Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from Andrew Morton:
 "14 patches.

  Subsystems affected by this patch series: MAINTAINERS, binfmt, and
  mm (tmpfs, secretmem, kasan, kfence, pagealloc, zram, compaction,
  hugetlb, vmalloc, and kmemleak)"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm: kmemleak: take a full lowmem check in kmemleak_*_phys()
  mm/vmalloc: fix spinning drain_vmap_work after reading from /proc/vmcore
  revert "fs/binfmt_elf: use PT_LOAD p_align values for static PIE"
  revert "fs/binfmt_elf: fix PT_LOAD p_align values for loaders"
  hugetlb: do not demote poisoned hugetlb pages
  mm: compaction: fix compiler warning when CONFIG_COMPACTION=n
  mm: fix unexpected zeroed page mapping with zram swap
  mm, page_alloc: fix build_zonerefs_node()
  mm, kfence: support kmem_dump_obj() for KFENCE objects
  kasan: fix hw tags enablement when KUNIT tests are disabled
  irq_work: use kasan_record_aux_stack_noalloc() record callstack
  mm/secretmem: fix panic when growing a memfd_secret
  tmpfs: fix regressions from wider use of ZERO_PAGE
  MAINTAINERS: Broadcom internal lists aren't maintainers

MAINTAINERS

@@ -3743,7 +3743,7 @@ F:	include/linux/platform_data/b53.h
 
 BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE
 M:	Nicolas Saenz Julienne <nsaenz@kernel.org>
-L:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-rpi-kernel@lists.infradead.org (moderated for non-subscribers)
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
@@ -3758,7 +3758,7 @@ BROADCOM BCM281XX/BCM11XXX/BCM216XX ARM ARCHITECTURE
 M:	Florian Fainelli <f.fainelli@gmail.com>
 M:	Ray Jui <rjui@broadcom.com>
 M:	Scott Branden <sbranden@broadcom.com>
-M:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 S:	Maintained
 T:	git git://github.com/broadcom/mach-bcm
 F:	arch/arm/mach-bcm/
@@ -3778,7 +3778,7 @@ F:	arch/mips/include/asm/mach-bcm47xx/*
 
 BROADCOM BCM4908 ETHERNET DRIVER
 M:	Rafał Miłecki <rafal@milecki.pl>
-M:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	netdev@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/net/brcm,bcm4908-enet.yaml
@@ -3787,7 +3787,7 @@ F:	drivers/net/ethernet/broadcom/unimac.h
 
 BROADCOM BCM4908 PINMUX DRIVER
 M:	Rafał Miłecki <rafal@milecki.pl>
-M:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-gpio@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/pinctrl/brcm,bcm4908-pinctrl.yaml
@@ -3797,7 +3797,7 @@ BROADCOM BCM5301X ARM ARCHITECTURE
 M:	Florian Fainelli <f.fainelli@gmail.com>
 M:	Hauke Mehrtens <hauke@hauke-m.de>
 M:	Rafał Miłecki <zajec5@gmail.com>
-M:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 F:	arch/arm/boot/dts/bcm470*
@@ -3808,15 +3808,15 @@ F:	arch/arm/mach-bcm/bcm_5301x.c
 BROADCOM BCM53573 ARM ARCHITECTURE
 M:	Florian Fainelli <f.fainelli@gmail.com>
 M:	Rafał Miłecki <rafal@milecki.pl>
-L:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 F:	arch/arm/boot/dts/bcm47189*
 F:	arch/arm/boot/dts/bcm53573*
 
 BROADCOM BCM63XX ARM ARCHITECTURE
 M:	Florian Fainelli <f.fainelli@gmail.com>
-M:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 T:	git git://github.com/broadcom/stblinux.git
@@ -3830,7 +3830,7 @@ F:	drivers/usb/gadget/udc/bcm63xx_udc.*
 
 BROADCOM BCM7XXX ARM ARCHITECTURE
 M:	Florian Fainelli <f.fainelli@gmail.com>
-M:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 T:	git git://github.com/broadcom/stblinux.git
@@ -3848,21 +3848,21 @@ N:	bcm7120
 BROADCOM BDC DRIVER
 M:	Al Cooper <alcooperx@gmail.com>
 L:	linux-usb@vger.kernel.org
-L:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 S:	Maintained
 F:	Documentation/devicetree/bindings/usb/brcm,bdc.yaml
 F:	drivers/usb/gadget/udc/bdc/
 
