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-rw-r--r--lib/Kconfig.debug3
-rw-r--r--lib/Kconfig.ubsan13
-rw-r--r--lib/kunit/try-catch.c2
-rw-r--r--lib/logic_iomem.c8
-rw-r--r--lib/lz4/lz4_decompress.c8
-rw-r--r--lib/raid6/test/Makefile4
-rw-r--r--lib/raid6/test/test.c1
-rw-r--r--lib/stackdepot.c24
-rw-r--r--lib/test_kmod.c1
-rw-r--r--lib/test_lockup.c11
-rw-r--r--lib/test_ubsan.c22
-rw-r--r--lib/test_xarray.c22
-rw-r--r--lib/vsprintf.c51
-rw-r--r--lib/xarray.c4
14 files changed, 80 insertions, 94 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 2a9b6dcdac4f..55e89b237b6f 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -414,7 +414,8 @@ config SECTION_MISMATCH_WARN_ONLY
If unsure, say Y.
config DEBUG_FORCE_FUNCTION_ALIGN_64B
- bool "Force all function address 64B aligned" if EXPERT
+ bool "Force all function address 64B aligned"
+ depends on EXPERT && (X86_64 || ARM64 || PPC32 || PPC64 || ARC)
help
There are cases that a commit from one domain changes the function
address alignment of other domains, and cause magic performance
diff --git a/lib/Kconfig.ubsan b/lib/Kconfig.ubsan
index e5372a13511d..236c5cefc4cc 100644
--- a/lib/Kconfig.ubsan
+++ b/lib/Kconfig.ubsan
@@ -112,19 +112,6 @@ config UBSAN_UNREACHABLE
This option enables -fsanitize=unreachable which checks for control
flow reaching an expected-to-be-unreachable position.
-config UBSAN_OBJECT_SIZE
- bool "Perform checking for accesses beyond the end of objects"
- default UBSAN
- # gcc hugely expands stack usage with -fsanitize=object-size
- # https://lore.kernel.org/lkml/CAHk-=wjPasyJrDuwDnpHJS2TuQfExwe=px-SzLeN8GFMAQJPmQ@mail.gmail.com/
- depends on !CC_IS_GCC
- depends on $(cc-option,-fsanitize=object-size)
- help
- This option enables -fsanitize=object-size which checks for accesses
- beyond the end of objects where the optimizer can determine both the
- object being operated on and its size, usually seen with bad downcasts,
- or access to struct members from NULL pointers.
-
config UBSAN_BOOL
bool "Perform checking for non-boolean values used as boolean"
default UBSAN
diff --git a/lib/kunit/try-catch.c b/lib/kunit/try-catch.c
index 0dd434e40487..71e5c5853099 100644
--- a/lib/kunit/try-catch.c
+++ b/lib/kunit/try-catch.c
@@ -52,7 +52,7 @@ static unsigned long kunit_test_timeout(void)
* If tests timeout due to exceeding sysctl_hung_task_timeout_secs,
* the task will be killed and an oops generated.
