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| author | Hajime Tazaki <thehajime@gmail.com> | 2024-11-08 23:28:34 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-11-12 02:20:23 +0100 |
| commit | 247d720b2c5d22f7281437fd6054a138256986ba (patch) | |
| tree | c076622a29135a53b87701f67a739c571171fae9 /mm/gup.c | |
| parent | ocfs2: fix UBSAN warning in ocfs2_verify_volume() (diff) | |
| download | linux-247d720b2c5d22f7281437fd6054a138256986ba.tar.xz linux-247d720b2c5d22f7281437fd6054a138256986ba.zip | |
nommu: pass NULL argument to vma_iter_prealloc()
When deleting a vma entry from a maple tree, it has to pass NULL to
vma_iter_prealloc() in order to calculate internal state of the tree, but
it passed a wrong argument. As a result, nommu kernels crashed upon
accessing a vma iterator, such as acct_collect() reading the size of vma
entries after do_munmap().
This commit fixes this issue by passing a right argument to the
preallocation call.
Link: https://lkml.kernel.org/r/20241108222834.3625217-1-thehajime@gmail.com
Fixes: b5df09226450 ("mm: set up vma iterator for vma_iter_prealloc() calls")
Signed-off-by: Hajime Tazaki <thehajime@gmail.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/gup.c')
0 files changed, 0 insertions, 0 deletions