 BROADCOM BMIPS CPUFREQ DRIVER
 M:	Markus Mayer <mmayer@broadcom.com>
-M:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-pm@vger.kernel.org
 S:	Maintained
 F:	drivers/cpufreq/bmips-cpufreq.c
 
 BROADCOM BMIPS MIPS ARCHITECTURE
 M:	Florian Fainelli <f.fainelli@gmail.com>
-L:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-mips@vger.kernel.org
 S:	Maintained
 T:	git git://github.com/broadcom/stblinux.git
@@ -3928,53 +3928,53 @@ F:	drivers/net/wireless/broadcom/brcm80211/
 BROADCOM BRCMSTB GPIO DRIVER
 M:	Doug Berger <opendmb@gmail.com>
 M:	Florian Fainelli <f.fainelli@gmail.com>
-L:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 S:	Supported
 F:	Documentation/devicetree/bindings/gpio/brcm,brcmstb-gpio.yaml
 F:	drivers/gpio/gpio-brcmstb.c
 
 BROADCOM BRCMSTB I2C DRIVER
 M:	Kamal Dasu <kdasu.kdev@gmail.com>
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-i2c@vger.kernel.org
-L:	bcm-kernel-feedback-list@broadcom.com
 S:	Supported
 F:	Documentation/devicetree/bindings/i2c/brcm,brcmstb-i2c.yaml
 F:	drivers/i2c/busses/i2c-brcmstb.c
 
 BROADCOM BRCMSTB UART DRIVER
 M:	Al Cooper <alcooperx@gmail.com>
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-serial@vger.kernel.org
-L:	bcm-kernel-feedback-list@broadcom.com
 S:	Maintained
 F:	Documentation/devicetree/bindings/serial/brcm,bcm7271-uart.yaml
 F:	drivers/tty/serial/8250/8250_bcm7271.c
 
 BROADCOM BRCMSTB USB EHCI DRIVER
 M:	Al Cooper <alcooperx@gmail.com>
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-usb@vger.kernel.org
-L:	bcm-kernel-feedback-list@broadcom.com
 S:	Maintained
 F:	Documentation/devicetree/bindings/usb/brcm,bcm7445-ehci.yaml
 F:	drivers/usb/host/ehci-brcm.*
 
 BROADCOM BRCMSTB USB PIN MAP DRIVER
 M:	Al Cooper <alcooperx@gmail.com>
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-usb@vger.kernel.org
-L:	bcm-kernel-feedback-list@broadcom.com
 S:	Maintained
 F:	Documentation/devicetree/bindings/usb/brcm,usb-pinmap.yaml
 F:	drivers/usb/misc/brcmstb-usb-pinmap.c
 
 BROADCOM BRCMSTB USB2 and USB3 PHY DRIVER
 M:	Al Cooper <alcooperx@gmail.com>
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-kernel@vger.kernel.org
-L:	bcm-kernel-feedback-list@broadcom.com
 S:	Maintained
 F:	drivers/phy/broadcom/phy-brcm-usb*
 
 BROADCOM ETHERNET PHY DRIVERS
 M:	Florian Fainelli <f.fainelli@gmail.com>
-L:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	netdev@vger.kernel.org
 S:	Supported
 F:	Documentation/devicetree/bindings/net/broadcom-bcm87xx.txt
@@ -3985,7 +3985,7 @@ F:	include/linux/brcmphy.h
 BROADCOM GENET ETHERNET DRIVER
 M:	Doug Berger <opendmb@gmail.com>
 M:	Florian Fainelli <f.fainelli@gmail.com>
-L:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	netdev@vger.kernel.org
 S:	Supported
 F:	Documentation/devicetree/bindings/net/brcm,bcmgenet.yaml
@@ -3999,7 +3999,7 @@ F:	include/linux/platform_data/mdio-bcm-unimac.h
 BROADCOM IPROC ARM ARCHITECTURE
 M:	Ray Jui <rjui@broadcom.com>
 M:	Scott Branden <sbranden@broadcom.com>
-M:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 T:	git git://github.com/broadcom/stblinux.git
@@ -4027,7 +4027,7 @@ N:	stingray
 
 BROADCOM IPROC GBIT ETHERNET DRIVER
 M:	Rafał Miłecki <rafal@milecki.pl>
-M:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	netdev@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/net/brcm,amac.yaml
@@ -4036,7 +4036,7 @@ F:	drivers/net/ethernet/broadcom/unimac.h
 
