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Assertion failure in 2.2.19



Hi,

I found the following in the logs of a server that crashed:

Mar 19 14:09:28 sc4 kernel: Assertion failure in ext3_free_blocks() at
balloc.c line 358: "bh->b_committed_data != NULL"
Mar 19 14:09:28 sc4 kernel: Unable to handle kernel NULL pointer
dereference at virtual address 00000000
Mar 19 14:09:28 sc4 kernel: current->tss.cr3 = 39b8b000, %%cr3 =
39b8b000
Mar 19 14:09:28 sc4 kernel: *pde = 00000000
Mar 19 14:09:28 sc4 kernel: Oops: 0002
Mar 19 14:09:28 sc4 kernel: CPU:    0
Mar 19 14:09:28 sc4 kernel: EIP:    0010:[ext3_free_blocks+616/772]
Mar 19 14:09:28 sc4 kernel: EFLAGS: 00010282
Mar 19 14:09:28 sc4 kernel: eax: 00000060   ebx: c009c600   ecx:
ffffffff   edx: 0000003c
Mar 19 14:09:28 sc4 kernel: esi: 00000adc   edi: 00000000   ebp:
d57773a0   esp: f972de58

Searching through the ext3 mailing list I found the following post which
had a similar experience:

http://www.redhat.com/mailing-lists/ext3-users/msg02666.html

However, there was no reply to his query.

The server in question runs squid which handles high volume of traffic
every day.

Debian 2.2 (potato)
kernel 2.2.19
ext3-0.0.7
1024 MB RAM
Pentium III 850 Mhz
squid 2.4.STABLE4


Any help is much appreciated. Btw, would changing the kernel to 2.4.x
help in this situation?


Rgds,
Meng Kuan





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