From: Jan Engelhardt <jengelh@xxxxxxxxxx> Date: Mon, 1 Dec 2008 23:40:18 +0100 (CET) > > On Monday 2008-12-01 23:02, John Haxby wrote: > >>>+ sg_init_table(sg, 2); > >>>+ sg_set_buf(&sg[0], data, n); > >>>+ strcpy(digest_password, sysrq_password); > >>>+ i = strlen(digest_password); > >>>+ sg_set_buf(&sg[1], digest_password, i); > >> > >> Could we directly use sysrq_password instead of copying it to > >> digest_password first? > > > > No :-) Eventually I discovered the reason my code wasn't working > > boils down to the definition of sg_set_buf: > > > > sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf)) > > > > which doesn't work for sysrq_password. I don't know why I'll > > double check. > > Well, sysrq_password is in the .bss section, where as digest_password > is on the heap due to being kmalloc'ed. Maybe that makes a difference? > Someone more versed with the virtual memory layer might know. You can't use these interfaces on kernel image addresses. -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
