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| author | Jakub Kicinski <[email protected]> | 2025-02-20 18:36:34 +0000 |
|---|---|---|
| committer | Jakub Kicinski <[email protected]> | 2025-02-20 18:37:30 +0000 |
| commit | 5d6ba5ab8582aa35c1ee98e47af28e6f6772596c (patch) | |
| tree | a4a3a2d311773c19909c9928273e0bcae01a39ce /mm/madvise.c | |
| parent | Merge tag 'linux-can-next-for-6.15-20250219' of git://git.kernel.org/pub/scm/... (diff) | |
| parent | Merge tag 'net-6.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/net... (diff) | |
| download | kernel-5d6ba5ab8582aa35c1ee98e47af28e6f6772596c.tar.gz kernel-5d6ba5ab8582aa35c1ee98e47af28e6f6772596c.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.14-rc4).
No conflicts or adjacent changes.
Signed-off-by: Jakub Kicinski <[email protected]>
Diffstat (limited to 'mm/madvise.c')
| -rw-r--r-- | mm/madvise.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/mm/madvise.c b/mm/madvise.c index 49f3a75046f6..08b207f8e61e 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -933,7 +933,16 @@ static long madvise_dontneed_free(struct vm_area_struct *vma, */ end = vma->vm_end; } - VM_WARN_ON(start >= end); + /* + * If the memory region between start and end was + * originally backed by 4kB pages and then remapped to + * be backed by hugepages while mmap_lock was dropped, + * the adjustment for hugetlb vma above may have rounded + * end down to the start address. + */ + if (start == end) + return 0; + VM_WARN_ON(start > end); } if (behavior == MADV_DONTNEED || behavior == MADV_DONTNEED_LOCKED) |