Messages in this thread |  | | Date | Thu, 10 May 2001 15:13:13 -0500 | From | SodaPop <> | Subject | null pointer dereference in ibmtr |
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When inserting the ibmtr.o module in any of the 2.4 series kernels, I get a null pointer crash. Latest try was 2.4.4. Ksymoops:
Unable to handle kernel paging request at virtual address 7a000018 c012861e *pde = 00000000 Oops: 0000 CPU: 0 EIP: 0010:[<c012861e>] Using defaults from ksymoops -t elf32-i386 -a i386 EFLAGS: 00010246 eax: 00000170 ebx: 00000001 ecx: 00000170 edx: 00000000 esi: c1321080 edi: c13210dc ebp: c9ca3800 esp: c0203ee8 ds: 0018 es: 0018 ss: 0018 Process swapper (pid: 0, stackpage=c02030000) Stack: c0188efd c1321080 00000000 c0188f37 c1321080 c1321080 c0189067 c1321080 c1321080 c1321080 c01905c3 c1321080 c1321080 c9ff8ca0 c01903bb c1321080 c9ca3800 c01ff12c c1321080 c01ff12c c0189067 c1321080 c9ca3800 c01ff12c Call Trace: [<c0188efd>] [<c0188f37>] [<c0189067>] [<c01905c3>] [<c01903bb>] [<c018c219>] [<c018c3f5>] [<c0115b7e>] [<c0107ef9>] [<c0105160>] [<c0106be0>] [<c0105160>] [<c0100018>] [<c0105183>] [<c01051de>] [<c0105000>] [<c0100198>] Code: 8b 41 18 85 c0 7c 11 ff 49 14 0f 94 c0 84 c0 74 07 89 c8 e8
>>EIP; c012861e <__free_pages+2/1c> <===== Trace; c0188efd <skb_release_data+3d/6c> Trace; c0188f37 <kfree_skbmem+b/54> Trace; c0189067 <__kfree_skb+e7/f0> Trace; c01905c3 <snap_rcv+9b/a4> Trace; c01903bb <p8022_rcv+6b/98> Trace; c018c219 <deliver_to_old_ones+71/80> Trace; c018c3f5 <net_rx_action+11d/200> Trace; c0115b7e <do_softirq+4a/6c> Trace; c0107ef9 <do_IRQ+a1/b4> Trace; c0105160 <default_idle+0/28> Trace; c0106be0 <ret_from_intr+0/20> Trace; c0105160 <default_idle+0/28> Trace; c0100018 <startup_32+18/a5> Trace; c0105183 <default_idle+23/28> Trace; c01051de <cpu_idle+36/4c> Trace; c0105000 <init+0/150> Trace; c0100198 <L6+0/2> Code; c012861e <__free_pages+2/1c> 00000000 <_EIP>: Code; c012861e <__free_pages+2/1c> <===== 0: 8b 41 18 movl 0x18(%ecx),%eax <===== Code; c0128621 <__free_pages+5/1c> 3: 85 c0 testl %eax,%eax Code; c0128623 <__free_pages+7/1c> 5: 7c 11 jl 18 <_EIP+0x18> c0128636 <__free_pages+1a/1c> Code; c0128625 <__free_pages+9/1c> 7: ff 49 14 decl 0x14(%ecx) Code; c0128628 <__free_pages+c/1c> a: 0f 94 c0 sete %al Code; c012862b <__free_pages+f/1c> d: 84 c0 testb %al,%al Code; c012862d <__free_pages+11/1c> f: 74 07 je 18 <_EIP+0x18> c0128636 <__free_pages+1a/1c> Code; c012862f <__free_pages+13/1c> 11: 89 c8 movl %ecx,%eax Code; c0128631 <__free_pages+15/1c> 13: e8 00 00 00 00 call 18 <_EIP+0x18> c0128636 <__free_pages+1a/1c>
Cpu info: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 3 model name : Pentium II (Klamath) stepping : 4 cpu MHz : 299.946316 cache size : 512 KB fdiv_bug : no hlt_bug : no sep_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov mmx bogomips : 299.01
The token ring card is ISA, not pci. It has worked fine for years under 2.2.*
Any ideas?
-dennis T - 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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