[Xcb] [Bug 20335] New: select() crashes with large file descriptors

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Feb 26 12:16:41 PST 2009


           Summary: select() crashes with large file descriptors
           Product: XCB
           Version: 1.1
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Library
        AssignedTo: xcb at lists.freedesktop.org
        ReportedBy: most at museresearch.com

If you call _xcb_conn_wait or read_block in an application that has more than
FD_SETSIZE files already open, the select() calls they make will corrupt that
stack and crash the app.

This is the old poll() vs select() bug. Replacing select() with poll() fixes

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