From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B9D9AC4332F for ; Fri, 3 Nov 2023 13:14:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233073AbjKCNOC (ORCPT ); Fri, 3 Nov 2023 09:14:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40248 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233264AbjKCNOB (ORCPT ); Fri, 3 Nov 2023 09:14:01 -0400 Received: from mail-pl1-x633.google.com (mail-pl1-x633.google.com [IPv6:2607:f8b0:4864:20::633]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B2B1A10CC; Fri, 3 Nov 2023 06:13:47 -0700 (PDT) Received: by mail-pl1-x633.google.com with SMTP id d9443c01a7336-1cc3bb4c307so21978145ad.0; Fri, 03 Nov 2023 06:13:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1699017227; x=1699622027; darn=vger.kernel.org; h=content-transfer-encoding:subject:from:cc:to:content-language :user-agent:mime-version:date:message-id:from:to:cc:subject:date :message-id:reply-to; bh=3MwPMVH4LDuJgobt9cfmpj/2pKioxsX4geRXK7wNjBk=; b=TrlksywTK7VN2uE8xbljLFhGFEJqhwkkquWyjt1BHcgtRlrbS2RCYqtRRh/s+h346n KbWbdk/l/5+QSVQ9Qzlx/Br9FbjmEULcRaYuOvJCw2VSZ1Orw6wS9spPiK8EKCfKn4ZO EC7B+e6G87ftgcwjfw3OagqnRmfuv3wZj5H5CdmwqYniJcxIV/hUUOmV9BQZNMtb+yGm E0c5asW2HaEKVYguQPIrzcwwvp0k10OKL2GlpzAj2kTDBBIGKwP+XYHYCHhcsFHJjlij 8Vt7ZAgERMswDVnDr+lCs8+4+Y1wf8BelBv277F7s0ES91iVrrodWDN9L8Ur0mOHRO5H +o7A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699017227; x=1699622027; h=content-transfer-encoding:subject:from:cc:to:content-language :user-agent:mime-version:date:message-id:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=3MwPMVH4LDuJgobt9cfmpj/2pKioxsX4geRXK7wNjBk=; b=CmTnnHx+rAbnAu14L4mOGSji1IkZOdt2+a+mG2ET9hPif2EaUzaRwvMXRJa9VteTlY mTaIDn9glYJYZpnMBW8QPBGouGO2M4JVY2Ng7R2dC5ZqdEQjlsq5HDxvOiBZqiv2m1i+ BqIrd49CMl3/0YDi9UNSR8GaHL7CXnVaPm1PA/VmumLgdoINO5ITBRsXi7X/1CM7qwZ5 Hg+0RWigKiXlAA3q+YnW5msUvMnuIg5oHOAbgjPdL9ogiRHdWfcoJxRBy0UDz6UOFpfZ 1MZJxSUiFalkOh5lU80qxkqaPfvFQgdCUv417miyN0dxRjY5sUn6qOCxTW/rBHMufVo8 nI0Q== X-Gm-Message-State: AOJu0YzGEWF9b+ToWC1+NYaRbvMTDfJWe1DRs/8K05wzwaZTJivVsg7V 0yTxo9Af3u6it5ks/2sGJQ+lNymML4E= X-Google-Smtp-Source: AGHT+IGox8sPxCi41z2/fQ07a38d3a66J0bRgzx3BiBzfXjqXw/i/vdXI5phmjIVWUfpgfDcGS/OIA== X-Received: by 2002:a17:902:e54e:b0:1cc:3fe1:f45e with SMTP id n14-20020a170902e54e00b001cc3fe1f45emr17035703plf.27.1699017226695; Fri, 03 Nov 2023 06:13:46 -0700 (PDT) Received: from [192.168.0.106] ([103.131.18.64]) by smtp.gmail.com with ESMTPSA id iw14-20020a170903044e00b001cc50146b43sm1377428plb.202.2023.11.03.06.13.43 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 03 Nov 2023 06:13:46 -0700 (PDT) Message-ID: <2fa930bb-54dd-4942-a88d-05a47c8e9731@gmail.com> Date: Fri, 3 Nov 2023 20:13:39 +0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US To: Linux Kernel Mailing List , Linux Regressions , Linux Wireless Cc: Anjaneyulu , Gregory Greenman , Johannes Berg , =?UTF-8?B?TmlrbMSBdnMgS2/EvGVzxYZpa292cw==?