*/
- return 300 * MSEC_PER_SEC; /* 5 min */
+ return 300 * msecs_to_jiffies(MSEC_PER_SEC); /* 5 min */
}
void kunit_try_catch_run(struct kunit_try_catch *try_catch, void *context)
diff --git a/lib/logic_iomem.c b/lib/logic_iomem.c
index 549b22d4bcde..e7ea9b28d8db 100644
--- a/lib/logic_iomem.c
+++ b/lib/logic_iomem.c
@@ -68,7 +68,7 @@ int logic_iomem_add_region(struct resource *resource,
}
EXPORT_SYMBOL(logic_iomem_add_region);
-#ifndef CONFIG_LOGIC_IOMEM_FALLBACK
+#ifndef CONFIG_INDIRECT_IOMEM_FALLBACK
static void __iomem *real_ioremap(phys_addr_t offset, size_t size)
{
WARN(1, "invalid ioremap(0x%llx, 0x%zx)\n",
@@ -81,7 +81,7 @@ static void real_iounmap(void __iomem *addr)
WARN(1, "invalid iounmap for addr 0x%llx\n",
(unsigned long long)(uintptr_t __force)addr);
}
-#endif /* CONFIG_LOGIC_IOMEM_FALLBACK */
+#endif /* CONFIG_INDIRECT_IOMEM_FALLBACK */
void __iomem *ioremap(phys_addr_t offset, size_t size)
{
@@ -168,7 +168,7 @@ void iounmap(void __iomem *addr)
}
EXPORT_SYMBOL(iounmap);
-#ifndef CONFIG_LOGIC_IOMEM_FALLBACK
+#ifndef CONFIG_INDIRECT_IOMEM_FALLBACK
#define MAKE_FALLBACK(op, sz) \
static u##sz real_raw_read ## op(const volatile void __iomem *addr) \
{ \
@@ -213,7 +213,7 @@ static void real_memcpy_toio(volatile void __iomem *addr, const void *buffer,
WARN(1, "Invalid memcpy_toio at address 0x%llx\n",
(unsigned long long)(uintptr_t __force)addr);
}
-#endif /* CONFIG_LOGIC_IOMEM_FALLBACK */
+#endif /* CONFIG_INDIRECT_IOMEM_FALLBACK */
#define MAKE_OP(op, sz) \
u##sz __raw_read ## op(const volatile void __iomem *addr) \
diff --git a/lib/lz4/lz4_decompress.c b/lib/lz4/lz4_decompress.c
index 926f4823d5ea..fd1728d94bab 100644
--- a/lib/lz4/lz4_decompress.c
+++ b/lib/lz4/lz4_decompress.c
@@ -271,8 +271,12 @@ static FORCE_INLINE int LZ4_decompress_generic(
ip += length;
op += length;
- /* Necessarily EOF, due to parsing restrictions */
- if (!partialDecoding || (cpy == oend))
+ /* Necessarily EOF when !partialDecoding.
+ * When partialDecoding, it is EOF if we've either
+ * filled the output buffer or
+ * can't proceed with reading an offset for following match.
+ */
+ if (!partialDecoding || (cpy == oend) || (ip >= (iend - 2)))
break;
} else {
/* may overwrite up to WILDCOPYLENGTH beyond cpy */
diff --git a/lib/raid6/test/Makefile b/lib/raid6/test/Makefile
index a4c7cd74cff5..4fb7700a741b 100644
--- a/lib/raid6/test/Makefile
+++ b/lib/raid6/test/Makefile
@@ -4,6 +4,8 @@
# from userspace.
#
+pound := \#
+
CC = gcc
OPTFLAGS = -O2 # Adjust as desired
CFLAGS = -I.. -I ../../../include -g $(OPTFLAGS)
@@ -42,7 +44,7 @@ else ifeq ($(HAS_NEON),yes)
OBJS += neon.o neon1.o neon2.o neon4.o neon8.o recov_neon.o recov_neon_inner.o
CFLAGS += -DCONFIG_KERNEL_MODE_NEON=1
else
- HAS_ALTIVEC := $(shell printf '\#include <altivec.h>\nvector int a;\n' |\
+ HAS_ALTIVEC := $(shell printf '$(pound)include <altivec.h>\nvector int a;\n' |\
gcc -c -x c - >/dev/null && rm ./-.o && echo yes)
ifeq ($(HAS_ALTIVEC),yes)
