From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-174.mta0.migadu.com (out-174.mta0.migadu.com [91.218.175.174]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9520810A0F for ; Mon, 5 Feb 2024 06:58:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.174 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707116283; cv=none; b=L2GJUORvrQpSH8oD2iSjPTZtYeHONgfqU7Y+p48IjFMq+UIl3XmrHC1+1WNs6PzzEmIu1qQtLuQBqs1Nofg3lxgz/zYFWu6ouJstnbK42ro7D1XtODHhWF+20QKU/byA1g8HbdG2UTkUimVEuTpelIL3e6oPBI1jiMXnBzJchZ4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707116283; c=relaxed/simple; bh=a2id2WyiM9zMsxzoO0XSIuDgw9Q3Is5nNopl7phwFxg=; h=Message-ID:Date:MIME-Version:To:From:Subject:Content-Type; b=FkWwz0TdhKXa0PCq4DMjg1E8Fc41gUL+cKTUZ1JzpnIBrS5KcGjtiNvQMbmh/tc7tP4NHXb0xjt+voEPgVkFa6GEghqFZEnqkTd7gcw6G1Fr2kZrsw5FC/UyctKAQDpoDdgW8s3SoOZdFLgx4muhG5LdINun3F+mgYzlm/QUY+8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=BV36VqZ4; arc=none smtp.client-ip=91.218.175.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="BV36VqZ4" Message-ID: <32bde0f0-1881-46c9-931a-673be566c61d@linux.dev> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1707116279; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=uKpg5ZwxuYkdQBcsfSoX/GXGaC2E+symdv4wpTzu8F4=; b=BV36VqZ4Rh5MldI1+/xbLaKH7PYXhdX3lE0NMxpH48W8jVhEHVAyIvRoUwF4vpnZc7+ZCE wJ1BpZTSBkZgenUgPDBwP26Ae0AIxhQp9OeYC7jmT+HjD5Ad4XnpDR+wnl4Etukqo7DsC7 au8Ns/LarbBmDG8K/AYv8MUqy2FAU0w= Date: Sun, 4 Feb 2024 22:57:53 -0800 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Language: en-GB To: bpf , Eddy Z , Alexei Starovoitov X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Yonghong Song Subject: FYI: bpf selftest verif_scale_strobemeta_subprogs failed with latest llvm19 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Migadu-Flow: FLOW_OUT The selftest verif_scale_strobemeta_subprogs failed with latest llvm19 compiler. For example, $ ./test_progs -n 498 ... libbpf: prog 'on_event': BPF program load failed: Permission denied libbpf: prog 'on_event': -- BEGIN PROG LOAD LOG -- combined stack size of 4 calls is 544. Too large verification time 1417195 usec stack depth 24+440+0+32 processed 53561 insns (limit 1000000) max_states_per_insn 18 total_states 1457 peak_states 308 mark_read 146 -- END PROG LOAD LOG -- libbpf: prog 'on_event': failed to load: -13 libbpf: failed to load object 'strobemeta_subprogs.bpf.o' scale_test:FAIL:expect_success unexpected error: -13 (errno 13) #498 verif_scale_strobemeta_subprogs:FAIL Summary: 0/0 PASSED, 0 SKIPPED, 1 FAILED The maximum stack size exceeded 512 bytes and caused verification failure. The following llvm patch caused the above regression: https://github.com/llvm/llvm-project/pull/68882 I will do some analysis and try to find a solution to resolve this failure. Thanks, Yonghong