[kernel] bug#154: marked as done (null ptr deref in count_active_tasks)
PA-RISC Linux bug Tracking System
daniel_frazier@hp.com
Thu, 14 Mar 2002 10:03:01 -0700 (MST)
X-PA-RISC Linux-PR-Message: closed 154
Your message dated Thu, 14 Mar 2002 09:58:30 -0700 (MST)
with message-id <20020314165830.039B6488B@dsl2.external.hp.com>
and subject line not reproduced w/2.4.17
has caused the attached bug report to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what I am
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somewhere. Please contact me immediately.)
dann frazier
(administrator, PA-RISC Linux bugs database)
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Received: (at submit) by bugs.parisc-linux.org; 24 Nov 2001 20:12:20 +0000
>From willy@www.linux.org.uk Sat Nov 24 13:12:20 2001
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Date: Sat, 24 Nov 2001 20:12:19 +0000
From: Matthew Wilcox <willy@debian.org>
To: submit@bugs.parisc-linux.org
Subject: null ptr deref in count_active_tasks
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Package: kernel
Version: 2.4.14-pa10
installing some debian packages, got this:
Kernel Fault: Code=26 regs=00000000104b9200 (Addr=0000000000000000)
YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
PSW: 00001000000001000000000000001111 Not tainted
r0-3 0000000000000000 00000000104408b0 000000001013de48 00000000104308b0
r4-7 0000000000000001 0000000000000000 00000000104308b0 0000000000000001
r8-11 00000000104308b0 fffffffffffffffd 0000000000000002 000000001044497c
r12-15 0000000000000000 00000000ffffffff 0000000000000003 00000000f0400004
r16-19 00000000104b8b40 00000000f000017c 00000000f0000174 0000000000000002
r20-23 00000000104b8000 0000000000000000 0000000000000002 000000001043b8b0
r24-27 00000000103b2230 000000001043d0b0 00000000103b2230 00000000104308b0
r28-31 0000000000002000 00000000104b91f0 00000000104b9200 00000000104398b0
sr0-3 000000000008e200 0000000000000000 0000000000000000 000000000008e200
sr4-7 0000000000000000 0000000000000000 0000000000000000 0000000000000000
IASQ: 0000000000000000 0000000000000000 IAOQ: 000000001013d948 000000001013d94c
IIR: 0ea010d3 ISR: 0000000000000000 IOR: 0000000000000000
CPU: 0 CR30: 00000000104b8000 CR31: 00000000104c0000
ORIG_R28: 0000000010223834
that's this chunk of code:
1013d940: 9e b4 20 48 cmpb,*= r20,r21,1013d96c <count_active_tasks+0x74>
1013d944: 34 16 00 04 ldi 2,r22
1013d948: 0e a0 10 d3 ldd 0(sr0,r21),r19
1013d94c: ee 60 20 12 cmpib,*=,n 0,r19,1013d95c <count_active_tasks+0x64>
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Received: (at 154-done) by bugs.parisc-linux.org; 14 Mar 2002 16:58:31 +0000
>From grundler@dsl2.external.hp.com Thu Mar 14 09:58:31 2002
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To: 154-done@bugs.parisc-linux.org
Subject: not reproduced w/2.4.17
Message-Id: <20020314165830.039B6488B@dsl2.external.hp.com>
Date: Thu, 14 Mar 2002 09:58:30 -0700 (MST)
From: grundler@dsl2.external.hp.com (Grant Grundler)
We haven't seen this problem reported on either debian-hppa
or parisc-linux recently.
It's not reproducible on 2.4.17 or 2.4.18.
grant