From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from conuserg-08.nifty.com (conuserg-08.nifty.com [210.131.2.75]) by sourceware.org (Postfix) with ESMTPS id 206023858C2D for ; Fri, 6 May 2022 18:46:54 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 206023858C2D Authentication-Results: sourceware.org; dmarc=fail (p=none dis=none) header.from=nifty.ne.jp Authentication-Results: sourceware.org; spf=fail smtp.mailfrom=nifty.ne.jp Received: from localhost.localdomain (ak044095.dynamic.ppp.asahi-net.or.jp [119.150.44.95]) (authenticated) by conuserg-08.nifty.com with ESMTP id 246IkWt2002049; Sat, 7 May 2022 03:46:39 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conuserg-08.nifty.com 246IkWt2002049 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.ne.jp; s=dec2015msa; t=1651862799; bh=Tiurq20CJ4e9iMM0bC1bSmLoHP7YcPA53NgEX1LoAZ8=; h=From:To:Cc:Subject:Date:From; b=luThe7N+Yn7gA0DMGB3X99zZSxUO4Exl0ber9Ch5y7nIb7LhlD+lcz5zz1XgnFcW5 nkq1WuCc3fOdbtPfElehxLMI582xjXZvVYcoeMTaJhY+hgcr+ZezzWnSPn0LXveh9k wOM26BDAkYUgR7OnxYNfLtOwkn70UGvw4+9D4iI7glLzqKt2NMRjyThR4Hl1fAUYl1 9cLymepavaJ3K9dYeHkXaRYyDo2eDwqsPxNhKoLpztqN8gT04LDpXTpJAYAy+C4+B6 1JCpn0HybnY4gwIVI24o+SVanjr4PYwVJS2CH/ffdFR1TCzAwxOTZlh9LJg4sWY1wC c1ibT8vkNSdLQ== X-Nifty-SrcIP: [119.150.44.95] From: Takashi Yano To: cygwin-patches@cygwin.com Subject: [PATCH] Cygwin: sigproc: Avoid segfault caused by signal just after fork(). Date: Sat, 7 May 2022 03:46:27 +0900 Message-Id: <20220506184627.1650-1-takashi.yano@nifty.ne.jp> X-Mailer: git-send-email 2.36.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-10.6 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: cygwin-patches@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Cygwin core component patch submission and discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 06 May 2022 18:46:58 -0000 - The commit "Cygwin: always add sigmask to child info" also tries to fix this issue, however, did not fix enough. This patch fixes that. --- winsup/cygwin/sigproc.cc | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/winsup/cygwin/sigproc.cc b/winsup/cygwin/sigproc.cc index 987dfea37..a70c3b6f6 100644 --- a/winsup/cygwin/sigproc.cc +++ b/winsup/cygwin/sigproc.cc @@ -1356,9 +1356,9 @@ wait_sig (VOID *) when _main_tls points to the system-allocated stack, not to the parent thread. In that case find_tls fails, and we fetch the sigmask from the child_info passed from the parent. */ - tl_entry = cygheap->find_tls (_main_tls); - if (tl_entry) + if (cygwin_finished_initializing) { + tl_entry = cygheap->find_tls (_main_tls); dummy_mask = _main_tls->sigmask; cygheap->unlock_tls (tl_entry); } -- 2.36.0