Re: [PATCHv3] bpf: Emit audit messages upon successful prog load and unload

On Fri, Dec 06, 2019 at 10:49:34PM +0100, Jiri Olsa wrote: > From: Daniel Borkmann <daniel(a)iogearbox.net&gt; > > Allow for audit messages to be emitted upon BPF program load and > unload for having a timeline of events. The load itself is in > syscall context, so additional info about the process initiating > the BPF prog creation can be logged and later directly correlated > to the unload event. > > The only info really needed from BPF side is the globally unique > prog ID where then audit user space tooling can query / dump all > info needed about the specific BPF program right upon load event > and enrich the record, thus these changes needed here can be kept > small and non-intrusive to the core. > > Raw example output: > > # auditctl -D > # auditctl -a always,exit -F arch=x86_64 -S bpf > # ausearch --start recent -m 1334 > ... > ---- > time->Wed Nov 27 16:04:13 2019 > type=PROCTITLE msg=audit(1574867053.120:84664): proctitle="./bpf" > type=SYSCALL msg=audit(1574867053.120:84664): arch=c000003e syscall=321 \ > success=yes exit=3 a0=5 a1=7ffea484fbe0 a2=70 a3=0 items=0 ppid=7477 \ > pid=12698 auid=1001 uid=1001 gid=1001 euid=1001 suid=1001 fsuid=1001 \ > egid=1001 sgid=1001 fsgid=1001 tty=pts2 ses=4 comm="bpf" \ > exe="/home/jolsa/auditd/audit-testsuite/tests/bpf/bpf" \ > subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null) > type=UNKNOWN[1334] msg=audit(1574867053.120:84664): prog-id=76 op=LOAD > ---- > time->Wed Nov 27 16:04:13 2019 > type=UNKNOWN[1334] msg=audit(1574867053.120:84665): prog-id=76 op=UNLOAD > ... > > Signed-off-by: Daniel Borkmann <daniel(a)iogearbox.net&gt; > Co-developed-by: Jiri Olsa <jolsa(a)kernel.org&gt; > Signed-off-by: Jiri Olsa <jolsa(a)kernel.org&gt; Paul, Steve, given the merge window is closed by now, does this version look okay to you for proceeding to merge into bpf-next?