From: Dan Carpenter <dan.carpenter@linaro.org>
To: Yazen Ghannam <yazen.ghannam@amd.com>
Cc: Yazen Ghannam <Yazen.Ghannam@amd.com>,
Tony Luck <tony.luck@intel.com>, Borislav Petkov <bp@alien8.de>,
naveenkrishna.chatradhi@amd.com, muralidhara.mk@amd.com,
linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-janitors@vger.kernel.org
Subject: [PATCH] RAS/AMD/FMPM: Fix off by one in error handling
Date: Wed, 6 Mar 2024 08:30:46 +0300 [thread overview]
Message-ID: <6fdec71a-846b-4cd0-af69-e5f6cd12f4f6@moroto.mountain> (raw)
Decrement "i" before the first iteration. Depending on where this fails
it could free something from one element beyond the end of the
fru_records[] array.
Fixes: 6f15e617cc99 ("RAS: Introduce a FRU memory poison manager")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
---
drivers/ras/amd/fmpm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/ras/amd/fmpm.c b/drivers/ras/amd/fmpm.c
index 0963c9e7b853..2f4ac9591c8f 100644
--- a/drivers/ras/amd/fmpm.c
+++ b/drivers/ras/amd/fmpm.c
@@ -817,7 +817,7 @@ static int allocate_records(void)
return ret;
out_free:
- for (; i >= 0; i--)
+ while (--i >= 0)
kfree(fru_records[i]);
kfree(fru_records);
--
2.43.0
next reply other threads:[~2024-03-06 5:30 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-06 5:30 Dan Carpenter [this message]
2024-03-06 9:29 ` [PATCH] RAS/AMD/FMPM: Fix off by one in error handling Borislav Petkov
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