[Bug 493220] Re: Rovclock crashes with floating-point exception
As a naive workaround, the following simple patch would prevent division
by zero and SIGFPE:
int round_div(int num, int den)
{
-return (num + (den / 2)) / den;
+return den ? (num + (den / 2)) / den : 0;
}
Reported values now would be zeros, which is certainly wrong, but at
least the program no longer crashes:
...
XTAL: 27.0 MHz, RefDiv: 0
Core: 0.0 MHz, Mem: 0.0 MHz
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Title:
Rovclock crashes with floating-point exception
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[Bug 493220] Re: Rovclock crashes with floating-point exception
It happens because of division by zero in round_div() function, here's a backtrace from gdb: Program received signal SIGFPE, Arithmetic exception. 0x08048cc4 in round_div (num=0, den=0) at rovclock.c:180 180 return (num + (den / 2)) / den; Current language: auto; currently minimal (gdb) bt #0 0x08048cc4 in round_div (num=0, den=0) at rovclock.c:180 #1 0x08049166 in pll_info (rovclock=0xbfbfe798) at rovclock.c:258 #2 0x08049c79 in main (argc=2, argv=0xbfbfe858) at rovclock.c:467 This software is from 2005~2006, perhaps it does not support newer video cards properly. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/493220 Title: Rovclock crashes with floating-point exception To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rovclock/+bug/493220/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 493220] Re: Rovclock crashes with floating-point exception
just in-case anyone is interested, just installed on ubuntu mate; Radeon overclock 0.6e by Hasw (h...@hasw.net) Found ATI card on 01:00, device id: 0x6610 I/O base address: 0xce00 Video BIOS shadow found @ 0xc Invalid reference clock from BIOS: 0.0 MHz Memory size: 0 kB Memory channels: 1, CD,CH only: 0 tRcdRD: 3 tRcdWR: 1 tRP: 3 tRAS: 6 tRRD: 1 tR2W-CL: 1 tWR: 1 tW2R: 0 tW2Rsb: 0 tR2R: 1 tRFC: 13 tWL(0.5): 0 tCAS: 0 tCMD: 0 tSTR: 0 Floating point exception (core dumped) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/493220 Title: Rovclock crashes with floating-point exception To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rovclock/+bug/493220/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 493220] Re: Rovclock crashes with floating-point exception
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: rovclock (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/493220 Title: Rovclock crashes with floating-point exception To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rovclock/+bug/493220/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 493220] Re: Rovclock crashes with floating-point exception
I get floating point exceptions. Here is my info: $ sudo rovclock -i Radeon overclock 0.6e by Hasw (h...@hasw.net) Found ATI card on 01:05, device id: 0x9612 I/O base address: 0x9000 Video BIOS shadow found @ 0xc Invalid reference clock from BIOS: 0.0 MHz Memory size: 0 kB Memory channels: 0, CD,CH only: 0 tRcdRD: 3 tRcdWR: 1 tRP: 3 tRAS: 6 tRRD: 1 tR2W-CL: 1 tWR: 1 tW2R: 0 tW2Rsb: 0 tR2R: 1 tRFC: 13 tWL(0.5): 0 tCAS: 0 tCMD: 0 tSTR: 0 Floating point exception (core dumped) $ lspci |grep Radeon 01:05.0 VGA compatible controller: ATI Technologies Inc RS780M/RS780MN [Radeon HD 3200 Graphics] $ apt-cache policy rovclock rovclock: Installed: 0.6e-6 Candidate: 0.6e-6 Version table: *** 0.6e-6 0 500 http://us.archive.ubuntu.com/ubuntu/ maverick/universe amd64 Packages 100 /var/lib/dpkg/status $ lsb_release -rd Description:Ubuntu maverick (development branch) Release:10.10 $ uname -a Linux hh2-laptop 2.6.35-22-generic #33-Ubuntu SMP Sun Sep 19 20:32:27 UTC 2010 x86_64 GNU/Linux -- Rovclock crashes with floating-point exception https://bugs.launchpad.net/bugs/493220 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 493220] Re: Rovclock crashes with floating-point exception
Hi, I also have a Radeon card and I don't get "floating-point exception". Please note that I run Lucid with the default kernel and a more recent rovclock version than yours. Maybe you could give to Lucid. $ sudo rovclock -i Radeon overclock 0.6e by Hasw (h...@hasw.net) Found ATI card on 01:00, device id: 0x71c5 I/O base address: 0x3000 Video BIOS shadow found @ 0xc Invalid reference clock from BIOS: 0.0 MHz Memory size: 262144 kB Memory channels: 0, CD,CH only: 0 tRcdRD: 3 tRcdWR: 1 tRP: 3 tRAS: 6 tRRD: 1 tR2W-CL: 1 tWR: 1 tW2R: 0 tW2Rsb: 0 tR2R: 1 tRFC: 13 tWL(0.5): 0 tCAS: 0 tCMD: 0 tSTR: 0 XTAL: 27.0 MHz, RefDiv: 13 Core: 1.29 MHz, Mem: 0.0 MHz $ lspci |grep Radeon 01:00.0 VGA compatible controller: ATI Technologies Inc M56P [Radeon Mobility X1600] $ apt-cache policy rovclock rovclock: Installed: 0.6e-6 Candidate: 0.6e-6 Version table: *** 0.6e-6 0 500 http://ca.archive.ubuntu.com/ubuntu/ lucid/universe Packages 100 /var/lib/dpkg/status $ lsb_release -rd Description:Ubuntu 10.04.1 LTS Release:10.04 $ uname -a Linux simon-laptop 2.6.32-24-generic #42-Ubuntu SMP Fri Aug 20 14:21:58 UTC 2010 x86_64 GNU/Linux -- Rovclock crashes with floating-point exception https://bugs.launchpad.net/bugs/493220 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 493220] Re: Rovclock crashes with floating-point exception
** Changed in: rovclock (Debian) Status: Unknown => New -- Rovclock crashes with floating-point exception https://bugs.launchpad.net/bugs/493220 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 493220] Re: Rovclock crashes with floating-point exception
** Bug watch added: Debian Bug tracker #562625 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=562625 ** Also affects: rovclock (Debian) via http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=562625 Importance: Unknown Status: Unknown -- Rovclock crashes with floating-point exception https://bugs.launchpad.net/bugs/493220 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 493220] Re: Rovclock crashes with floating-point exception
** Attachment added: "Dependencies.txt" http://launchpadlibrarian.net/36501718/Dependencies.txt ** Attachment added: "XsessionErrors.txt" http://launchpadlibrarian.net/36501719/XsessionErrors.txt -- Rovclock crashes with floating-point exception https://bugs.launchpad.net/bugs/493220 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
