Messages in this thread | | | Date | Mon, 05 Jul 2004 14:48:01 +0200 | From | "Michael Tasche" <> | Subject | Re: Crash when loading a module (without executing any code of the module!) |
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Hi,
On Fri, 2 Jul 2004 08:49:15 -0700, Randy.Dunlap <rddunlap@osdl.org> wrote:
> On Fri, 2 Jul 2004 17:15:29 +0200 Michael Tasche wrote: > > | Hi, > | > | attached you will find the .configs of the two kernel-trees. > > Not. and there was a part 2 of the request also: > > | >Can you post the module source code, or a subset of it that causes > | >the problem? > > My modules load OK, so without some broken source code, it's > gonna be tough.
we are just preparing a down stripped driver source for you.
Well, we do not think to solve the problem with the source, because the the crash occurs, before any of our source-code is executed.
Again the problem: If our linux indepedant firmware-loader object is generated with "kbuild" on the other kernel-tree, we get the crash, if we build both objects against the same kernel-tree, everything works fine.
I have attached the .configs again, sorry my fault.
- Michael
> > > | -Michael > | > | On Wed, 30 Jun 2004 14:29:48 -0700, Randy.Dunlap <rddunlap@osdl.org> > wrote: > | > > | >Hi- > | > > | >On Wed, 30 Jun 2004 15:41:27 +0200 Michael Tasche wrote: > | >| Hi, > | >| currently I'm developping a small kernel module for a hardware > (which was developped by a friend of mine), which is > | >| supposed to load a firmware onto a PCI-card. > | >| > | >| The development is done together with the friend, who's developping > the firmware. > | >| We tried the following: > | >| He compiled a kernel-independent object (containing the firmware) > on his system using kbuild > | >| (Dual-AthlonMP, SuSE 8.2 with kernel.org-kernel 2.6.3, > module-init-tools 0.9.14-pre2, gcc 3.3.1, > | >| ld 2.14.90.0.5 20030722). > | >| Afterwards I tried to link it to my kernel-module (using the same > kbuild makefile with > | >| firmware.o_shipped) on my machine (Fedora2, 2.6.5-3.1smp, > module-init-tools 3.0-pre10, gcc 3.3.3, ld 2.15.90.0.3 > | >| 20040415). > | >| > | >| This is what happened: > | >| > | >| Unable to handle kernel paging request at virtual address 82d90700 > | >| printing eip: > | >| 02135657 > | >| *pde = 00000000 > | >| Oops: 0002 [#1] > | >| PREEMPT SMP > | >| CPU: 1 > | >| EIP: 0060:[<02135657>] Not tainted > | >| EFLAGS: 00010246 (2.6.5-3.1smp) > | >| EIP is at module_unload_init+0xa/0x4d > | >| eax: 82d90700 ebx: 82c2387c ecx: 82d8f600 edx: 00000000 > | >| esi: 82c38f33 edi: 82c40027 ebp: 000005f0 esp: 763c3f38 > | >| ds: 007b es: 007b ss: 0068 > | >| Process insmod (pid: 1812, threadinfo=763c2000 task=7f3c60b0) > | >| Stack: 02136dc0 7864cc40 8282a000 00000000 82d8f600 00000000 > 00000000 00000000 > | >| 00000000 00000000 0000000b 00000000 00000010 00000000 > 00000000 00000009 > | >| 00000025 00000024 00000026 82c3829c 82c23727 82a94000 > 0856a008 763c3fc4 > | >| Call Trace: > | >| [<02136dc0>] load_module+0x53e/0x7fa > | >| [<021370da>] sys_init_module+0x5e/0x293 > | >| > | >| Code: 89 81 00 11 00 00 89 81 04 11 00 00 89 c8 c7 80 00 01 00 00 > | > > | >Some of those stack addresses look odd to me. > | >Please send me your kernel .config file. > | > > | >| What puzzles me, is that I don't see any of my code in the > calltrace. I had a look into the > | >| kernel-code and it seems to crash, before it even jumps into my > code. What am I missing? > | >| By the way, everything works fine, if I compile the entire module > on my machine. > | >| Some more testing showed, that we do also expierence a crash, if we > do everything vice-versa. > | >| > | >| Regards, > | >| Michael > | >| > | >| P.S: This was also posted by the driver developer to > comp.os.linux.development.system. > | > > | >Can you post the module source code, or a subset of it that causes > | >the problem? > | > > | >-- > > > -- > ~Randy > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" > in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ >
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