Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
pull-request: bpf 2021-03-18

The following pull-request contains BPF updates for your *net* tree.

We've added 10 non-merge commits during the last 4 day(s) which contain
a total of 14 files changed, 336 insertions(+), 94 deletions(-).

The main changes are:

1) Fix fexit/fmod_ret trampoline for sleepable programs, and also fix a ftrace
   splat in modify_ftrace_direct() on address change, from Alexei Starovoitov.

2) Fix two oob speculation possibilities that allows unprivileged to leak mem
   via side-channel, from Piotr Krysiuk and Daniel Borkmann.

3) Fix libbpf's netlink handling wrt SOCK_CLOEXEC, from Kumar Kartikeya Dwivedi.

4) Fix libbpf's error handling on failure in getting section names, from Namhyung Kim.

5) Fix tunnel collect_md BPF selftest wrt Geneve option handling, from Hangbin Liu.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>