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* RE: [uml-devel] Re: [uml-user] Crash and stability problems with 2.6.15.3-bs2
@ 2006-03-06 19:04 John Dykstra
  0 siblings, 0 replies; 6+ messages in thread
From: John Dykstra @ 2006-03-06 19:04 UTC (permalink / raw)
  To: Blaisorblade, user-mode-linux-devel; +Cc: Jeff Dike

I've been seeing MM red zone messages on 2.6.16-fc3 with Jeff's patchset
from a couple of weeks ago.  I haven't reported them since that's a
pretty old version by now.  Should I post the next bunch I see?

  --  John

> -----Original Message-----
> From: user-mode-linux-devel-admin@lists.sourceforge.net 
> [mailto:user-mode-linux-devel-admin@lists.sourceforge.net] On 
> Behalf Of Blaisorblade
> Sent: Monday, March 06, 2006 11:11 AM
> To: user-mode-linux-devel@lists.sourceforge.net
> Cc: Anthony Brock; Jeff Dike
> Subject: Re: [uml-devel] Re: [uml-user] Crash and stability 
> problems with 2.6.15.3-bs2
> 
> 
> On Monday 27 February 2006 17:27, Anthony Brock wrote:
> > Sorry for taking so long to get back on this. We've been busy with 
> > some other issues. Some comments are inline below in 
> addition to the 
> > output from a new crash.
> 
> > In the mean time, we've experienced a second crash with the 
> > 2.6.15.1-bs1 kernel. It looks to be very similar to the previous 
> > crash. Only, in this case, I issued the command "uml_mconsole 
> > www-prod-1 sysrq s" in preparation for a backup (after issuing a 
> > "uml_mconsole $1 stop" command).
> 
> It's a particular scenario, and I've been doubtly about it, 
> but indeed it 
> seems that it's safe (at least by design).
> 
> > I am including the first dump below. The rest of the dump can
> > be found at:
> 
> > http://www.coherenthosting.com/prj/uml/miscellaneous/error.txt
> >
> > The time stamp at the top is in UTC, and specifies when the crash 
> > started.
> >
> > Tony
> 
> > -- time-stamp -- Feb/27/06 16:03:00 --
> > SysRq : Emergency Sync
> > events/0: page allocation failure. order:0, mode:0x20
> 0x20 == __GFP_HIGH == GFP_ATOMIC.
> 
> > 0829f510:  [<0808a1f3>] __alloc_pages+0x274/0x286
> > 0829f550:  [<0808c7e5>] kmem_getpages+0x4a/0x9f
> > 0829f564:  [<0808d2b4>] cache_grow+0x96/0x122
> > 0829f598:  [<0808d493>] cache_alloc_refill+0x153/0x186
> > 0829f5bc:  [<0808d62d>] kmem_cache_alloc+0x34/0x44
> > 0829f5d0:  [<0808d134>] alloc_slabmgmt+0x20/0x45
> > 0829f5e4:  [<0808d2cc>] cache_grow+0xae/0x122
> > 0829f614:  [<0808d493>] cache_alloc_refill+0x153/0x186
> > 0829f638:  [<0808d6dc>] __kmalloc+0x5b/0x6d
> > 0829f654:  [<08171704>] __alloc_skb+0x52/0x129
> > 0829f670:  [<0806097e>] uml_net_rx+0x1e/0x13c
> > 0829f690:  [<08060ac0>] uml_net_interrupt+0x1f/0x91
> > 0829f6d4:  [<0808595b>] handle_IRQ_event+0x24/0x54
> > 0829f6f8:  [<080859de>] __do_IRQ+0x53/0x91
> > 0829f70c:  [<08057bc8>] do_IRQ+0x20/0x2c
> > 0829f714:  [<08057d5d>] sigio_handler+0xa5/0xcf
> > 0829f72c:  [<0805e435>] sig_handler_common_skas+0xa5/0xbe
