> On Thu, Oct 3, 2019 at 3:50 AM Greg KH <g...@kroah.com> wrote: > Sent: Thursday, October 3, 2019 3:50 AM > > On Tue, Oct 01, 2019 at 01:15:54PM -0400, Sasha Levin wrote: > > This is a note to let you know that I've just added the patch titled > > > > perf ftrace: Use CAP_SYS_ADMIN instead of euid==0 > > > > to the 5.3-stable tree which can be found at: > > > > http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git; > > a=summary > > > > The filename of the patch is: > > perf-ftrace-use-cap_sys_admin-instead-of-euid-0.patch > > and it can be found in the queue-5.3 subdirectory. > > > > If you, or anyone else, feels it should not be added to the stable > > tree, please let <sta...@vger.kernel.org> know about it. > > > > > > > > commit 54a277c389061fc501624f51a13426d7b797f5f7 > > Author: Igor Lubashev <iluba...@akamai.com> > > Date: Wed Aug 7 10:44:17 2019 -0400 > > > > perf ftrace: Use CAP_SYS_ADMIN instead of euid==0 > > > > [ Upstream commit c766f3df635de14295e410c6dd5410bc416c24a0 ] > > > Sasha, this patch is breaking the build of perf in the stable branches. > Can you fix it up, or drop it?
This patch is fixing what's been broken forever in perf, so it is improving perf tool. But it is not fixing a vuln in the kernel itself. In any case, this patch is a part of a series. You would need the following to make that patch compile: 97993bd6eb89 perf tools: Add NO_LIBCAP=1 to the minimal build test c22e150e3afa perf tools: Add helpers to use capabilities if present Also, if you believe this update to perf tool warrants inclusion in a stable update, I'd rather point you at the entire series: d06e5fad8c46 perf tools: Warn that perf_event_paranoid can restrict kernel symbols 8859aedefefe perf symbols: Use CAP_SYSLOG with kptr_restrict checks aa97293ff129 perf evsel: Kernel profiling is disallowed only when perf_event_paranoid > 1 dda1bf8ea78a perf tools: Use CAP_SYS_ADMIN with perf_event_paranoid checks e9a6882f267a perf event: Check ref_reloc_sym before using it 73e5de70dca0 perf ftrace: Improve error message about capability to use ftrace c766f3df635d perf ftrace: Use CAP_SYS_ADMIN instead of euid==0 083c1359b0e0 perf tools: Add CAP_SYSLOG define for older systems 97993bd6eb89 perf tools: Add NO_LIBCAP=1 to the minimal build test c22e150e3afa perf tools: Add helpers to use capabilities if present 74d5f3d06f70 tools build: Add capability-related feature detection Best, - Igor
