From patchwork Mon Dec 11 11:28:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hou Tao X-Patchwork-Id: 13487051 Received: from dggsgout11.his.huawei.com (unknown [45.249.212.51]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 05C58A6 for ; Mon, 11 Dec 2023 03:27:42 -0800 (PST) Received: from mail.maildlp.com (unknown [172.19.163.235]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4Spfc65X0Tz4f3lfD for ; Mon, 11 Dec 2023 19:27:34 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.112]) by mail.maildlp.com (Postfix) with ESMTP id A7ABF1A0AC5 for ; Mon, 11 Dec 2023 19:27:39 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.124.27]) by APP1 (Coremail) with SMTP id cCh0CgCnqxEp8nZlUTNnDQ--.13914S4; Mon, 11 Dec 2023 19:27:39 +0800 (CST) From: Hou Tao To: bpf@vger.kernel.org Cc: Martin KaFai Lau , Alexei Starovoitov , Andrii Nakryiko , Song Liu , Hao Luo , Yonghong Song , Daniel Borkmann , KP Singh , Stanislav Fomichev , Jiri Olsa , John Fastabend , xingwei lee , houtao1@huawei.com Subject: [PATCH bpf-next 0/4] bpf: Fix warnings in kvmalloc_node() Date: Mon, 11 Dec 2023 19:28:39 +0800 Message-Id: <20231211112843.4147157-1-houtao@huaweicloud.com> X-Mailer: git-send-email 2.29.2 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: cCh0CgCnqxEp8nZlUTNnDQ--.13914S4 X-Coremail-Antispam: 1UD129KBjvdXoW7Wr4UJr1UGw1UWF18JFWrKrg_yoWDArb_u3 90vryDCrW7Za4qka42gFn5ZrZ8Kay8Cr13A3WYyrW3Aw1Iyr48GF4vqryrZw47Xw4jyFy7 tw1DXFW09rsIvjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUb28YFVCjjxCrM7AC8VAFwI0_Gr0_Xr1l1xkIjI8I6I8E6xAIw20E Y4v20xvaj40_Wr0E3s1l1IIY67AEw4v_Jr0_Jr4l8cAvFVAK0II2c7xJM28CjxkF64kEwV A0rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVW5JVW7JwA2z4x0Y4vE2Ix0cI8IcVCY1x02 67AKxVWxJVW8Jr1l84ACjcxK6I8E87Iv67AKxVW0oVCq3wA2z4x0Y4vEx4A2jsIEc7CjxV AFwI0_GcCE3s1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2 j2WlYx0E2Ix0cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE7x kEbVWUJVW8JwACjcxG0xvY0x0EwIxGrwACI402YVCY1x02628vn2kIc2xKxwCF04k20xvY 0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I 0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr41lIxAI cVC0I7IYx2IY67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Gr0_Cr1lIxAIcV CF04k26cxKx2IYs7xG6rW3Jr0E3s1lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280 aVCY1x0267AKxVW8Jr0_Cr1UYxBIdaVFxhVjvjDU0xZFpf9x07UWE__UUUUU= X-CM-SenderInfo: xkrx3t3r6k3tpzhluzxrxghudrp/ X-Patchwork-Delegate: bpf@iogearbox.net From: Hou Tao 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 fixes the warning in multiple uprobes attachment and patch #4 is the corresponding test case. Patch #2 fixes the warning for multiple kprobes attachment and patch #3 is the corresponding test case. Please see individual patches for more details. Comments are always welcome. Hou Tao (4): bpf: Use __GFP_NOWARN for kvcalloc when attaching multiple uprobes bpf: Use __GFP_NOWARN for kvmalloc_array() when attaching multiple kprobes selftests/bpf: Add test for abnormal cnt during multi-kprobe attachment selftests/bpf: Add test for abnormal cnt during multi-uprobe attachment kernel/trace/bpf_trace.c | 10 ++--- .../bpf/prog_tests/kprobe_multi_test.c | 14 ++++++ .../bpf/prog_tests/uprobe_multi_test.c | 43 ++++++++++++++++++- 3 files changed, 61 insertions(+), 6 deletions(-)