Stanislav Fomichev 055eb95533 bpf: Move rcu lock management out of BPF_PROG_RUN routines ... Commit 7d08c2c911 ("bpf: Refactor BPF_PROG_RUN_ARRAY family of macros into functions") switched a bunch of BPF_PROG_RUN macros to inline routines. This changed the semantic a bit. Due to arguments expansion of macros, it used to be: rcu_read_lock(); array = rcu_dereference(cgrp->bpf.effective[atype]); ... Now, with with inline routines, we have: array_rcu = rcu_dereference(cgrp->bpf.effective[atype]); /* array_rcu can be kfree'd here */ rcu_read_lock(); array = rcu_dereference(array_rcu); I'm assuming in practice rcu subsystem isn't fast enough to trigger this but let's use rcu API properly. Also, rename to lower caps to not confuse with macros. Additionally, drop and expand BPF_PROG_CGROUP_INET_EGRESS_RUN_ARRAY. See [1] for more context. [1] https://lore.kernel.org/bpf/CAKH8qBs60fOinFdxiiQikK_q0EcVxGvNTQoWvHLEUGbgcj1UYg@mail.gmail.com/T/#u v2 - keep rcu locks inside by passing cgroup_bpf Fixes: 7d08c2c911 ("bpf: Refactor BPF_PROG_RUN_ARRAY family of macros into functions") Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/bpf/20220414161233.170780-1-sdf@google.com		2022-04-19 09:45:47 -07:00
..
acpi
asm-generic	hyperv-fixes for 5.18-rc2	2022-04-07 06:35:34 -10:00
clocksource
crypto
drm
dt-bindings	RTC for 5.18	2022-04-01 09:37:18 -07:00
keys
kunit
kvm
linux	bpf: Move rcu lock management out of BPF_PROG_RUN routines	2022-04-19 09:45:47 -07:00
math-emu
media
memory
misc
net	net/sched: act_skbedit: Add extack messages for offload failure	2022-04-08 13:45:43 +01:00
pcmcia
ras	mm/memory-failure.c: fix race with changing page compound again	2022-03-22 15:57:07 -07:00
rdma
scsi	SCSI misc on 20220324	2022-03-24 19:37:53 -07:00
soc	drm for 5.18-rc1	2022-03-24 16:19:43 -07:00
sound	sound fixes for 5.18-rc1	2022-04-01 10:32:46 -07:00
target
trace	tcp: Add tracepoint for tcp_set_ca_state	2022-04-07 20:33:15 -07:00
uapi	Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2022-04-08 17:07:29 -07:00
vdso
video
xen