Messages in this thread | | | Date | Wed, 30 Jun 2004 14:29:48 -0700 | From | "Randy.Dunlap" <> | Subject | Re: Crash when loading a module (without executing any code of the module!) |
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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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