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From: "jan.kratochvil at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug tdep/15713] New: i386_linux_resume calls QUIT -> lock-up
Date: Tue, 02 Jul 2013 19:57:00 -0000
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X-Bugzilla-Type: new
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X-Bugzilla-Product: gdb
X-Bugzilla-Component: tdep
X-Bugzilla-Version: HEAD
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X-Bugzilla-Who: jan.kratochvil at redhat dot com
X-Bugzilla-Status: NEW
X-Bugzilla-Priority: P2
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http://sourceware.org/bugzilla/show_bug.cgi?id=15713

            Bug ID: 15713
           Summary: i386_linux_resume calls QUIT -> lock-up
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: tdep
          Assignee: unassigned at sourceware dot org
          Reporter: jan.kratochvil at redhat dot com
            Target: i386-unknown-linux-gnu

i386_linux_resume calls target_read() which calls QUIT;.

But linux_nat_resume does not expect called linux_ops->to_resume may throw and
in such case it will leave lwp_info as if the inferior resumed.  But the real
inferior was not yet resumed by i386_linux_resume.

This leads to lock-up as GDB then tries to stop the inferior which is already
stopped and so no new waitpid event gets generated.

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