I'm trying to track down a strange bug in X 1.9.0.901 (and probably .902 as well), whereby after a suspend/resume cycle long enough to time out nonlocal TCP connections, my X server crashes the first time I map an XEmacs window (probably 'the first thing that uses core fonts at all') with this unhelpful backtrace:
Backtrace: 0: X (xorg_backtrace+0x28) [0x49b7d8] 1: X (0x400000+0x5dde9) [0x45dde9] 2: /lib/libpthread.so.0 (0x7f50fc27f000+0xe9b0) [0x7f50fc28d9b0] 3: /lib/libc.so.6 (0x7f50fb1f3000+0x731c0) [0x7f50fb2661c0] 4: /lib/libc.so.6 (cfree+0x6c) [0x7f50fb269abc] 5: /usr/lib/libXfont.so.1 (FontFileFreeEntry+0x8f) [0x7f50fbdf12ef] 6: /usr/lib/libXfont.so.1 (FontFileFreeTable+0x2e) [0x7f50fbdf136e] 7: /usr/lib/libXfont.so.1 (FontFileFreeDir+0xd) [0x7f50fbdf139d] 8: /usr/lib/libXfont.so.1 (FontFileFreeFPE+0x12) [0x7f50fbdf4692] 9: X (0x400000+0x2d04b) [0x42d04b] 10: X (0x400000+0x2fa8b) [0x42fa8b] 11: X (ProcessWorkQueue+0x21) [0x4307e1] 12: X (WaitForSomething+0x82) [0x456f72] 13: X (0x400000+0x2bf92) [0x42bf92] 14: X (0x400000+0x209ee) [0x4209ee] 15: /lib/libc.so.6 (__libc_start_main+0xfd) [0x7f50fb211d6d] 16: X (0x400000+0x205a9) [0x4205a9] Segmentation fault at address 0xffffffff0241b148 gdb is not much more helpful (I mean, yes, obviously we have a double-free(), but why? something to do with the font server I've got at the end of the font path specifically to trip bitrot like this, I suppose), so I'm planning to valgrind it... but I'm a bit chary of that because the last time I valground the X server, horrible disasters resulted which ended in a system lockup and massive filesystem corruption. Of course, that was before the era of KMS: perhaps things are better now that X hardly touches the hardware. So... has anyone ever valground the X server? Does it work? (Of course it will be slow. I'm expecting *that*.) _______________________________________________ [email protected]: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.freedesktop.org/mailman/listinfo/xorg Your subscription address: [email protected]