 BROADCOM KONA GPIO DRIVER
 M:	Ray Jui <rjui@broadcom.com>
-L:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 S:	Supported
 F:	Documentation/devicetree/bindings/gpio/brcm,kona-gpio.txt
 F:	drivers/gpio/gpio-bcm-kona.c
@@ -4069,7 +4069,7 @@ F:	drivers/firmware/broadcom/*
 BROADCOM PMB (POWER MANAGEMENT BUS) DRIVER
 M:	Rafał Miłecki <rafal@milecki.pl>
 M:	Florian Fainelli <f.fainelli@gmail.com>
-M:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-pm@vger.kernel.org
 S:	Maintained
 T:	git git://github.com/broadcom/stblinux.git
@@ -4085,7 +4085,7 @@ F:	include/linux/bcma/
 
 BROADCOM SPI DRIVER
 M:	Kamal Dasu <kdasu.kdev@gmail.com>
-M:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 S:	Maintained
 F:	Documentation/devicetree/bindings/spi/brcm,spi-bcm-qspi.yaml
 F:	drivers/spi/spi-bcm-qspi.*
@@ -4094,23 +4094,23 @@ F:	drivers/spi/spi-iproc-qspi.c
 
 BROADCOM STB AVS CPUFREQ DRIVER
 M:	Markus Mayer <mmayer@broadcom.com>
-M:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-pm@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/cpufreq/brcm,stb-avs-cpu-freq.txt
 F:	drivers/cpufreq/brcmstb*
 
 BROADCOM STB AVS TMON DRIVER
 M:	Markus Mayer <mmayer@broadcom.com>
-M:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-pm@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/thermal/brcm,avs-tmon.yaml
 F:	drivers/thermal/broadcom/brcmstb*
 
 BROADCOM STB DPFE DRIVER
 M:	Markus Mayer <mmayer@broadcom.com>
-M:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 F:	Documentation/devicetree/bindings/memory-controllers/brcm,dpfe-cpu.yaml
@@ -4119,8 +4119,8 @@ F:	drivers/memory/brcmstb_dpfe.c
 BROADCOM STB NAND FLASH DRIVER
 M:	Brian Norris <computersforpeace@gmail.com>
 M:	Kamal Dasu <kdasu.kdev@gmail.com>
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-mtd@lists.infradead.org
-L:	bcm-kernel-feedback-list@broadcom.com
 S:	Maintained
 F:	drivers/mtd/nand/raw/brcmnand/
 F:	include/linux/platform_data/brcmnand.h
@@ -4129,15 +4129,15 @@ BROADCOM STB PCIE DRIVER
 M:	Jim Quinlan <jim2101024@gmail.com>
 M:	Nicolas Saenz Julienne <nsaenz@kernel.org>
 M:	Florian Fainelli <f.fainelli@gmail.com>
-M:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-pci@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
 F:	drivers/pci/controller/pcie-brcmstb.c
 
 BROADCOM SYSTEMPORT ETHERNET DRIVER
 M:	Florian Fainelli <f.fainelli@gmail.com>
-L:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	netdev@vger.kernel.org
 S:	Supported
 F:	drivers/net/ethernet/broadcom/bcmsysport.*
@@ -4154,7 +4154,7 @@ F:	drivers/net/ethernet/broadcom/tg3.*
 
 BROADCOM VK DRIVER
 M:	Scott Branden <scott.branden@broadcom.com>
-L:	bcm-kernel-feedback-list@broadcom.com
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 S:	Supported
 F:	drivers/misc/bcm-vk/
 F:	include/uapi/linux/misc/bcm_vk.h
@@ -17648,8 +17648,8 @@ K:	\bTIF_SECCOMP\b
 
 SECURE DIGITAL HOST CONTROLLER INTERFACE (SDHCI) Broadcom BRCMSTB DRIVER
 M:	Al Cooper <alcooperx@gmail.com>
+R:	Broadcom Kernel Team <bcm-kernel-feedback-list@broadcom.com>
 L:	linux-mmc@vger.kernel.org
-L:	bcm-kernel-feedback-list@broadcom.com
 S:	Maintained
 F:	drivers/mmc/host/sdhci-brcmstb*
 

arch/x86/include/asm/io.h

@@ -210,8 +210,6 @@ void __iomem *ioremap(resource_size_t offset, unsigned long size);
 extern void iounmap(volatile void __iomem *addr);
 #define iounmap iounmap
 
