From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=198.54.127.134 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794057112; b=Yt/EsS4FWDZ3efmb5rP84l6zd9O/1jbzKoPFZeV+fb8U54hJymczO3yT7rVbM6B5Fi5W BNqI8PkczmJ/0NONYCYvjzG0wWPXuReL259+vb9aanpqpSHD20Jx+5Z+QKrKZ56458p2L 4uxC7VvCWgoNcGRjONjZ3MEfmY/CV70/vAA5g0+IK6AGW9b6YBwDiXNvz+84tN2KaABRg FMCbJsZ1jFFrqgfStidbTZVJLP4YcYpMVzthp8N6ML+YPYZfg1BB6Ul/6l87QKG+5dHRP PDduE//7tijznezIsoUEn8QkhLZ8EvEpP2iYA21/Tr307aTMd6mVgOHMF5sI+s5p8Ow== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794057112; h=DMARC-Filter:Received:DKIM-Signature:From:To:Cc:Subject:Date: Message-ID:X-Mailer:MIME-Version:Content-Transfer-Encoding: X-Envelope-From; bh=HZdie3PW+1vtIp8DWod2GNqosXfOJizp6+UxsGisvRw=; b=cXBn6bq5fKIWFzAV0ABf515poXaVWACLr8kCcn/6dg6TlUMNvi2i7hL3/CGyvyzDC1JL K97ikSjMQFinKVkpVIpeIvJVm2+y35/5yM0D8BCLUmlEQ7r1GwrRewGvwuO+h+RNc3GrO HnCwfFKZcuuhg7a1dQv+j8st0QXeSGktIhtivuXVGIeh0vTAL041MABewT/ViNdLmMiTs Beo7nqi3UgKuRSS1To68qzJyhY4hbJZoGKS9++JKVArPseyKfZj4yHDiUEQWs1c6LBM7m UB2Vwd+iZ9nOUNZkY3gvXwikcXwOP5zy7F8gStVcoq/CJmEpYMBfaJcS6GpRqV1WIgw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=tychen.cc; spf=pass smtp.mailfrom=tychen.cc; dkim=pass header.d=tychen.cc header.i=@tychen.cc header.a=rsa-sha256 header.s=spacemail header.b=MdnzvFcr; arc=none smtp.remote-ip=198.54.127.134 Received: from out-2z4y-a134.jellyfish.systems (out-2z4y-a134.jellyfish.systems [198.54.127.134]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 512AC606A330 for ; Sat, 7 Nov 2026 13:11:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 512AC606A330 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=tychen.cc Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=tychen.cc Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=tychen.cc header.i=@tychen.cc header.a=rsa-sha256 header.s=spacemail header.b=MdnzvFcr Received: from fedora (ec2-52-197-241-54.ap-northeast-1.compute.amazonaws.com [52.197.241.54]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mail.spacemail.com (Postfix) with ESMTPSA id 4jMGdq2xlNz8sWN; Sat, 07 Nov 2026 13:11:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tychen.cc; s=spacemail; t=1794057090; bh=HZdie3PW+1vtIp8DWod2GNqosXfOJizp6+UxsGisvRw=; h=From:To:Cc:Subject:Date:From; b=MdnzvFcrR9E3Gu7gM39gih+CEOOc8sqG5gUeTWmv969vHRxBW06fsR4ml4fABFpAN Mx+halgLBtrL7kmTxSJd4a7rSLCSELfj8d6S20pna7jELod/ed4/6Yfu935GsRB3wo CbzfhEByiksLEEpffLCEgoEa0Hkc80OyqlZwzYjMr19mak1NpSxSIbCtnH5uAjU2OD dcu9vhgRLzDz5f3yLrp9pefugiSe2a+1a7UL7Xmon1b2RddX1z+C8r0rZWMN+rawJ+ Bhwm0jKIVbKJTHrstSVyAUxRJX1qZXz8zzEbnDtkuMc1YoDDoJjBZpo0eRWwExN8Cm GOuI5gam3NrTw== From: Tianyi Chen To: bpf@vger.kernel.org Cc: Tianyi Chen , ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, eddyz87@gmail.com, memxor@gmail.com, yatsenko@meta.com, shuah@kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH bpf 0/2] bpf: Fix RHASH batch cursor loss Date: Sat, 7 Nov 2026 22:11:18 +0900 Message-ID: X-Mailer: git-send-email 2.56.0 X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Envelope-From: hi@tychen.cc RHASH batch lookups can report end-of-map when a key is deleted during the walk. Return EAGAIN for that case and add a regression test. Tested in an x86-64 VM: the regression fails without the fix and all five subtests pass with it. The bpftool batch and recursive tests also pass, separately and together. Tianyi Chen (2): bpf: Report lost RHASH batch traversal keys as EAGAIN selftests/bpf: Cover RHASH batch cursor loss kernel/bpf/hashtab.c | 13 +- .../selftests/bpf/prog_tests/rhash_batch.c | 181 ++++++++++++++++++ 2 files changed, 188 insertions(+), 6 deletions(-) create mode 100644 tools/testing/selftests/bpf/prog_tests/rhash_batch.c base-commit: 646114a0d2f39e52f2204196ac12a6fe5a5a3fd3 -- 2.56.0