The upstream fix is likely this:
>From b73eba2a867e10b9b4477738677341f3307c07bb Mon Sep 17 00:00:00 2001
From: Gang He <g...@suse.com>
Date: Sat, 4 Jan 2020 13:00:22 -0800
Subject: [PATCH] ocfs2: fix the crash due to call ocfs2_get_dlm_debug once
less
Because ocfs2_get_dlm_debug() function is called once less here, ocfs2
file system will trigger the system crash, usually after ocfs2 file
system is unmounted.
This system crash is caused by a generic memory corruption, these crash
backtraces are not always the same, for exapmle,
ocfs2: Unmounting device (253,16) on (node 172167785)
general protection fault: 0000 [#1] SMP PTI
CPU: 3 PID: 14107 Comm: fence_legacy Kdump:
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996)
RIP: 0010:__kmalloc+0xa5/0x2a0
Code: 00 00 4d 8b 07 65 4d 8b
RSP: 0018:ffffaa1fc094bbe8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: d310a8800d7a3faf RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000dc0 RDI: ffff96e68fc036c0
RBP: d310a8800d7a3faf R08: ffff96e6ffdb10a0 R09: 00000000752e7079
R10: 000000000001c513 R11: 0000000004091041 R12: 0000000000000dc0
R13: 0000000000000039 R14: ffff96e68fc036c0 R15: ffff96e68fc036c0
FS: 00007f699dfba540(0000) GS:ffff96e6ffd80000(0000) knlGS:00000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f3a9d9b768 CR3: 000000002cd1c000 CR4: 00000000000006e0
Call Trace:
ext4_htree_store_dirent+0x35/0x100 [ext4]
htree_dirblock_to_tree+0xea/0x290 [ext4]
ext4_htree_fill_tree+0x1c1/0x2d0 [ext4]
ext4_readdir+0x67c/0x9d0 [ext4]
iterate_dir+0x8d/0x1a0
__x64_sys_getdents+0xab/0x130
do_syscall_64+0x60/0x1f0
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f699d33a9fb
This regression problem was introduced by commit e581595ea29c ("ocfs: no
need to check return value of debugfs_create functions").
Link: http://lkml.kernel.org/r/20191225061501.13587-1-...@suse.com
Fixes: e581595ea29c ("ocfs: no need to check return value of debugfs_create
functions")
Signed-off-by: Gang He <g...@suse.com>
Acked-by: Joseph Qi <joseph...@linux.alibaba.com>
Cc: Mark Fasheh <m...@fasheh.com>
Cc: Joel Becker <jl...@evilplan.org>
Cc: Junxiao Bi <junxiao...@oracle.com>
Cc: Changwei Ge <gechang...@live.cn>
Cc: Gang He <g...@suse.com>
Cc: Jun Piao <piao...@huawei.com>
Cc: <sta...@vger.kernel.org> [5.3+]
Signed-off-by: Andrew Morton <a...@linux-foundation.org>
Signed-off-by: Linus Torvalds <torva...@linux-foundation.org>
as reported in upstream bug. Giving it a try to finally suggest as a SRU
to the kernel team.
** Changed in: ocfs2-tools (Ubuntu Eoan)
Status: In Progress => Invalid
** Changed in: ocfs2-tools (Ubuntu Focal)
Status: In Progress => Invalid
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https://bugs.launchpad.net/bugs/1852122
Title:
ocfs2-tools is causing kernel panics in Ubuntu Focal
(Ubuntu-5.4.0-9.12)
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