/attrib.c:1059
Code: 80 e1 07 80 c1 03 38 c1 0f 8c 48 ff ff ff 48 8d bc 24 e0 01 00 00 e8 19 74 18 ff 48 8b 54 24 58 e9 31 ff ff ff e8 ba 01 be fe <0f> 0b bb ea ff ff ff e9 11 fa ff ff e8 a9 01 be fe e9 0f f9 ff ff
RSP: 0018:ffffc9000406f6a0 EFLAGS: 00010293
RAX: ffffffff82d008b6 RBX: 00000000ffffffff RCX: ffff888025380000
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 00000000ffffffff
RBP: ffffc9000406f908 R08: ffffffff82d0038f R09: 1ffffffff20df689
R10: dffffc0000000000 R11: fffffbfff20df68a R12: 1ffff9200080def4
R13: 000000000000001c R14: ffff888076620140 R15: dffffc0000000000
FS:  00007f36f9b9c6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f36f9b9cd58 CR3: 0000000026956000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ntfs_fallocate+0xc6d/0x1100 fs/ntfs3/file.c:610
 vfs_fallocate+0x551/0x6b0 fs/open.c:324
 do_vfs_ioctl+0x22da/0x2b40 fs/ioctl.c:850
 __do_sys_ioctl fs/ioctl.c:869 [inline]
 __se_sys_ioctl+0x81/0x170 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f37091ff5a9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f36f9b9c218 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000000003f RCX: 00007f37091ff5a9
RDX: 0000000020000780 RSI: 0000000040305828 RDI: 0000000000000004
RBP: 00007f37092aa6d8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f37092aa6d0
R13: 00007f3709277a14 R14: 726665646f747561 R15: 61635f6563617073
 </TASK>

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/10/01 19:58 upstream e402b08634b3 8e26a358 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] ci2-upstream-fs WARNING in attr_data_get_block
2023/10/05 07:47 upstream ba7d997a2a29 b7d7ff54 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in attr_data_get_block
2023/10/01 19:35 upstream e402b08634b3 8e26a358 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in attr_data_get_block
* Struck through repros no longer work on HEAD.