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soc: qcom: mem-buf: Fix memory leak in mem_buf_alloc()

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When mem_buf_alloc() encounters an error after mapping the memory
in the stage-2 page tables of the VM, the SGL descriptor is not
freed in the error handling path, so free it.

Change-Id: I6e6fa296311575bb55cd0b9da7a138970e8b8e74
Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org>
This commit is contained in:
Isaac J. Manjarres 2020-09-02 13:48:25 -07:00
commit 2b91868a72
1 changed files with 7 additions and 2 deletions
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9
drivers/soc/qcom/mem-buf.c
View file

@ -1458,12 +1458,17 @@ void *mem_buf_alloc(struct mem_buf_allocation_data *alloc_data)
return membuf;
err_get_file:
if (mem_buf_remove_mem(membuf) < 0)
if (mem_buf_remove_mem(membuf) < 0) {
kfree(membuf->sgl_desc);
goto err_mem_req;
}
err_add_mem:
if (mem_buf_unmap_mem_s1(membuf->sgl_desc) < 0)
if (mem_buf_unmap_mem_s1(membuf->sgl_desc) < 0) {
kfree(membuf->sgl_desc);
goto err_mem_req;
}
err_map_mem_s1:
kfree(membuf->sgl_desc);
if (mem_buf_unmap_mem_s2(membuf->memparcel_hdl) < 0)
goto err_mem_req;
err_map_mem_s2: