* 2.5.37 won't run X? @ 2002-09-21 10:10 Helge Hafting 2002-09-21 13:41 ` Florin Iucha 2002-09-21 14:53 ` Martin J. Bligh 0 siblings, 2 replies; 13+ messages in thread From: Helge Hafting @ 2002-09-21 10:10 UTC (permalink / raw) To: linux-kernel X won't start on 2.5.37, but works with 2.5.36 The screen goes black as usual, but then nothing else happens. ssh'ing in from another machine shows XFree86 using 50% cpu, i.e. one of the two cpu's in this machine. killing the XFre86 process is impossible, even with kill -9 from root. sysrq SAK worked though, so I could recover the machine. But I had to boot a different kernel to run X. lspci 00:0f.0 VGA compatible controller: S3 Inc. ViRGE/DX or /GX (rev 01) 2.5.37 SMP kernel XFree86 Version 4.1.0.1 / X Window System (protocol Version 11, revision 0, vendor release 6510) Release Date: 21 December 2001 Distribution debian testing Helge Hafting ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: 2.5.37 won't run X? 2002-09-21 10:10 2.5.37 won't run X? Helge Hafting @ 2002-09-21 13:41 ` Florin Iucha 2002-09-21 14:53 ` Martin J. Bligh 1 sibling, 0 replies; 13+ messages in thread From: Florin Iucha @ 2002-09-21 13:41 UTC (permalink / raw) To: Helge Hafting; +Cc: linux-kernel [-- Attachment #1: Type: text/plain, Size: 1433 bytes --] On Sat, Sep 21, 2002 at 12:10:41PM +0200, Helge Hafting wrote: > X won't start on 2.5.37, but works with 2.5.36 > The screen goes black as usual, but then nothing else happens. > ssh'ing in from another machine shows XFree86 using 50% cpu, > i.e. one of the two cpu's in this machine. > > killing the XFre86 process is impossible, even with kill -9 > from root. sysrq SAK worked though, so I could recover > the machine. But I had to boot a different kernel to run X. > > lspci > 00:0f.0 VGA compatible controller: S3 Inc. ViRGE/DX or /GX (rev 01) > > 2.5.37 SMP kernel > > XFree86 Version 4.1.0.1 / X Window System > (protocol Version 11, revision 0, vendor release 6510) > Release Date: 21 December 2001 > > Distribution debian testing > > Helge Hafting I get the same behavior on two machines here (a desktop with Duron/SIS 735 chipset/ATI 8500 video and a laptop with PIII/BX chipset/S3 Savage MX video) so it is not hardware specific. I am running debian testing, the laptop has XFree 4.1.0 from debian, the desktop has XFree 4.2.0 from xfree.org . I am not runnning SMP or preempt. Preempt kernel on the laptop last worked in 2.5.33 . When enabling preempt in 2.5.36 I get an oops, while in 2.5.37 I get a bunch of oopses, continuously scrolling off the screen. florin -- "If it's not broken, let's fix it till it is." 41A9 2BDE 8E11 F1C5 87A6 03EE 34B3 E075 3B90 DFE4 [-- Attachment #2: Type: application/pgp-signature, Size: 189 bytes --] ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: 2.5.37 won't run X? 2002-09-21 10:10 2.5.37 won't run X? Helge Hafting 2002-09-21 13:41 ` Florin Iucha @ 2002-09-21 14:53 ` Martin J. Bligh 2002-09-21 16:17 ` Florin Iucha 1 sibling, 1 reply; 13+ messages in thread From: Martin J. Bligh @ 2002-09-21 14:53 UTC (permalink / raw) To: Helge Hafting, linux-kernel > X won't start on 2.5.37, but works with 2.5.36 > The screen goes black as usual, but then nothing else happens. > ssh'ing in from another machine shows XFree86 using 50% cpu, > i.e. one of the two cpu's in this machine. Looks like Linus fixed this already in his BK tree ... want to grab that and see if it fixes your problem? M. ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: 2.5.37 won't run X? 2002-09-21 14:53 ` Martin J. Bligh @ 2002-09-21 16:17 ` Florin Iucha 2002-09-21 16:25 ` Martin J. Bligh 0 siblings, 1 reply; 13+ messages in thread From: Florin Iucha @ 2002-09-21 16:17 UTC (permalink / raw) To: Martin J. Bligh; +Cc: Helge Hafting, linux-kernel [-- Attachment #1: Type: text/plain, Size: 716 bytes --] On Sat, Sep 21, 2002 at 07:53:37AM -0700, Martin J. Bligh wrote: > > X won't start on 2.5.37, but works with 2.5.36 > > The screen goes black as usual, but then nothing else happens. > > ssh'ing in from another machine shows XFree86 using 50% cpu, > > i.e. one of the two cpu's in this machine. > > Looks like Linus fixed this already in his BK tree ... want > to grab that and see if it fixes your problem? What changeset do you think fixed this? Anyway, I grabbed ftp://nl.linux.org/pub/linux/bk2patch/tagged-to-head.v2.5 and patched it in. Same result X eating 99% cpu time. florin -- "If it's not broken, let's fix it till it is." 41A9 2BDE 8E11 F1C5 87A6 03EE 34B3 E075 3B90 DFE4 [-- Attachment #2: Type: application/pgp-signature, Size: 189 bytes --] ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: 2.5.37 won't run X? 2002-09-21 16:17 ` Florin Iucha @ 2002-09-21 16:25 ` Martin J. Bligh 2002-09-21 18:59 ` Florin Iucha 0 siblings, 1 reply; 13+ messages in thread From: Martin J. Bligh @ 2002-09-21 16:25 UTC (permalink / raw) To: Florin Iucha; +Cc: Helge Hafting, linux-kernel >> > X won't start on 2.5.37, but works with 2.5.36 >> > The screen goes black as usual, but then nothing else happens. >> > ssh'ing in from another machine shows XFree86 using 50% cpu, >> > i.e. one of the two cpu's in this machine. >> >> Looks like Linus fixed this already in his BK tree ... want >> to grab that and see if it fixes your problem? > > What changeset do you think fixed this? Well, this bit looked hopeful: 23 hours torvalds 1.575 Fix vm86 system call interface to entry.S. This has been broken since the thread_info support went in (early July), and can cause lockups at X startup etc. ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: 2.5.37 won't run X? 2002-09-21 16:25 ` Martin J. Bligh @ 2002-09-21 18:59 ` Florin Iucha 2002-09-21 20:23 ` Andries Brouwer 0 siblings, 1 reply; 13+ messages in thread From: Florin Iucha @ 2002-09-21 18:59 UTC (permalink / raw) To: Martin J. Bligh; +Cc: Helge Hafting, linux-kernel [-- Attachment #1: Type: text/plain, Size: 919 bytes --] On Sat, Sep 21, 2002 at 09:25:18AM -0700, Martin J. Bligh wrote: > >> > X won't start on 2.5.37, but works with 2.5.36 > >> > The screen goes black as usual, but then nothing else happens. > >> > ssh'ing in from another machine shows XFree86 using 50% cpu, > >> > i.e. one of the two cpu's in this machine. > >> > >> Looks like Linus fixed this already in his BK tree ... want > >> to grab that and see if it fixes your problem? > > > > What changeset do you think fixed this? > > Well, this bit looked hopeful: > > 23 hours torvalds 1.575 Fix vm86 system call interface to entry.S. > This has been broken since the thread_info support went in (early July), > and can cause lockups at X startup etc. X is not locked up, as it eats all the CPU. And 2.5.36 works just fine. florin -- "If it's not broken, let's fix it till it is." 41A9 2BDE 8E11 F1C5 87A6 03EE 34B3 E075 3B90 DFE4 [-- Attachment #2: Type: application/pgp-signature, Size: 189 bytes --] ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: 2.5.37 won't run X? 2002-09-21 18:59 ` Florin Iucha @ 2002-09-21 20:23 ` Andries Brouwer 2002-09-21 20:41 ` William Lee Irwin III 2002-09-22 4:30 ` William Lee Irwin III 0 siblings, 2 replies; 13+ messages in thread From: Andries Brouwer @ 2002-09-21 20:23 UTC (permalink / raw) To: Martin J. Bligh, Helge Hafting, linux-kernel On Sat, Sep 21, 2002 at 01:59:39PM -0500, Florin Iucha wrote: > X is not locked up, as it eats all the CPU. And 2.5.36 works just fine. I noticed that the pgrp-related behaviour of some programs changed. Some programs hang, some programs loop. The hang occurs when they are stopped by SIGTTOU. The infinite loop occurs when they catch SIGTTOU (and the same signal is sent immediately again when they leave the signal routine). Have not yet investigated details. ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: 2.5.37 won't run X? 2002-09-21 20:23 ` Andries Brouwer @ 2002-09-21 20:41 ` William Lee Irwin III 2002-09-22 4:30 ` William Lee Irwin III 1 sibling, 0 replies; 13+ messages in thread From: William Lee Irwin III @ 2002-09-21 20:41 UTC (permalink / raw) To: Andries Brouwer; +Cc: Martin J. Bligh, Helge Hafting, linux-kernel On Sat, Sep 21, 2002 at 01:59:39PM -0500, Florin Iucha wrote: >> X is not locked up, as it eats all the CPU. And 2.5.36 works just fine. On Sat, Sep 21, 2002 at 10:23:53PM +0200, Andries Brouwer wrote: > I noticed that the pgrp-related behaviour of some programs changed. > Some programs hang, some programs loop. The hang occurs when they > are stopped by SIGTTOU. The infinite loop occurs when they catch SIGTTOU > (and the same signal is sent immediately again when they leave the > signal routine). > Have not yet investigated details. I'm looking into it. Thanks, Bill ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: 2.5.37 won't run X? 2002-09-21 20:23 ` Andries Brouwer 2002-09-21 20:41 ` William Lee Irwin III @ 2002-09-22 4:30 ` William Lee Irwin III 2002-09-22 6:27 ` Florin Iucha 2002-09-22 12:18 ` Andries Brouwer 1 sibling, 2 replies; 13+ messages in thread From: William Lee Irwin III @ 2002-09-22 4:30 UTC (permalink / raw) To: Andries Brouwer; +Cc: Martin J. Bligh, Helge Hafting, linux-kernel On Sat, Sep 21, 2002 at 01:59:39PM -0500, Florin Iucha wrote: >> X is not locked up, as it eats all the CPU. And 2.5.36 works just fine. On Sat, Sep 21, 2002 at 10:23:53PM +0200, Andries Brouwer wrote: > I noticed that the pgrp-related behaviour of some programs changed. > Some programs hang, some programs loop. The hang occurs when they > are stopped by SIGTTOU. The infinite loop occurs when they catch SIGTTOU > (and the same signal is sent immediately again when they leave the > signal routine). > Have not yet investigated details. Linus seems to have put out 2.5.38 with some X lockup fixes. Can you still reproduce this? If so, are there non-X-related testcases where you can trigger this? My T21 Thinkpad doesn't see this at all. I'm still prodding the SIGTTOU path trying to trigger it until then. Thanks, Bill ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: 2.5.37 won't run X? 2002-09-22 4:30 ` William Lee Irwin III @ 2002-09-22 6:27 ` Florin Iucha 2002-09-23 4:56 ` Florin Iucha 2002-09-22 12:18 ` Andries Brouwer 1 sibling, 1 reply; 13+ messages in thread From: Florin Iucha @ 2002-09-22 6:27 UTC (permalink / raw) To: William Lee Irwin III, Andries Brouwer, Martin J. Bligh, Helge Hafting, linux-kernel [-- Attachment #1: Type: text/plain, Size: 1224 bytes --] On Sat, Sep 21, 2002 at 09:30:50PM -0700, William Lee Irwin III wrote: > On Sat, Sep 21, 2002 at 01:59:39PM -0500, Florin Iucha wrote: > >> X is not locked up, as it eats all the CPU. And 2.5.36 works just fine. > > On Sat, Sep 21, 2002 at 10:23:53PM +0200, Andries Brouwer wrote: > > I noticed that the pgrp-related behaviour of some programs changed. > > Some programs hang, some programs loop. The hang occurs when they > > are stopped by SIGTTOU. The infinite loop occurs when they catch SIGTTOU > > (and the same signal is sent immediately again when they leave the > > signal routine). > > Have not yet investigated details. > > Linus seems to have put out 2.5.38 with some X lockup fixes. Can you > still reproduce this? If so, are there non-X-related testcases where > you can trigger this? My T21 Thinkpad doesn't see this at all. > > I'm still prodding the SIGTTOU path trying to trigger it until then. Weird. 2.5.38 works just fine but the head from few hours ago (which supposedly had the fix) doesn't. Oh well, it works fine now on both the desktop and the laptop. florin -- "If it's not broken, let's fix it till it is." 41A9 2BDE 8E11 F1C5 87A6 03EE 34B3 E075 3B90 DFE4 [-- Attachment #2: Type: application/pgp-signature, Size: 189 bytes --] ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: 2.5.37 won't run X? 2002-09-22 6:27 ` Florin Iucha @ 2002-09-23 4:56 ` Florin Iucha 2002-09-23 4:56 ` William Lee Irwin III 0 siblings, 1 reply; 13+ messages in thread From: Florin Iucha @ 2002-09-23 4:56 UTC (permalink / raw) To: William Lee Irwin III, Andries Brouwer, Martin J. Bligh, Helge Hafting, linux-kernel [-- Attachment #1: Type: text/plain, Size: 1968 bytes --] On Sun, Sep 22, 2002 at 01:27:02AM -0500, Florin Iucha wrote: > On Sat, Sep 21, 2002 at 09:30:50PM -0700, William Lee Irwin III wrote: > > On Sat, Sep 21, 2002 at 01:59:39PM -0500, Florin Iucha wrote: > > >> X is not locked up, as it eats all the CPU. And 2.5.36 works just fine. > > > > On Sat, Sep 21, 2002 at 10:23:53PM +0200, Andries Brouwer wrote: > > > I noticed that the pgrp-related behaviour of some programs changed. > > > Some programs hang, some programs loop. The hang occurs when they > > > are stopped by SIGTTOU. The infinite loop occurs when they catch SIGTTOU > > > (and the same signal is sent immediately again when they leave the > > > signal routine). > > > Have not yet investigated details. > > > > Linus seems to have put out 2.5.38 with some X lockup fixes. Can you > > still reproduce this? If so, are there non-X-related testcases where > > you can trigger this? My T21 Thinkpad doesn't see this at all. > > > > I'm still prodding the SIGTTOU path trying to trigger it until then. > > Weird. 2.5.38 works just fine but the head from few hours ago (which > supposedly had the fix) doesn't. Oh well, it works fine now on both the > desktop and the laptop. I take that back. 2.5.38 works fine on the laptop. On the desktop the situation is tricky: * I have compiled 2.5.38 under 2.5.34+xfs, * rebooted with 2.5.38 and * spent all day long in 2.5.38, * rebooted temporarily in Windows * then all boots into 2.5.38 resulted in a lock up. The lockup happens with all kernels since 2.5.35 and it is random. It happens in xdm waiting for login, in starting up KDE, in starting up daemons at boot up. Even when hanging in X, the