From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=104.207.68.34 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794381536; b=tIcLFaOhCdsQaAU4a2RoPNGXiOFMpNnZ85tlf7yAqkq77wd1vx6raibj/ZoypSwQEkex YSYVWCt6/79Rp9DNdfe0ZXoqcMyhOXdmWBm50n7R1cO7kwIhgyFTE9oVt2eHWO3F/wlNp 41OEfLmoxzaY/xVvpWVKyR7yaN4oFgN/+unLINKZ8ICJJw+bAnGZjADpxr39NnPuuKePE DYrwDLvIar1Am7OaD8WtzTrKB2Zh0YSXbIr0M4+5Mx+7TOealssDDd+s9Ynn+NmRoiztU VtDgOHfdDoE+VbcCHG66IjT163FmL1bag+pkkNqgM/DFDQsEaNy0q1Bi2YduAtW/n1g== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794381536; h=DMARC-Filter:Received:DKIM-Signature:From:To:Cc:Subject:Date: Message-ID:X-Mailer:MIME-Version:Content-Transfer-Encoding: X-Envelope-From; bh=FDVYx8yy52ErHGioH23BNSxBVVZYdOQuntf0S9ipsa0=; b=JsfNuzhk1QrV6xm58UUlEs1bl8Z3sE/EWjXxNDESyawCYGlDGnv3FC+DARlVH5t+MooS t8B4OKC9zXxyeNZ3X/T01RYieSijXACJ3tbvLDUqDLCVslLcnKyMvjl3BsoXpBWnj8o5D A5Ds7KBVVyQw/nVO5UH38T8uP8EGUL0W86h0470CebAhrMc046KEJu+7zOU/U76za2kgY jgcMaCDe/HfntvvtSma0IYGRceLOVx23Fd1AdNj85zrckpzo8mI1wpdS1PEryT6JUiSRJ AlkQZwUQ9AcrBAdDjMSnrWh+5xHxBiV6UdyNHg1Ye0SlM4c3jJ68beq1WXd3SGEUmiQ== 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=kXQVO9cc; arc=none smtp.remote-ip=104.207.68.34 Received: from out-93wp-a34.jellyfish.systems (out-93wp-a34.jellyfish.systems [104.207.68.34]) (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 B3A2C606A321 for ; Wed, 11 Nov 2026 07:18:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org B3A2C606A321 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=kXQVO9cc Received: from fedora (unknown [151.145.76.168]) (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 4jPZcm1bzTz6tkL; Wed, 11 Nov 2026 07:18:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tychen.cc; s=spacemail; t=1794381515; bh=FDVYx8yy52ErHGioH23BNSxBVVZYdOQuntf0S9ipsa0=; h=From:To:Cc:Subject:Date:From; b=kXQVO9ccHYWViACQPDpmlLFRWVPV5tx3Wzp1wFQE8lvUGe/Fky8pccpFlySaMwebZ OOaHF2QabfKCa4jDKyjmPtJ+wLt6J5UjX7/5UXlpsLxuRvmzXZgWIokKpnDVLtL7Kk Z/GgZwv3U2DRaoQd3VS/16JDypMjGxVqDhYtgEu5KZXzt+gZJocZ9v3EmZGuwj97TV VN4N2Ts6u4yn92BnAuVu8dX/RKqSkRrKA19q2DTPcuGet+OxMCT+Fv+Q6jJsSVxuOw CIn6hintx5fDEaMhzrax8MvVQdsbxmcaNjTzZ7UaOk5jWCr+8hvuR6gLu3X6JfQJTU Y0uyj2IRM9XQQ== 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, shuah@kernel.org, linux-kselftest@vger.kernel.org, yatsenko@meta.com Subject: [PATCH bpf v2 0/2] bpf: Fix RHASH batch cursor loss Date: Wed, 11 Nov 2026 16:18:22 +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 Report a lost RHASH traversal key as -EAGAIN rather than end-of-iteration. The kernel change is unchanged from v1. Changes in v2: - Add the batch subtests to the existing rhash.c suite. - Carry Mykyta's Acked-by on the fix. All 17 RHASH subtests pass in x86-64 KVM, with five further successful runs of the five batch subtests. The concurrent-delete test still fails on the unpatched kernel. v1: https://lore.kernel.org/r/cover.1794056839.git.hi@tychen.cc Tianyi Chen (2): bpf: Report lost RHASH batch traversal keys as EAGAIN selftests/bpf: Cover RHASH batch cursor loss kernel/bpf/hashtab.c | 13 +- .../testing/selftests/bpf/prog_tests/rhash.c | 177 ++++++++++++++++++ 2 files changed, 184 insertions(+), 6 deletions(-) base-commit: 475a0cfd02f14d764023e926ac01fc7597134229 -- 2.56.0