From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=63.250.43.97 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794381535; b=bL4KrxfSAmLEG8OxOqOwuWC2QFJ13z0vk6DGkJurQn95CP3w73SMj8YmA1hIOqzHewll 9b95H2AdDExteEEJIUzDaDVUOCb/IQgMv8UfSFjNMxiWYqEEI4EIkHF1VjdwORq2qsFKH 2PrAalv0visE6nVQLiB6NSdWkxV9ts0Vn8uUBz522dk0A+cRaPFv1glFRdq2UzO/qPO0j YCwG1Uvs6IG4icaVjjvAQwKTEKFMHn4+NSujvdNN6aEYxbft2AONmbDxmftg90Kx9GtMz 1og/WIWnWROrAFUQt6oGyGhtRvBiHKxddxfrU8u9yoPdjMcqWP/LEQcAEbUvO3ibQXg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794381535; 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=dqPNO2WMOv4KfQbVJZYBiQNhRHjI51nayDDM4FewP9s8mQ/p1UmxjiXHe+nZ8+yEdyn7 oZIkXz/f1zpVExkrWgHz+aWCzBlbWmKTNiIXvGlDRyKesZPsbPH6AJZUxfDJ/A2wZpLME 42wCiQQ7nYCdMN1Y+CVxbWkQXlNvG58wRHFXpgWnCWzSfDg3m9hZtbZSiNZRffqo++7dM zgCGIl/owPqR4gmLTipE/hGrjCa4dN/ERkBGz9IaRF9RrhnivbdopOo1omFb+8Uig1GVr hfJQYrKBf5vTQhr0zw10nItvsS0iLG5ip5n8TBtIKpnMOTnY1WxXmBMnF2gaO3521JQ== 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=63.250.43.97 Received: from out-2uec-a97.jellyfish.systems (out-2uec-a97.jellyfish.systems [63.250.43.97]) (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 BA941606A32A for ; Wed, 11 Nov 2026 07:18:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org BA941606A32A 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: bpf@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