staging: android: ashmem: Fix a race condition in pin ioctls

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commit ce8a3a9e76 upstream.

ashmem_pin_unpin() reads asma->file and asma->size before taking the
ashmem_mutex, so it can race with other operations that modify them.

Build-tested only.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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This commit is contained in:

Ben Hutchings 2018-02-04 02:06:27 +00:00

parent c2c37cd0a0

commit 8f628209e6

1 changed files with 11 additions and 8 deletions

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drivers/staging/android/ashmem.c

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