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x86/microcode/intel: Fix memleak in save_microcode_patch()

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[ Upstream commit 0218c766263e70795c5eaa17d75ed54bca350950 ]

Free useless ucode_patch entry when it's replaced.

[ bp: Drop the memfree_patch() two-liner. ]

Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Srinivas REDDY Eeda <srinivas.eeda@oracle.com>
Link: http://lkml.kernel.org/r/888102f0-fd22-459d-b090-a1bd8a00cb2b@default
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Zhenzhong Duan 2018-06-22 13:51:26 +02:00 committed by Greg Kroah-Hartman
parent 99654c9ffc
commit b580cead62
1 changed files with 4 additions and 1 deletions
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5
arch/x86/kernel/cpu/microcode/intel.c
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@ -190,8 +190,11 @@ static void save_microcode_patch(void *data, unsigned int size)
p = memdup_patch(data, size);
if (!p)
pr_err("Error allocating buffer %p\n", data);
else
else {
list_replace(&iter->plist, &p->plist);
kfree(iter->data);
kfree(iter);
}
}
}