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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 55E23EB64D8 for ; Wed, 21 Jun 2023 12:58:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=bFJQDZv4+JuhFUvZ43gkrE24Z7kIbFOIXajmqYoBXi4=; b=xAc3FEC0P5lYWo vzUGdf+0J7akIeYp83PhH6VrBl81suXsxvN6yYjaIQRRRY6exWWHRBcLLoqxHrNmsmdWubZGyfIPO sRzQKdk74cB4sIp4T/2Lzz8tcplK7Llp+2vunbiwKY8mWq6TCZEJIxcruOkAZLKp3fuynndcNBQV4 iATKnVI4Q3gPO+1t72cq/gF66zzPPQ0oZDEf2EX/ZkI6F6VxYKZS5XPZKedbBTawBgGAriklaOEf/ A7HcISQxOStJaRB3zyqr5sc8an+p3hkGmqmwE8xHC5LelUD77jLYJMN8vFIcfst4u3PTyrF6D/v3p Lz9CVt03wZV9qwaEMc5Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qBxP3-00EcHE-0a; Wed, 21 Jun 2023 12:57:41 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qBxOy-00EcG5-2t; Wed, 21 Jun 2023 12:57:39 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id E70BE2F4; Wed, 21 Jun 2023 05:58:12 -0700 (PDT) Received: from FVFF77S0Q05N (unknown [10.57.27.65]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id C1BF33F64C; Wed, 21 Jun 2023 05:57:26 -0700 (PDT) Date: Wed, 21 Jun 2023 13:57:21 +0100 From: Mark Rutland To: Naresh Kamboju Cc: Linux ARM , open list , linux-rpi-kernel@lists.infradead.org, Netdev , lkft-triage@lists.linaro.org, Arnd Bergmann , Dan Carpenter , Linus Walleij , Catalin Marinas , Will Deacon , Anshuman Khandual , Puranjay Mohan , Song Liu , Alexei Starovoitov Subject: Re: next: Rpi4: Unexpected kernel BRK exception at EL1 Message-ID: References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230621_055737_054156_9CC748A0 X-CRM114-Status: GOOD ( 13.84 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Jun 21, 2023 at 06:06:51PM +0530, Naresh Kamboju wrote: > Following boot warnings and crashes noticed on arm64 Rpi4 device running > Linux next-20230621 kernel. > > Reported-by: Linux Kernel Functional Testing > > boot log: > > [ 22.331748] Kernel text patching generated an invalid instruction > at 0xffff8000835d6580! > [ 22.340579] Unexpected kernel BRK exception at EL1 > [ 22.346141] Internal error: BRK handler: 00000000f2000100 [#1] PREEMPT SMP This indicates execution of AARCH64_BREAK_FAULT. That could be from dodgy arguments to aarch64_insn_gen_*(), or elsewhere, and given this is in the networking code I suspect this'll be related to BPF. Looking at next-20230621 I see commit: 49703aa2adfaff28 ("bpf, arm64: use bpf_jit_binary_pack_alloc") ... which changed the way BPF allocates memory, and has code that pads memory with a bunch of AARCH64_BREAK_FAULT, so it looks like that *might* be related. Are you able to bisect this? In the mean time, I've Cc'd the relevant BPF people to give them a heads-up. Thanks, Mark. > . > [ 22.353814] Modules linked in: hci_uart(+) brcmfmac(+) btqca > brcmutil btbcm vc4(+) cfg80211 bluetooth reset_raspberrypi > clk_raspberrypi crct10dif_ce raspberrypi_hwmon snd_soc_hdmi_codec cec > v3d bcm2711_thermal rfkill drm_display_helper drm_shmem_helper > pcie_brcmstb drm_dma_helper pwm_bcm2835 i2c_bcm2835 gpu_sched > drm_kms_helper fuse drm > [ 22.376947] vc4-drm gpu: bound fe004000.txp (ops vc4_txp_ops [vc4]) > [ 22.384754] CPU: 3 PID: 159 Comm: systemd-udevd Not tainted > 6.4.0-rc7-next-20230621 #1 > [ 22.384769] Hardware name: Raspberry Pi 4 Model B (DT) > [ 22.384776] pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) > [ 22.384789] pc : 0xffff8000835d6580 > [ 22.384798] lr : sk_filter_trim_cap+0x80/0x2a0 > [ 22.384825] sp : ffff800083cdb9d0 > [ 22.384831] x29: ffff800083cdb9d0 x28: 0000000000000000 x27: 0000000000000001 > [ 22.384853] x26: ffff000041ece000 x25: ffff0000423ac800 x24: ffff800083468e00 > [ 22.384872] x23: 0000000000000000 x22: ffff000044c41300 x21: 0000000000000001 > [ 22.384891] x20: ffff800083bed000 x19: ffff000044c41300 x18: 0000000000000000 > [ 22.384909] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000015798650 > [ 22.384928] x14: 414d003633373832 x13: 3332323d44455a49 x12: 4c414954494e495f > [ 22.384946] x11: 4345535500343331 x10: 343d4d554e514553 x9 : ffff80008124f500 > [ 22.384965] x8 : ffff800083cdb7d8 x7 : 0000000000000000 x6 : 0000000000000001 > [ 22.384983] x5 : ffff800082def000 x4 : ffff800082def2e8 x3 : 0000000000000000 > [ 22.385001] x2 : ffff8000835d657c x1 : ffff800083bed048 x0 : ffff000044c41300 > [ 22.385020] Call trace: > [ 22.385025] 0xffff8000835d6580 > [ 22.385033] netlink_broadcast+0x1f0/0x4e8 > [ 22.385047] netlink_sendmsg+0x318/0x420 > [ 22.385056] ____sys_sendmsg+0x1cc/0x2c8 > [ 22.385075] ___sys_sendmsg+0x88/0xf0 > [ 22.385084] __sys_sendmsg+0x70/0xd8 > [ 22.385093] __arm64_sys_sendmsg+0x2c/0x40 > [ 22.385102] invoke_syscall+0x50/0x128 > [ 22.385120] el0_svc_common.constprop.0+0xf4/0x120 > [ 22.385136] do_el0_svc+0x44/0xb8 > [ 22.385152] el0_svc+0x30/0x98 > [ 22.385163] el0t_64_sync_handler+0x13c/0x158 > [ 22.385174] el0t_64_sync+0x190/0x198 > [ 22.385190] Code: d4202000 d4202000 d4202000 910003c9 (d503201f) > [ 22.385199] ---[ end trace 0000000000000000 ]--- > [ 22.385206] note: systemd-udevd[159] exited with irqs disabled > [ 22.385378] note: systemd-udevd[159] exited with preempt_count 1 > [ 22.395083] uart-pl011 fe201000.serial: no DMA platform data > [ 22.427073] vc4-drm gpu: bound fe206000.pixelvalve (ops vc4_crtc_ops [vc4]) > [ 22.434295] ------------[ cut here ]------------ > [ 22.474787] Bluetooth: HCI UART protocol Marvell registered > [ 22.475105] Voluntary context switch within RCU read-side critical section! > [ 22.475129] WARNING: CPU: 3 PID: 159 at > kernel/rcu/tree_plugin.h:320 rcu_note_context_switch+0x458/0x530 > [ 22.553049] vc4-drm gpu: bound fe207000.pixelvalve (ops vc4_crtc_ops [vc4]) > [ 22.555403] Modules linked in: hci_uart(+) brcmfmac(+) btqca > brcmutil btbcm vc4(+) cfg80211 bluetooth reset_raspberrypi > clk_raspberrypi crct10dif_ce > [ 22.583877] vc4-drm gpu: bound fe20a000.pixelvalve (ops vc4_crtc_ops [vc4]) > [ 22.584920] raspberrypi_hwmon snd_soc_hdmi_codec > [ 22.614889] vc4-drm gpu: bound fe216000.pixelvalve (ops vc4_crtc_ops [vc4]) > [ 22.618972] cec v3d bcm2711_thermal rfkill drm_display_helper > drm_shmem_helper pcie_brcmstb drm_dma_helper pwm_bcm2835 i2c_bcm2835 > gpu_sched drm_kms_helper fuse drm > [ 22.666409] CPU: 3 PID: 159 Comm: systemd-udevd Tainted: G D > 6.4.0-rc7-next-20230621 #1 > [ 22.666424] Hardware name: Raspberry Pi 4 Model B (DT) > [ 22.666431] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) > [ 