On Thu, Jun 27, 2019 at 10:08:37PM +0100, Stuart Henderson wrote: > #0 0x082eefff in botan_sha160_x86_32_compress () from > /usr/local/lib/libbotan-1.10.so.1.1
This code is at a page boundary, so it traps into the kernel. There it is detected that the esp register is currently not on the stack. The hand written assembler code in src/hash/sha1_x86_32/sha1_x86_32_imp.S uses esp as a regular register. Its content is safed at the beginning of the function and restored at the end. If there is a trap due to a page boundary, the kernel stack guard kicks in and aborts the process. Botan-1 is end of life. Perhaps we should just replace the i386 assembler implementation with the regular C code. bluhm
