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Sat, 14 Nov 2026 18:07:45 -0800 (PST) Received: from fedora-laptop ([172.245.82.59]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-862880a5298sm7113595a34.7.2026.11.14.18.07.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 14 Nov 2026 18:07:44 -0800 (PST) Date: Sat, 14 Nov 2026 20:07:35 -0600 From: Ming Lei To: shao.mingyin@zte.com.cn Cc: shuah@kernel.org, linux-block@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH 2/4] selftests: ublk: propagate stress worker failures Message-ID: References: <202611112257529855AMDZLzg8ZmFDQ3fBstbi@zte.com.cn> <20261111225759742pwhACD8p_0GdXSYIk_Ob6@zte.com.cn> X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261111225759742pwhACD8p_0GdXSYIk_Ob6@zte.com.cn> On Wed, Nov 11, 2026 at 10:57:59PM +0800, shao.mingyin@zte.com.cn wrote: > From: Shao Mingyin > > The stress tests update ERR_CODE in background subshells and use a bare > wait in the parent. A worker can therefore fail while the parent still > prints PASS and exits successfully. Calling _show_result() from a worker > also removes backing files shared with other workers. > > Generalize the recovery PID collector and use it to wait for every stress > worker in the parent. Return errors from the worker helpers, leave result > reporting and cleanup to the parent, and reset the PID array after each > batch. Keep failures ahead of skips when collecting worker exit statuses. > > Fixes: bb2cabf23568 ("selftests: ublk: run stress tests in parallel") > Reported-by: Ming Lei > Link: https://lore.kernel.org/all/avJ0Vn9G7XhZv-XL@fedora-laptop/ > Signed-off-by: Shao Mingyin > --- Reviewed-by: Ming Lei Thanks, Ming