[Bug 373121] Re: strace locks up Xorg?
** Tags added: natty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/373121 Title: strace locks up Xorg? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/strace/+bug/373121/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 373121] Re: strace locks up Xorg?
** Changed in: strace (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/373121 Title: strace locks up Xorg? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/strace/+bug/373121/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 373121] Re: strace locks up Xorg?
We're closing this bug since it is has been some time with no response from the original reporter. However, if the issue still exists please feel free to reopen with the requested information. Also, if you could, please test against the latest development version of Ubuntu, since this confirms the bug is one we may be able to pass upstream for help. ** Changed in: xserver-xorg-video-openchrome (Ubuntu) Status: Incomplete = Expired -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/373121 Title: strace locks up Xorg? -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 373121] Re: strace locks up Xorg?
This bug report was filed against an old version of Ubuntu. Can you confirm whether this is still an issue in natty? If you don't mind, it would be very helpful if you could update the bug report in launchpad to 'Fix Released' if it is no longer an issue for you, or if it is still occurring under natty, please tag the bug 'natty' so it's easier for us to track. ** Changed in: xserver-xorg-video-openchrome (Ubuntu) Status: Triaged = New ** Changed in: xserver-xorg-video-openchrome (Ubuntu) Status: New = Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/373121 Title: strace locks up Xorg? -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 373121] Re: strace locks up Xorg?
Not a bug but expected behaviour: https://lkml.org/lkml/2010/6/9/333 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/373121 Title: strace locks up Xorg? -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 373121] Re: strace locks up Xorg?
** Tags added: jaunty -- strace locks up Xorg? https://bugs.launchpad.net/bugs/373121 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 373121] Re: strace locks up Xorg?
** Tags added: hardy -- strace locks up Xorg? https://bugs.launchpad.net/bugs/373121 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 373121] Re: strace locks up Xorg?
Attaching lspci -vvnn output.
** Attachment added: lspci -vvnn
http://launchpadlibrarian.net/26424359/lspci_vvnn.txt
** Description changed:
I notified in some condition segfaulting of system-config-printer and
tryed to strace it. But after adding -v option, I get locked desktop on
some point of system-config-printer starting up. This point is not
static. Nothing is working in GUI except mouse moving, keyboard LEDs
react on *Lock keys pressed, and I cat switch to console to kill strace.
And 'kill -9 `pidof strace`' is needed to terminate it. After kill,
desktop back to functional, and system-config-printer show up and runs.
While lockup, programs seems to continue its work (for example, vlc
still playing a radio), CPU load is low as normal.
Example of console output on strace after kill:
read(4,
\1\1\245\1\0\0\0\0\374\0\0\0\323\0`\1\200\1\266\2\200\1\235\2\20\0\0\0\20\252\327\t...,
4096) = 32
read(4, 0x90e2cc0, 4096)= -1 EAGAIN (Resource temporarily
unavailable)
select(5, [4], [4], NULL, NULL) = 1 (out [4])
writev(4, [{\0\2\0\323\0`\1..., 8}, {NULL, 0}, {..., 0}], 3) = 8
select(5, [4], [], NULL, NULL) = 1 (in [4])
read(4,
\1\1\246\1\0\0\0\0\374\0\0\0\330\0`\1\200\1\266\2\200\1\205\2\20\0\0\0\20\2Killed
Videocard: VGA compatible controller: VIA Technologies, Inc.
CN896/VN896/P4M900 [Chrome 9 HC] (rev 01) (no kernel module driver
used), Xorg.log for video:
(--) PCI:*(0...@1:0:0) VIA Technologies, Inc. CN896/VN896/P4M900 [Chrome 9
HC] rev 1, Mem @ 0xf400/67108864, 0xfb00/16777216, BIOS @
0x/65536
...
(II) Module openchrome: vendor=http://openchrome.org/;
compiled for 1.5.99.902, module version = 0.2.903
Module class: X.Org Video Driver
ABI class: X.Org Video Driver, version 5.0
(II) OPENCHROME: Driver for VIA Chrome chipsets: CLE266, KM400/KN400,
K8M800/K8N800, PM800/PM880/CN400, P4M800Pro/VN800/CN700,
K8M890/K8N890, P4M900/VN896/CN896, CX700/VX700, P4M890, VX800
(II) Primary Device is: PCI 0...@00:00:0
(!!) VIA Technologies does not support this driver in any way.
- I can't determine, is OpenChrome driver is used. Attaching full log.
+ I can't determine, is OpenChrome driver in use or not. Attaching full
+ log.
How can I determine a bug? Any suggestions?
--
strace locks up Xorg?
https://bugs.launchpad.net/bugs/373121
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 373121] Re: strace locks up Xorg?
** Attachment added: Xorg.0.log http://launchpadlibrarian.net/26424346/Xorg.0.log -- strace locks up Xorg? https://bugs.launchpad.net/bugs/373121 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 373121] Re: strace locks up Xorg?
