Hi
Machine is HP j6000.
CPU(s): 2 x PA8700 (PCX-W2) at 750.000000 MHz
gcc version 4.3.3 (Gentoo 4.3.3-r2 p1.1, pie-10.1.5)
Machine hangs before starting rc scripts, but SysRq and C-A-Del work.
All tasks are at __schedule+0x268/0x7bc:
__schedule is at 0x278 in sched.o
plus 268 it is 0x4e0
454: 2b 60 00 00 addil L%0,dp,r1
454: R_PARISC_DPREL21L rt_sched_class
458: 34 24 00 00 ldo 0(r1),r4
458: R_PARISC_DPREL14R rt_sched_class
45c: 48 96 00 28 ldw 14(r4),r22
460: 08 05 02 5a copy r5,r26
464: e6 c0 20 00 be,l 0(sr4,r22),sr0,r31
468: 08 1f 02 42 copy r31,rp
46c: cb 3c 3f d7 movb,=,n ret0,r25,45c <__schedule+0x1e4>
470: 0c 80 10 84 ldw 0(r4),r4
474: 80 d9 28 da cmpb,=,n r25,r6,8e8 <__schedule+0x670>
478: 68 b9 08 08 stw r25,404(r5)
47c: 48 bc 00 70 ldw 38(r5),ret0
480: 48 bd 00 78 ldw 3c(r5),ret1
484: b7 bd 00 02 addi 1,ret1,ret1
488: 08 1c 07 1c add,c ret0,r0,ret0
48c: 68 bc 00 70 stw ret0,38(r5)
490: 68 bd 00 78 stw ret1,3c(r5)
494: 0d a0 10 93 ldw 0(r13),r19
498: 36 73 00 02 ldo 1(r19),r19
49c: 0d b3 12 80 stw r19,0(r13)
4a0: 4b 34 01 b0 ldw d8(r25),r20
4a4: 86 80 22 c8 cmpib,= 0,r20,610 <__schedule+0x398>
4a8: 48 d5 01 b8 ldw dc(r6),r21
4ac: 82 95 20 3a cmpb,=,n r21,r20,4d0 <__schedule+0x258>
4b0: 4a 9c 00 48 ldw 24(r20),ret0
4b4: 22 60 0e 01 ldil L%-10000000,r19
4b8: 0a 7c 0a 3c add,l ret0,r19,ret0
4bc: 03 3c 18 40 mtctl ret0,tr1
4c0: 4a 93 02 d0 ldw 168(r20),r19
4c4: 00 13 d8 20 mtsp r19,sr3
4c8: d6 73 08 21 depw,z r19,30,31,r19
4cc: 01 13 18 40 mtctl r19,pidr1
4d0: 48 dc 01 b0 ldw d8(r6),ret0
4d4: 87 80 22 52 cmpib,=,n 0,ret0,604 <__schedule+0x38c>
4d8: e8 00 a0 00 b,l 4e0 <__schedule+0x268>,rp
4d8: R_PARISC_PCREL22F _switch_to
4dc: 08 06 02 5a copy r6,r26
4e0: 08 11 02 44 copy r17,r4
4e4: 03 c0 08 b3 mfctl tr6,r19
4e8: 4a 74 00 20 ldw 10(r19),r20
4ec: 08 1c 02 59 copy ret0,r25
4f0: 0e 54 20 9a ldw,s r20(r18),r26
4f4: e8 00 a0 00 b,l 4fc <__schedule+0x284>,rp
4f4: R_PARISC_PCREL22F finish_task_switch
4f8: 0b 44 0a 3a add,l r4,r26,r26
4fc: 03 c0 08 bc mfctl tr6,ret0
500: 4b 8a 00 20 ldw 10(ret0),r10
504: 0e 4a 20 93 ldw,s r10(r18),r19
508: 0a 64 0a 25 add,l r4,r19,r5
50c: 03 c0 08 bc mfctl tr6,ret0
510: 0f 80 10 93 ldw 0(ret0),r19
514: 4a 74 00 28 ldw 14(r19),r20
518: 8e 80 60 20 cmpib,> 0,r20,530 <__schedule+0x2b8>
51c: 48 62 3f d9 ldw -14(r3),rp
520: e8 00 a0 00 b,l 528 <__schedule+0x2b0>,rp
520: R_PARISC_PCREL22F __reacquire_kernel_lock
On Wed, Apr 08, 2009 at 05:03:04PM +0400, Alexander Beregalov wrote:
> Hi
>
> Machine is HP j6000.
> CPU(s): 2 x PA8700 (PCX-W2) at 750.000000 MHz
>
> gcc version 4.3.3 (Gentoo 4.3.3-r2 p1.1, pie-10.1.5)
>
>
> Machine hangs before starting rc scripts, but SysRq and C-A-Del work.
