kmalloc() of 4MB causes "kernel BUG at slab.c:1542!"

From: Rick Richardson (rick@remotepoint.com)
Date: Wed Jan 17 2001 - 14:54:20 EST

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[please cc me on any responses]

Environment: 2.4.0 released, Pentium III with 256MB's of RAM.
Problem: kmalloc() of 4M causes kernel message "kernel BUG at slab.c:1542"

Here is the dmesg output:

kernel BUG at slab.c:1542!
invalid operand: 0000
CPU: 0
EIP: 0010:[<c0129b84>]
EFLAGS: 00010282
eax: 0000001b ebx: d2922000 ecx: cdf6c000 edx: 00000000
esi: 00000007 edi: 00000000 ebp: 0806f124 esp: cb1bdef4
ds: 0018 es: 0018 ss: 0018
Process insmod (pid: 24167, stackpage=cb1bd000)
Stack: c02148eb c021498b 00000606 00000286 00000001 c02a75ec 00000029 d2922000
00000000 d2922083 01000000 00000007 d29221c0 01000000 c0116c65 00000000
cc8a6000 0000020c cc8a7000 00000060 ffffffea 00000003 c2be5420 00000060
Call Trace: [<d2922000>] [<d2922083>] [<d29221c0>] [<c0116c65>] [<d2920000>] [<d2922060>] [<c0109057>]

Code: 0f 0b 83 c4 0c 31 c0 83 c4 10 5b 5e c3 eb 0d 90 90 90 90 90

Repeat by:
Compile simple driver attached.
$ insmod test.o Amt=4096

-- Rick Richardson rick@remotepoint.com http://home.mn.rr.com/richardsons/ Twins Cities traffic animations are at http://members.nbci.com/tctraffic/#1

Most Minnesotans think Global Warming is a good thing.

text/plain attachment: test.c

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Next message: Marian Jancar: "Strange QoS problem"
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