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| author | Liam R. Howlett <Liam.Howlett@oracle.com> | 2023-09-29 21:30:40 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-10-07 00:11:38 +0300 |
| commit | 824135c46b00df7fb369ec7f1f8607427bbebeb0 (patch) | |
| tree | aea237d178a45ce93cae06005e8364232050aef4 /arch/riscv | |
| parent | 1419430c8abb5a00590169068590dd54d86590ba (diff) | |
| download | linux-824135c46b00df7fb369ec7f1f8607427bbebeb0.tar.xz | |
mmap: fix error paths with dup_anon_vma()
When the calling function fails after the dup_anon_vma(), the
duplication of the anon_vma is not being undone. Add the necessary
unlink_anon_vma() call to the error paths that are missing them.
This issue showed up during inspection of the error path in vma_merge()
for an unrelated vma iterator issue.
Users may experience increased memory usage, which may be problematic as
the failure would likely be caused by a low memory situation.
Link: https://lkml.kernel.org/r/20230929183041.2835469-3-Liam.Howlett@oracle.com
Fixes: d4af56c5c7c6 ("mm: start tracking VMAs with maple tree")
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Lorenzo Stoakes <lstoakes@gmail.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Jann Horn <jannh@google.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'arch/riscv')
0 files changed, 0 insertions, 0 deletions