[bpf-next,v4,0/2] clean-up for BPF_LOG_KERNEL log level

Message

Hou Tao Dec. 1, 2021, 7:34 a.m. UTC

Hi,

There are just two clean-up patches for BPF_LOG_KERNEL log level:
patch #1 fixes the possible extra newline for bpf_log() and removes
the unnecessary calculation and truncation, and patch #2 disallows
BPF_LOG_KERNEL log level for bpf_btf_load().

Comments are welcome.

Regards,
Tao

Change Log:
v4:
  * rebased on bpf-next
  * add Acked-by tags

v3: https://www.spinics.net/lists/bpf/msg48992.html
  * rebased on bpf-next
  * address comments from Daniel Borkmann:
    patch #1: add prefix "BPF: " instead of "BPF:" for error message
    patch #2: remove uncessary parenthesis, keep the max buffer length
              setting of btf verifier, and add Fixes tag.

v2: https://www.spinics.net/lists/bpf/msg48809.html
  * rebased on bpf-next
  * patch #1: add a trailing newline if needed (suggested by Martin)
  * add patch #2
 
v1: https://www.spinics.net/lists/bpf/msg48550.html

Hou Tao (2):
  bpf: clean-up bpf_verifier_vlog() for BPF_LOG_KERNEL log level
  bpf: disallow BPF_LOG_KERNEL log level for bpf(BPF_BTF_LOAD)

 include/linux/bpf_verifier.h |  7 +++++++
 kernel/bpf/btf.c             |  3 +--
 kernel/bpf/verifier.c        | 16 +++++++++-------
 3 files changed, 17 insertions(+), 9 deletions(-)