[Click] oops on click-uninstall

[Eddie Kohler]

I wonder if Click's configuration/compilation strategy was NOT using frame 
pointers or soemthing.  Do let us know what the results of your experiment 
are!  Thanks as always,

Eddie



Beyers Cronje wrote:
> Hi Eddie,
> 
> Sorry for only giving feedback on this issue now, been moving house over 
> 800km from where I used to stay. Now I have a nice view from my office 
> to the beatiful South African ocean :)
> 
> I got it working in the end. I started with a fresh Click CVS version, 
> and fresh 2.6.16.13 <http://2.6.16.13> kernel and disable the following 
> kernel Debug options that was enabled before:
> 
> Debug Memory Allocations
> Debug VM
> Compile the kernel with frame pointers
> 
> After that everything worked perfectly as before. I'm not sure if it was 
> the fresh click installation or disabling the above debug options that 
> solved the problem, but I'm fairly certain click wasnt using an older 
> proclikefs when I was strugling as I remember I manually delete 
> proclikefs together with a make clean on click at some stage during the 
> struggles. Once we've settled into the new home I will verify if 
> enabling the above debug options introduces the problem.
> 
> Cheers
> 
> Beyers
> 
> 
> On 2/21/07, * Eddie Kohler* <kohler at cs.ucla.edu 
> <mailto:kohler at cs.ucla.edu>> wrote:
> 
>     Hi Beyers,
> 
>     Are you still getting this error?  I have not seen anything like it, at
>     least on my laptop, and others haven't seen problems either.  I wonder
>     if there could possibly be something like using an older proclikefs
>     with
>     a newer kernel module.  Almost certainly not but....
> 
>     Eddie
> 
> 
>     Beyers Cronje wrote:
>      > Hi guys,
>      >
>      > This is a start on an attempt to narrow down crashes on
>      > click-uninstall with proclikefs. It seems I can reproduce this crash
>      > now. Unfortunately I dont have a console connection to the server so
>      > I'm left with what's reported in syslog. The one time I did have
>      > console access it seemed the offending function was -
>      > proclikefs_put_super
>      >
>      > Currently running 2.6.19.2 <http://2.6.19.2>, last night's Click
>     CVS version, e1000-7.x
>      > polling driver. Unfortunately the click 2.6.19.2
>     <http://2.6.19.2> patch does not patch
>      > files enabled by CONFIG_LOCKDEP, I will correct this and enable full
>      > spinlock debugging.
>      >
>      > As a start this is what was logged in syslog:
>      >
>      > Feb 16 10:38:46 crovanto2850 kernel: Slab corruption:
>     start=edc229d0, len=64
>      > Feb 16 10:38:46 crovanto2850 kernel: Redzone: 0x5a2cf071/0x5a2cf071.
>      > Feb 16 10:38:46 crovanto2850 kernel: Last user:
>      > [<fae85a1e>](_ZdaPv+0x6a/0x9a [click])
>      > Feb 16 10:38:46 crovanto2850 kernel: 000: 6b 6b 6b 6b 6b 6b 6b 6b 6b
>      > 6b 6b 6b 64 81 7f f4
>      > Feb 16 10:38:46 crovanto2850 kernel: Prev obj: start=edc22984, len=64
>      > Feb 16 10:38:46 crovanto2850 kernel: Redzone: 0x170fc2a5/0x170fc2a5.
>      > Feb 16 10:38:46 crovanto2850 kernel: Last user:
>      > [<fae85ec1>](_Znwj+0x21/0x70 [click])
>      > Feb 16 10:38:46 crovanto2850 kernel: 000: 7f 3f ff ff 58 58 58 69 10
>      > 00 00 00 d4 e5 ea ed
>      > Feb 16 10:38:46 crovanto2850 kernel: 010: 30 fc ed ee 01 00 00 00 20
>      > 00 00 00 14 00 00 00
>      > Feb 16 10:38:46 crovanto2850 kernel: Next obj: start=edc22a1c, len=64
>      > Feb 16 10:38:46 crovanto2850 kernel: Redzone: 0x5a2cf071/0x5a2cf071.
>      > Feb 16 10:38:46 crovanto2850 kernel: Last user:
>      > [<fae85b3c>](click_lfree+0x22/0x24 [click])
>      > Feb 16 10:38:46 crovanto2850 kernel: 000: 6b 6b 6b 6b 6b 6b 6b 6b 6b
>      > 6b 6b 6b 6b 6b 6b 6b
>      > Feb 16 10:38:46 crovanto2850 kernel: 010: 6b 6b 6b 6b 6b 6b 6b 6b 6b
>      > 6b 6b 6b 6b 6b 6b 6b
>      > Feb 16 10:40:40 crovanto2850 kernel: e1000_poll_off
>      > Feb 16 10:40:40 crovanto2850 kernel: Slab corruption:
>     start=edc229d0, len=64
>      > Feb 16 10:40:40 crovanto2850 kernel: Redzone: 0x5a2cf071/0x5a2cf071.
>      > Feb 16 10:40:40 crovanto2850 kernel: Last user:
>      > [<fae858de>](_ZdlPv+0x6a/0x9a [click])
>      > Feb 16 10:40:40 crovanto2850 kernel: 000: 6b 6b 6b 6b 6b 6b 6b 6b 6b
>      > 6b 6b 6b 90 db 8d f0
>      > Feb 16 10:40:40 crovanto2850 kernel: Prev obj: start=edc22984,
>     len=64
>      > Feb 16 10:40:40 crovanto2850 kernel: Redzone: 0x5a2cf071/0x5a2cf071.
>      > Feb 16 10:40:40 crovanto2850 kernel: Last user:
>      > [<c01a1981>](free_rb_tree_fname+0x41/0x82)
>      > Feb 16 10:40:40 crovanto2850 kernel: 000: 6b 6b 6b 6b 6b 6b 6b 6b 6b
>      > 6b 6b 6b 6b 6b 6b 6b
>      > Feb 16 10:40:40 crovanto2850 kernel: 010: 6b 6b 6b 6b 6b 6b 6b 6b 6b
>      > 6b 6b 6b 6b 6b 6b 6b
>      > Feb 16 10:40:40 crovanto2850 kernel: Next obj: start=edc22a1c, len=64
>      > Feb 16 10:40:40 crovanto2850 kernel: Redzone: 0x5a2cf071/0x5a2cf071.
>      > Feb 16 10:40:40 crovanto2850 kernel: Last user:
>      > [<fae858de>](_ZdlPv+0x6a/0x9a [click])
>      > Feb 16 10:40:40 crovanto2850 kernel: 000: 6b 6b 6b 6b 6b 6b 6b 6b 6b
>      > 6b 6b 6b 6b 6b 6b 6b
>      > Feb 16 10:40:40 crovanto2850 kernel: 010: 6b 6b 6b 6b 6b 6b 6b 6b 6b
>      > 6b 6b 6b 6b 6b 6b 6b
>      > Feb 16 10:40:40 crovanto2850 kernel: device eth2 left promiscuous
>     mode
>      > Feb 16 10:40:40 crovanto2850 kernel: click: stopping router
>     thread pid 14206
>      > Feb 16 10:40:40 crovanto2850 kernel: poll fb05c3a0:
>     680928/1952766090
>      > freed, 661510/1857091501 allocated
>      > Feb 16 10:40:40 crovanto2850 kernel: click module exiting
>      > Feb 16 10:40:41 crovanto2850 kernel: list_del corruption. prev->next
>      > should be f5dac820, but was 6b6b6b6b
>      >
>      > Cheers
>      >
>      > Beyers
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