From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ed1-f70.google.com (mail-ed1-f70.google.com [209.85.208.70]) by kanga.kvack.org (Postfix) with ESMTP id BA8EC6B000C for ; Wed, 18 Jul 2018 10:31:04 -0400 (EDT) Received: by mail-ed1-f70.google.com with SMTP id g11-v6so1938184edi.8 for ; Wed, 18 Jul 2018 07:31:04 -0700 (PDT) Received: from mx1.molgen.mpg.de (mx3.molgen.mpg.de. [141.14.17.11]) by mx.google.com with ESMTPS id y19-v6si305334edm.267.2018.07.18.07.31.02 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 18 Jul 2018 07:31:02 -0700 (PDT) From: Paul Menzel Subject: general protection fault with prefetch_freepointer Message-ID: <333cfb75-1769-c67f-c56f-c9458368751a@molgen.mpg.de> Date: Wed, 18 Jul 2018 16:31:00 +0200 MIME-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="------------ms040508060408000908050606" Sender: owner-linux-mm@kvack.org List-ID: To: Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org This is a cryptographically signed message in MIME format. --------------ms040508060408000908050606 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable Dear Linux, Loading the amdgpu module on Ryzen 3 2{2,4}00G (Raven) systems sometimes causes a general protection fault [1]. At least on my system I am unable to reliably reproduce the issue. ``` [ 35.265941] kfd kfd: kgd2kfd_probe failed [ 35.537445] general protection fault: 0000 [#1] SMP NOPTI [ 35.543209] CPU: 0 PID: 367 Comm: systemd-udevd Not tainted 4.18.0-rc5= + #1 [ 35.550371] Hardware name: MSI MS-7A37/B350M MORTAR (MS-7A37), BIOS 1.= G1 05/17/2018 [ 35.558562] RIP: 0010:prefetch_freepointer+0x10/0x20 [ 35.563881] Code: 89 d3 e8 c3 fe 4a 00 85 c0 0f 85 31 75 00 00 48 83 c= 4 08 5b 5d 41 5c 41 5d c3 0f 1f 44 00 00 48 85 f6 74 13 8b 47 20 48 01 c6= <48> 33 36 48 33 b7 38 01 00 00 0f 18 0e c3 66 90 0f 1f 44 00 00 48=20 [ 35.584215] RSP: 0018:ffff9c3181f77560 EFLAGS: 00010202 [ 35.589849] RAX: 0000000000000000 RBX: 4b2c8be0a60f6ab9 RCX: 000000000= 0000ccc [ 35.597492] RDX: 0000000000000ccb RSI: 4b2c8be0a60f6ab9 RDI: ffff8d5b1= e406e80 [ 35.605166] RBP: ffff8d5b1e406e80 R08: ffff8d5b1e824f00 R09: ffffffffc= 0a45423 [ 35.612808] R10: fffff1b60fff64c0 R11: ffff9c3181f77520 R12: 000000000= 06080c0 [ 35.620451] R13: 0000000000000230 R14: ffff8d5b1e406e80 R15: ffff8d5b0= c304400 [ 35.628116] FS: 00007fb194e4b8c0(0000) GS:ffff8d5b1e800000(0000) knlG= S:0000000000000000 [ 35.636771] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.642931] CR2: 000055c0661d60d0 CR3: 000000040b9ee000 CR4: 000000000= 03406f0 [ 35.650566] Call Trace: [ 35.653198] kmem_cache_alloc_trace+0xb5/0x1c0 [ 35.658077] ? dal_ddc_service_create+0x38/0x110 [amdgpu] [ 35.663962] dal_ddc_service_create+0x38/0x110 [amdgpu] ``` Do you have more ideas, how to debug that? The progress in bug report kind of stalled as people have run out of ideas. I thought about a hardware/firmware problem, but then searching for the error, I found the stack trace with