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authorDaniel Golle <daniel@makrotopia.org>2020-01-04 11:47:50 +0200
committerDaniel Golle <daniel@makrotopia.org>2020-01-04 16:23:21 +0200
commitf64c64a91c86e07a9d34ff268df77b9625e11bd1 (patch)
tree0d511a8b9acb0788540337582bb52e853ad21257 /target/linux/generic
parente98e046f06f388e49c12e52b3a333a7e77c008cd (diff)
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generic: fix compiler error in OpenWrt's kexec patch
330-MIPS-kexec-Accept-command-line-parameters-from-users.patch causes problems when building with -Werror=unused-result. arch/mips/kernel/machine_kexec.c: In function 'machine_kexec_init_argv': arch/mips/kernel/machine_kexec.c:76:2: error: ignoring return value of 'copy_from_user', declared with attribute warn_unused_result [-Werror=unused-result] copy_from_user(kexec_argv_buf, buf, size); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors Fix this by handling the return value in an appropriate way. Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Diffstat (limited to 'target/linux/generic')
-rw-r--r--target/linux/generic/pending-4.14/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch14
-rw-r--r--target/linux/generic/pending-4.19/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch14
-rw-r--r--target/linux/generic/pending-4.9/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch12
3 files changed, 23 insertions, 17 deletions
diff --git a/target/linux/generic/pending-4.14/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch b/target/linux/generic/pending-4.14/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch
index 1187543a46..44d85b5b86 100644
--- a/target/linux/generic/pending-4.14/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch
+++ b/target/linux/generic/pending-4.14/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch
@@ -29,7 +29,7 @@ Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
int (*_machine_kexec_prepare)(struct kimage *) = NULL;
void (*_machine_kexec_shutdown)(void) = NULL;
-@@ -28,6 +25,99 @@ atomic_t kexec_ready_to_reboot = ATOMIC_
+@@ -28,6 +25,101 @@ atomic_t kexec_ready_to_reboot = ATOMIC_
void (*_crash_smp_send_stop)(void) = NULL;
#endif
@@ -81,7 +81,9 @@ Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
+ pr_warn("kexec command line truncated to %zd bytes\n", size);
+
+ /* Copy to kernel space */
-+ copy_from_user(kexec_argv_buf, buf, size);
++ if (copy_from_user(kexec_argv_buf, buf, size))
++ pr_warn("kexec command line copy to kernel space failed\n");
++
+ kexec_argv_buf[size - 1] = 0;
+}
+
@@ -129,7 +131,7 @@ Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
static void kexec_image_info(const struct kimage *kimage)
{
unsigned long i;
-@@ -52,6 +142,18 @@ int
+@@ -52,6 +144,18 @@ int
machine_kexec_prepare(struct kimage *kimage)
{
kexec_image_info(kimage);
@@ -148,7 +150,7 @@ Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
if (_machine_kexec_prepare)
return _machine_kexec_prepare(kimage);
-@@ -89,10 +191,12 @@ machine_kexec(struct kimage *image)
+@@ -89,10 +193,12 @@ machine_kexec(struct kimage *image)
unsigned long *ptr;
reboot_code_buffer =
@@ -162,7 +164,7 @@ Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
if (image->type == KEXEC_TYPE_DEFAULT) {
kexec_indirection_page =
-@@ -100,9 +204,19 @@ machine_kexec(struct kimage *image)
+@@ -100,9 +206,19 @@ machine_kexec(struct kimage *image)
} else {
kexec_indirection_page = (unsigned long)&image->head;
}
@@ -184,7 +186,7 @@ Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
/*
* The generic kexec code builds a page list with physical
-@@ -124,15 +238,16 @@ machine_kexec(struct kimage *image)
+@@ -124,15 +240,16 @@ machine_kexec(struct kimage *image)
/*
* we do not want to be bothered.
