Merge branch 'akpm/master'

11 files changed, 93 insertions, 13 deletions

diff --git a/Documentation/dev-tools/kmemleak.rst b/Documentation/dev-tools/kmemleak.rst
index 1788722d5495..b2391b829169 100644
--- a/Documentation/dev-tools/kmemleak.rst
+++ b/Documentation/dev-tools/kmemleak.rst
@@ -162,6 +162,15 @@ See the include/linux/kmemleak.h header for the functions prototype.
 - ``kmemleak_alloc_recursive`` - as kmemleak_alloc but checks the recursiveness
 - ``kmemleak_free_recursive``	 - as kmemleak_free but checks the recursiveness
 
+The following functions take a physical address as the object pointer
+and only perform the corresponding action if the address has a lowmem
+mapping:
+
+- ``kmemleak_alloc_phys``
+- ``kmemleak_free_part_phys``
+- ``kmemleak_not_leak_phys``
+- ``kmemleak_ignore_phys``
+
 Dealing with false positives/negatives
 --------------------------------------
 
diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c
index fc3389fc47a2..b1f15a2dab65 100644
--- a/arch/x86/kernel/machine_kexec_64.c
+++ b/arch/x86/kernel/machine_kexec_64.c
@@ -338,6 +338,9 @@ void arch_crash_save_vmcoreinfo(void)
 	vmcoreinfo_append_str("KERNELOFFSET=%lx\n",
 			      kaslr_offset());
 	VMCOREINFO_PHYS_BASE(phys_base);
+	VMCOREINFO_PAGE_OFFSET(PAGE_OFFSET);
+	VMCOREINFO_VMALLOC_START(VMALLOC_START);
+	VMCOREINFO_VMEMMAP_START(VMEMMAP_START);
 }
 
 /* arch-dependent functionality related to kexec file-based syscall */
diff --git a/drivers/net/wireless/intel/iwlwifi/dvm/calib.c b/drivers/net/wireless/intel/iwlwifi/dvm/calib.c
index e9cef9de9ed8..c96f9b1d948a 100644
--- a/drivers/net/wireless/intel/iwlwifi/dvm/calib.c
+++ b/drivers/net/wireless/intel/iwlwifi/dvm/calib.c
@@ -900,8 +900,7 @@ static void iwlagn_gain_computation(struct iwl_priv *priv,
 
 		/* bound gain by 2 bits value max, 3rd bit is sign */
 		data->delta_gain_code[i] =
-			min(abs(delta_g),
-			(s32) CHAIN_NOISE_MAX_DELTA_GAIN_CODE);
+			min(abs(delta_g), CHAIN_NOISE_MAX_DELTA_GAIN_CODE);
 
 		if (delta_g < 0)
 			/*
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index d3ae4292931b..cd3874c21b3c 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -261,6 +261,12 @@ phys_addr_t paddr_vmcoreinfo_note(void);
 	vmcoreinfo_append_str("CONFIG_%s=y\n", #name)
 #define VMCOREINFO_PHYS_BASE(value) \
 	vmcoreinfo_append_str("PHYS_BASE=%lx\n", (unsigned long)value)
+#define VMCOREINFO_PAGE_OFFSET(value) \
+	vmcoreinfo_append_str("PAGE_OFFSET=%lx\n", (unsigned long)value)
+#define VMCOREINFO_VMALLOC_START(value) \
+	vmcoreinfo_append_str("VMALLOC_START=%lx\n", (unsigned long)value)
+#define VMCOREINFO_VMEMMAP_START(value) \
+	vmcoreinfo_append_str("VMEMMAP_START=%lx\n", (unsigned long)value)
 
 extern struct kimage *kexec_image;
 extern struct kimage *kexec_crash_image;
diff --git a/include/linux/kmemleak.h b/include/linux/kmemleak.h
index 4894c6888bc6..1c2a32829620 100644
--- a/include/linux/kmemleak.h
+++ b/include/linux/kmemleak.h
@@ -38,6 +38,11 @@ extern void kmemleak_not_leak(const void *ptr) __ref;
 extern void kmemleak_ignore(const void *ptr) __ref;
 extern void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp) __ref;
 extern void kmemleak_no_scan(const void *ptr) __ref;
+extern void kmemleak_alloc_phys(phys_addr_t phys, size_t size, int min_count,
+				gfp_t gfp) __ref;
+extern void kmemleak_free_part_phys(phys_addr_t phys, size_t size) __ref;
+extern void kmemleak_not_leak_phys(phys_addr_t phys) __ref;
+extern void kmemleak_ignore_phys(phys_addr_t phys) __ref;
 
