On Wed, Dec 13, 2023 at 07:25:27PM +0800, Hou Tao wrote: > From: Hou Tao <houtao1@xxxxxxxxxx> > > Hi, > > The patch set aims to fix the warnings in kvmalloc_node() when passing > an abnormally big cnt during multiple kprobes/uprobes attachment. > > Patch #1 and #2 fix the warning by limiting the maximal number of > uprobes/kprobes. Patch #3 and #4 add tests to ensure these warnings are > fixed. > > Please see individual patches for more details. Comments are always > welcome. > > Change Log: > v2: > * limit the number of uprobes/kprobes instead of suppressing the > out-of-memory warning message (Alexei) > * provide a faked non-zero offsets to simplify the multiple uprobe > test (Jiri) > > v1: https://lore.kernel.org/bpf/20231211112843.4147157-1-houtao@xxxxxxxxxxxxxxx/ > > Hou Tao (4): > bpf: Limit the number of uprobes when attaching program to multiple > uprobes > bpf: Limit the number of kprobes when attaching program to multiple > kprobes > selftests/bpf: Add test for abnormal cnt during multi-uprobe > attachment > selftests/bpf: Add test for abnormal cnt during multi-kprobe > attachment > > kernel/trace/bpf_trace.c | 7 ++-- > .../bpf/prog_tests/kprobe_multi_test.c | 14 ++++++++ > .../bpf/prog_tests/uprobe_multi_test.c | 33 ++++++++++++++++++- > 3 files changed, 51 insertions(+), 3 deletions(-) with one minor comment, for the patchset Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx> thanks, jirka > > -- > 2.29.2 >