I've seen this before but I'm not sure where the bug is. I guess there has to be a bug in the kernel or in xorg because a userspace program is not supposed to be able to crash the system like that. If I run it just now on my machine with intel G45 chipset I get this: lseek(3, 73728, SEEK_SET) = 73728 close(3)= 0 munmap(0x7f7bcbd23000, 4096)= 0 *** glibc detected *** strace: malloc(): memory corruption (fast): 0x00e46460 *** === Backtrace: = /lib/libc.so.6[0x7f1807d80cb/lib/libc.so.6(__libc_start_main+0xe6)[0x7f1807d275a6] strace[0x402119] === Memory map: 0040-00447000 r-xp 08:02 2065537 /usr/bin/strace 00646000-00647000 r--p 00046000 08:02 2065537 /usr/bin/strace 00647000-00648000 rw-p 00047000 08:02 2065537 /usr/bin/strace 00648000-00656000 rw-p 00648000 00:00 0 00e46000-00e67000 rw-p 00e46000 00:00 0 [heap] 7f18-7f1800021000 rw-p 7f18 00:00 0 7f1800021000-7f180400 ---p 7f1800021000 00:00 0 7f1807af1000-7f1807b07000 r-xp 08:02 10534973 /lib/libgcc_s.so.1 7f1807b07000-7f1807d07000 ---p 00016000 08:02 10534973 /lib/libgcc_s.so.1 7f1807d07000-7f1807d08000 r--p 00016000 08:02 10534973 /lib/libgcc_s.so.1 7f1807d08000-7f1807d09000 rw-p 00017000 08:02 10534973 /lib/libgcc_s.so.1 7f1807d09000-7f1807e71000 r-xp 08:02 10534951 /lib/libc-2.9.so 7f1807e71000-7f1808071000 ---p 00168000 08:02 10534951 /lib/libc-2.9.so 7f1808071000-7f1808075000 r--p 00168000 08:02 10534951 /lib/libc-2.9.so 7f1808075000-7f1808076000 rw-p 0016c000 08:02 10534951 /lib/libc-2.9.so 7f1808076000-7f180807b000 rw-p 7f1808076000 00:00 0 7f180807b000-7f180809b000 r-xp 08:02 10534931 /lib/ld-2.9.so 7f1808278000-7f180827a000 rw-p 7f1808278000 00:00 0 7f1808297000-7f180829a000 rw-p 7f1808297000 00:00 0 7f180829a000-7f180829b000 r--p 0001f000 08:02 10534931 /lib/ld-2.9.so 7f180829b000-7f180829c000 rw-p 0002 08:02 10534931 /lib/ld-2.9.so 7fff10286000-7fff1029b000 rw-p 7ffea000 00:00 0 [stack] 7fff103fe000-7fff103ff000 r-xp 7fff103fe000 00:00 0 [vdso] ff60-ff601000 r-xp 00:00 0 [vsyscall] select(Aborted -- strace locks up Xorg? https://bugs.launchpad.net/bugs/373121 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 373121] Re: strace locks up Xorg?
I searched through my bugs and I found that I reported this issue in LP even: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/336771 However, it was closed as a dupe of bug 316762: https://bugs.launchpad.net/ubuntu/+source/strace/+bug/316762 Now, I'm not entirely sure I agree with it being marked as a duplicate because strace is a normal non-root program and it should not be able to take down the X server. What else is interesting to mention here? I think it can be repro'd with gdmsetup dialog as well and I suppose both printer and gdmsetup does something special with hardware that makes them vulnerable to this effect because I can strace a lot other stuff on this box with no problems. --- It would be very interesting to see if the strace patch proposed by red hat also makes the Xorg lockup go away. The memory corruption might after all be completely unrelated to the X lockup. ** Also affects: strace (Ubuntu) Importance: Undecided Status: New -- strace locks up Xorg? https://bugs.launchpad.net/bugs/373121 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 373121] Re: strace locks up Xorg?
It is very interesting, but looks like strace don't lock it, if I minimizing terminal emulator window right after launching command line. -- strace locks up Xorg? https://bugs.launchpad.net/bugs/373121 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 373121] Re: strace locks up Xorg?
We've seen several instances where strace of something led to freezes. See bug 316240 as an example. Maybe there's a common root cause to all these problems, but for now we can treat it as a driver bug. This bug should probably go upstream. ** Package changed: xorg (Ubuntu) = xserver-xorg-video-openchrome (Ubuntu) ** Changed in: xserver-xorg-video-openchrome (Ubuntu) Importance: Undecided = Low ** Changed in: xserver-xorg-video-openchrome (Ubuntu) Status: New = Triaged -- strace locks up Xorg? https://bugs.launchpad.net/bugs/373121 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
