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SubjectRe: lockup with parport_pc on 2.4.0-test10-pre1]
Kernel test10-pre2, Dual Xeon PII(400 mhz), Mandrake 7.1, microde
updates enabled

Mounting my zipdrive(IMM) will result in something like this:
Sysrq does not work, machine is completely dead after 20-40 seconds.The
usual progession is CPU's lockup, modprobe dies, kflushed and syslogd
follow shortly afterwards.

NMI Watchdog detected LOCKUP on CPU0, registers:
CPU: 0
EIP: 0010:[<c01d7243>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00200086
eax: 00002101 ebx: 00200202 ecx: 00000001 edx: 001f8f79
esi: 00002101 edi: 00000084 ebp: 00089e60 esp: c60e7e98
ds: 0018 es: 0018 ss: 0018
Process modprobe (pid: 1207, stackpage=c60e7000)
Stack: c7eb4cc0 00000001 c0163bfa 00002101 c7eb4cc0 00000000 00000000
c60e7f0c
c0163db1 00000000 c7eb4cc0 c7eb4cc0 00000001 0000000c 00001000
c01342a2
00000000 00000001 c60e7f0c c7fa5a64 c1197a7c c7c7da1c 00000000
00001000
Call Trace: [<c0163bfa>] [<c0163db1>] [<c01342a2>] [<c0153773>]
[<c01530a8>] [<c
Code: 80 3d c4 67 21 c0 00 f3 90 7e f5 e9 76 bd f8 ff 80 3d 34 2a

>>EIP; c01d7243 <stext_lock+3223/81e0> <=====
Trace; c0163bfa <generic_make_request+ae/110>
Trace; c0163db1 <ll_rw_block+155/1c4>
Trace; c01342a2 <block_read_full_page+1aa/1f4>
Trace; c0153773 <ext2_readpage+f/14>
Trace; c01530a8 <ext2_get_block+0/4d0>
Code; c01d7243 <stext_lock+3223/81e0>
00000000 <_EIP>:
Code; c01d7243 <stext_lock+3223/81e0> <=====
0: 80 3d c4 67 21 c0 00 cmpb $0x0,0xc02167c4 <=====
Code; c01d724a <stext_lock+322a/81e0>
7: f3 90 repz nop
Code; c01d724c <stext_lock+322c/81e0>
9: 7e f5 jle 0 <_EIP>
Code; c01d724e <stext_lock+322e/81e0>
b: e9 76 bd f8 ff jmp fff8bd86 <_EIP+0xfff8bd86>
c0162fc9 <blk_get_queue+9/54>
Code; c01d7253 <stext_lock+3233/81e0>
10: 80 3d 34 2a 00 00 00 cmpb $0x0,0x2a34

NMI Watchdog detected LOCKUP on CPU0, registers:
CPU: 0
EIP: 0010:[<c01d7243>]
EFLAGS: 00200086
eax: 00002105 ebx: 00200206 ecx: 00000005 edx: 00bc1f49
esi: 00002105 edi: 00000084 ebp: 00000010 esp: c1263f7c
ds: 0018 es: 0018 ss: 0018
Process kflushd (pid: 4, stackpage=c1263000)
Stack: c4f042c0 00000001 c0163bfa 00002105 c4f042c0 00000000 00000001
c1263fd8
c0163db1 00000001 c4f042c0 00000029 c7a9b380 00000001 c1262000
c013560a
Warning (Oops_read): Code line not seen, dumping what data is available

>>EIP; c01d7243 <stext_lock+3223/81e0> <=====

If anyone has a patch to test let me know....I'll try anything once,
twice if I like it...:=)
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