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e17b133878
commitfff111bf45upstream. In fastrpc_map_lookup, dma_buf_get is called to obtain a reference to the dma_buf for comparison purposes. However, this reference is never released when the function returns, leading to a dma_buf memory leak. Fix this by adding dma_buf_put before returning from the function, ensuring that the temporarily acquired reference is properly released regardless of whether a matching map is found. Fixes:9031626ade("misc: fastrpc: Fix fastrpc_map_lookup operation") Cc: stable@kernel.org Signed-off-by: Junhao Xie <bigfoot@radxa.com> Tested-by: Xilin Wu <sophon@radxa.com> Link: https://lore.kernel.org/stable/48B368FB4C7007A7%2B20251017083906.3259343-1-bigfoot%40radxa.com Link: https://patch.msgid.link/48B368FB4C7007A7+20251017083906.3259343-1-bigfoot@radxa.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>