 static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
 					    int min_count, unsigned long flags,
@@ -106,6 +111,19 @@ static inline void kmemleak_erase(void **ptr)
 static inline void kmemleak_no_scan(const void *ptr)
 {
 }
+static inline void kmemleak_alloc_phys(phys_addr_t phys, size_t size,
+				       int min_count, gfp_t gfp)
+{
+}
+static inline void kmemleak_free_part_phys(phys_addr_t phys, size_t size)
+{
+}
+static inline void kmemleak_not_leak_phys(phys_addr_t phys)
+{
+}
+static inline void kmemleak_ignore_phys(phys_addr_t phys)
+{
+}
 
 #endif	/* CONFIG_DEBUG_KMEMLEAK */
 
diff --git a/include/linux/mlx5/device.h b/include/linux/mlx5/device.h
index 77c141797152..37a130eff270 100644
--- a/include/linux/mlx5/device.h
+++ b/include/linux/mlx5/device.h
@@ -93,8 +93,6 @@ __mlx5_mask(typ, fld))
 })
 
 #define MLX5_SET64(typ, p, fld, v) do { \
-	BUILD_BUG_ON(__mlx5_bit_sz(typ, fld) != 64); \
-	BUILD_BUG_ON(__mlx5_bit_off(typ, fld) % 64); \
 	*((__be64 *)(p) + __mlx5_64_off(typ, fld)) = cpu_to_be64(v); \
 } while (0)
 
diff --git a/mm/bootmem.c b/mm/bootmem.c
index 0aa7dda52402..80f1d70bad2d 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -158,7 +158,7 @@ void __init free_bootmem_late(unsigned long physaddr, unsigned long size)
 {
 	unsigned long cursor, end;
 
-	kmemleak_free_part(__va(physaddr), size);
+	kmemleak_free_part_phys(physaddr, size);
 
 	cursor = PFN_UP(physaddr);
 	end = PFN_DOWN(physaddr + size);
@@ -402,7 +402,7 @@ void __init free_bootmem_node(pg_data_t *pgdat, unsigned long physaddr,
 {
 	unsigned long start, end;
 
-	kmemleak_free_part(__va(physaddr), size);
+	kmemleak_free_part_phys(physaddr, size);
 
 	start = PFN_UP(physaddr);
 	end = PFN_DOWN(physaddr + size);
@@ -423,7 +423,7 @@ void __init free_bootmem(unsigned long physaddr, unsigned long size)
 {
 	unsigned long start, end;
 
-	kmemleak_free_part(__va(physaddr), size);
+	kmemleak_free_part_phys(physaddr, size);
 
 	start = PFN_UP(physaddr);
 	end = PFN_DOWN(physaddr + size);
diff --git a/mm/cma.c b/mm/cma.c
index bd0e1412475e..384c2cb51b56 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -336,7 +336,7 @@ int __init cma_declare_contiguous(phys_addr_t base,
 		 * kmemleak scans/reads tracked objects for pointers to other
 		 * objects but this address isn't mapped and accessible
 		 */
-		kmemleak_ignore(phys_to_virt(addr));
+		kmemleak_ignore_phys(addr);
 		base = addr;
 	}
 
diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index 086292f7c59d..a5e453cf05c4 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -90,6 +90,8 @@
 #include <linux/cache.h>
 #include <linux/percpu.h>
 #include <linux/hardirq.h>
+#include <linux/bootmem.h>
+#include <linux/pfn.h>
 #include <linux/mmzone.h>
 #include <linux/slab.h>
 #include <linux/thread_info.h>
@@ -1121,6 +1123,51 @@ void __ref kmemleak_no_scan(const void *ptr)
 }
 EXPORT_SYMBOL(kmemleak_no_scan);
 
