https://bugzilla.kernel.org/show_bug.cgi?id=214621
--- Comment #17 from Lang Yu (Lang.Yu@amd.com) --- Created attachment 299441 --> https://bugzilla.kernel.org/attachment.cgi?id=299441&action=edit test patch to find who pinned amdgpu dmabuf
dmesg may be too large, please add log_buf_len=1024M into kernel cmdline. Thanks for you help!