Date: Sun, 16 Jun 2013 17:48:52 +0200 From: Michiel Boland <boland37@xs4all.nl> To: Konstantin Belousov <kostikbel@gmail.com> Cc: FreeBSD Stable <freebsd-stable@freebsd.org> Subject: Re: system sporadically hangs on shutdown after switching to WITH_NEW_XORG Message-ID: <51BDDE64.2040801@xs4all.nl> In-Reply-To: <20130616153710.GT91021@kib.kiev.ua> References: <51BDD593.5000102@xs4all.nl> <20130616153710.GT91021@kib.kiev.ua>
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On 06/16/2013 17:37, Konstantin Belousov wrote: > On Sun, Jun 16, 2013 at 05:11:15PM +0200, Michiel Boland wrote: >> Hi. Recently I switched to WITH_NEW_XORG, primarily because the stock X server >> with Intel driver has some issues that make it unusable for me. >> >> The new X server and Intel driver works extremely well, so kudos to whoever made >> this possible. >> >> Unfortunately, I am now experiencing random hangs on shutdown. On shutdown the >> system randomly freezes after >> >> [...] syslogd: exiting on signal 15 >> >> I would then expect to see 'Waiting (max 60 seconds) for system process 'XXX' to >> stop messages, but these never arrive. >> >> I paniced the machine in ddb, so I have a crash dump if someone want to look at >> it. The crashinfo is at http://barrytown.boland.org/core.txt (I would have >> pasted it here but it is a bit verbose.) >> >> Machine has an Intel G41 chipset, with a SAMSUNG SSD 830 Series HD, running >> 9.1-STABLE r251803. Serial console. GENERIC kernel, expect for options DDB and >> ALT_BREAK_TO_DEBUGGER. >> >> Who knows what's going on here? > > I do not see anything related to i915 in the core.txt you provided. > > Next time the machine hangs, start with the output of ps command from > ddb and 'show allpcpu', together with 'alltrace'. > Ok. I appended 'thread apply all bt' from kgdb to the core.txt, maybe there is something interesting in there. I did notice the following Thread 17 (Thread 100007): #0 cpustop_handler () at /usr/src/sys/amd64/amd64/mp_machdep.c:1392 #1 0xffffffff80cbebbd in ipi_nmi_handler () at /usr/src/sys/amd64/amd64/mp_machdep.c:1374 #2 0xffffffff80ccc159 in trap (frame=0xffffffff81424890) at /usr/src/sys/amd64/amd64/trap.c:211 #3 0xffffffff80cb55af in nmi_calltrap () at /usr/src/sys/amd64/amd64/exception.S:501 #4 0xffffffff80d0c029 in vga_txtmouse (scp=0xfffffe0005586600, x=320, y=200, on=<value optimized out>) at cpufunc.h:186 Previous frame inner to this frame (corrupt stack?) Maybe the hang is caused by the removal of the text mouse cursor? (Just guessing here.) Cheers Michiel
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