If you are going to run some scripted tool to randomly
corrupt the filesystem to find failures, then you have an
ethical and moral responsibility to do some of the work to
narrow down and identify the cause of the failure, not just
throw them at someone to do all the work.

--D

On Sat, Apr 30, 2022 at 07:17:27AM +0000, bugzilla-daemon@kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=215921
> 
>             Bug ID: 215921
>            Summary: kernel BUG at fs/xfs/xfs_message.c:110!
>            Product: File System
>            Version: 2.5
>     Kernel Version: 5.17
>           Hardware: All
>                 OS: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: XFS
>           Assignee: filesystem_xfs@kernel-bugs.kernel.org
>           Reporter: yanming@tju.edu.cn
>         Regression: No
> 
> Created attachment 300858 [details]
>   --> https://bugzilla.kernel.org/attachment.cgi?id=300858&action=edit
> case.c, contains file operations to reproduce the bug
> 
> I have encountered a XFS bug in the kernel v5.17.
> 
> I have uploaded the system call sequence as case.c, and a modified image can
> be
> found on google net disk
>
> (https://drive.google.com/file/d/1EzzOv74RIXjRdjMD1emDYN3241goinlp/view?usp=sharing).
> You can reproduce this bug by running the following commands:
> 
> gcc -o case case.c
> losetup /dev/loop0 case.img
> mount -o
> "allocsize=4096,attr2,discard,nogrpid,filestreams,noikeep,noalign,wsync"
> /dev/loop0 /mnt/test/
> ./case
> 
> The kernel crash log is shown below:
> 
> 4,918,9602591861,-;XFS (loop0): correcting sb_features alignment problem
> 0,919,9602592537,-;XFS: Assertion failed: mp->m_sb.sb_versionnum &
> XFS_SB_VERSION_DIRV2BIT, file: fs/xfs/libxfs/xfs_dir2.c, line: 99
> 4,920,9602592552,-;------------[ cut here ]------------
> 2,921,9602592553,-;kernel BUG at fs/xfs/xfs_message.c:110!
> 4,922,9602592559,-;invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
> 4,923,9602592564,-;CPU: 7 PID: 2786 Comm: mount Not tainted 5.17.0 #7
> 4,924,9602592567,-;Hardware name: Dell Inc. OptiPlex 9020/03CPWF, BIOS A14
> 09/14/2015
> 4,925,9602592569,-;RIP: 0010:assfail+0x4f/0x54
> 4,926,9602592576,-;Code: c1 e2 2a 83 e0 07 48 c1 e9 03 8a 14 11 38 c2 7f 10
> 84
> d2 74 0c 48 c7 c7 ac 72 da a9 e8 79 f7 7d fd 80 3d 7e 4e 3c 01 00 74 02 <0f>
> 0b
> 0f 0b c3 48 8d 45 10 48 8d 54 24 28 4c 89 f6 48 c7 c7 00 a3
> 4,927,9602592579,-;RSP: 0018:ffff88810f897b40 EFLAGS: 00010202
> 4,928,9602592583,-;RAX: 0000000000000004 RBX: ffff88811c8d0000 RCX:
> 1ffffffff53b4e55
> 4,929,9602592585,-;RDX: dffffc0000000000 RSI: 000000000000000a RDI:
> ffffed1021f12f5a
> 4,930,9602592588,-;RBP: ffff88810f897cb0 R08: 00000000ffffffea R09:
> ffffed103aafe4eb
> 4,931,9602592590,-;R10: ffff8881d57f2757 R11: ffffed103aafe4ea R12:
