diff --git a/.mailmap b/.mailmap
index a780211468e4e4a7a79c9fb39135e92d2ae168a7..0894a8b4ba7d3dd6cd5e221a0dce78b1bb58ad16 100644
--- a/.mailmap
+++ b/.mailmap
@@ -41,7 +41,8 @@ Andrew Murray <amurray@thegoodpenguin.co.uk> <andrew.murray@arm.com>
Andrew Vasquez <andrew.vasquez@qlogic.com>
Andrey Ryabinin <ryabinin.a.a@gmail.com> <a.ryabinin@samsung.com>
Andy Adamson <andros@citi.umich.edu>
-Antoine Tenart <antoine.tenart@free-electrons.com>
+Antoine Tenart <atenart@kernel.org> <antoine.tenart@bootlin.com>
+Antoine Tenart <atenart@kernel.org> <antoine.tenart@free-electrons.com>
Antonio Ospite <ao2@ao2.it> <ao2@amarulasolutions.com>
Archit Taneja <archit@ti.com>
Ard Biesheuvel <ardb@kernel.org> <ard.biesheuvel@linaro.org>
@@ -188,6 +189,7 @@ Leon Romanovsky <leon@kernel.org> <leonro@nvidia.com>
Linas Vepstas <linas@austin.ibm.com>
Linus Lüssing <linus.luessing@c0d3.blue> <linus.luessing@ascom.ch>
Linus Lüssing <linus.luessing@c0d3.blue> <linus.luessing@web.de>
+<linux-hardening@vger.kernel.org> <kernel-hardening@lists.openwall.com>
Li Yang <leoyang.li@nxp.com> <leoli@freescale.com>
Li Yang <leoyang.li@nxp.com> <leo@zh-kernel.org>
Lukasz Luba <lukasz.luba@arm.com> <l.luba@partner.samsung.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index e83aee101b66c7449fe58e2c67872a313dac2760..867157311dc8b59f6c140fb91ffd1b53bbe42e86 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1628,7 +1628,7 @@ N: meson
ARM/Annapurna Labs ALPINE ARCHITECTURE
M: Tsahee Zidenberg <tsahee@annapurnalabs.com>
-M: Antoine Tenart <antoine.tenart@bootlin.com>
+M: Antoine Tenart <atenart@kernel.org>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
F: arch/arm/boot/dts/alpine*
@@ -7240,7 +7240,7 @@ F: drivers/staging/gasket/
GCC PLUGINS
M: Kees Cook <keescook@chromium.org>
R: Emese Revfy <re.emese@gmail.com>
-L: kernel-hardening@lists.openwall.com
+L: linux-hardening@vger.kernel.org
S: Maintained
F: Documentation/kbuild/gcc-plugins.rst
F: scripts/Makefile.gcc-plugins
@@ -8678,7 +8678,7 @@ F: drivers/input/input-mt.c
K: \b(ABS|SYN)_MT_
INSIDE SECURE CRYPTO DRIVER
-M: Antoine Tenart <antoine.tenart@bootlin.com>
+M: Antoine Tenart <atenart@kernel.org>
L: linux-crypto@vger.kernel.org
S: Maintained
F: drivers/crypto/inside-secure/
@@ -9802,7 +9802,7 @@ F: drivers/scsi/53c700*
LEAKING_ADDRESSES
M: Tobin C. Harding <me@tobin.cc>
M: Tycho Andersen <tycho@tycho.pizza>
-L: kernel-hardening@lists.openwall.com
+L: linux-hardening@vger.kernel.org
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/tobin/leaks.git
F: scripts/leaking_addresses.pl
diff --git a/include/linux/khugepaged.h b/include/linux/khugepaged.h
index bc45ea1efbf7973362c6cb99b433ecba4f95612a..c941b73773216fc9a935c94e844254221e2ae390 100644
--- a/include/linux/khugepaged.h
+++ b/include/linux/khugepaged.h
@@ -15,6 +15,7 @@ extern int __khugepaged_enter(struct mm_struct *mm);
extern void __khugepaged_exit(struct mm_struct *mm);
extern int khugepaged_enter_vma_merge(struct vm_area_struct *vma,
unsigned long vm_flags);
+extern void khugepaged_min_free_kbytes_update(void);
#ifdef CONFIG_SHMEM
extern void collapse_pte_mapped_thp(struct mm_struct *mm, unsigned long addr);
#else
