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[35.189.131.103]) by smtp.gmail.com with ESMTPSA id o19-20020a17090a421300b001cd4989fec9sm7313925pjg.21.2022.04.22.16.59.51 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Fri, 22 Apr 2022 16:59:51 -0700 (PDT) Received: from martinet by pc-0115 with local (Exim 4.95) (envelope-from ) id 1ni3Bm-00BmZN-7o; Sat, 23 Apr 2022 08:59:50 +0900 From: Dominique Martinet To: swupdate@googlegroups.com, sbabic@denx.de Cc: Dominique Martinet Subject: [swupdate] [PATCH 4/6] network_ipc async_thread: fix hang on failed update Date: Sat, 23 Apr 2022 08:59:42 +0900 Message-Id: <20220422235944.2808227-4-dominique.martinet@atmark-techno.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220422235944.2808227-1-dominique.martinet@atmark-techno.com> References: <20220422235944.2808227-1-dominique.martinet@atmark-techno.com> MIME-Version: 1.0 X-Original-Sender: dominique.martinet@atmark-techno.com X-Original-Authentication-Results: gmr-mx.google.com; spf=pass (google.com: domain of dominique.martinet@atmark-techno.com designates 35.74.137.57 as permitted sender) smtp.mailfrom=dominique.martinet@atmark-techno.com Precedence: list Mailing-list: list swupdate@googlegroups.com; contact swupdate+owners@googlegroups.com List-ID: X-Spam-Checked-In-Group: swupdate@googlegroups.com X-Google-Group-Id: 605343134186 List-Post: , List-Help: , List-Archive: , List-Unsubscribe: , if a update is large and fails, it's likely write_image would fail. Old code would just exit there, quitting swupdate but a recent cleanup made this just exit async_thread without calling the end function, so the caller would be left hanging waiting for an update taht will never finish. This can easily be reproduced with a script that exits immediately with a failure code followed by another 'large' file, with swupdate -i or swupdate_client Fixes: 626d83f8819d ("IPC: do not call exit") Signed-off-by: Dominique Martinet Reviewed-by: Stefano babic --- I can provide a failing sw-description if required, but basically a cpio with - a small script that fails immediately - whatever image that would be ignored fails reliably for me ipc/network_ipc-if.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/ipc/network_ipc-if.c b/ipc/network_ipc-if.c index c8a6cd02c72f..bf946648edcf 100644 --- a/ipc/network_ipc-if.c +++ b/ipc/network_ipc-if.c @@ -11,6 +11,7 @@ #include #include #include +#include #include "network_ipc.h" static pthread_t async_thread_id; @@ -44,7 +45,8 @@ static void *swupdate_async_thread(void *data) if (pthread_sigmask(SIG_BLOCK, &sigpipe_mask, &saved_mask) == -1) { perror("pthread_sigmask"); - pthread_exit((void *)-1); + msg.data.status.last_result = FAILURE; + goto out; } /* Start writing the image until end */ @@ -56,7 +58,8 @@ static void *swupdate_async_thread(void *data) if (size) { if (swupdate_image_write(pbuf, size) != size) { perror("swupdate_image_write failed"); - pthread_exit((void *)-1); + msg.data.status.last_result = FAILURE; + goto out; } } } while(size > 0); @@ -69,20 +72,22 @@ static void *swupdate_async_thread(void *data) swupdate_result = ipc_wait_for_complete(rq->get); - handle = 0; - if (sigtimedwait(&sigpipe_mask, 0, &zerotime) == -1) { // currently ignored } if (pthread_sigmask(SIG_SETMASK, &saved_mask, 0) == -1) { - perror("pthread_sigmask"); + perror("pthread_sigmask"); + msg.data.status.last_result = FAILURE; + goto out; } +out: + handle = 0; if (rq->end) rq->end((RECOVERY_STATUS)swupdate_result); - pthread_exit(NULL); + pthread_exit((void*)(intptr_t)(msg.data.status.last_result == SUCCESS)); } /*