> ffff88811c8d05b8
> 4,932,9602592592,-;R13: ffff88811c8d0000 R14: ffff88811c8d00c8 R15:
> 000000002800c9fa
> 4,933,9602592594,-;FS:  00007fa6c6b2a840(0000) GS:ffff8881d57c0000(0000)
> knlGS:0000000000000000
> 4,934,9602592597,-;CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> 4,935,9602592599,-;CR2: 00007fffe0409d30 CR3: 0000000112a58004 CR4:
> 00000000001706e0
> 4,936,9602592602,-;Call Trace:
> 4,937,9602592604,-; <TASK>
> 4,938,9602592605,-; xfs_da_mount+0x7e5/0xad0
> 4,939,9602592612,-; ? xfs_uuid_mount+0x290/0x3a0
> 4,940,9602592616,-; xfs_mountfs+0xab5/0x19f0
> 4,941,9602592619,-; ? create_object+0x649/0xaf0
> 4,942,9602592623,-; ? kasan_unpoison+0x23/0x50
> 4,943,9602592627,-; ? xfs_mount_reset_sbqflags+0x100/0x100
> 4,944,9602592631,-; ? kmem_alloc+0x8e/0x290
> 4,945,9602592634,-; ? xfs_filestream_put_ag+0x30/0x30
> 4,946,9602592638,-; ? xfs_mru_cache_create+0x339/0x540
> 4,947,9602592642,-; xfs_fs_fill_super+0xc24/0x1710
> 4,948,9602592646,-; get_tree_bdev+0x379/0x650
> 4,949,9602592650,-; ? xfs_fs_sync_fs+0x210/0x210
> 4,950,9602592654,-; vfs_get_tree+0x7f/0x2b0
> 4,951,9602592658,-; ? ns_capable_common+0x52/0xd0
> 4,952,9602592662,-; path_mount+0x47e/0x19b0
> 4,953,9602592667,-; ? finish_automount+0x5d0/0x5d0
> 4,954,9602592671,-; ? user_path_at_empty+0x40/0x50
> 4,955,9602592674,-; ? kmem_cache_free+0xa5/0x300
> 4,956,9602592677,-; do_mount+0xc5/0xe0
> 4,957,9602592681,-; ? path_mount+0x19b0/0x19b0
> 4,958,9602592684,-; ? _copy_from_user+0x38/0x70
> 4,959,9602592690,-; ? copy_mount_options+0x69/0x120
> 4,960,9602592694,-; __x64_sys_mount+0x127/0x190
> 4,961,9602592698,-; do_syscall_64+0x3b/0x90
> 4,962,9602592702,-; entry_SYSCALL_64_after_hwframe+0x44/0xae
> 4,963,9602592707,-;RIP: 0033:0x7fa6c6d89cae
> 4,964,9602592710,-;Code: 48 8b 0d e5 c1 0c 00 f7 d8 64 89 01 48 83 c8 ff c3
> 66
> 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8 a5 00 00 00 0f 05 <48>
> 3d
> 01 f0 ff ff 73 01 c3 48 8b 0d b2 c1 0c 00 f7 d8 64 89 01 48
> 4,965,9602592713,-;RSP: 002b:00007fffe040b588 EFLAGS: 00000246 ORIG_RAX:
> 00000000000000a5
> 4,966,9602592716,-;RAX: ffffffffffffffda RBX: 00007fa6c6ebb204 RCX:
> 00007fa6c6d89cae
> 4,967,9602592719,-;RDX: 0000557359be6830 RSI: 0000557359be6870 RDI:
> 0000557359be6850
> 4,968,9602592721,-;RBP: 0000557359be6530 R08: 0000557359be6790 R09:
> 00007fffe040a300
> 4,969,9602592723,-;R10: 0000000000000000 R11: 0000000000000246 R12:
> 0000000000000000
> 4,970,9602592725,-;R13: 0000557359be6850 R14: 0000557359be6830 R15:
> 0000557359be6530
> 4,971,9602592728,-; </TASK>
> 4,972,9602592729,-;Modules linked in: x86_pkg_temp_thermal efivarfs
> 4,973,9602592736,-;---[ end trace 0000000000000000 ]---
> 
> -- 
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