On 9/29/2021 11:36 AM, Jiang Wang . wrote: > On Wed, Sep 29, 2021 at 8:44 AM Casey Schaufler wrote: >> On 9/20/2021 4:44 PM, Casey Schaufler wrote: >>> On 9/20/2021 3:35 PM, Jiang Wang . wrote: >>>> On Wed, Sep 15, 2021 at 9:52 AM Casey Schaufler wrote: >>>>> On 9/13/2021 4:47 PM, Paul Moore wrote: >>>>>> On Mon, Sep 13, 2021 at 6:53 PM Casey Schaufler wrote: >>>>>>> Commit 77462de14a43f4d98dbd8de0f5743a4e02450b1d >>>>>>> >>>>>>> af_unix: Add read_sock for stream socket types >>>>>>> >>>>>>> introduced a regression in UDS socket connections for the Smack LSM. >>>>>>> I have not tracked done the details of why the change broke the code, >>>>>>> but this is where bisecting the kernel indicates the problem lies, and >>>>>>> I have verified that reverting this change repairs the problem. >>>>>>> >>>>>>> You can verify the problem with the Smack test suite: >>>>>>> >>>>>>> https://github.com/smack-team/smack-testsuite.git >>>>>>> >>>>>>> The failing test is tests/uds-access.sh. >>>>>>> >>>> I tried to reproduce with tests/uds-access.sh, but the first two test >>>> cases always failed. >> Just piping in that the behavior hasn't changed in 5.15-rc3. >> It still usually fails, with the occasional success. These >> tests used to succeed. >> > Got it. I am still working on it. I noticed that I did not enable smack > related kernel configs in my previous tests. I will try again. > Also, just to make sure, could you send me your kernel config? I've attached both the fedora and ubuntu configuation files. Enjoy.