diff options
| author | Pan Bian <bianpan2016@163.com> | 2017-04-23 18:23:21 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-07-05 14:37:22 +0200 |
| commit | aad7041e721e2bb7aa7755d8ffca0fbc2ee1e17f (patch) | |
| tree | 31fcd2d7ae66c478543e6527842213437e046e67 /drivers/cpufreq | |
| parent | 48952c6d517adb6204392fe493f638ce8899911a (diff) | |
iommu/amd: Fix incorrect error handling in amd_iommu_bind_pasid()
commit 73dbd4a4230216b6a5540a362edceae0c9b4876b upstream.
In function amd_iommu_bind_pasid(), the control flow jumps
to label out_free when pasid_state->mm and mm is NULL. And
mmput(mm) is called. In function mmput(mm), mm is
referenced without validation. This will result in a NULL
dereference bug. This patch fixes the bug.
Signed-off-by: Pan Bian <bianpan2016@163.com>
Fixes: f0aac63b873b ('iommu/amd: Don't hold a reference to mm_struct')
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/cpufreq')
0 files changed, 0 insertions, 0 deletions