+/**
+ * kmemleak_alloc_phys - similar to kmemleak_alloc but taking a physical
+ *			 address argument
+ */
+void __ref kmemleak_alloc_phys(phys_addr_t phys, size_t size, int min_count,
+			       gfp_t gfp)
+{
+	if (!IS_ENABLED(CONFIG_HIGHMEM) || PHYS_PFN(phys) < max_low_pfn)
+		kmemleak_alloc(__va(phys), size, min_count, gfp);
+}
+EXPORT_SYMBOL(kmemleak_alloc_phys);
+
+/**
+ * kmemleak_free_part_phys - similar to kmemleak_free_part but taking a
+ *			     physical address argument
+ */
+void __ref kmemleak_free_part_phys(phys_addr_t phys, size_t size)
+{
+	if (!IS_ENABLED(CONFIG_HIGHMEM) || PHYS_PFN(phys) < max_low_pfn)
+		kmemleak_free_part(__va(phys), size);
+}
+EXPORT_SYMBOL(kmemleak_free_part_phys);
+
+/**
+ * kmemleak_not_leak_phys - similar to kmemleak_not_leak but taking a physical
+ *			    address argument
+ */
+void __ref kmemleak_not_leak_phys(phys_addr_t phys)
+{
+	if (!IS_ENABLED(CONFIG_HIGHMEM) || PHYS_PFN(phys) < max_low_pfn)
+		kmemleak_not_leak(__va(phys));
+}
+EXPORT_SYMBOL(kmemleak_not_leak_phys);
+
+/**
+ * kmemleak_ignore_phys - similar to kmemleak_ignore but taking a physical
+ *			  address argument
+ */
+void __ref kmemleak_ignore_phys(phys_addr_t phys)
+{
+	if (!IS_ENABLED(CONFIG_HIGHMEM) || PHYS_PFN(phys) < max_low_pfn)
+		kmemleak_ignore(__va(phys));
+}
+EXPORT_SYMBOL(kmemleak_ignore_phys);
+
 /*
  * Update an object's checksum and return true if it was modified.
  */
diff --git a/mm/memblock.c b/mm/memblock.c
index 483197ef613f..30ecea7b45d1 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -723,7 +723,7 @@ int __init_memblock memblock_free(phys_addr_t base, phys_addr_t size)
 		     (unsigned long long)base + size - 1,
 		     (void *)_RET_IP_);
 
-	kmemleak_free_part(__va(base), size);
+	kmemleak_free_part_phys(base, size);
 	return memblock_remove_range(&memblock.reserved, base, size);
 }
 
@@ -1152,7 +1152,7 @@ static phys_addr_t __init memblock_alloc_range_nid(phys_addr_t size,
 		 * The min_count is set to 0 so that memblock allocations are
 		 * never reported as leaks.
 		 */
-		kmemleak_alloc(__va(found), size, 0, 0);
+		kmemleak_alloc_phys(found, size, 0, 0);
 		return found;
 	}
 	return 0;
@@ -1399,7 +1399,7 @@ void __init __memblock_free_early(phys_addr_t base, phys_addr_t size)
 	memblock_dbg("%s: [%#016llx-%#016llx] %pF\n",
 		     __func__, (u64)base, (u64)base + size - 1,
 		     (void *)_RET_IP_);
-	kmemleak_free_part(__va(base), size);
+	kmemleak_free_part_phys(base, size);
 	memblock_remove_range(&memblock.reserved, base, size);
 }
 
@@ -1419,7 +1419,7 @@ void __init __memblock_free_late(phys_addr_t base, phys_addr_t size)
 	memblock_dbg("%s: [%#016llx-%#016llx] %pF\n",
 		     __func__, (u64)base, (u64)base + size - 1,
 		     (void *)_RET_IP_);
-	kmemleak_free_part(__va(base), size);
+	kmemleak_free_part_phys(base, size);
 	cursor = PFN_UP(base);
 	end = PFN_DOWN(base + size);
 
diff --git a/mm/nobootmem.c b/mm/nobootmem.c
index bd05a70f44b9..a056d31dff7e 100644
--- a/mm/nobootmem.c
+++ b/mm/nobootmem.c
@@ -81,7 +81,7 @@ void __init free_bootmem_late(unsigned long addr, unsigned long size)
 {
 	unsigned long cursor, end;
 
-	kmemleak_free_part(__va(addr), size);
+	kmemleak_free_part_phys(addr, size);
 
 	cursor = PFN_UP(addr);
 	end = PFN_DOWN(addr + size);