Thomas Gleixner d59ef3125c bpf: Remove recursion prevention from rcu free callback ...

[ Upstream commit 8a37963c7ac9ecb7f86f8ebda020e3f8d6d7b8a0 ]

If an element is freed via RCU then recursion into BPF instrumentation
functions is not a concern. The element is already detached from the map
and the RCU callback does not hold any locks on which a kprobe, perf event
or tracepoint attached BPF program could deadlock.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200224145643.259118710@linutronix.de
Signed-off-by: Sasha Levin <sashal@kernel.org>

2020-10-01 20:40:08 +02:00

..

arraymap.c

bpf: map_get_next_key to return first key on NULL

2018-05-09 09:50:19 +02:00

core.c

bpf: fix bpf_jit_limit knob for PAGE_SIZE >= 64K

2019-08-25 10:51:50 +02:00

hashtab.c

bpf: Remove recursion prevention from rcu free callback

2020-10-01 20:40:08 +02:00

helpers.c

bpf: direct packet write and access for helpers for clsact progs

2016-09-20 23:32:11 -04:00

inode.c

fs: Replace CURRENT_TIME with current_time() for inode timestamps

2016-09-27 21:06:21 -04:00

Makefile

bpf: silence warning messages in core

2019-08-04 09:33:19 +02:00

percpu_freelist.c

bpf: fix lockdep splat

2017-12-14 09:28:23 +01:00

percpu_freelist.h

bpf: introduce percpu_freelist

2016-03-08 15:28:31 -05:00

stackmap.c

bpf: fix wrong exposure of map_flags into fdinfo for lpm

2018-03-11 16:21:34 +01:00

syscall.c

bpf: Explicitly memset the bpf_attr structure

2020-04-02 17:20:40 +02:00

verifier.c

bpf: check pending signals while verifying programs

2018-12-21 14:11:38 +01:00