[Click] oops on click-uninstall

[Beyers Cronje]

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, last night's Click CVS version, e1000-7.x
polling driver. Unfortunately the click 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