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authorSrinivas Kandagatla <srinivas.kandagatla@linaro.org>2019-08-29 12:29:26 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-09-04 14:35:11 +0300
commitcf61860e6b090bea4050c5688566bfe357cacd11 (patch)
tree820f8cd494e910de96301f621466dc10062c755e /drivers/misc
parent5672ff4dc3898b6b74c114de2f53e667ab5a0327 (diff)
downloadlinux-cf61860e6b090bea4050c5688566bfe357cacd11.tar.xz
misc: fastrpc: free dma buf scatter list
dma buf scatter list is never freed, free it! Orignally detected by kmemleak: backtrace: [<ffffff80088b7658>] kmemleak_alloc+0x50/0x84 [<ffffff8008373284>] sg_kmalloc+0x38/0x60 [<ffffff8008373144>] __sg_alloc_table+0x60/0x110 [<ffffff800837321c>] sg_alloc_table+0x28/0x58 [<ffffff800837336c>] __sg_alloc_table_from_pages+0xc0/0x1ac [<ffffff800837346c>] sg_alloc_table_from_pages+0x14/0x1c [<ffffff8008097a3c>] __iommu_get_sgtable+0x5c/0x8c [<ffffff800850a1d0>] fastrpc_dma_buf_attach+0x84/0xf8 [<ffffff80085114bc>] dma_buf_attach+0x70/0xc8 [<ffffff8008509efc>] fastrpc_map_create+0xf8/0x1e8 [<ffffff80085086f4>] fastrpc_device_ioctl+0x508/0x900 [<ffffff80082428c8>] compat_SyS_ioctl+0x128/0x200 [<ffffff80080832c4>] el0_svc_naked+0x34/0x38 [<ffffffffffffffff>] 0xffffffffffffffff Reported-by: Mayank Chopra <mak.chopra@codeaurora.org> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20190829092926.12037-6-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/fastrpc.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index eee2bb398947..47ae84afac2e 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -550,6 +550,7 @@ static void fastrpc_dma_buf_detatch(struct dma_buf *dmabuf,
mutex_lock(&buffer->lock);
list_del(&a->node);
mutex_unlock(&buffer->lock);
+ sg_free_table(&a->sgt);
kfree(a);
}