@@ -85,6 +86,10 @@ static inline void collapse_pte_mapped_thp(struct mm_struct *mm,
unsigned long addr)
{
}
+
+static inline void khugepaged_min_free_kbytes_update(void)
+{
+}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
#endif /* _LINUX_KHUGEPAGED_H */
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 7de11dcd534d6fdb171c382bf14e896ca0e6b5c3..434c9c34aeb6e12df15942f1272587f7ad087cc8 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -54,7 +54,8 @@ static inline void mapping_set_error(struct address_space *mapping, int error)
__filemap_set_wb_err(mapping, error);
/* Record it in superblock */
- errseq_set(&mapping->host->i_sb->s_wb_err, error);
+ if (mapping->host)
+ errseq_set(&mapping->host->i_sb->s_wb_err, error);
/* Record it in flags for now, for legacy callers */
if (error == -ENOSPC)
diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index 3a494cfa56d2838df387daec0ef2205f1b1be3e0..58b0d9c502a1a4ebac2a6820af0c4287f9997438 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -56,6 +56,9 @@ enum scan_result {
#define CREATE_TRACE_POINTS
#include <trace/events/huge_memory.h>
+static struct task_struct *khugepaged_thread __read_mostly;
+static DEFINE_MUTEX(khugepaged_mutex);
+
/* default scan 8*512 pte (or vmas) every 30 second */
static unsigned int khugepaged_pages_to_scan __read_mostly;
static unsigned int khugepaged_pages_collapsed;
@@ -2304,8 +2307,6 @@ static void set_recommended_min_free_kbytes(void)
int start_stop_khugepaged(void)
{
- static struct task_struct *khugepaged_thread __read_mostly;
- static DEFINE_MUTEX(khugepaged_mutex);
int err = 0;
mutex_lock(&khugepaged_mutex);
@@ -2332,3 +2333,11 @@ int start_stop_khugepaged(void)
mutex_unlock(&khugepaged_mutex);
return err;
}
+
+void khugepaged_min_free_kbytes_update(void)
+{
+ mutex_lock(&khugepaged_mutex);
+ if (khugepaged_enabled() && khugepaged_thread)
+ set_recommended_min_free_kbytes();
+ mutex_unlock(&khugepaged_mutex);
+}
diff --git a/mm/mmap.c b/mm/mmap.c
index 40248d84ad5fbd486a65a6c45bdf4413e8e6789c..bdd19f5b994e0f39b6c0bc2bb9c1cdb06c6707e9 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1781,7 +1781,11 @@ unsigned long mmap_region(struct file *file, unsigned long addr,
merge = vma_merge(mm, prev, vma->vm_start, vma->vm_end, vma->vm_flags,
NULL, vma->vm_file, vma->vm_pgoff, NULL, NULL_VM_UFFD_CTX);
if (merge) {
- fput(file);
+ /* ->mmap() can change vma->vm_file and fput the original file. So
+ * fput the vma->vm_file here or we would add an extra fput for file
+ * and cause general protection fault ultimately.
+ */
+ fput(vma->vm_file);
vm_area_free(vma);
vma = merge;
/* Update vm_flags and possible addr to pick up the change. We don't
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 6866533de8e6a5ffd68f044ebdbb7aa654cacb0b..780c8f023b282699f74826886874daaa5eb2ed27 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -69,6 +69,7 @@
#include <linux/nmi.h>
#include <linux/psi.h>
#include <linux/padata.h>
+#include <linux/khugepaged.h>
#include <asm/sections.h>
#include <asm/tlbflush.h>
@@ -7904,6 +7905,8 @@ int __meminit init_per_zone_wmark_min(void)
setup_min_slab_ratio();
#endif
+ khugepaged_min_free_kbytes_update();
+
return 0;
}
postcore_initcall(init_per_zone_wmark_min)