From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 6B50E1A38F0 for ; Fri, 29 Mar 2024 12:43:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711716231; cv=none; b=L+fiwI9Lxu9TDDVHW06G5jMBSHU1YcJ41xw6utjXoKaOtBkTzTZtgMbBcaCNPyLDxyK79JsnJy3A7lmvjB9MofFwv39gF3Rad+Zzu5sLWlOOPpScugIGoGQlcFQ9Bznv/J9tmzlUYNojn6w3xuU4LBHCarSai0Xu8gIoPI0tq/U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711716231; c=relaxed/simple; bh=gAJlPCL2QPpnU3Mp5oOSjKNNs3jyLnx5Eu4tGNFnFGU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=O+lfxO2XkCXHVgf94/w1j2bRwB+sRT/MQqFZebqkZ+2WcCA006fre7X0YmgvhHNaFXi+bAOg1vOkDSZ7FdpqCMG4UqwvnIye/TJIneDVPoGXTRh+j5gjVLuS7r5WTYUXk8l7Bk1BQk2qfKZrnXtTkJorxwVx+mIdgiq2ogxYms0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=wH32wfwm; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="wH32wfwm" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C4240C433B1; Fri, 29 Mar 2024 12:43:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1711716231; bh=gAJlPCL2QPpnU3Mp5oOSjKNNs3jyLnx5Eu4tGNFnFGU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=wH32wfwm7yB2bPaxCyHycIcu5pOhforkFnVRuS2N0pOcxQLf8wmdwUukh3DDSqDQZ HIBdFGIsHfWqzlcsuxFp3Xq8F/G6tEoGgmrSWJ6WZyknUBOs+q3HKlLnXf85DjDOdt 4+uB2bEgR8651GJ7NK7P6YSsTlkpqoZOkqLHaFbw= Date: Fri, 29 Mar 2024 13:43:39 +0100 From: Greg KH To: Thadeu Lima de Souza Cascardo Cc: stable@vger.kernel.org, Peter Zijlstra , Thomas Gleixner , Ingo Molnar , kernel-dev@igalia.com Subject: Re: [PATCH 5.15 0/5] Support static calls with LLVM-built kernels Message-ID: <2024032931-ascent-delicious-4466@gregkh> References: <20240313104255.1083365-1-cascardo@igalia.com> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240313104255.1083365-1-cascardo@igalia.com> On Wed, Mar 13, 2024 at 07:42:50AM -0300, Thadeu Lima de Souza Cascardo wrote: > Otherwise, we see warnings like this: > > [ 0.000000][ T0] ------------[ cut here ]------------ > [ 0.000000][ T0] unexpected static_call insn opcode 0xf at kvm_vcpu_reload_apic_access_page+0x17/0x30 > [ 0.000000][ T0] WARNING: CPU: 0 PID: 0 at arch/x86/kernel/static_call.c:88 __static_call_validate+0x68/0x70 > [ 0.000000][ T0] Modules linked in: > [ 0.000000][ T0] CPU: 0 PID: 0 Comm: swapper Not tainted 5.15.151-00083-gf200c7260296 #68 fe3cb25cf78cb710722bb5acd1cadddd35172924 > [ 0.000000][ T0] RIP: 0010:__static_call_validate+0x68/0x70 > [ 0.000000][ T0] Code: 0f b6 4a 04 81 f1 c0 00 00 00 09 c1 74 cc 80 3d be 2c 02 02 00 75 c3 c6 05 b5 2c 02 02 01 48 c7 c7 38 4f c3 82 e8 e8 c8 09 00 <0f> 0b c3 00 00 cc cc 00 53 48 89 fb 48 63 15 31 71 06 02 e8 b0 b8 > [ 0.000000][ T0] RSP: 0000:ffffffff82e03e70 EFLAGS: 00010046 ORIG_RAX: 0000000000000000 > [ 0.000000][ T0] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000002 > [ 0.000000][ T0] RDX: 0000000000000000 RSI: ffffffff82e03ce0 RDI: 0000000000000001 > [ 0.000000][ T0] RBP: 0000000000000001 R08: 00000000ffffffff R09: ffffffff82eaab70 > [ 0.000000][ T0] R10: ffffffff82e2e900 R11: 205d305420202020 R12: ffffffff82e51960 > [ 0.000000][ T0] R13: ffffffff81038987 R14: ffffffff81038987 R15: 0000000000000001 > [ 0.000000][ T0] FS: 0000000000000000(0000) GS:ffffffff83726000(0000) knlGS:0000000000000000 > [ 0.000000][ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 0.000000][ T0] CR2: ffff888000014be8 CR3: 00000000037b2000 CR4: 00000000000000a0 > [ 0.000000][ T0] Call Trace: > [ 0.000000][ T0] > [ 0.000000][ T0] ? __warn+0x75/0xe0 > [ 0.000000][ T0] ? report_bug+0x81/0xe0 > [ 0.000000][ T0] ? kvm_vcpu_reload_apic_access_page+0x17/0x30 > [ 0.000000][ T0] ? kvm_vcpu_reload_apic_access_page+0x17/0x30 > [ 0.000000][ T0] ? early_fixup_exception+0x44/0xa0 > [ 0.000000][ T0] ? early_idt_handler_common+0x2f/0x40 > [ 0.000000][ T0] ? kvm_vcpu_reload_apic_access_page+0x17/0x30 > [ 0.000000][ T0] ? kvm_vcpu_reload_apic_access_page+0x17/0x30 > [ 0.000000][ T0] ? __static_call_validate+0x68/0x70 > [ 0.000000][ T0] ? arch_static_call_transform+0x5c/0x90 > [ 0.000000][ T0] ? __static_call_init+0x1ec/0x230 > [ 0.000000][ T0] ? static_call_init+0x32/0x70 > [ 0.000000][ T0] ? setup_arch+0x36/0x4f0 > [ 0.000000][ T0] ? start_kernel+0x67/0x400 > [ 0.000000][ T0] ? secondary_startup_64_no_verify+0xb1/0xbb > [ 0.000000][ T0] > [ 0.000000][ T0] ---[ end trace 8c8589c01f370686 ]--- > Now queued up, thanks. greg k-h