Linux 4.17.2 from Fedora [2][3]. This looks a little similar, but can of course be something totally different. ``` general protection fault: 0000 [#1] SMP PTI Modules linked in: sctp netlink_diag nfsv3 nfnetlink_queue nfnetlink_log = nfnetlink cfg80211 rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache rfcomm = fuse hidp xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv= 4 xt_conntrack tun devlink ebtable_filter ebtables ip6table_filter ip6_ta= bles iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_c= onntrack bridge stp llc bnep it87 hwmon_vid btrfs xor zstd_compress raid6= _pq libcrc32c zstd_decompress xxhash intel_rapl x86_pkg_temp_thermal inte= l_powerclamp coretemp kvm_intel kvm gpio_ich iTCO_wdt iTCO_vendor_support= ppdev irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel intel_= cstate intel_uncore intel_rapl_perf btusb btrtl btbcm btintel bluetooth s= nd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_int= el snd_hda_codec ecdh_generic rfkill snd_hda_core snd_hwdep snd_seq snd_seq= _device snd_pcm snd_timer i2c_i801 lpc_ich mei_me mei shpchp snd soundcor= e parport_pc parport nfsd binfmt_misc nfs_acl lockd auth_rpcgss grace sun= rpc i915 crc32c_intel i2c_algo_bit drm_kms_helper serio_raw drm r8169 sat= a_via mii video CPU: 0 PID: 2690 Comm: nfsd Not tainted 4.17.2-200.fc28.x86_64 #1 Hardware name: Gigabyte Technology Co., Ltd. H81M-S2PV/H81M-S2PV, BIOS F8= 06/19/2014 RIP: 0010:prefetch_freepointer+0x10/0x20 RSP: 0018:ffffa33fca4ebc58 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 49f929d076783c7f RCX: 0000000000000f2a RDX: 0000000000000f29 RSI: 49f929d076783c7f RDI: ffff8da88c9ffe00 RBP: ffff8da88c9ffe00 R08: ffff8da89ee2b100 R09: 0000000000000004 R10: 0000000000000000 R11: 000000000000002c R12: 00000000014080c0 R13: ffffffffc07e0ac1 R14: ffff8da4bc958ae1 R15: ffff8da88c9ffe00 FS: 0000000000000000(0000) GS:ffff8da89ee00000(0000) knlGS:0000000000000= 000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002001a1783000 CR3: 000000012920a001 CR4: 00000000000606f0 Call Trace: kmem_cache_alloc+0xb4/0x1d0 ? nfsd4_free_file_rcu+0x20/0x20 [nfsd] ``` Help on how to debug this is appreciated. Kind regards, Paul [1]: https://bugs.freedesktop.org/show_bug.cgi?id=3D105684 [2]: https://bugzilla.redhat.com/show_bug.cgi?id=3D1600482 [3]: https://retrace.fedoraproject.org/faf/reports/2243945/ --------------ms040508060408000908050606 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCC EFowggUSMIID+qADAgECAgkA4wvV+K8l2YEwDQYJKoZIhvcNAQELBQAwgYIxCzAJBgNVBAYT AkRFMSswKQYDVQQKDCJULVN5c3RlbXMgRW50ZXJwcmlzZSBTZXJ2aWNlcyBHbWJIMR8wHQYD VQQLDBZULVN5c3RlbXMgVHJ1c3QgQ2VudGVyMSUwIwYDVQQDDBxULVRlbGVTZWMgR2xvYmFs Um9vdCBDbGFzcyAyMB4XDTE2MDIyMjEzMzgyMloXDTMxMDIyMjIzNTk1OVowgZUxCzAJBgNV BAYTAkRFMUUwQwYDVQQKEzxWZXJlaW4genVyIEZvZXJkZXJ1bmcgZWluZXMgRGV1dHNjaGVu IEZvcnNjaHVuZ3NuZXR6ZXMgZS4gVi4xEDAOBgNVBAsTB0RGTi1QS0kxLTArBgNVBAMTJERG 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