> > 0829f750:  [<0806792e>] sig_handler+0xe/0x11
> > 0829f860:  [<08057cdf>] sigio_handler+0x27/0xcf
> > 0829f87c:  [<0805e435>] sig_handler_common_skas+0xa5/0xbe
> > 0829f8a0:  [<0806792e>] sig_handler+0xe/0x11
> > 0829f9e8:  [<0805a694>] set_signals+0xa4/0xc0
> > 0829fa28:  [<0805a694>] set_signals+0xa4/0xc0
> > 0829fa64:  [<0805a694>] set_signals+0xa4/0xc0
> > 0829fa8c:  [<0805a694>] set_signals+0xa4/0xc0
> > 0829fae0:  [<0805a641>] set_signals+0x51/0xc0
> > 0829fb80:  [<081607e6>] handle_sysrq+0x1c/0x20
> > 0829fb94:  [<0806258b>] mconsole_sysrq+0x5d/0x63
> > 0829fbc0:  [<0806220f>] mconsole_stop+0x40/0x78
> > 0829fbcc:  [<08061e1d>] mc_work_proc+0x38/0x4f
> > 0829fbdc:  [<0807c175>] worker_thread+0x188/0x205
> > 0829fbe4:  [<08061de5>] mc_work_proc+0x0/0x4f
> > 0829fc08:  [<0806bde4>] default_wake_function+0x0/0x12
> > 0829fc2c:  [<0807bfed>] worker_thread+0x0/0x205
> > 0829fc30:  [<0807f21b>] kthread+0x74/0x9a
> 
> >
> > Mem-info:
> > DMA per-cpu:
> > cpu 0 hot: low 0, high 18, batch 3 used:2
> > cpu 0 cold: low 0, high 6, batch 1 used:5
> > DMA32 per-cpu: empty
> > Normal per-cpu: empty
> > HighMem per-cpu: empty
> > Free pages:         376kB (0kB HighMem)
> > Active:2985 inactive:8684 dirty:4 writeback:0 unstable:0 free:94 
> > slab:3428 mapped:933 pagetables:48 DMA free:376kB min:1024kB 
> > low:1280kB high:1536kB active:11940kB inactive:34736kB 
> present:65536kB 
> > pages_scanned:0 all_unreclaimable? no
> > lowmem_reserve[]: 0 0 0 0
> 
> There are 376kB of free pages, so it's strange that it can't 
> satisfy this 
> request.
> 
> [...]
> > DMA: 0*4kB 1*8kB 1*16kB 1*32kB 1*64kB 0*128kB 1*256kB 
> 0*512kB 0*1024kB 
> > 0*2048kB 0*4096kB = 376kB
> 
> > Swap cache: add 0, delete 0, find 0/0, race 0+0
> > Free swap  = 655340kB
> > Total swap = 655340kB
> > Free swap:       655340kB
> > 16384 pages of RAM
> 
> > 952 reserved pages
> > 11194 pages shared
> > 0 pages swap cached
> 
> -- 
> Inform me of my mistakes, so I can keep imitating Homer 
> Simpson's "Doh!". Paolo Giarrusso, aka Blaisorblade (Skype ID 
> "PaoloGiarrusso", ICQ 215621894) 
> http://www.user-mode-linux.org/~blaisorblade
> 
> 	
> 
> 	
> 
> 		
> ___________________________________ 
> Yahoo! Mail: gratis 1GB per i messaggi e allegati da 10MB 
> http://mail.yahoo.it
> 
> 
> 
> -------------------------------------------------------
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-------------------------------------------------------
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and join the prime developer group breaking into this new coding territory!
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^ permalink raw reply	[flat|nested] 6+ messages in thread
* RE: [uml-devel] Re: [uml-user] Crash and stability problems with 2.6.15.3-bs2
@ 2006-03-06 22:19 John Dykstra
  0 siblings, 0 replies; 6+ messages in thread
From: John Dykstra @ 2006-03-06 22:19 UTC (permalink / raw)
  To: Blaisorblade, user-mode-linux-devel; +Cc: Jeff Dike

