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| author | Andrea Arcangeli <[email protected]> | 2018-01-05 00:18:09 +0000 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2018-01-05 00:45:09 +0000 |
| commit | 0cbb4b4f4c44f54af268969b18d8deda63aded59 (patch) | |
| tree | e4195e9d5425397f557117077d6306eadf94e350 /tools/perf/scripts/python/mem-phys-addr.py | |
| parent | mm/sparse.c: wrong allocation for mem_section (diff) | |
| download | kernel-0cbb4b4f4c44f54af268969b18d8deda63aded59.tar.gz kernel-0cbb4b4f4c44f54af268969b18d8deda63aded59.zip | |
userfaultfd: clear the vma->vm_userfaultfd_ctx if UFFD_EVENT_FORK fails
The previous fix in commit 384632e67e08 ("userfaultfd: non-cooperative:
fix fork use after free") corrected the refcounting in case of
UFFD_EVENT_FORK failure for the fork userfault paths.
That still didn't clear the vma->vm_userfaultfd_ctx of the vmas that
were set to point to the aborted new uffd ctx earlier in
dup_userfaultfd.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Andrea Arcangeli <[email protected]>
Reported-by: syzbot <[email protected]>
Reviewed-by: Mike Rapoport <[email protected]>
Cc: Eric Biggers <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/mem-phys-addr.py')
0 files changed, 0 insertions, 0 deletions