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Zhang Xiaoxu b8affa0c64 orangefs: Fix kmemleak in orangefs_prepare_debugfs_help_string() 
[ Upstream commit d23417a5bf3a3afc55de5442eb46e1e60458b0a1 ]

When insert and remove the orangefs module, then debug_help_string will
be leaked:

  unreferenced object 0xffff8881652ba000 (size 4096):
    comm "insmod", pid 1701, jiffies 4294893639 (age 13218.530s)
    hex dump (first 32 bytes):
      43 6c 69 65 6e 74 20 44 65 62 75 67 20 4b 65 79  Client Debug Key
      77 6f 72 64 73 20 61 72 65 20 75 6e 6b 6e 6f 77  words are unknow
    backtrace:
      [<0000000004e6f8e3>] kmalloc_trace+0x27/0xa0
      [<0000000006f75d85>] orangefs_prepare_debugfs_help_string+0x5e/0x480 [orangefs]
      [<0000000091270a2a>] _sub_I_65535_1+0x57/0xf70 [crc_itu_t]
      [<000000004b1ee1a3>] do_one_initcall+0x87/0x2a0
      [<000000001d0614ae>] do_init_module+0xdf/0x320
      [<00000000efef068c>] load_module+0x2f98/0x3330
      [<000000006533b44d>] __do_sys_finit_module+0x113/0x1b0
      [<00000000a0da6f99>] do_syscall_64+0x35/0x80
      [<000000007790b19b>] entry_SYSCALL_64_after_hwframe+0x46/0xb0

When remove the module, should always free debug_help_string. Should
always free the allocated buffer when change the free_debug_help_string.

Signed-off-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-14 10:16:20 +01:00
..
acl.c
orangefs: posix acl fix...
2020-07-28 12:52:53 -04:00
dcache.c
fs: orangefs: fix error return code of orangefs_revalidate_lookup()
2021-11-18 14:04:23 +01:00
devorangefs-req.c
Merge branch 'work.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2018-06-16 16:21:50 +09:00
dir.c
orangefs: stop setting atime on inode dirty
2017-11-13 15:10:11 -05:00
downcall.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
file.c
orangefs: don't mess with I_DIRTY_TIMES in orangefs_flush
2020-04-08 09:39:11 -04:00
inode.c
orangefs: use attach/detach_page_private
2020-06-02 10:59:08 -07:00
Kconfig
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
Makefile
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
namei.c
orangefs: Add octal zero prefix
2019-09-12 14:17:16 -04:00
orangefs-bufmap.c
orangefs: Fix the size of a memory allocation in orangefs_bufmap_alloc()
2022-01-20 09:17:50 +01:00
orangefs-bufmap.h
orangefs: copy Orangefs-sized blocks into the pagecache if possible.
2019-05-03 14:32:39 -04:00
orangefs-cache.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
orangefs-debug.h
orangefs: remove unused code
2018-04-03 21:55:28 -04:00
orangefs-debugfs.c
orangefs: Fix kmemleak in orangefs_prepare_debugfs_help_string()
2023-01-14 10:16:20 +01:00
orangefs-debugfs.h
orangefs: fix build warning from debugfs cleanup patch
2019-07-04 10:30:33 +02:00
orangefs-dev-proto.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
orangefs-kernel.h
orangefs: get rid of knob code...
2020-04-08 09:38:51 -04:00
orangefs-mod.c
orangefs: Fix sysfs not cleanup when dev init failed
2023-01-14 10:15:53 +01:00
orangefs-sysfs.c
orangefs: add orangefs_revalidate_mapping
2019-05-03 14:32:39 -04:00
orangefs-sysfs.h
…
orangefs-utils.c
orangefs: skip inode writeout if nothing to write
2019-05-03 14:32:38 -04:00
protocol.h
orangefs: specify user pointers when using dev_map_desc and bufmap
2018-06-01 14:51:36 -04:00
super.c
orangefs: fix orangefs df output.
2021-07-20 16:05:48 +02:00
symlink.c
orangefs: stop setting atime on inode dirty
2017-11-13 15:10:11 -05:00
upcall.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
waitqueue.c
orangefs: service ops done for writeback are not killable
2019-05-03 14:32:38 -04:00
xattr.c
orangefs: implement xattr cache
2019-05-03 14:32:37 -04:00