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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2018-01-13 14:04:06 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-01-13 14:04:06 -0800 |
| commit | d5a047fd92c6e0db7d56b9e20200cc30f6c7c8e2 (patch) | |
| tree | 229f38b29f90efa6a300aadbd25ee3d27ba131ec /drivers | |
| parent | Merge tag 'char-misc-4.15-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc (diff) | |
| parent | staging: android: ashmem: fix a race condition in ASHMEM_SET_SIZE ioctl (diff) | |
| download | linux-dev-d5a047fd92c6e0db7d56b9e20200cc30f6c7c8e2.tar.xz linux-dev-d5a047fd92c6e0db7d56b9e20200cc30f6c7c8e2.zip | |
Merge tag 'staging-4.15-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fix from Greg KH:
"Here is a single android ashmem bugfix that resolves a reported issue
in that interface. It's been in linux-next this week with no reported
issues"
* tag 'staging-4.15-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: android: ashmem: fix a race condition in ASHMEM_SET_SIZE ioctl
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/android/ashmem.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/staging/android/ashmem.c b/drivers/staging/android/ashmem.c index 0f695df14c9d..372ce9913e6d 100644 --- a/drivers/staging/android/ashmem.c +++ b/drivers/staging/android/ashmem.c @@ -765,10 +765,12 @@ static long ashmem_ioctl(struct file *file, unsigned int cmd, unsigned long arg) break; case ASHMEM_SET_SIZE: ret = -EINVAL; + mutex_lock(&ashmem_mutex); if (!asma->file) { ret = 0; asma->size = (size_t)arg; } + mutex_unlock(&ashmem_mutex); break; case ASHMEM_GET_SIZE: ret = asma->size; |