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cxl/region: decrement ->nr_targets on error in cxl_region_attach() 

The ++ needs a match -- on the clean up path.  If the p->nr_targets
value gets to be more than 16 it leads to uninitialized data in
cxl_port_setup_targets().

drivers/cxl/core/region.c:995 cxl_port_setup_targets() error: uninitialized symbol 'eiw'.

Fixes: 27b3f8d138 ("cxl/region: Program target lists")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YuepCvUAoCtdpcoO@kili
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Carpenter 2022-08-01 13:20:58 +03:00 committed by Dan Williams
parent c7e3548cac
commit 5e42bcbc3f
1 changed files with 3 additions and 1 deletions
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4
drivers/cxl/core/region.c
View File

@ -1218,12 +1218,14 @@ static int cxl_region_attach(struct cxl_region *cxlr,
if (p->nr_targets == p->interleave_ways) {
rc = cxl_region_setup_targets(cxlr);
if (rc)
goto err;
goto err_decrement;
p->state = CXL_CONFIG_ACTIVE;
}
return 0;
err_decrement:
p->nr_targets--;
err:
for (iter = ep_port; !is_cxl_root(iter);
iter = to_cxl_port(iter->dev.parent))