You made alpha users sad. ----- Forwarded message from Michael Cree <[email protected]> -----
From: Michael Cree <[email protected]> To: [email protected] CC: Meelis Roos <[email protected]>, [email protected], [email protected] Subject: Re: Bug#572512: module-init-tools: depmod unaligned trap on alpha On 15/04/10 20:53, Marco d'Itri wrote: > On Apr 15, Meelis Roos<[email protected]> wrote: > >>>> Please find out exactly which operation is causing the traps. >>> Are there any news? I just found a moment to look at this: Core was generated by `depmod -a'. Program terminated with signal 10, Bus error. #0 0x000000012000e34c in native_endianness () at ../util.c:205 205 return (char) *((uint32_t*)("\1\0\0\2")); (gdb) bt #0 0x000000012000e34c in native_endianness () at ../util.c:205 #1 0x000000012000738c in main (argc=2, argv=0x11facdc98) at ../depmod.c:1312 (gdb) list 200 int __attribute__ ((pure)) native_endianness() 201 { 202 /* Encoding the endianness enums in a string and then reading that 203 * string as a 32-bit int, returns the correct endianness automagically. 204 */ 205 return (char) *((uint32_t*)("\1\0\0\2")); 206 } Yeah, nice programming guys. Allocate a string, i.e. an array of char, which the compiler will merely byte align and then read it back as a long word which must be long word aligned. And the programmer thinks he is so smart that he descibes it as "automagically"! Doh. Cheers Michael. ----- End forwarded message ----- -- ciao, Marco -- To unsubscribe from this list: send the line "unsubscribe linux-modules" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
