Messages in this thread | | | Date | Fri, 4 Sep 2009 23:33:37 +0200 | From | Oleg Nesterov <> | Subject | Re: [PATCH v3] exec: do not sleep in TASK_TRACED under ->cred_guard_mutex |
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On 09/04, Andrew Morton wrote: > > On Fri, 4 Sep 2009 19:26:48 +0200 > Oleg Nesterov <oleg@redhat.com> wrote: > > > Tom Horsley reports that his debugger hangs when it tries to read > > /proc/pid_of_tracee/maps, this happens since > > > > "mm_for_maps: take ->cred_guard_mutex to fix the race with exec" > > 04b836cbf19e885f8366bccb2e4b0474346c02d > > > > commit in 2.6.31. > > I get a reject in binfmts.h because your kernel has `extern void > set_binfmt' and mine has `extern int set_binfmt'.
Ah, I have exec-fix-set_binfmt-vs-sys_delete_module-race.patch from -mm applied...
> Hopefully this patch works OK in mainline as well as in whatever kernel > you tested against!
Yes I tried to test it ;)
> I see a Cc:stable in the mail headers, but not in the changelog. I > don't think the patch is applicable to -stable unless we miss 2.6.31.
-stable has the same problems but I agree, it can live without this fix.
Oleg.
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