On 03/26/2015 03:37 PM, Yu, Fenghua wrote: >> > void sighup(int sig, siginfo_t *info, void *ctxt) { >> > struct ucontext *uctxt = ctxt; >> > struct sigcontext *sctxt = (void*)&uctxt->uc_mcontext; >> > >> > printf("SIGHUP! %p\n", sctxt->fpstate); >> > sctxt->fpstate = (void *)1; > sctxt->fpstate=(void *)1 changes the fpstate pointer in the sigcontext. It > will generate segfault and bad frame info in kernel. > > This is expected behavior, right? Is this still a valid test?
Just to be clear, I saw a full-on kernel panic induced from an unprivileged application. Are you seeing something different? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/