From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 72A37394BE2C; Fri, 12 Feb 2021 19:12:42 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 72A37394BE2C From: "cvs-commit at gcc dot gnu.org" To: gdb-prs@sourceware.org Subject: [Bug threads/26228] FAIL: gdb.threads/create-fail.exp: iteration x: run till end (SIG32) Date: Fri, 12 Feb 2021 19:12:42 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gdb X-Bugzilla-Component: threads X-Bugzilla-Version: HEAD X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: cvs-commit at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at sourceware dot org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://sourceware.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: gdb-prs@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gdb-prs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 12 Feb 2021 19:12:42 -0000 https://sourceware.org/bugzilla/show_bug.cgi?id=3D26228 --- Comment #11 from cvs-commit at gcc dot gnu.org --- The master branch has been updated by Tom de Vries : https://sourceware.org/git/gitweb.cgi?p=3Dbinutils-gdb.git;h=3D089436f78743= 628b22e87c2f8d32bd5f9d818f5a commit 089436f78743628b22e87c2f8d32bd5f9d818f5a Author: Tom de Vries Date: Fri Feb 12 20:12:37 2021 +0100 [gdb/threads] Fix lin_thread_get_thread_signals for glibc 2.28 When running test-case gdb.threads/create-fail.exp on openSUSE Factory (with glibc version 2.32) I run into: ... (gdb) continue Continuing. [New Thread 0x7ffff7c83700 (LWP 626354)] [New Thread 0x7ffff7482700 (LWP 626355)] [Thread 0x7ffff7c83700 (LWP 626354) exited] [New Thread 0x7ffff6c81700 (LWP 626356)] [Thread 0x7ffff7482700 (LWP 626355) exited] [New Thread 0x7ffff6480700 (LWP 626357)] [Thread 0x7ffff6c81700 (LWP 626356) exited] [New Thread 0x7ffff5c7f700 (LWP 626358)] [Thread 0x7ffff6480700 (LWP 626357) exited] pthread_create: 22: Invalid argument Thread 6 "create-fail" received signal SIG32, Real-time event 32. [Switching to Thread 0x7ffff5c7f700 (LWP 626358)] 0x00007ffff7d87695 in clone () from /lib64/libc.so.6 (gdb) FAIL: gdb.threads/create-fail.exp: iteration 1: run till end ... The problem is that glibc-internal signal SIGCANCEL is not recognized by gdb. There's code in check_thread_signals that is supposed to take care of t= hat, but it's not working because this code in lin_thread_get_thread_signals= has stopped working: ... /* NPTL reserves the first two RT signals, but does not provide any way for the debugger to query the signal numbers - fortunately they don't change. */ sigaddset (set, __SIGRTMIN); sigaddset (set, __SIGRTMIN + 1); ... Since glibc commit d2dc5467c6 "Filter out NPTL internal signals (BZ #22391)" (first released as part of glibc 2.28), a sigaddset with a glibc-intern= al signal has no other effect than setting errno to EINVALID. Fix this by eliminating the usage of sigset_t in check_thread_signals a= nd lin_thread_get_thread_signals. The same problem was observed on Ubuntu 20.04. Tested on x86_64-linux, openSUSE Factory. Tested on aarch64-linux, Ubuntu 20.04 and Ubuntu 18.04. gdb/ChangeLog: 2021-02-12 Tom de Vries PR threads/26228 * linux-nat.c (lin_thread_get_thread_signals): Remove. (lin_thread_signals): New static var. (lin_thread_get_thread_signal_num, lin_thread_get_thread_signal= ): New function. * linux-nat.h (lin_thread_get_thread_signals): Remove. (lin_thread_get_thread_signal_num, lin_thread_get_thread_signal= ): Declare. * linux-thread-db.c (check_thread_signals): Use lin_thread_get_thread_signal_num and lin_thread_get_thread_sign= al. --=20 You are receiving this mail because: You are on the CC list for the bug.=