| Message ID | 20231215100708.2265609-1-houtao@huaweicloud.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | bpf: Fix warnings in kvmalloc_node() | expand |
On Fri, Dec 15, 2023 at 2:06 AM Hou Tao <houtao@huaweicloud.com> wrote: > > From: Hou Tao <houtao1@huawei.com> > > 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, #4, and #5 add tests to ensure these > warnings are fixed. > > Please see individual patches for more details. Comments are always > welcome. > > Change Log: > v3: > * add ack tags from Jiri > * return -E2BIG instead of -EINVAL for too-big cnt (Andrii) > * patch #3: rename the subtest from "failed_link_api" to > "attach_api_fails", so it is consistent with the naming > convention in multi-kprobe test. > * patch #4: newly-added patch to remove libbpf_get_error() in > kprobe_multi_test (Andrii) > > v2: https://lore.kernel.org/bpf/20231213112531.3775079-1-houtao@huaweicloud.com/ > * 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@huaweicloud.com/ > > Hou Tao (5): > 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: Don't use libbpf_get_error() in kprobe_multi_test > selftests/bpf: Add test for abnormal cnt during multi-kprobe > attachment > > kernel/trace/bpf_trace.c | 7 ++++ > .../bpf/prog_tests/kprobe_multi_test.c | 31 +++++++++++++++--- > .../bpf/prog_tests/uprobe_multi_test.c | 32 ++++++++++++++++++- > 3 files changed, 64 insertions(+), 6 deletions(-) > > -- > 2.29.2 > > LGTM, for the series: Acked-by: Andrii Nakryiko <andrii@kernel.org>
Hello: This series was applied to bpf/bpf-next.git (master) by Daniel Borkmann <daniel@iogearbox.net>: On Fri, 15 Dec 2023 18:07:03 +0800 you wrote: > From: Hou Tao <houtao1@huawei.com> > > Hi, > > The patch set aims to fix the warnings in kvmalloc_node() when passing > an abnormally big cnt during multiple kprobes/uprobes attachment. > > [...] Here is the summary with links: - [bpf-next,v3,1/5] bpf: Limit the number of uprobes when attaching program to multiple uprobes https://git.kernel.org/bpf/bpf-next/c/8b2efe51ba85 - [bpf-next,v3,2/5] bpf: Limit the number of kprobes when attaching program to multiple kprobes https://git.kernel.org/bpf/bpf-next/c/d6d1e6c17cab - [bpf-next,v3,3/5] selftests/bpf: Add test for abnormal cnt during multi-uprobe attachment https://git.kernel.org/bpf/bpf-next/c/0d83786f5661 - [bpf-next,v3,4/5] selftests/bpf: Don't use libbpf_get_error() in kprobe_multi_test https://git.kernel.org/bpf/bpf-next/c/00cdcd2900bd - [bpf-next,v3,5/5] selftests/bpf: Add test for abnormal cnt during multi-kprobe attachment https://git.kernel.org/bpf/bpf-next/c/1467affd16b2 You are awesome, thank you!
From: Hou Tao <houtao1@huawei.com> 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, #4, and #5 add tests to ensure these warnings are fixed. Please see individual patches for more details. Comments are always welcome. Change Log: v3: * add ack tags from Jiri * return -E2BIG instead of -EINVAL for too-big cnt (Andrii) * patch #3: rename the subtest from "failed_link_api" to "attach_api_fails", so it is consistent with the naming convention in multi-kprobe test. * patch #4: newly-added patch to remove libbpf_get_error() in kprobe_multi_test (Andrii) v2: https://lore.kernel.org/bpf/20231213112531.3775079-1-houtao@huaweicloud.com/ * 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@huaweicloud.com/ Hou Tao (5): 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: Don't use libbpf_get_error() in kprobe_multi_test selftests/bpf: Add test for abnormal cnt during multi-kprobe attachment kernel/trace/bpf_trace.c | 7 ++++ .../bpf/prog_tests/kprobe_multi_test.c | 31 +++++++++++++++--- .../bpf/prog_tests/uprobe_multi_test.c | 32 ++++++++++++++++++- 3 files changed, 64 insertions(+), 6 deletions(-)