cxl/acpi: Fix a use-after-free in cxl_parse_cfmws()

KASAN and KFENCE detected an user-after-free in the CXL driver. This
happens in the cxl_decoder_add() fail path. KASAN prints the following
error:

   BUG: KASAN: slab-use-after-free in cxl_parse_cfmws (drivers/cxl/acpi.c:299)

This happens in cxl_parse_cfmws(), where put_device() is called,
releasing cxld, which is accessed later.

Use the local variables in the dev_err() instead of pointing to the
released memory. Since the dev_err() is printing a resource, change the open
coded print format to use the %pr format specifier.

Fixes: e50fe01e1f2a ("cxl/core: Drop ->platform_res attribute for root decoders")
Signed-off-by: Breno Leitao <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Alison Schofield <[email protected]>
Reviewed-by: Dave Jiang <[email protected]>
Reviewed-by: Jonathan Cameron <[email protected]>
Signed-off-by: Vishal Verma <[email protected]>

0 files changed, 0 insertions, 0 deletions