Kees Cook <keescook@xxxxxxxxxxxx> writes: > On Tue, Nov 02, 2021 at 01:22:19PM -0500, Eric W. Biederman wrote: >> Kees Cook <keescook@xxxxxxxxxxxx> writes: >> >> > On Thu, Oct 28, 2021 at 05:06:53PM -0500, Eric W. Biederman wrote: >> >> Kees Cook <keescook@xxxxxxxxxxxx> writes: >> >> >> >> > On Thu, Oct 28, 2021 at 12:26:26PM -0500, Eric W. Biederman wrote: >> >> >> >> Is it a problem that the debugger can see the signal if the process does >> >> not? >> > >> > Right, I'm trying to understand that too. However, my neighbor just lost >> > power. :| >> > >> > What I was in the middle of checking was what ptrace "sees" going >> > through a fatal SIGSYS; my initial debugging attempts were weird. >> >> Kees have you regained power and had a chance to see my SA_IMMUTABLE >> patch? > > Apologies; I got busy with other stuff, but I've tested this now. It's > happy and I see the expected behaviors again. Note that I used the patch > with this change: > > -#define SA_IMMUTABLE 0x008000000 > +#define SA_IMMUTABLE 0x00800000 > > Tested-by: Kees Cook <keescook@xxxxxxxxxxxx> Thanks. And I see you have written a test as well that should keep this kind of bug from happening again. Eric
