From: Shivu V <shivu_sv2004@yahoo.com>
To: linux-kernel@vger.kernel.org
Subject: Re: oops from my test driver at poll_wait (__pollwait from select.c)
Date: Sun, 4 Jan 2004 23:05:31 -0800 (PST) [thread overview]
Message-ID: <20040105070531.74437.qmail@web21501.mail.yahoo.com> (raw)
In-Reply-To: <20040104220859.22913.qmail@web21508.mail.yahoo.com>
I just tested it on kernel version 2.4.21-4.ELsmp and
it works fine.
-Shivu
--- Shivu V <shivu_sv2004@yahoo.com> wrote:
> And the Kernel version is : 2.4.18-14
>
> -Shivu
>
> --- Shivu V <shivu_sv2004@yahoo.com> wrote:
> > Hello,
> >
> > I am a newbie in driver development. In one of my
> > test
> > driver, I am getting the oops at poll_wait. The
> > ksymoops o/p is as follows :
> >
> > Unable to handle kernel NULL pointer dereference
> at
> > virtual address 00000005
> > c01190f5
> > *pde = 00000000
> > Oops: 0002
> > CPU: 0
> > EIP: 0010:[<c01190f5>] Not tainted
> > Using defaults from ksymoops -t elf32-i386 -a i386
> > EFLAGS: 00010046
> > eax: f7ae0f18 ebx: 00000001 ecx: f6d40014
> edx:
> > f6d4000c
> > esi: 00000246 edi: 00000000 ebp: f6d47ef4
> esp:
> > f6d47ec0
> > ds: 0018 es: 0018 ss: 0018
> > Process test (pid: 1228, stackpage=f6d47000)
> > Stack: f72b3520 f7ae0e80 f8e144c6 f6d8f0e0
> f7ae0f18
> > f6d47fa8 f6d47f04 00000000
> > c012bee9 f6f513c0 f6d8f0e0 00000000 f6d47fa8
> > f6d47f24 f8e14987 f6d8f0e0
> > f6d47fa8 420d2220 f6d93900 c01169f8 00000212
> > 00001000 00000145 f6d41000
> > Call Trace: [<f8e144c6>] daemon_poll [mytest] 0x78
> > (0xf6d47ec8))
> > [<c012bee9>] handle_mm_fault [kernel] 0x89
> > (0xf6d47ee0))
> > [<f8e14987>] mytest_poll [mytest] 0x6d
> (0xf6d47ef8))
> > [<c01169f8>] do_page_fault [kernel] 0x138
> > (0xf6d47f0c))
> > [<c0150255>] do_pollfd [kernel] 0x95 (0xf6d47f28))
> > [<c015035f>] do_pollfd [kernel] 0x19f
> (0xf6d47f44))
> > [<c01504d3>] sys_poll [kernel] 0x163 (0xf6d47f78))
> > [<c010910f>] system_call [kernel] 0x33
> (0xf6d47fc0))
> > Code: 89 4b 04 89 5a 08 89 41 04 89 08 56 9d 8b 1c
> > 24
> > 8b 74 24 04
> >
> >
> > >>EIP; c01190f5 <add_wait_queue+15/30> <=====
> >
> > >>eax; f7ae0f18 <_end+3770f398/384564e0>
> > >>ecx; f6d40014 <_end+3696e494/384564e0>
> > >>edx; f6d4000c <_end+3696e48c/384564e0>
> > >>ebp; f6d47ef4 <_end+36976374/384564e0>
> > >>esp; f6d47ec0 <_end+36976340/384564e0>
> >
> > Trace; f8e144c6 <[mytest]daemon_poll+78/d6>
> > Trace; c012bee9 <handle_mm_fault+89/160>
> > Trace; f8e14987 <[mytest]mytest_poll+6d/96>
> > Trace; c01169f8 <do_page_fault+138/4cf>
> > Trace; c0150255 <do_pollfd+95/a0>
> > Trace; c015035f <do_poll+ff/110>
> > Trace; c01504d3 <sys_poll+163/300>
> > Trace; c010910f <system_call+33/38>
> >
> > Code; c01190f5 <add_wait_queue+15/30>
> > 00000000 <_EIP>:
> > Code; c01190f5 <add_wait_queue+15/30> <=====
> > 0: 89 4b 04 mov
> > %ecx,0x4(%ebx)
> > <=====
> > Code; c01190f8 <add_wait_queue+18/30>
> > 3: 89 5a 08 mov
> > %ebx,0x8(%edx)
> > Code; c01190fb <add_wait_queue+1b/30>
> > 6: 89 41 04 mov
> > %eax,0x4(%ecx)
> > Code; c01190fe <add_wait_queue+1e/30>
> > 9: 89 08 mov
> %ecx,(%eax)
> > Code; c0119100 <add_wait_queue+20/30>
> > b: 56 push %esi
> > Code; c0119101 <add_wait_queue+21/30>
> > c: 9d popf Code;
> > c0119102
> > <add_wait_queue+22/30>
> > d: 8b 1c 24 mov
> > (%esp,1),%ebx
> > Code; c0119105 <add_wait_queue+25/30>
> > 10: 8b 74 24 04 mov
> > 0x4(%esp,1),%esi
> >
> >
> > 2 warnings and 5 errors issued. Results may not
> be
> > reliable.
> >
> >
> >
> > Any ideas ??
> >
> > Thanks
> > -Shivu
> >
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next prev parent reply other threads:[~2004-01-05 7:05 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-04 22:08 Shivu V
2004-01-05 7:05 ` Shivu V [this message]
-- strict thread matches above, loose matches on Subject: below --
2004-01-04 22:05 Shivu V
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