CFLAGS += -I../../../arch/powerpc/include
diff --git a/lib/raid6/test/test.c b/lib/raid6/test/test.c
index a3cf071941ab..841a55242aba 100644
--- a/lib/raid6/test/test.c
+++ b/lib/raid6/test/test.c
@@ -19,7 +19,6 @@
#define NDISKS 16 /* Including P and Q */
const char raid6_empty_zero_page[PAGE_SIZE] __attribute__((aligned(PAGE_SIZE)));
-struct raid6_calls raid6_call;
char *dataptrs[NDISKS];
char data[NDISKS][PAGE_SIZE] __attribute__((aligned(PAGE_SIZE)));
diff --git a/lib/stackdepot.c b/lib/stackdepot.c
index 0a2e417f83cb..e90f0f19e77f 100644
--- a/lib/stackdepot.c
+++ b/lib/stackdepot.c
@@ -20,7 +20,6 @@
*/
#include <linux/gfp.h>
-#include <linux/interrupt.h>
#include <linux/jhash.h>
#include <linux/kernel.h>
#include <linux/mm.h>
@@ -341,26 +340,3 @@ fast_exit:
return retval;
}
EXPORT_SYMBOL_GPL(stack_depot_save);
-
-static inline int in_irqentry_text(unsigned long ptr)
-{
- return (ptr >= (unsigned long)&__irqentry_text_start &&
- ptr < (unsigned long)&__irqentry_text_end) ||
- (ptr >= (unsigned long)&__softirqentry_text_start &&
- ptr < (unsigned long)&__softirqentry_text_end);
-}
-
-unsigned int filter_irq_stacks(unsigned long *entries,
- unsigned int nr_entries)
-{
- unsigned int i;
-
- for (i = 0; i < nr_entries; i++) {
- if (in_irqentry_text(entries[i])) {
- /* Include the irqentry function into the stack. */
- return i + 1;
- }
- }
- return nr_entries;
-}
-EXPORT_SYMBOL_GPL(filter_irq_stacks);
diff --git a/lib/test_kmod.c b/lib/test_kmod.c
index ce1589391413..cb800b1d0d99 100644
--- a/lib/test_kmod.c
+++ b/lib/test_kmod.c
@@ -1149,6 +1149,7 @@ static struct kmod_test_device *register_test_dev_kmod(void)
if (ret) {
pr_err("could not register misc device: %d\n", ret);
free_test_dev_kmod(test_dev);
+ test_dev = NULL;
goto out;
}
diff --git a/lib/test_lockup.c b/lib/test_lockup.c
index 906b598740a7..c3fd87d6c2dd 100644
--- a/lib/test_lockup.c
+++ b/lib/test_lockup.c
@@ -417,9 +417,14 @@ static bool test_kernel_ptr(unsigned long addr, int size)
return false;
/* should be at least readable kernel address */
- if (access_ok(ptr, 1) ||
- access_ok(ptr + size - 1, 1) ||
- get_kernel_nofault(buf, ptr) ||
+ if (!IS_ENABLED(CONFIG_ALTERNATE_USER_ADDRESS_SPACE) &&
+ (access_ok((void __user *)ptr, 1) ||
+ access_ok((void __user *)ptr + size - 1, 1))) {
+ pr_err("user space ptr invalid in kernel: %#lx\n", addr);
+ return true;
+ }
+
+ if (get_kernel_nofault(buf, ptr) ||
get_kernel_nofault(buf, ptr + size - 1)) {
pr_err("invalid kernel ptr: %#lx\n", addr);
return true;
diff --git a/lib/test_ubsan.c b/lib/test_ubsan.c
index 7e7bbd0f3fd2..2062be1f2e80 100644
--- a/lib/test_ubsan.c
+++ b/lib/test_ubsan.c
@@ -79,15 +79,6 @@ static void test_ubsan_load_invalid_value(void)
eval2 = eval;
}
-static void test_ubsan_null_ptr_deref(void)
-{
- volatile int *ptr = NULL;
- int val;
-
- UBSAN_TEST(CONFIG_UBSAN_OBJECT_SIZE);
- val = *ptr;
-}
-
static void test_ubsan_misaligned_access(void)
{
volatile char arr[5] __aligned(4) = {1, 2, 3, 4, 5};
