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authorRoss Zwisler <ross.zwisler@linux.intel.com>2018-02-27 10:29:51 -0700
committerDan Williams <dan.j.williams@intel.com>2018-03-06 11:05:37 -0800
commit9741a559971856fca61a83840b558b4f94500d89 (patch)
treeab66750172619c8af0d38aeb85e60c6e8bcf84f2 /tools/testing
parentnfit_test: improve structure offset handling (diff)
downloadlinux-dev-9741a559971856fca61a83840b558b4f94500d89.tar.xz
linux-dev-9741a559971856fca61a83840b558b4f94500d89.zip
nfit_test: fix buffer overrun, add sanity check
It turns out that we were overrunning the 'nfit_buf' buffer in nfit_test0_setup() in the (t->setup_hotplug == 1) case because we failed to correctly account for all of the acpi_nfit_memory_map structures. Fix the structure count which will increase the allocation size of 'nfit_buf' in nfit_test0_alloc(). Also add some WARN_ON()s to nfit_test0_setup() and nfit_test1_setup() to catch future issues where the size of the buffer doesn't match the amount of data we're writing. Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'tools/testing')
-rw-r--r--tools/testing/nvdimm/test/nfit.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/tools/testing/nvdimm/test/nfit.c b/tools/testing/nvdimm/test/nfit.c
index 1376fc95c33a..fcd233342273 100644
--- a/tools/testing/nvdimm/test/nfit.c
+++ b/tools/testing/nvdimm/test/nfit.c
@@ -104,7 +104,8 @@ enum {
NUM_HINTS = 8,
NUM_BDW = NUM_DCR,
NUM_SPA = NUM_PM + NUM_DCR + NUM_BDW,
- NUM_MEM = NUM_DCR + NUM_BDW + 2 /* spa0 iset */ + 4 /* spa1 iset */,
+ NUM_MEM = NUM_DCR + NUM_BDW + 2 /* spa0 iset */
+ + 4 /* spa1 iset */ + 1 /* spa11 iset */,
DIMM_SIZE = SZ_32M,
LABEL_SIZE = SZ_128K,
SPA_VCD_SIZE = SZ_4M,
@@ -2047,6 +2048,9 @@ static void nfit_test0_setup(struct nfit_test *t)
flush->hint_address[i] = t->flush_dma[4]
+ i * sizeof(u64);
offset += flush->header.length;
+
+ /* sanity check to make sure we've filled the buffer */
+ WARN_ON(offset != t->nfit_size);
}
post_ars_status(&t->ars_state, &t->badrange, t->spa_set_dma[0],
@@ -2165,6 +2169,9 @@ static void nfit_test1_setup(struct nfit_test *t)
dcr->windows = 0;
offset += dcr->header.length;
+ /* sanity check to make sure we've filled the buffer */
+ WARN_ON(offset != t->nfit_size);
+
post_ars_status(&t->ars_state, &t->badrange, t->spa_set_dma[0],
SPA2_SIZE);