Slab corruption: start=0922713c, len=512
Redzone: 0x5a2cf071/0x5a2cf071.
Last user: [<080b57ba>](free_pipe_info+0x3e/0x58)
160: 00 4e 68 08 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b
Next obj: start=09227348, len=512
Redzone: 0x170fc2a5/0x170fc2a5.
Last user: [<080b57f2>](pipe_new+0x1e/0x64)
000: 18 10 17 09 18 10 17 09 00 00 00 00 02 00 00 00
010: 20 56 86 08 04 00 00 00 00 00 00 00 00 00 00 00

In the past when I've seen this, it has seemed associated with hostfs.

  --  John

> -----Original Message-----
> From: Dykstra, John [MNBL1:0S03:EXCH] 
> Sent: Monday, March 06, 2006 1:05 PM
> To: 'Blaisorblade'; user-mode-linux-devel@lists.sourceforge.net
> Cc: Jeff Dike
> Subject: RE: [uml-devel] Re: [uml-user] Crash and stability 
> problems with 2.6.15.3-bs2
> 
> 
> I've been seeing MM red zone messages on 2.6.16-fc3 with 
> Jeff's patchset from a couple of weeks ago.  I haven't 
> reported them since that's a pretty old version by now.  
> Should I post the next bunch I see?
> 
>   --  John
> 
> > -----Original Message-----
> > From: user-mode-linux-devel-admin@lists.sourceforge.net
> > [mailto:user-mode-linux-devel-admin@lists.sourceforge.net] On 
> > Behalf Of Blaisorblade
> > Sent: Monday, March 06, 2006 11:11 AM
> > To: user-mode-linux-devel@lists.sourceforge.net
> > Cc: Anthony Brock; Jeff Dike
> > Subject: Re: [uml-devel] Re: [uml-user] Crash and stability 
> > problems with 2.6.15.3-bs2
> > 
> > 
> > On Monday 27 February 2006 17:27, Anthony Brock wrote:
> > > Sorry for taking so long to get back on this. We've been busy with
> > > some other issues. Some comments are inline below in 
> > addition to the
> > > output from a new crash.
> > 
> > > In the mean time, we've experienced a second crash with the
> > > 2.6.15.1-bs1 kernel. It looks to be very similar to the previous 
> > > crash. Only, in this case, I issued the command "uml_mconsole 
> > > www-prod-1 sysrq s" in preparation for a backup (after issuing a 
> > > "uml_mconsole $1 stop" command).
> > 
> > It's a particular scenario, and I've been doubtly about it,
> > but indeed it 
> > seems that it's safe (at least by design).
> > 
> > > I am including the first dump below. The rest of the dump can be 
> > > found at:
> > 
> > > http://www.coherenthosting.com/prj/uml/miscellaneous/error.txt
> > >
> > > The time stamp at the top is in UTC, and specifies when the crash
> > > started.
> > >
> > > Tony
> > 
> > > -- time-stamp -- Feb/27/06 16:03:00 --
> > > SysRq : Emergency Sync
> > > events/0: page allocation failure. order:0, mode:0x20
> > 0x20 == __GFP_HIGH == GFP_ATOMIC.
> > 
> > > 0829f510:  [<0808a1f3>] __alloc_pages+0x274/0x286
> > > 0829f550:  [<0808c7e5>] kmem_getpages+0x4a/0x9f
> > > 0829f564:  [<0808d2b4>] cache_grow+0x96/0x122
> > > 0829f598:  [<0808d493>] cache_alloc_refill+0x153/0x186
> > > 0829f5bc:  [<0808d62d>] kmem_cache_alloc+0x34/0x44
> > > 0829f5d0:  [<0808d134>] alloc_slabmgmt+0x20/0x45
> > > 0829f5e4:  [<0808d2cc>] cache_grow+0xae/0x122
> > > 0829f614:  [<0808d493>] cache_alloc_refill+0x153/0x186
> > > 0829f638:  [<0808d6dc>] __kmalloc+0x5b/0x6d
> > > 0829f654:  [<08171704>] __alloc_skb+0x52/0x129
> > > 0829f670:  [<0806097e>] uml_net_rx+0x1e/0x13c
> > > 0829f690:  [<08060ac0>] uml_net_interrupt+0x1f/0x91
> > > 0829f6d4:  [<0808595b>] handle_IRQ_event+0x24/0x54
> > > 0829f6f8:  [<080859de>] __do_IRQ+0x53/0x91
> > > 0829f70c:  [<08057bc8>] do_IRQ+0x20/0x2c
> > > 0829f714:  [<08057d5d>] sigio_handler+0xa5/0xcf
> > > 0829f72c:  [<0805e435>] sig_handler_common_skas+0xa5/0xbe
> > > 0829f750:  [<0806792e>] sig_handler+0xe/0x11
> > > 0829f860:  [<08057cdf>] sigio_handler+0x27/0xcf
> > > 0829f87c:  [<0805e435>] sig_handler_common_skas+0xa5/0xbe
> > > 0829f8a0:  [<0806792e>] sig_handler+0xe/0x11