Alt-SysRq still works to SUB. 2.5.34+xfs (from the SGI CVS) works fine. I will try a recent snapshot from them, with a more recent kernel. florin -- "If it's not broken, let's fix it till it is." 41A9 2BDE 8E11 F1C5 87A6 03EE 34B3 E075 3B90 DFE4 [-- Attachment #2: Type: application/pgp-signature, Size: 189 bytes --] ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: 2.5.37 won't run X? 2002-09-23 4:56 ` Florin Iucha @ 2002-09-23 4:56 ` William Lee Irwin III 0 siblings, 0 replies; 13+ messages in thread From: William Lee Irwin III @ 2002-09-23 4:56 UTC (permalink / raw) To: Andries Brouwer, Martin J. Bligh, Helge Hafting, linux-kernel On Sun, Sep 22, 2002 at 11:56:17PM -0500, Florin Iucha wrote: > The lockup happens with all kernels since 2.5.35 and it is random. It > happens in xdm waiting for login, in starting up KDE, in starting up > daemons at boot up. > Even when hanging in X, the Alt-SysRq still works to SUB. > 2.5.34+xfs (from the SGI CVS) works fine. I will try a recent snapshot > from them, with a more recent kernel. > florin This is different for me. I'm seeing a false negative from is_orphaned_pgrp(). I'm poking around for the race as I go, though it isn't in is_orphaned_pgrp() itself. Cheers, Bill ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: 2.5.37 won't run X? 2002-09-22 4:30 ` William Lee Irwin III 2002-09-22 6:27 ` Florin Iucha @ 2002-09-22 12:18 ` Andries Brouwer 1 sibling, 0 replies; 13+ messages in thread From: Andries Brouwer @ 2002-09-22 12:18 UTC (permalink / raw) To: William Lee Irwin III, Martin J. Bligh, Helge Hafting, linux-kernel On Sat, Sep 21, 2002 at 09:30:50PM -0700, William Lee Irwin III wrote: > On Sat, Sep 21, 2002 at 10:23:53PM +0200, Andries Brouwer wrote: > > I noticed that the pgrp-related behaviour of some programs changed. > > Some programs hang, some programs loop. The hang occurs when they > > are stopped by SIGTTOU. The infinite loop occurs when they catch SIGTTOU > > (and the same signal is sent immediately again when they leave the > > signal routine). > > Have not yet investigated details. > > Linus seems to have put out 2.5.38 with some X lockup fixes. Can you > still reproduce this? If so, are there non-X-related testcases where > you can trigger this? My T21 Thinkpad doesn't see this at all. > > I'm still prodding the SIGTTOU path trying to trigger it until then. Yes, 2.5.38 behaves differently again, but the statement that pgrp-related behaviour of some programs changed is still true. For example: "emacs -nw foo.c" in an xterm window will start emacs fine. Now put this line in a shell script: #!/bin/sh emacs -nw $@ so that pid and pgrp of the started emacs differ. Under 2.5.33 this works, but under 2.5.3[78] this hangs. Andries ^ permalink raw reply [flat|nested] 13+ messages in thread
end of thread, other threads:[~2002-09-23 5:00 UTC | newest] Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2002-09-21 10:10 2.5.37 won't run X? Helge Hafting 2002-09-21 13:41 ` Florin Iucha 2002-09-21 14:53 ` Martin J. Bligh 2002-09-21 16:17 ` Florin Iucha 2002-09-21 16:25 ` Martin J. Bligh 2002-09-21 18:59 ` Florin Iucha 2002-09-21 20:23 ` Andries Brouwer 2002-09-21 20:41 ` William Lee Irwin III 2002-09-22 4:30 ` William Lee Irwin III 2002-09-22 6:27 ` Florin Iucha 2002-09-23 4:56 ` Florin Iucha 2002-09-23 4:56 ` William Lee Irwin III 2002-09-22 12:18 ` Andries Brouwer
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