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authorLinus Torvalds <torvalds@linux-foundation.org>2021-01-16 00:07:33 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-01-16 00:07:33 +0300
commitf288c895622f881324cf71ef9eec3af60ac8a197 (patch)
tree7adffc18ede2333dd19e9c5c2a86d045b12d8442
parentf4e087c666f54559cb4e530af1fbfc9967e14a15 (diff)
parent7b490a8ab0f2d3ab8d838a4ff22ae86edafd34a1 (diff)
downloadlinux-f288c895622f881324cf71ef9eec3af60ac8a197.tar.xz
Merge tag 'mips_fixes_5.11.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS fixes from Thomas Bogendoerfer: - fix coredumps on 64bit kernels - fix for alignment bugs preventing booting - fix checking for failed irq_alloc_desc calls * tag 'mips_fixes_5.11.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: MIPS: OCTEON: fix unreachable code in octeon_irq_init_ciu MIPS: relocatable: fix possible boot hangup with KASLR enabled MIPS: Fix malformed NT_FILE and NT_SIGINFO in 32bit coredumps MIPS: boot: Fix unaligned access with CONFIG_MIPS_RAW_APPENDED_DTB
-rw-r--r--arch/mips/boot/compressed/decompress.c3
-rw-r--r--arch/mips/cavium-octeon/octeon-irq.c2
-rw-r--r--arch/mips/kernel/binfmt_elfn32.c7
-rw-r--r--arch/mips/kernel/binfmt_elfo32.c7
-rw-r--r--arch/mips/kernel/relocate.c10
5 files changed, 25 insertions, 4 deletions
diff --git a/arch/mips/boot/compressed/decompress.c b/arch/mips/boot/compressed/decompress.c
index c61c641674e6..e3946b06e840 100644
--- a/arch/mips/boot/compressed/decompress.c
+++ b/arch/mips/boot/compressed/decompress.c
@@ -13,6 +13,7 @@
#include <linux/libfdt.h>
#include <asm/addrspace.h>
+#include <asm/unaligned.h>
/*
* These two variables specify the free mem region
@@ -117,7 +118,7 @@ void decompress_kernel(unsigned long boot_heap_start)
dtb_size = fdt_totalsize((void *)&__appended_dtb);
/* last four bytes is always image size in little endian */
- image_size = le32_to_cpup((void *)&__image_end - 4);
+ image_size = get_unaligned_le32((void *)&__image_end - 4);
/* copy dtb to where the booted kernel will expect it */
memcpy((void *)VMLINUX_LOAD_ADDRESS_ULL + image_size,
diff --git a/arch/mips/cavium-octeon/octeon-irq.c b/arch/mips/cavium-octeon/octeon-irq.c
index bd47e15d02c7..be5d4afcd30f 100644
--- a/arch/mips/cavium-octeon/octeon-irq.c
+++ b/arch/mips/cavium-octeon/octeon-irq.c
@@ -1444,7 +1444,7 @@ static void octeon_irq_setup_secondary_ciu2(void)
static int __init octeon_irq_init_ciu(
struct device_node *ciu_node, struct device_node *parent)
{
- unsigned int i, r;
+ int i, r;
struct irq_chip *chip;
struct irq_chip *chip_edge;
struct irq_chip *chip_mbox;
diff --git a/arch/mips/kernel/binfmt_elfn32.c b/arch/mips/kernel/binfmt_elfn32.c
index 6ee3f7218c67..c4441416e96b 100644
--- a/arch/mips/kernel/binfmt_elfn32.c
+++ b/arch/mips/kernel/binfmt_elfn32.c
@@ -103,4 +103,11 @@ jiffies_to_old_timeval32(unsigned long jiffies, struct old_timeval32 *value)
#undef ns_to_kernel_old_timeval
#define ns_to_kernel_old_timeval ns_to_old_timeval32
+/*
+ * Some data types as stored in coredump.
+ */
+#define user_long_t compat_long_t
+#define user_siginfo_t compat_siginfo_t
+#define copy_siginfo_to_external copy_siginfo_to_external32
+
#include "../../../fs/binfmt_elf.c"
diff --git a/arch/mips/kernel/binfmt_elfo32.c b/arch/mips/kernel/binfmt_elfo32.c
index 6dd103d3cebb..7b2a23f48c1a 100644
--- a/arch/mips/kernel/binfmt_elfo32.c
+++ b/arch/mips/kernel/binfmt_elfo32.c
@@ -106,4 +106,11 @@ jiffies_to_old_timeval32(unsigned long jiffies, struct old_timeval32 *value)
#undef ns_to_kernel_old_timeval
#define ns_to_kernel_old_timeval ns_to_old_timeval32
+/*
+ * Some data types as stored in coredump.
+ */
+#define user_long_t compat_long_t
+#define user_siginfo_t compat_siginfo_t
+#define copy_siginfo_to_external copy_siginfo_to_external32
+
#include "../../../fs/binfmt_elf.c"
diff --git a/arch/mips/kernel/relocate.c b/arch/mips/kernel/relocate.c
index 47aeb3350a76..0e365b7c742d 100644
--- a/arch/mips/kernel/relocate.c
+++ b/arch/mips/kernel/relocate.c
@@ -187,8 +187,14 @@ static int __init relocate_exception_table(long offset)
static inline __init unsigned long rotate_xor(unsigned long hash,
const void *area, size_t size)
{
- size_t i;
- unsigned long *ptr = (unsigned long *)area;
+ const typeof(hash) *ptr = PTR_ALIGN(area, sizeof(hash));
+ size_t diff, i;
+
+ diff = (void *)ptr - area;
+ if (unlikely(size < diff + sizeof(hash)))
+ return hash;
+
+ size = ALIGN_DOWN(size - diff, sizeof(hash));
for (i = 0; i < size / sizeof(hash); i++) {
/* Rotate by odd number of bits and XOR. */