[ RUN ] KFDSVMRangeTest.PartialUnmapSysMemTest
/home/yifan/brahma/libhsakmt/tests/kfdtest/src/KFDTestUtil.cpp:245: Failure
Value of: (hsaKmtAllocMemory(m_Node, m_Size, m_Flags, &m_pBuf))
Actual: 1
Expected: HSAKMT_STATUS_SUCCESS
Which is: 0
/home/yifan/brahma/libhsakmt/tests/kfdtest/src/KFDTestUtil.cpp:248: Failure
Value of: (hsaKmtMapMemoryToGPUNodes(m_pBuf, m_Size, __null, mapFlags, 1,
&m_Node))
Actual: 1
Expected: HSAKMT_STATUS_SUCCESS
Which is: 0
/home/yifan/brahma/libhsakmt/tests/kfdtest/src/KFDTestUtil.cpp:306: Failure
Expected: ((void *)__null) != (ptr), actual: NULL vs NULL
Segmentation fault (core dumped)
[ ] Profile: Full Test
[ ] HW capabilities: 0x9
kernel log:
[ 102.029150] ret_from_fork+0x22/0x30
[ 102.029158] ---[ end trace 15c34e782714f9a3 ]---
[ 3613.603598] amdgpu: Address: 0x7f7149ccc000 already allocated by SVM
[ 3613.610620] show_signal_msg: 27 callbacks suppressed
These is race with deferred actions from previous memory map
changes (e.g. munmap).Flush pending deffered work to avoid such case.
Signed-off-by: Yifan Zhang <yifan1.zh...@amd.com>
---
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index 3177c4a0e753..4de907f3e66a 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -1261,7 +1261,12 @@ static int kfd_ioctl_alloc_memory_of_gpu(struct file
*filep,
return -EINVAL;
#if IS_ENABLED(CONFIG_HSA_AMD_SVM)
+ /* Flush pending deferred work to avoid racing with deferred actions
+ * from previous memory map changes (e.g. munmap).
+ */
+ svm_range_list_lock_and_flush_work(svms, current->mm);
mutex_lock(&svms->lock);
+ mmap_write_unlock(current->mm);
if (interval_tree_iter_first(&svms->objects,
args->va_addr >> PAGE_SHIFT,
(args->va_addr + args->size - 1) >>
PAGE_SHIFT)) {
--
2.25.1
