From: Dave Airlie Date: Thu, 2 Feb 2012 15:25:16 +0000 (+0000) Subject: drm/radeon: fix use after free in ATRM bios reading code. X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=de47a9cd62771e3e78954d855d2304fbad4c5a44;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git drm/radeon: fix use after free in ATRM bios reading code. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=45503 Reported-and-Debugged-by: mlambda@gmail.com Signed-off-by: Dave Airlie --- diff --git a/drivers/gpu/drm/radeon/radeon_atpx_handler.c b/drivers/gpu/drm/radeon/radeon_atpx_handler.c index 13ac63ba6075..98724fcb0088 100644 --- a/drivers/gpu/drm/radeon/radeon_atpx_handler.c +++ b/drivers/gpu/drm/radeon/radeon_atpx_handler.c @@ -59,8 +59,9 @@ static int radeon_atrm_call(acpi_handle atrm_handle, uint8_t *bios, obj = (union acpi_object *)buffer.pointer; memcpy(bios+offset, obj->buffer.pointer, obj->buffer.length); + len = obj->buffer.length; kfree(buffer.pointer); - return obj->buffer.length; + return len; } bool radeon_atrm_supported(struct pci_dev *pdev)