@@ -98,29 +89,16 @@ static void test_ubsan_misaligned_access(void)
*ptr = val;
}
-static void test_ubsan_object_size_mismatch(void)
-{
- /* "((aligned(8)))" helps this not into be misaligned for ptr-access. */
- volatile int val __aligned(8) = 4;
- volatile long long *ptr, val2;
-
- UBSAN_TEST(CONFIG_UBSAN_OBJECT_SIZE);
- ptr = (long long *)&val;
- val2 = *ptr;
-}
-
static const test_ubsan_fp test_ubsan_array[] = {
test_ubsan_shift_out_of_bounds,
test_ubsan_out_of_bounds,
test_ubsan_load_invalid_value,
test_ubsan_misaligned_access,
- test_ubsan_object_size_mismatch,
};
/* Excluded because they Oops the module. */
static const test_ubsan_fp skip_ubsan_array[] = {
test_ubsan_divrem_overflow,
- test_ubsan_null_ptr_deref,
};
static int __init test_ubsan_init(void)
diff --git a/lib/test_xarray.c b/lib/test_xarray.c
index 8b1c318189ce..e77d4856442c 100644
--- a/lib/test_xarray.c
+++ b/lib/test_xarray.c
@@ -1463,6 +1463,25 @@ unlock:
XA_BUG_ON(xa, !xa_empty(xa));
}
+static noinline void check_create_range_5(struct xarray *xa,
+ unsigned long index, unsigned int order)
+{
+ XA_STATE_ORDER(xas, xa, index, order);
+ unsigned int i;
+
+ xa_store_order(xa, index, order, xa_mk_index(index), GFP_KERNEL);
+
+ for (i = 0; i < order + 10; i++) {
+ do {
+ xas_lock(&xas);
+ xas_create_range(&xas);
+ xas_unlock(&xas);
+ } while (xas_nomem(&xas, GFP_KERNEL));
+ }
+
+ xa_destroy(xa);
+}
+
static noinline void check_create_range(struct xarray *xa)
{
unsigned int order;
@@ -1490,6 +1509,9 @@ static noinline void check_create_range(struct xarray *xa)
check_create_range_4(xa, (3U << order) + 1, order);
check_create_range_4(xa, (3U << order) - 1, order);
check_create_range_4(xa, (1U << 24) + 1, order);
+
+ check_create_range_5(xa, 0, order);
+ check_create_range_5(xa, (1U << order), order);
}
check_create_range_3();
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index d7ad44f2c8f5..a3b73f28b7a9 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -49,12 +49,16 @@
#include <asm/page.h> /* for PAGE_SIZE */
#include <asm/byteorder.h> /* cpu_to_le16 */
+#include <asm/unaligned.h>
#include <linux/string_helpers.h>
#include "kstrtox.h"
-static unsigned long long simple_strntoull(const char *startp, size_t max_chars,
- char **endp, unsigned int base)
+/* Disable pointer hashing if requested */
+bool no_hash_pointers __ro_after_init;
+EXPORT_SYMBOL_GPL(no_hash_pointers);
+
+static noinline unsigned long long simple_strntoull(const char *startp, size_t max_chars, char **endp, unsigned int base)
{
const char *cp;
unsigned long long result = 0ULL;
@@ -848,6 +852,19 @@ static char *ptr_to_id(char *buf, char *end, const void *ptr,
return pointer_string(buf, end, (const void *)hashval, spec);
}
+static char *default_pointer(char *buf, char *end, const void *ptr,
+ struct printf_spec spec)
+{
+ /*
+ * default is to _not_ leak addresses, so hash before printing,
+ * unless no_hash_pointers is specified on the command line.