22.666443] pc : rcu_note_context_switch+0x458/0x530 > [ 22.666463] lr : rcu_note_context_switch+0x458/0x530 > [ 22.666478] sp : ffff800083cdb3a0 > [ 22.666483] x29: ffff800083cdb3a0 x28: ffff0000423acc08 x27: 0000000000000000 > [ 22.666506] x26: ffff00004205a080 x25: ffff80008146d7c8 x24: 0000000000000000 > [ 22.666525] x23: 0000000000000000 x22: ffff00004205a080 x21: ffff80008335dd18 > [ 22.666544] x20: ffff80008237d2c0 x19: ffff0000fb5f1140 x18: ffffffffffffffff > [ 22.666562] x17: 3035663432313830 x16: 3030386666666620 x15: 3a20397820333535 > [ 22.666581] x14: 3431356534353564 x13: 216e6f6974636573 x12: 206c616369746972 > [ 22.666600] x11: 6320656469732d64 x10: 6165722055435220 x9 : ffff80008012b740 > [ 22.752425] x8 : 6863746977732074 x7 : 7865746e6f632079 x6 : 7261746e756c6f56 > [ 22.759681] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000027 > [ 22.766935] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff00004205a080 > [ 22.774190] Call trace: > [ 22.776668] rcu_note_context_switch+0x458/0x530 > [ 22.781364] __schedule+0xb8/0xd78 > [ 22.784824] schedule+0x60/0x100 > [ 22.788105] netlink_table_grab.part.0+0x8c/0xf8 > [ 22.792801] netlink_release+0x5dc/0x6d8 > [ 22.796782] __sock_release+0x4c/0xc8 > [ 22.800505] sock_close+0x20/0x38 > [ 22.803872] __fput+0xbc/0x280 > [ 22.806979] ____fput+0x18/0x30 > [ 22.810172] task_work_run+0x78/0xd8 > [ 22.813802] do_exit+0x2f8/0x9a8 > [ 22.817085] make_task_dead+0xa4/0x1a8 > [ 22.820896] die+0x254/0x260 > [ 22.823819] arm64_notify_die+0xbc/0xe0 > [ 22.827712] do_debug_exception+0xe0/0x118 > [ 22.831876] el1_dbg+0x70/0x90 > [ 22.834975] el1h_64_sync_handler+0xc8/0xe8 > [ 22.839222] el1h_64_sync+0x64/0x68 > [ 22.842761] 0xffff8000835d6580 > [ 22.845949] netlink_broadcast+0x1f0/0x4e8 > [ 22.850105] netlink_sendmsg+0x318/0x420 > [ 22.854084] ____sys_sendmsg+0x1cc/0x2c8 > [ 22.858072] ___sys_sendmsg+0x88/0xf0 > [ 22.861788] __sys_sendmsg+0x70/0xd8 > [ 22.865414] __arm64_sys_sendmsg+0x2c/0x40 > [ 22.869571] invoke_syscall+0x50/0x128 > [ 22.873383] el0_svc_common.constprop.0+0xf4/0x120 > [ 22.878251] do_el0_svc+0x44/0xb8 > [ 22.881621] el0_svc+0x30/0x98 > [ 22.884721] el0t_64_sync_handler+0x13c/0x158 > [ 22.889144] el0t_64_sync+0x190/0x198 > [ 22.892860] ---[ end trace 0000000000000000 ]--- > > > Links: > - https://lkft.validation.linaro.org/scheduler/job/6531518#L886 > - https://qa-reports.linaro.org/lkft/linux-next-master-sanity/build/next-20230621/testrun/17697990/suite/log-parser-test/tests/ > - https://qa-reports.linaro.org/lkft/linux-next-master-sanity/build/next-20230621/testrun/17697990/suite/log-parser-test/test/check-kernel-warning/log > > metadata: > git_ref: master > git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next > git_sha: 15e71592dbae49a674429c618a10401d7f992ac3 > git_describe: next-20230621 > kernel_version: 6.4.0-rc7 > kernel-config: > https://storage.tuxsuite.com/public/linaro/lkft/builds/2RVA7srTtdxlVq1QVEgrzc0AAKp/config > artifact-location: > https://storage.tuxsuite.com/public/linaro/lkft/builds/2RVA7srTtdxlVq1QVEgrzc0AAKp/ > toolchain: gcc-11 > > > -- > Linaro LKFT > https://lkft.linaro.org _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel