Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from Andrew Morton:
 "11 patches.

  Subsystems affected by this: misc, mm/hugetlb, mm/vmalloc, mm/misc,
  romfs, relay, uprobes, squashfs, mm/cma, mm/pagealloc"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm, page_alloc: fix core hung in free_pcppages_bulk()
  mm: include CMA pages in lowmem_reserve at boot
  squashfs: avoid bio_alloc() failure with 1Mbyte blocks
  uprobes: __replace_page() avoid BUG in munlock_vma_page()
  kernel/relay.c: fix memleak on destroy relay channel
  romfs: fix uninitialized memory leak in romfs_dev_read()
  mm/rodata_test.c: fix missing function declaration
  mm/vunmap: add cond_resched() in vunmap_pmd_range
  khugepaged: adjust VM_BUG_ON_MM() in __khugepaged_enter()
  hugetlb_cgroup: convert comma to semicolon
  mailmap: add Andi Kleen
This commit is contained in:
Linus Torvalds 2020-08-21 14:44:48 -07:00
commit 349111f050
10 changed files with 21 additions and 9 deletions

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@ -32,6 +32,7 @@ Alex Shi <alex.shi@linux.alibaba.com> <alex.shi@intel.com>
Alex Shi <alex.shi@linux.alibaba.com> <alex.shi@linaro.org>
Al Viro <viro@ftp.linux.org.uk>
Al Viro <viro@zenIV.linux.org.uk>
Andi Kleen <ak@linux.intel.com> <ak@suse.de>
Andi Shyti <andi@etezian.org> <andi.shyti@samsung.com>
Andreas Herrmann <aherrman@de.ibm.com>
Andrew Morton <akpm@linux-foundation.org>

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@ -217,10 +217,8 @@ int romfs_dev_read(struct super_block *sb, unsigned long pos,
size_t limit;
limit = romfs_maxsize(sb);
if (pos >= limit)
if (pos >= limit || buflen > limit - pos)
return -EIO;
if (buflen > limit - pos)
buflen = limit - pos;
#ifdef CONFIG_ROMFS_ON_MTD
if (sb->s_mtd)

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@ -87,7 +87,11 @@ static int squashfs_bio_read(struct super_block *sb, u64 index, int length,
int error, i;
struct bio *bio;
bio = bio_alloc(GFP_NOIO, page_count);
if (page_count <= BIO_MAX_PAGES)
bio = bio_alloc(GFP_NOIO, page_count);
else
bio = bio_kmalloc(GFP_NOIO, page_count);
if (!bio)
return -ENOMEM;

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@ -205,7 +205,7 @@ static int __replace_page(struct vm_area_struct *vma, unsigned long addr,
try_to_free_swap(old_page);
page_vma_mapped_walk_done(&pvmw);
if (vma->vm_flags & VM_LOCKED)
if ((vma->vm_flags & VM_LOCKED) && !PageCompound(old_page))
munlock_vma_page(old_page);
put_page(old_page);

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@ -197,6 +197,7 @@ free_buf:
static void relay_destroy_channel(struct kref *kref)
{
struct rchan *chan = container_of(kref, struct rchan, kref);
free_percpu(chan->buf);
kfree(chan);
}

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@ -655,7 +655,7 @@ static void __init __hugetlb_cgroup_file_dfl_init(int idx)
snprintf(cft->name, MAX_CFTYPE_NAME, "%s.events", buf);
cft->private = MEMFILE_PRIVATE(idx, 0);
cft->seq_show = hugetlb_events_show;
cft->file_offset = offsetof(struct hugetlb_cgroup, events_file[idx]),
cft->file_offset = offsetof(struct hugetlb_cgroup, events_file[idx]);
cft->flags = CFTYPE_NOT_ON_ROOT;
/* Add the events.local file */
@ -664,7 +664,7 @@ static void __init __hugetlb_cgroup_file_dfl_init(int idx)
cft->private = MEMFILE_PRIVATE(idx, 0);
cft->seq_show = hugetlb_events_local_show;
cft->file_offset = offsetof(struct hugetlb_cgroup,
events_local_file[idx]),
events_local_file[idx]);
cft->flags = CFTYPE_NOT_ON_ROOT;
/* NULL terminate the last cft */

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@ -466,7 +466,7 @@ int __khugepaged_enter(struct mm_struct *mm)
return -ENOMEM;
/* __khugepaged_exit() must not run from under us */
VM_BUG_ON_MM(khugepaged_test_exit(mm), mm);
VM_BUG_ON_MM(atomic_read(&mm->mm_users) == 0, mm);
if (unlikely(test_and_set_bit(MMF_VM_HUGEPAGE, &mm->flags))) {
free_mm_slot(mm_slot);
return 0;

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@ -1302,6 +1302,11 @@ static void free_pcppages_bulk(struct zone *zone, int count,
struct page *page, *tmp;
LIST_HEAD(head);
/*
* Ensure proper count is passed which otherwise would stuck in the
* below while (list_empty(list)) loop.
*/
count = min(pcp->count, count);
while (count) {
struct list_head *list;
@ -7888,7 +7893,7 @@ int __meminit init_per_zone_wmark_min(void)
return 0;
}
core_initcall(init_per_zone_wmark_min)
postcore_initcall(init_per_zone_wmark_min)
/*
* min_free_kbytes_sysctl_handler - just a wrapper around proc_dointvec() so

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@ -7,6 +7,7 @@
*/
#define pr_fmt(fmt) "rodata_test: " fmt
#include <linux/rodata_test.h>
#include <linux/uaccess.h>
#include <asm/sections.h>

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@ -104,6 +104,8 @@ static void vunmap_pmd_range(pud_t *pud, unsigned long addr, unsigned long end,
if (pmd_none_or_clear_bad(pmd))
continue;
vunmap_pte_range(pmd, addr, next, mask);
cond_resched();
} while (pmd++, addr = next, addr != end);
}