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pstore/ram: Fix error-path memory leak in persistent_ram_new() callers

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For callers that allocated a label for persistent_ram_new(), if the call
fails, they must clean up the allocation.

Suggested-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Fixes: 1227daa43b ("pstore/ram: Clarify resource reservation labels")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/lkml/20191211191353.14385-1-navid.emamdoost@gmail.com
Signed-off-by: Kees Cook <keescook@chromium.org>
This commit is contained in:
Kees Cook 2019-12-30 11:48:10 -08:00
parent d1eef1c619
commit 8df955a32a
1 changed files with 2 additions and 0 deletions
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fs/pstore/ram.c
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@ -577,6 +577,7 @@ static int ramoops_init_przs(const char *name,
dev_err(dev, "failed to request %s mem region (0x%zx@0x%llx): %d\n",
name, record_size,
(unsigned long long)*paddr, err);
kfree(label);
while (i > 0) {
i--;
@ -622,6 +623,7 @@ static int ramoops_init_prz(const char *name,
dev_err(dev, "failed to request %s mem region (0x%zx@0x%llx): %d\n",
name, sz, (unsigned long long)*paddr, err);
kfree(label);
return err;
}