-extern void set_iounmap_nonlazy(void);
-
 #ifdef __KERNEL__
 
 void memcpy_fromio(void *, const volatile void __iomem *, size_t);

arch/x86/kernel/crash_dump_64.c

@@ -37,7 +37,6 @@ static ssize_t __copy_oldmem_page(unsigned long pfn, char *buf, size_t csize,
 	} else
 		memcpy(buf, vaddr + offset, csize);
 
-	set_iounmap_nonlazy();
 	iounmap((void __iomem *)vaddr);
 	return csize;
 }

fs/binfmt_elf.c

@@ -1117,11 +1117,11 @@ static int load_elf_binary(struct linux_binprm *bprm)
 			 * independently randomized mmap region (0 load_bias
 			 * without MAP_FIXED nor MAP_FIXED_NOREPLACE).
 			 */
-			alignment = maximum_alignment(elf_phdata, elf_ex->e_phnum);
-			if (interpreter || alignment > ELF_MIN_ALIGN) {
+			if (interpreter) {
 				load_bias = ELF_ET_DYN_BASE;
 				if (current->flags & PF_RANDOMIZE)
 					load_bias += arch_mmap_rnd();
+				alignment = maximum_alignment(elf_phdata, elf_ex->e_phnum);
 				if (alignment)
 					load_bias &= ~(alignment - 1);
 				elf_flags |= MAP_FIXED_NOREPLACE;

include/linux/kfence.h

@@ -204,6 +204,22 @@ static __always_inline __must_check bool kfence_free(void *addr)
  */
 bool __must_check kfence_handle_page_fault(unsigned long addr, bool is_write, struct pt_regs *regs);
 
+#ifdef CONFIG_PRINTK
+struct kmem_obj_info;
+/**
+ * __kfence_obj_info() - fill kmem_obj_info struct
+ * @kpp: kmem_obj_info to be filled
+ * @object: the object
+ *
+ * Return:
+ * * false - not a KFENCE object
+ * * true - a KFENCE object, filled @kpp
+ *
+ * Copies information to @kpp for KFENCE objects.
+ */
+bool __kfence_obj_info(struct kmem_obj_info *kpp, void *object, struct slab *slab);
+#endif
+
 #else /* CONFIG_KFENCE */
 
 static inline bool is_kfence_address(const void *addr) { return false; }
@@ -221,6 +237,14 @@ static inline bool __must_check kfence_handle_page_fault(unsigned long addr, boo
 	return false;
 }
 
+#ifdef CONFIG_PRINTK
+struct kmem_obj_info;
+static inline bool __kfence_obj_info(struct kmem_obj_info *kpp, void *object, struct slab *slab)
+{
+	return false;
+}
+#endif
+
 #endif
 
 #endif /* _LINUX_KFENCE_H */

kernel/irq_work.c

@@ -137,7 +137,7 @@ bool irq_work_queue_on(struct irq_work *work, int cpu)
 	if (!irq_work_claim(work))
 		return false;
 
-	kasan_record_aux_stack(work);
+	kasan_record_aux_stack_noalloc(work);
 
 	preempt_disable();
 	if (cpu != smp_processor_id()) {

mm/compaction.c

@@ -26,6 +26,11 @@
 #include "internal.h"
 
 #ifdef CONFIG_COMPACTION
+/*
+ * Fragmentation score check interval for proactive compaction purposes.
+ */
+#define HPAGE_FRAG_CHECK_INTERVAL_MSEC	(500)
+
 static inline void count_compact_event(enum vm_event_item item)
 {
 	count_vm_event(item);
@@ -50,11 +55,6 @@ static inline void count_compact_events(enum vm_event_item item, long delta)
 #define pageblock_start_pfn(pfn)	block_start_pfn(pfn, pageblock_order)
 #define pageblock_end_pfn(pfn)		block_end_pfn(pfn, pageblock_order)
 
-/*
- * Fragmentation score check interval for proactive compaction purposes.
- */
-static const unsigned int HPAGE_FRAG_CHECK_INTERVAL_MSEC = 500;
-
 /*
  * Page order with-respect-to which proactive compaction
  * calculates external fragmentation, which is used as