> > > 0829f9e8:  [<0805a694>] set_signals+0xa4/0xc0
> > > 0829fa28:  [<0805a694>] set_signals+0xa4/0xc0
> > > 0829fa64:  [<0805a694>] set_signals+0xa4/0xc0
> > > 0829fa8c:  [<0805a694>] set_signals+0xa4/0xc0
> > > 0829fae0:  [<0805a641>] set_signals+0x51/0xc0
> > > 0829fb80:  [<081607e6>] handle_sysrq+0x1c/0x20
> > > 0829fb94:  [<0806258b>] mconsole_sysrq+0x5d/0x63
> > > 0829fbc0:  [<0806220f>] mconsole_stop+0x40/0x78
> > > 0829fbcc:  [<08061e1d>] mc_work_proc+0x38/0x4f
> > > 0829fbdc:  [<0807c175>] worker_thread+0x188/0x205
> > > 0829fbe4:  [<08061de5>] mc_work_proc+0x0/0x4f
> > > 0829fc08:  [<0806bde4>] default_wake_function+0x0/0x12
> > > 0829fc2c:  [<0807bfed>] worker_thread+0x0/0x205
> > > 0829fc30:  [<0807f21b>] kthread+0x74/0x9a
> > 
> > >
> > > Mem-info:
> > > DMA per-cpu:
> > > cpu 0 hot: low 0, high 18, batch 3 used:2
> > > cpu 0 cold: low 0, high 6, batch 1 used:5
> > > DMA32 per-cpu: empty
> > > Normal per-cpu: empty
> > > HighMem per-cpu: empty
> > > Free pages:         376kB (0kB HighMem)
> > > Active:2985 inactive:8684 dirty:4 writeback:0 unstable:0 free:94
> > > slab:3428 mapped:933 pagetables:48 DMA free:376kB min:1024kB 
> > > low:1280kB high:1536kB active:11940kB inactive:34736kB 
> > present:65536kB
> > > pages_scanned:0 all_unreclaimable? no
> > > lowmem_reserve[]: 0 0 0 0
> > 
> > There are 376kB of free pages, so it's strange that it can't
> > satisfy this 
> > request.
> > 
> > [...]
> > > DMA: 0*4kB 1*8kB 1*16kB 1*32kB 1*64kB 0*128kB 1*256kB
> > 0*512kB 0*1024kB
> > > 0*2048kB 0*4096kB = 376kB
> > 
> > > Swap cache: add 0, delete 0, find 0/0, race 0+0
> > > Free swap  = 655340kB
> > > Total swap = 655340kB
> > > Free swap:       655340kB
> > > 16384 pages of RAM
> > 
> > > 952 reserved pages
> > > 11194 pages shared
> > > 0 pages swap cached
> > 
> > --
> > Inform me of my mistakes, so I can keep imitating Homer 
> > Simpson's "Doh!". Paolo Giarrusso, aka Blaisorblade (Skype ID 
> > "PaoloGiarrusso", ICQ 215621894) 
> > http://www.user-mode-linux.org/~blaisorblade
> > 
> > 	
> > 
> > 	
> > 
> > 		
> > ___________________________________
> > Yahoo! Mail: gratis 1GB per i messaggi e allegati da 10MB 
> > http://mail.yahoo.it
> > 
> > 
> > 
> > -------------------------------------------------------
> > This SF.Net email is sponsored by xPML, a groundbreaking
> > scripting language that extends applications into web and 
> > mobile media. Attend the live webcast and join the prime 
> > developer group breaking into this new coding territory! 
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&
dat=121642
_______________________________________________
User-mode-linux-devel mailing list
User-mode-linux-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel



-------------------------------------------------------
This SF.Net email is sponsored by xPML, a groundbreaking scripting language
that extends applications into web and mobile media. Attend the live webcast
and join the prime developer group breaking into this new coding territory!
http://sel.as-us.falkag.net/sel?cmd_______________________________________________
User-mode-linux-devel mailing list
User-mode-linux-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel

^ permalink raw reply	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2006-03-06 22:56 UTC | newest]

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2006-02-27 16:27         ` [uml-devel] Re: [uml-user] Crash and stability problems with 2.6.15.3-bs2 Anthony Brock
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2006-03-06 22:09               ` Blaisorblade
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2006-03-06 22:19 John Dykstra

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