On Thu, 27 Dec 2018 13:51:19 +0500 Mikhail Gavrilov <mikhail.v.gavrilov@xxxxxxxxx> wrote: > Hi folks. > Why I cannot read content of some debugfs files which are should be > readable. > https://lists.freedesktop.org/archives/amd-gfx/2018-December/029918.html > > [mikhail@localhost ~]$ sudo bash > [sudo] password for mikhail: > [root@localhost mikhail]# cd /sys/kernel/debug/dri/0 > [root@localhost 0]# xxd -e amdgpu_gca_config > xxd: amdgpu_gca_config: Operation not permitted > [root@localhost 0]# getenforce > Enforcing > [root@localhost 0]# setenforce 0 > [root@localhost 0]# xxd -e amdgpu_gca_config > xxd: amdgpu_gca_config: Operation not permitted > [root@localhost 0]# No answer, just some further things to look at or try. I can use xxd -e on files in that directory without problem, though I don't have the file you are looking for since I use radeon. On my system everything in there is 444 permissions, except directories. What does your system show for ls -nZ? Can less open the file after warning you about binary data? Can you cat them into pipe to xxd? cat amd_gca_config | xxd -e - What if you direct the output to someplace like your home directory? xxd -e amd_gca_config ~/amd_gca_config.hexdump Maybe write isn't permitted in those directories. _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