>
> All tasks are at __schedule+0x268/0x7bc:
>
.config?
2009/4/9 Kyle McMartin <[email protected]>:
> On Wed, Apr 08, 2009 at 05:03:04PM +0400, Alexander Beregalov wrote:
>> Hi
>>
>> Machine is HP j6000.
>> CPU(s): 2 x PA8700 (PCX-W2) at 750.000000 MHz
>>
>> gcc version 4.3.3 (Gentoo 4.3.3-r2 p1.1, pie-10.1.5)
>>
>>
>> Machine hangs before starting rc scripts, but SysRq and C-A-Del work.
>>
>> All tasks are at __schedule+0x268/0x7bc:
>>
>
> .config?
Sorry, attached.
On Thu, Apr 09, 2009 at 12:46:15PM +0400, Alexander Beregalov wrote:
> 2009/4/9 Kyle McMartin <[email protected]>:
> > On Wed, Apr 08, 2009 at 05:03:04PM +0400, Alexander Beregalov wrote:
> >> Hi
> >>
> >> Machine is HP j6000.
> >> CPU(s): 2 x PA8700 (PCX-W2) at 750.000000 MHz
> >>
> >> gcc version 4.3.3 (Gentoo 4.3.3-r2 p1.1, pie-10.1.5)
> >>
> >>
> >> Machine hangs before starting rc scripts, but SysRq and C-A-Del work.
> >>
> >> All tasks are at __schedule+0x268/0x7bc:
> >>
> >
> > .config?
>
> Sorry, attached.
Thanks, I swapped disks into my j6700 and will try to reproduce.
regards, Kyle
2009/4/9 Kyle McMartin <[email protected]>:
> On Thu, Apr 09, 2009 at 12:46:15PM +0400, Alexander Beregalov wrote:
>> 2009/4/9 Kyle McMartin <[email protected]>:
>> > On Wed, Apr 08, 2009 at 05:03:04PM +0400, Alexander Beregalov wrote:
>> >> Hi
>> >>
>> >> Machine is HP j6000.
>> >> CPU(s): 2 x PA8700 (PCX-W2) at 750.000000 MHz
>> >>
>> >> gcc version 4.3.3 (Gentoo 4.3.3-r2 p1.1, pie-10.1.5)
>> >>
>> >>
>> >> Machine hangs before starting rc scripts, but SysRq and C-A-Del work.
>> >>
>> >> All tasks are at __schedule+0x268/0x7bc:
>> >>
>> >
>> > .config?
>>
>> Sorry, attached.
>
> Thanks, I swapped disks into my j6700 and will try to reproduce.
It seems the problem is the same as mentioned here:
http://marc.info/?l=linux-kernel&m=123920746830420&w=2
The patch fixes the issue.
James?
The same problem on two of my hosts: x86_64 with LSI SAS MegaRAID
and parisc with SYM53C8XX_2
On Wed, 2009-04-15 at 16:49 +0400, Alexander Beregalov wrote:
> 2009/4/9 Kyle McMartin <[email protected]>:
> > On Thu, Apr 09, 2009 at 12:46:15PM +0400, Alexander Beregalov wrote:
> >> 2009/4/9 Kyle McMartin <[email protected]>:
> >> > On Wed, Apr 08, 2009 at 05:03:04PM +0400, Alexander Beregalov wrote:
> >> >> Hi
> >> >>
> >> >> Machine is HP j6000.
> >> >> CPU(s): 2 x PA8700 (PCX-W2) at 750.000000 MHz
> >> >>
> >> >> gcc version 4.3.3 (Gentoo 4.3.3-r2 p1.1, pie-10.1.5)
> >> >>
> >> >>
> >> >> Machine hangs before starting rc scripts, but SysRq and C-A-Del work.
> >> >>
> >> >> All tasks are at __schedule+0x268/0x7bc:
> >> >>
> >> >
> >> > .config?
> >>
> >> Sorry, attached.
> >
> > Thanks, I swapped disks into my j6700 and will try to reproduce.
>
> It seems the problem is the same as mentioned here:
> http://marc.info/?l=linux-kernel&m=123920746830420&w=2
>
> The patch fixes the issue.
>
> James?
> The same problem on two of my hosts: x86_64 with LSI SAS MegaRAID
> and parisc with SYM53C8XX_2
Well, I can tell you why I don't see the problem: My parisc system has
modular SCSI, so it doesn't really test out the async system that well
(it was designed more for monolithic kernels).
On the specific patch in the email, it seems reasonable, but I think it
might interfere with the sd probe async calls, so what you might end up
losing a rache where the host fully scanned, but the sd driver not
attached.
The root cause of the problem is that we now have two different async
mechanisms in SCSI: our original one for host scanning and the new one
for sd attachment.
James