= , Fabio Comolli From: Bagas Sanjaya Subject: Fwd: iwlmvm: Linux 6.7 pre-rc1 prints stack trace of iwl_op_mode_mvm_start; caused by commit b6e3d1ba4fcf Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Hi, I notice a regression report on Bugzilla [1]. Quoting from it: > When testing the branch that will become Linux 6.7-rc1, ever since commit b6e3d1ba4fcf02176846d03a930203d8133c0aaf I have observed the following abbreviated kernel stack trace (please see attachments for the full trace): > > ``` > [ 6.733281] ? __warn+0xc3/0x1d0 > [ 6.733284] ? iwl_op_mode_mvm_start+0x9c4/0x9d0 [iwlmvm] > [ 6.733299] ? report_bug+0x167/0x220 > [ 6.733301] ? handle_bug+0x3d/0x90 > [ 6.733304] ? exc_invalid_op+0x1a/0x60 > [ 6.733306] ? asm_exc_invalid_op+0x1a/0x20 > [ 6.733309] ? iwl_op_mode_mvm_start+0x9c4/0x9d0 [iwlmvm] > [ 6.733325] _iwl_op_mode_start+0x66/0xe0 [iwlwifi] > [ 6.733338] iwl_opmode_register+0x87/0xd0 [iwlwifi] > [ 6.733350] ? __cfi_init_module+0x10/0x10 [iwlmvm] > [ 6.733364] init_module+0x22/0xff0 [iwlmvm] > [ 6.733378] ? __cfi_init_module+0x10/0x10 [iwlmvm] > [ 6.733392] do_one_initcall+0x129/0x380 > [ 6.733395] ? idr_alloc_cyclic+0x148/0x1e0 > [ 6.733397] ? security_kernfs_init_security+0x41/0x80 > [ 6.733399] ? __kernfs_new_node+0x1be/0x250 > [ 6.733401] ? preempt_count_add+0x55/0xb0 > [ 6.733404] ? up_write+0x4a/0xe0 > [ 6.733406] ? preempt_count_add+0x55/0xb0 > [ 6.733408] ? sysvec_call_function+0xa4/0xb0 > [ 6.733410] ? asm_sysvec_call_function+0x1a/0x20 > [ 6.733411] ? free_unref_page_prepare+0xf3/0x410 > [ 6.733413] ? preempt_count_add+0x62/0xb0 > [ 6.733415] ? _raw_spin_trylock+0x19/0x60 > [ 6.733417] ? _raw_spin_unlock+0x11/0x30 > [ 6.733419] ? __kmem_cache_free+0x29a/0x3c0 > [ 6.733421] ? vfree+0xd2/0x150 > [ 6.733422] ? slab_post_alloc_hook+0x76/0x3d0 > [ 6.733425] ? do_init_module+0x3f/0x230 > [ 6.733427] ? __kmem_cache_alloc_node+0x1fe/0x2f0 > [ 6.733430] do_init_module+0x7a/0x230 > [ 6.733432] __se_sys_init_module+0x1a0/0x220 > [ 6.733435] do_syscall_64+0x7a/0x100 > [ 6.733438] ? syscall_exit_to_user_mode+0x2d/0x1d0 > [ 6.733440] ? do_syscall_64+0x89/0x100 > [ 6.733442] ? do_user_addr_fault+0x4e7/0x680 > [ 6.733444] ? exc_page_fault+0x61/0x150 > [ 6.733446] entry_SYSCALL_64_after_hwframe+0x6e/0x76 > ``` > > I did try reverting the offending commit but the result did not compile and I did not want to dig deeper to identify any subsequent commits what would need reverting to fix compilation. > > If it's relevant, I'm building the kernel with Clang 17.0.4 toolchain by setting the LLVM=1 variable. CFI is enabled but I'm not sure if it's actually functional. See Bugzilla for the full thread. Anyway, I'm adding this regression to regzbot: #regzbot introduced: b6e3d1ba4fcf02 https://bugzilla.kernel.org/show_bug.cgi?id=218095 #regzbot title: new iwlwifi firmware statistics API triggers stack trace Thanks. [1]: https://bugzilla.kernel.org/show_bug.cgi?id=218095 -- An old man doll... just what I always wanted! - Clara