On Thu, Jan 17, 2019 at 7:28 AM Quentin Monnet <quentin.mon...@netronome.com> wrote: > > > If the user does not have root privileges (or more precisely, the > CAP_SYS_ADMIN capability) detection will be erroneous for most > parameters. Therefore, forbid non-root users to run the command. > > v5: > - Move exported symbols to a new LIBBPF_0.0.2 section in libbpf.map > (patches 4 to 6). > - Minor fixes on patches 3 and 4.
I was about to apply the set, but while testing on older kernels bpftool crashed the box. It's a kernel bug, no doubt, but bpftool shouldn't be doing dangerous operations if it can potentially crash it. I'm debugging what went wrong. It crashed after this message: CONFIG_XFRM is set to y dmesg was: [1757577.380114] BUG: unable to handle kernel [1757577.388476] NULL pointer dereference [1757577.395957] at (null) [1757577.402752] IP: (null) [1757577.421265] Call Trace: [1757577.421269] ? SyS_bpf+0x18b/0x16b0 [1757577.421272] ? __audit_syscall_entry+0xb5/0x100 [1757577.421277] do_syscall_64+0x53/0x150 Not sure how that was possible. I'm still debugging.
