On Thu, 1 Dec 2022 16:48:20 -0800, Kees Cook wrote: > On Mon, Nov 28, 2022 at 08:56:09AM +0100, Bernd Edlinger wrote: > > thanks for cleaning this up. > > Oh, hm, I never saw the original email -- I'll check my Spam folder, it > gets overly excited sometimes. > > > Just for completenes: > > > > I have actually two patches submitted a while ago, but did not get any response so far, > > one that would make the test case work as it is: > > > > [PATCH v10] exec: Fix dead-lock in de_thread with ptrace_attach > > https://lore.kernel.org/lkml/AM8PR10MB470801D01A0CF24BC32C25E7E40E9@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/ > > > > and my favorite one, that would fix the dead-lock altogether (and adjust the test case accordingly): > > > > [PATCH v11] exec: Fix dead-lock in de_thread with ptrace_attach > > https://lore.kernel.org/lkml/AM8PR10MB470875B22B4C08BEAEC3F77FE4169@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/ > > This fell off my radar, but let's look at it again. Is this still an > existing race after Eric's various refactorings? I assume so. Eric, can > you looked at this case? > Kindly ping :) This discussion suspended for half a year, but testcase 'tools/testing/selftests/ptrace/vmaccess.c' still can not pass on the newest v6.4 kernel. Would you continue to work it out? :) --- Thanks, Zheng Yejian > -- > Kees Cook >
