From: Bobby Eshleman <[email protected]>

Sometimes VMs will have some intermittent dmesg warnings that are
unrelated to vsock. Change the dmesg parsing to filter on strings
containing 'vsock' to avoid false positive failures that are unrelated
to vsock. The downside is that it is possible for some vsock related
warnings to not contain the substring 'vsock', so those will be missed.

Fixes: a4a65c6fe08b ("selftests/vsock: add initial vmtest.sh for vsock")
Reviewed-by: Simon Horman <[email protected]>
Signed-off-by: Bobby Eshleman <[email protected]>
---
Previously was part of the series:
https://lore.kernel.org/all/20251022-vsock-selftests-fixes-and-improvements-v1-0-edeb179d6...@meta.com/
---
 tools/testing/selftests/vsock/vmtest.sh | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/vsock/vmtest.sh 
b/tools/testing/selftests/vsock/vmtest.sh
index edacebfc1632..e1732f236d14 100755
--- a/tools/testing/selftests/vsock/vmtest.sh
+++ b/tools/testing/selftests/vsock/vmtest.sh
@@ -389,9 +389,9 @@ run_test() {
        local rc
 
        host_oops_cnt_before=$(dmesg | grep -c -i 'Oops')
-       host_warn_cnt_before=$(dmesg --level=warn | wc -l)
+       host_warn_cnt_before=$(dmesg --level=warn | grep -c -i 'vsock')
        vm_oops_cnt_before=$(vm_ssh -- dmesg | grep -c -i 'Oops')
-       vm_warn_cnt_before=$(vm_ssh -- dmesg --level=warn | wc -l)
+       vm_warn_cnt_before=$(vm_ssh -- dmesg --level=warn | grep -c -i 'vsock')
 
        name=$(echo "${1}" | awk '{ print $1 }')
        eval test_"${name}"
@@ -403,7 +403,7 @@ run_test() {
                rc=$KSFT_FAIL
        fi
 
-       host_warn_cnt_after=$(dmesg --level=warn | wc -l)
+       host_warn_cnt_after=$(dmesg --level=warn | grep -c -i vsock)
        if [[ ${host_warn_cnt_after} -gt ${host_warn_cnt_before} ]]; then
                echo "FAIL: kernel warning detected on host" | log_host 
"${name}"
                rc=$KSFT_FAIL
@@ -415,7 +415,7 @@ run_test() {
                rc=$KSFT_FAIL
        fi
 
-       vm_warn_cnt_after=$(vm_ssh -- dmesg --level=warn | wc -l)
+       vm_warn_cnt_after=$(vm_ssh -- dmesg --level=warn | grep -c -i vsock)
        if [[ ${vm_warn_cnt_after} -gt ${vm_warn_cnt_before} ]]; then
                echo "FAIL: kernel warning detected on vm" | log_host "${name}"
                rc=$KSFT_FAIL

---
base-commit: 255d75ef029f33f75fcf5015052b7302486f7ad2
change-id: 20251104-vsock-vmtest-dmesg-fix-b2c59e1d9c38

Best regards,
-- 
Bobby Eshleman <[email protected]>


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