[BUG] wrt d_count going negative

From: Blu3Viper (david@killerlabs.com)
Date: Fri Apr 07 2000 - 18:16:40 EST


(possibly fixed in pre4-4 or pre4-5)

while doing my usual check for [ab]normal things i ran across this a few
minutes ago:

root 3 0.0 0.0 0 0 ? Z 05:07 0:02 [kswapd <defunct>

(syslog)
ide_dmaproc: chipset supported ide_dma_lostirq func only: 13
hda: lost interrupt
Negative d_count (-1) for local/share
kernel BUG at dcache.c:172!
invalid operand: 0000
CPU: 0
EIP: 0010:[<c013def9>]
EFLAGS: 00010282
eax: 0000001c ebx: c4952100 ecx: c028f1dc edx: c028f1dc
esi: ffffffff edi: 00000000 ebp: 00000047 esp: cbfc7f80
ds: 0018 es: 0018 ss: 0018

Process kswapd (pid: 3, stackpage=cbfc7000)
Stack: c023ede7 c023ee62 000000ac c4952100 c0982600 c013e030 c4952100 00000019
       00000004 00000004 c0290ac0 c013e2ea 0000005e c012a326 00000004 00000004
       c0290ac0 c0290ac0 c0290ac0 cbfc622d cbfc6000 c012a3e7 00000004 c0290ac0
Call Trace: [tvecs+24931/61372] [tvecs+25054/61372] [prune_dcache+208/240]
            [shrink_dcache_memory+26/48] [do_try_to_free_pages+70/144]
            [kswapd+119/244] [kernel_thread+40/56]
Code: 0f 0b 83 c4 0c 89 f6 5b 5e c3 90 53 8b 5c 24 08 8d 43 18 39

This is a pre4-3 kernel.

-d

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