Hi list, while hunting down a strange Linux kernel bug I saw this in the disassemblie: <radix_tree_insert>: ... c01ccf21: 0f 84 bd fe ff ff je c01ccde4 <radix_tree_insert+0x64> c01ccf27: 0f 0b ud2a c01ccf29: 1b 01 sbb (%ecx),%eax c01ccf2b: ab stos %eax,%es:(%edi) c01ccf2c: 78 31 js c01ccf5f <radix_tree_insert+0x1df> It's jumping over the data here^^^ c01ccf2e: c0 e9 b0 shr $0xb0,%cl c01ccf31: fe (bad) # <<< here c01ccf32: ff (bad) c01ccf33: ff c6 inc %esi c01ccf35: 04 0a add $0xa,%al c01ccf37: 01 e9 add %ebp,%ecx WRT to the two (bad) opcodes, should I start to worry? /holger Looks to me like everything from c01ccf2e to c01ccf5f could be data. The lesson here is look at the .S assembly files, not your disassembies. Scott --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.762 / Virus Database: 510 - Release Date: 9/13/2004