*/
diff --git a/target/linux/generic/pending-4.19/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch b/target/linux/generic/pending-4.19/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch
index 1187543a46..44d85b5b86 100644
--- a/target/linux/generic/pending-4.19/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch
+++ b/target/linux/generic/pending-4.19/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch
@@ -29,7 +29,7 @@ Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
int (*_machine_kexec_prepare)(struct kimage *) = NULL;
void (*_machine_kexec_shutdown)(void) = NULL;
-@@ -28,6 +25,99 @@ atomic_t kexec_ready_to_reboot = ATOMIC_
+@@ -28,6 +25,101 @@ atomic_t kexec_ready_to_reboot = ATOMIC_
void (*_crash_smp_send_stop)(void) = NULL;
#endif
@@ -81,7 +81,9 @@ Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
+ pr_warn("kexec command line truncated to %zd bytes\n", size);
+
+ /* Copy to kernel space */
-+ copy_from_user(kexec_argv_buf, buf, size);
++ if (copy_from_user(kexec_argv_buf, buf, size))
++ pr_warn("kexec command line copy to kernel space failed\n");
++
+ kexec_argv_buf[size - 1] = 0;
+}
+
@@ -129,7 +131,7 @@ Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
static void kexec_image_info(const struct kimage *kimage)
{
unsigned long i;
-@@ -52,6 +142,18 @@ int
+@@ -52,6 +144,18 @@ int
machine_kexec_prepare(struct kimage *kimage)
{
kexec_image_info(kimage);
@@ -148,7 +150,7 @@ Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
if (_machine_kexec_prepare)
return _machine_kexec_prepare(kimage);
-@@ -89,10 +191,12 @@ machine_kexec(struct kimage *image)
+@@ -89,10 +193,12 @@ machine_kexec(struct kimage *image)
unsigned long *ptr;
reboot_code_buffer =
@@ -162,7 +164,7 @@ Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
if (image->type == KEXEC_TYPE_DEFAULT) {
kexec_indirection_page =
-@@ -100,9 +204,19 @@ machine_kexec(struct kimage *image)
+@@ -100,9 +206,19 @@ machine_kexec(struct kimage *image)
} else {
kexec_indirection_page = (unsigned long)&image->head;
}
@@ -184,7 +186,7 @@ Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
/*
* The generic kexec code builds a page list with physical
-@@ -124,15 +238,16 @@ machine_kexec(struct kimage *image)
+@@ -124,15 +240,16 @@ machine_kexec(struct kimage *image)
/*
* we do not want to be bothered.
*/
diff --git a/target/linux/generic/pending-4.9/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch b/target/linux/generic/pending-4.9/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch
index c7abd99b3b..8d50208d5b 100644
--- a/target/linux/generic/pending-4.9/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch
+++ b/target/linux/generic/pending-4.9/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch
@@ -29,7 +29,7 @@ Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
int (*_machine_kexec_prepare)(struct kimage *) = NULL;
void (*_machine_kexec_shutdown)(void) = NULL;
-@@ -28,9 +25,115 @@ atomic_t kexec_ready_to_reboot = ATOMIC_
+@@ -28,9 +25,117 @@ atomic_t kexec_ready_to_reboot = ATOMIC_
void (*_crash_smp_send_stop)(void) = NULL;
#endif
@@ -81,7 +81,9 @@ Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
+ pr_warn("kexec command line truncated to %zd bytes\n", size);
+
+ /* Copy to kernel space */
-+ copy_from_user(kexec_argv_buf, buf, size);
++ if (copy_from_user(kexec_argv_buf, buf, size))
++ pr_warn("kexec command line copy to kernel space failed\n");
++
+ kexec_argv_buf[size - 1] = 0;
+}
+
@@ -145,7 +147,7 @@ Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
if (_machine_kexec_prepare)
return _machine_kexec_prepare(kimage);
return 0;
-@@ -67,10 +170,12 @@ machine_kexec(struct kimage *image)
+@@ -67,10 +172,12 @@ machine_kexec(struct kimage *image)
unsigned long *ptr;
reboot_code_buffer =
@@ -159,7 +161,7 @@ Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
if (image->type == KEXEC_TYPE_DEFAULT) {
kexec_indirection_page =
-@@ -78,9 +183,19 @@ machine_kexec(struct kimage *image)
+@@ -78,9 +185,19 @@ machine_kexec(struct kimage *image)
} else {
kexec_indirection_page = (unsigned long)&image->head;
}
@@ -181,7 +183,7 @@ Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
/*
* The generic kexec code builds a page list with physical
-@@ -102,15 +217,16 @@ machine_kexec(struct kimage *image)
+@@ -102,15 +219,16 @@ machine_kexec(struct kimage *image)
/*
* we do not want to be bothered.
*/
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-30 21:18:38 +0000