From: Thorsten Blum <thorsten.blum@linux.dev>
To: Madhavan Srinivasan <maddy@linux.ibm.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Nicholas Piggin <npiggin@gmail.com>,
"Christophe Leroy (CS GROUP)" <chleroy@kernel.org>,
Kees Cook <kees@kernel.org>,
"Pratik R. Sampat" <psampat@linux.ibm.com>
Cc: Thorsten Blum <thorsten.blum@linux.dev>,
stable@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] powerpc/pseries: fix memory leak on krealloc failure in papr_init
Date: Sun, 14 Jun 2026 16:23:56 +0200 [thread overview]
Message-ID: <20260614142356.658212-2-thorsten.blum@linux.dev> (raw)
When krealloc() fails, free the original esi_buf before returning to
avoid a memory leak.
Fixes: 3c14b73454cf ("powerpc/pseries: Interface to represent PAPR firmware attributes")
Cc: stable@vger.kernel.org
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
---
arch/powerpc/platforms/pseries/papr_platform_attributes.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/papr_platform_attributes.c b/arch/powerpc/platforms/pseries/papr_platform_attributes.c
index ff8adda02341..aacdaa1ebf63 100644
--- a/arch/powerpc/platforms/pseries/papr_platform_attributes.c
+++ b/arch/powerpc/platforms/pseries/papr_platform_attributes.c
@@ -271,11 +271,9 @@ static int __init papr_init(void)
esi_buf_size = ESI_HDR_SIZE + (CURR_MAX_ESI_ATTRS * max_esi_attrs);
temp_esi_buf = krealloc(esi_buf, esi_buf_size, GFP_KERNEL);
- if (temp_esi_buf)
- esi_buf = temp_esi_buf;
- else
- return -ENOMEM;
-
+ if (!temp_esi_buf)
+ goto out_free_esi_buf;
+ esi_buf = temp_esi_buf;
goto retry;
}
reply other threads:[~2026-06-14 14:24 UTC|newest]
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