6.6-stable review patch. If anyone has any objections, please let me know.
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From: Matthieu Baerts (NGI0) matttbe@kernel.org
commit 79322174bcc780b99795cb89d237b26006a8b94b upstream.
If there is an error to create the first netns with 'setup_ns()', 'cleanup_ns()' will be called with an empty string as first parameter.
The consequences is that 'cleanup_ns()' will try to delete an invalid netns, and wait 20 seconds if the netns list is empty.
Instead of just checking if the name is not empty, convert the string separated by spaces to an array. Manipulating the array is cleaner, and calling 'cleanup_ns()' with an empty array will be a no-op.
Fixes: 25ae948b4478 ("selftests/net: add lib.sh") Cc: stable@vger.kernel.org Acked-by: Geliang Tang geliang@kernel.org Signed-off-by: Matthieu Baerts (NGI0) matttbe@kernel.org Reviewed-by: Petr Machata petrm@nvidia.com Reviewed-by: Hangbin Liu liuhangbin@gmail.com Link: https://lore.kernel.org/r/20240605-upstream-net-20240605-selftests-net-lib-f... Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- tools/testing/selftests/net/lib.sh | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-)
--- a/tools/testing/selftests/net/lib.sh +++ b/tools/testing/selftests/net/lib.sh @@ -10,7 +10,7 @@ BUSYWAIT_TIMEOUT=$((WAIT_TIMEOUT * 1000) # Kselftest framework requirement - SKIP code is 4. ksft_skip=4 # namespace list created by setup_ns -NS_LIST="" +NS_LIST=()
############################################################################## # Helpers @@ -48,6 +48,7 @@ cleanup_ns() fi
for ns in "$@"; do + [ -z "${ns}" ] && continue ip netns delete "${ns}" &> /dev/null if ! busywait $BUSYWAIT_TIMEOUT ip netns list | grep -vq "^$ns$" &> /dev/null; then echo "Warn: Failed to remove namespace $ns" @@ -61,7 +62,7 @@ cleanup_ns()
cleanup_all_ns() { - cleanup_ns $NS_LIST + cleanup_ns "${NS_LIST[@]}" }
# setup netns with given names as prefix. e.g @@ -70,7 +71,7 @@ setup_ns() { local ns="" local ns_name="" - local ns_list="" + local ns_list=() local ns_exist= for ns_name in "$@"; do # Some test may setup/remove same netns multi times @@ -86,11 +87,11 @@ setup_ns()
if ! ip netns add "$ns"; then echo "Failed to create namespace $ns_name" - cleanup_ns "$ns_list" + cleanup_ns "${ns_list[@]}" return $ksft_skip fi ip -n "$ns" link set lo up - ! $ns_exist && ns_list="$ns_list $ns" + ! $ns_exist && ns_list+=("$ns") done - NS_LIST="$NS_LIST $ns_list" + NS_LIST+=("${ns_list[@]}") }