From: Lakshmi Ramasubramanian <nramas@linux.microsoft.com>
To: zohar@linux.ibm.com, bauerman@linux.ibm.com, robh@kernel.org,
takahiro.akashi@linaro.org, gregkh@linuxfoundation.org,
will@kernel.org, catalin.marinas@arm.com, mpe@ellerman.id.au
Cc: james.morse@arm.com, sashal@kernel.org, benh@kernel.crashing.org,
paulus@samba.org, frowand.list@gmail.com,
vincenzo.frascino@arm.com, mark.rutland@arm.com,
dmitry.kasatkin@gmail.com, jmorris@namei.org, serge@hallyn.com,
pasha.tatashin@soleen.com, allison@lohutok.net,
masahiroy@kernel.org, bhsharma@redhat.com, mbrugger@suse.com,
hsinyi@chromium.org, tao.li@vivo.com, christophe.leroy@c-s.fr,
prsriva@linux.microsoft.com, balajib@linux.microsoft.com,
linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org
Subject: [PATCH v13 5/6] arm64: Free DTB buffer if fdt_open_into() fails
Date: Sat, 19 Dec 2020 09:57:12 -0800 [thread overview]
Message-ID: <20201219175713.18888-6-nramas@linux.microsoft.com> (raw)
In-Reply-To: <20201219175713.18888-1-nramas@linux.microsoft.com>
create_dtb() function allocates memory for the device tree blob (DTB)
and calls fdt_open_into(). If this call fails the memory allocated
for the DTB is not freed before returning from create_dtb() thereby
leaking memory.
Call vfree() to free the memory allocated for the DTB if fdt_open_into()
fails.
Co-developed-by: Prakhar Srivastava <prsriva@linux.microsoft.com>
Signed-off-by: Prakhar Srivastava <prsriva@linux.microsoft.com>
Signed-off-by: Lakshmi Ramasubramanian <nramas@linux.microsoft.com>
---
arch/arm64/kernel/machine_kexec_file.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/kernel/machine_kexec_file.c b/arch/arm64/kernel/machine_kexec_file.c
index 7de9c47dee7c..3e045cd62451 100644
--- a/arch/arm64/kernel/machine_kexec_file.c
+++ b/arch/arm64/kernel/machine_kexec_file.c
@@ -65,8 +65,10 @@ static int create_dtb(struct kimage *image,
/* duplicate a device tree blob */
ret = fdt_open_into(initial_boot_params, buf, buf_size);
- if (ret)
+ if (ret) {
+ vfree(buf);
return -EINVAL;
+ }
ret = of_kexec_setup_new_fdt(image, buf, initrd_load_addr,
initrd_len, cmdline);
--
2.29.2
next prev parent reply other threads:[~2020-12-19 17:59 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-19 17:57 [PATCH v13 0/6] Carry forward IMA measurement log on kexec on ARM64 Lakshmi Ramasubramanian
2020-12-19 17:57 ` [PATCH v13 1/6] ima: Move arch_ima_add_kexec_buffer() to ima Lakshmi Ramasubramanian
2020-12-22 14:22 ` Mimi Zohar
2020-12-22 22:53 ` Thiago Jung Bauermann
2020-12-19 17:57 ` [PATCH v13 2/6] powerpc: Move arch independent ima kexec functions to drivers/of/kexec.c Lakshmi Ramasubramanian
2020-12-22 14:26 ` Mimi Zohar
2020-12-22 18:53 ` Lakshmi Ramasubramanian
2020-12-22 19:45 ` Mimi Zohar
2020-12-22 21:02 ` Lakshmi Ramasubramanian
2020-12-23 0:40 ` Thiago Jung Bauermann
2020-12-23 5:03 ` Lakshmi Ramasubramanian
2020-12-23 0:19 ` Thiago Jung Bauermann
2020-12-23 5:01 ` Lakshmi Ramasubramanian
2020-12-23 17:57 ` Thiago Jung Bauermann
2020-12-23 0:48 ` Thiago Jung Bauermann
2020-12-23 4:56 ` Lakshmi Ramasubramanian
2020-12-31 22:28 ` Rob Herring
2020-12-19 17:57 ` [PATCH v13 3/6] kexec: Use fdt_appendprop_addrrange() to add ima buffer to FDT Lakshmi Ramasubramanian
2020-12-23 0:57 ` Thiago Jung Bauermann
2020-12-19 17:57 ` [PATCH v13 4/6] powerpc: Delete unused function delete_fdt_mem_rsv() Lakshmi Ramasubramanian
2020-12-23 1:08 ` Thiago Jung Bauermann
2020-12-23 5:09 ` Lakshmi Ramasubramanian
2020-12-19 17:57 ` Lakshmi Ramasubramanian [this message]
2020-12-23 1:11 ` [PATCH v13 5/6] arm64: Free DTB buffer if fdt_open_into() fails Thiago Jung Bauermann
2020-12-19 17:57 ` [PATCH v13 6/6] arm64: Add IMA log information in kimage used for kexec Lakshmi Ramasubramanian
2020-12-23 1:17 ` Thiago Jung Bauermann
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