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2ed3ce7efb
Rewrite wait_for_listener()'s pattern matching to avoid tripping the if-condition when pipefail is on. awk doesn't gracefully handle SIGPIPE with a non-zero exit code, so grep exiting upon finding a match causes false-positives when the pipefail option is used (grep exits, SIGPIPE emits, and awk complains with a non-zero exit code). Instead, move all of the pattern matching into awk so that SIGPIPE cannot happen and the correct exit code is returned. Signed-off-by: Bobby Eshleman <bobbyeshleman@meta.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Link: https://patch.msgid.link/20251108-vsock-selftests-fixes-and-improvements-v4-2-d5e8d6c87289@meta.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>