Alexander Shishkin 5890358c60 intel_th: Use correct device when freeing buffers ... commit 0ed2424b91 upstream. Commit d5c435df4a ("intel_th: msu: Use the real device in case of IOMMU domain allocation") changes dma buffer allocation to use the actual underlying device, but forgets to change the deallocation path, which leads to (if you've got CAP_SYS_RAWIO): > # echo 0,0 > /sys/bus/intel_th/devices/0-msc0/nr_pages > ------------[ cut here ]------------ > kernel BUG at ../linux/drivers/iommu/intel-iommu.c:3670! > CPU: 3 PID: 231 Comm: sh Not tainted 4.17.0-rc1+ #2729 > RIP: 0010:intel_unmap+0x11e/0x130 ... > Call Trace: > intel_free_coherent+0x3e/0x60 > msc_buffer_win_free+0x100/0x160 [intel_th_msu] This patch fixes the buffer deallocation code to use the correct device. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Fixes: d5c435df4a ("intel_th: msu: Use the real device in case of IOMMU domain allocation") Reported-by: Baofeng Tian <baofeng.tian@intel.com> CC: stable@vger.kernel.org # v4.14+ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-06-05 11:41:59 +02:00
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coresight	coresight: Use %px to print pcsr instead of %p	2018-05-30 07:52:32 +02:00
intel_th	intel_th: Use correct device when freeing buffers	2018-06-05 11:41:59 +02:00
stm	hwtracing: stm: fix build error on some arches	2018-06-05 11:41:59 +02:00