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pstore: Allocate compression during late_initcall()

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ramoops's call of pstore_register() was recently moved to run during
late_initcall() because the crypto backend may not have been ready during
postcore_initcall(). This meant early-boot crash dumps were not getting
caught by pstore any more.

Instead, lets allow calls to pstore_register() earlier, and once crypto
is ready we can initialize the compression.

Reported-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Tested-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Fixes: cb3bee0369 ("pstore: Use crypto compress API")
[kees: trivial rebase]
Signed-off-by: Kees Cook <keescook@chromium.org>
Tested-by: Guenter Roeck <groeck@chromium.org>
This commit is contained in:
Joel Fernandes (Google) 2018-10-17 03:13:55 -07:00 committed by Kees Cook
parent cb095afd44
commit 416031653e
2 changed files with 10 additions and 2 deletions
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10
fs/pstore/platform.c
View File

@ -786,13 +786,21 @@ static int __init pstore_init(void)
pstore_choose_compression();
/*
* Check if any pstore backends registered earlier but did not
* initialize compression because crypto was not ready. If so,
* initialize compression now.
*/
if (psinfo && !tfm)
allocate_buf_for_compression();
ret = pstore_init_fs();
if (ret)
return ret;
return 0;
}
module_init(pstore_init)
late_initcall(pstore_init);
static void __exit pstore_exit(void)
{

2
fs/pstore/ram.c
View File

@ -940,7 +940,7 @@ static int __init ramoops_init(void)
ramoops_register_dummy();
return platform_driver_register(&ramoops_driver);
}
late_initcall(ramoops_init);
postcore_initcall(ramoops_init);
static void __exit ramoops_exit(void)
{