+ */
+ if (unlikely(no_hash_pointers))
+ return pointer_string(buf, end, ptr, spec);
+
+ return ptr_to_id(buf, end, ptr, spec);
+}
+
int kptr_restrict __read_mostly;
static noinline_for_stack
@@ -857,7 +874,7 @@ char *restricted_pointer(char *buf, char *end, const void *ptr,
switch (kptr_restrict) {
case 0:
/* Handle as %p, hash and do _not_ leak addresses. */
- return ptr_to_id(buf, end, ptr, spec);
+ return default_pointer(buf, end, ptr, spec);
case 1: {
const struct cred *cred;
@@ -1771,7 +1788,7 @@ char *fourcc_string(char *buf, char *end, const u32 *fourcc,
char output[sizeof("0123 little-endian (0x01234567)")];
char *p = output;
unsigned int i;
- u32 val;
+ u32 orig, val;
if (fmt[1] != 'c' || fmt[2] != 'c')
return error_string(buf, end, "(%p4?)", spec);
@@ -1779,21 +1796,22 @@ char *fourcc_string(char *buf, char *end, const u32 *fourcc,
if (check_pointer(&buf, end, fourcc, spec))
return buf;
- val = *fourcc & ~BIT(31);
+ orig = get_unaligned(fourcc);
+ val = orig & ~BIT(31);
- for (i = 0; i < sizeof(*fourcc); i++) {
+ for (i = 0; i < sizeof(u32); i++) {
unsigned char c = val >> (i * 8);
/* Print non-control ASCII characters as-is, dot otherwise */
*p++ = isascii(c) && isprint(c) ? c : '.';
}
- strcpy(p, *fourcc & BIT(31) ? " big-endian" : " little-endian");
+ strcpy(p, orig & BIT(31) ? " big-endian" : " little-endian");
p += strlen(p);
*p++ = ' ';
*p++ = '(';
- p = special_hex_number(p, output + sizeof(output) - 2, *fourcc, sizeof(u32));
+ p = special_hex_number(p, output + sizeof(output) - 2, orig, sizeof(u32));
*p++ = ')';
*p = '\0';
@@ -2225,10 +2243,6 @@ char *fwnode_string(char *buf, char *end, struct fwnode_handle *fwnode,
return widen_string(buf, buf - buf_start, end, spec);
}
-/* Disable pointer hashing if requested */
-bool no_hash_pointers __ro_after_init;
-EXPORT_SYMBOL_GPL(no_hash_pointers);
-
int __init no_hash_pointers_enable(char *str)
{
if (no_hash_pointers)
@@ -2457,7 +2471,7 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
case 'e':
/* %pe with a non-ERR_PTR gets treated as plain %p */
if (!IS_ERR(ptr))
- break;
+ return default_pointer(buf, end, ptr, spec);
return err_ptr(buf, end, ptr, spec);
case 'u':
case 'k':
@@ -2467,16 +2481,9 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
default:
return error_string(buf, end, "(einval)", spec);
}
+ default:
+ return default_pointer(buf, end, ptr, spec);
}
-
- /*
- * default is to _not_ leak addresses, so hash before printing,
- * unless no_hash_pointers is specified on the command line.
- */
- if (unlikely(no_hash_pointers))
- return pointer_string(buf, end, ptr, spec);
- else
- return ptr_to_id(buf, end, ptr, spec);
}
/*
diff --git a/lib/xarray.c b/lib/xarray.c
index f5d8f54907b4..96e2d7748e5a 100644
--- a/lib/xarray.c
+++ b/lib/xarray.c
@@ -722,6 +722,8 @@ void xas_create_range(struct xa_state *xas)
for (;;) {
struct xa_node *node = xas->xa_node;
+ if (node->shift >= shift)
+ break;
xas->xa_node = xa_parent_locked(xas->xa, node);
xas->xa_offset = node->offset - 1;
if (node->offset != 0)
@@ -1079,6 +1081,7 @@ void xas_split(struct xa_state *xas, void *entry, unsigned int order)
xa_mk_node(child));
if (xa_is_value(curr))
values--;
+ xas_update(xas, child);
} else {
unsigned int canon = offset - xas->xa_sibs;
@@ -1093,6 +1096,7 @@ void xas_split(struct xa_state *xas, void *entry, unsigned int order)
} while (offset-- > xas->xa_offset);
node->nr_values += values;
+ xas_update(xas, node);
}
EXPORT_SYMBOL_GPL(xas_split);
#endif
generated by cgit v1.2.3 (git 2.39.0) at 2025-08-13 13:30:05 +0300