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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6551CC433F5 for ; Fri, 29 Apr 2022 11:50:46 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id E89666B0071; Fri, 29 Apr 2022 07:50:45 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id E390E6B0073; Fri, 29 Apr 2022 07:50:45 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D27FF6B0074; Fri, 29 Apr 2022 07:50:45 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay.hostedemail.com [64.99.140.26]) by kanga.kvack.org (Postfix) with ESMTP id C24916B0071 for ; Fri, 29 Apr 2022 07:50:45 -0400 (EDT) Received: from smtpin15.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 9EA2C21217 for ; Fri, 29 Apr 2022 11:50:45 +0000 (UTC) X-FDA: 79409749650.15.6DA82AC Received: from mail-yw1-f178.google.com (mail-yw1-f178.google.com [209.85.128.178]) by imf29.hostedemail.com (Postfix) with ESMTP id C04C4120042 for ; Fri, 29 Apr 2022 11:50:41 +0000 (UTC) Received: by mail-yw1-f178.google.com with SMTP id 00721157ae682-2f7b815ac06so82607557b3.3 for ; Fri, 29 Apr 2022 04:50:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:from:date:message-id:subject:to:cc; bh=8+UiF4eHlVSNXG9RvheOzUYkvX3R2QPVHBEc5if+O5U=; b=nU1PwT70GBM3P+Ss4d4U5e3Sy2VUJx6cjyo6IPqlWSvm2KkGN+0ndVUQXJDUMBvwHv 3n+cKGN8J/IL3Mkr0zX0SB6R0qPKOlqgynb2D3t4JKwZmavRF7ylmpQUEUD14k3nKbVV YrnjN+O+DK62xWz0Cyk8Xe+tHxRAmmpdJ/wVh7zc61MipmrhByupXVs0+lz/6ANiwVCN efhydQzRl0jQr4IB03RBG6ncSJA+7z+dQum5A88NyA9JUHI2Dm0v0RN9z3kZYQXayn/Z B5MVEHhws+zD5NegoouuH27/UTIDFBiT0dJqQtbXXasVPL5KoKGrZ2GoCA8ssiAuEGzy 9mYg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc; bh=8+UiF4eHlVSNXG9RvheOzUYkvX3R2QPVHBEc5if+O5U=; b=djx8LIpzGk27ysDj8YBEGLgnfQ82Xfp+fnWA+iPo6YhWm27w1EbzSBzaEQpUDBcnCQ wBL3A0R5s51U4V8eWfpcSvS3MFnR9cLpDezE+iyrrTrFmrTuPXEF7chuttJu4WNiXCQg fpjr7zR6QTpaqsSgKYNdFcCjYDB1J/bD65oIBAZO24KNP1xUpZGizer2MpaFErebpXu8 MThqXNNr+xvOLPcx+NOidFIuqOoZrC5gg1oTRMAH1njf60s+iLcOzWPdDHL/M5+VVkBc 6geqbJDNGqLDt57tnu7vklpQ4NNADDohAC5Eu+INbaa+MHmB7Q7XupnpvFdjjrRaJTTL kCiQ== X-Gm-Message-State: AOAM532tMSSveqiRaRTDhSx7viXNZyqNOks19QXi2M6SUI1qa+rR1mdN p2wQd5vfRDco0oJXqMxa77gpJmclbENqffCYPWs1Xw== X-Google-Smtp-Source: ABdhPJylg5vSCuQ0OMqRstoTj4uABleME0hH8556DRyWoISrzMe/Kiee5tmmBavk0v3AymT+UTcW/YPzzoPu85aeC7o= X-Received: by 2002:a81:3ac2:0:b0:2f7:f777:a43 with SMTP id h185-20020a813ac2000000b002f7f7770a43mr23786579ywa.60.1651233044128; Fri, 29 Apr 2022 04:50:44 -0700 (PDT) MIME-Version: 1.0 From: Naresh Kamboju Date: Fri, 29 Apr 2022 17:20:33 +0530 Message-ID: Subject: [next] x86: BUG: kernel NULL pointer dereference, address: To: open list , Linux-Next Mailing List , linux-mm , lkft-triage@lists.linaro.org Cc: Stephen Rothwell , Baolin Wang , Mike Kravetz , Mina Almasry , Muchun Song , Andrew Morton , Arnd Bergmann , Rolf Eike Beer , Anshuman Khandual , linmiaohe@huawei.com, Christophe Leroy , David Hildenbrand , Peter Xu Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: C04C4120042 X-Stat-Signature: hig9rktogf9qqe99ko3q4opwye19fnk4 Authentication-Results: imf29.hostedemail.com; dkim=pass header.d=linaro.org header.s=google header.b=nU1PwT70; dmarc=pass (policy=none) header.from=linaro.org; spf=pass (imf29.hostedemail.com: domain of naresh.kamboju@linaro.org designates 209.85.128.178 as permitted sender) smtp.mailfrom=naresh.kamboju@linaro.org X-Rspam-User: X-HE-Tag: 1651233041-301811 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Following kernel BUG noticed on Linux next-20220428 on x86_64 while running selftests x86 fsgsbase_64 test cases. Reported-by: Linux Kernel Functional Testing Test log: ---------- # selftests: x86: fsgsbase_64 # [OK] GSBASE started at 1 # [RUN] Set GS = 0x7, read GSBASE # [OK] GSBASE reads as 0x1 with invalid GS # FSGSBASE instructions are enabled # [RUN] ARCH_SET_GS to 0x0 # [OK] GSBASE was set as expected (selector 0x0) # [OK] ARCH_GET_GS worked as expected (selector 0x0) # [RUN] ARCH_SET_GS to 0x1 # [OK] GSBASE was set as expected (selector 0x0) # [OK] ARCH_GET_GS worked as exp[ 199.295202] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 199.302779] #PF: supervisor read access in kernel mode [ 199.307918] #PF: error_code(0x0000) - not-present page [ 199.313057] PGD 8000000145f05067 P4D 8000000145f05067 PUD 145f04067 PMD 0 [ 199.319930] Oops: 0000 [#1] PREEMPT SMP PTI [ 199.324117] CPU: 1 PID: 2948 Comm: sysret_rip_64 Tainted: G K 5.18.0-rc4-next-20220428 #1 [ 199.333587] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.2 05/23/2018 [ 199.340972] RIP: 0010:copy_vma+0x61/0x220 [ 199.344983] Code: 48 89 45 d0 31 c0 49 8b 07 49 83 7f 60 00 48 89 45 b8 0f 84 47 01 00 00 48 8d 55 c8 4c 89 ee 4c 89 f7 4c 01 eb e8 2f ec ff ff <48> 39 18 72 7e 4d 8b 47 20 4d 8b 4f 58 6a 00 48 89 d9 41 ff b7 90 [ 199.363722] RSP: 0018:ffffacf8813bfca0 EFLAGS: 00010292 [ 199.368946] RAX: 0000000000000000 RBX: 00007fffffffe000 RCX: 0000000000000001 [ 199.376070] RDX: ffffffffffffffff RSI: ffff9c6d04959f00 RDI: ffffacf8813bfc38 [ 199.383193] RBP: ffffacf8813bfcf0 R08: 000000000000000b R09: 000000000000000b [ 199.390317] R10: ffff9c6d03e392f0 R11: 0000000000000058 R12: ffffacf8813bfd48 [ 199.397441] R13: 00007fffffffd000 R14: ffff9c6ccc331d40 R15: ffff9c6d03e392f0 [ 199.404566] FS: 00007fce67a16b80(0000) GS:ffff9c6e2fa80000(0000) knlGS:0000000000000000 [ 199.412644] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 199.418391] CR2: 0000000000000000 CR3: 0000000156398002 CR4: 00000000003706e0 [ 199.425521] DR0: 00000000006021a8 DR1: 0000000000400ae9 DR2: 0000000000000000 [ 199.432647] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 [ 199.439778] Call Trace: [ 199.442221] [ 199.444320] move_vma+0x131/0x4a0 [ 199.447644] __do_sys_mremap+0x35c/0x890 [ 199.451578] ? syscall_trace_enter.constprop.0+0x176/0x230 [ 199.457068] __x64_sys_mremap+0x25/0x30 [ 199.460907] do_syscall_64+0x5c/0x80 [ 199.464486] ? do_syscall_64+0x69/0x80 [ 199.468239] ? syscall_exit_to_user_mode+0x3a/0x50 [ 199.473031] ? do_syscall_64+0x69/0x80 [ 199.476786] ? asm_exc_general_protection+0x8/0x30 [ 199.481576] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 199.486631] RIP: 0033:0x7fce66f10bda [ 199.490208] Code: 73 01 c3 48 8b 0d be a2 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 19 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 8e a2 2b 00 f7 d8 64 89 01 48 [ 199.508952] RSP: 002b:00007ffd71e44b28 EFLAGS: 00000206 ORIG_RAX: 0000000000000019 [ 199.516511] RAX: ffffffffffffffda RBX: 00007fffffffd000 RCX: 00007fce66f10bda [ 199.523634] RDX: 0000000000001000 RSI: 0000000000001000 RDI: 0000000000402000 [ 199.530757] RBP: 0000000000000001 R08: 00007fffffffd000 R09: 00007ffd71e449fc [ 199.537883] R10: 0000000000000003 R11: 0000000000000206 R12: 0000000000000001 [ 199.545016] R13: 00007ffd71e44ce0 R14: 0000000000000000 R15: 0000000000000000 [ 199.552150] [ 199.554341] Modules linked in: x86_pkg_temp_thermal fuse [last unloaded: test_klp_livepatch] [ 199.562772] CR2: 0000000000000000 ected (selector [ 199.566084] ---[ end trace 0000000000000000 ]--- [ 199.566085] RIP: 0010:copy_vma+0x61/0x220 0x0) # [RUN] AR[ 199.566088] Code: 48 89 45 d0 31 c0 49 8b 07 49 83 7f 60 00 48 89 45 b8 0f 84 47 01 00 00 48 8d 55 c8 4c 89 ee 4c 89 f7 4c 01 eb e8 2f ec ff ff <48> 39 18 72 7e 4d 8b 47 20 4d 8b 4f 58 6a 00 48 89 d9 41 ff b7 90 [ 199.566089] RSP: 0018:ffffacf8813bfca0 EFLAGS: 00010292 CH_SET_GS to 0x2[ 199.566090] RAX: 0000000000000000 RBX: 00007fffffffe000 RCX: 0000000000000001 [ 199.566091] RDX: ffffffffffffffff RSI: ffff9c6d04959f00 RDI: ffffacf8813bfc38 00000000 # [OK][ 199.566092] RBP: ffffacf8813bfcf0 R08: 000000000000000b R09: 000000000000000b GSBASE was set [ 199.566092] R10: ffff9c6d03e392f0 R11: 0000000000000058 R12: ffffacf8813bfd48 [ 199.566093] R13: 00007fffffffd000 R14: ffff9c6ccc331d40 R15: ffff9c6d03e392f0 as expected (sel[ 199.566094] FS: 00007fce67a16b80(0000) GS:ffff9c6e2fa80000(0000) knlGS:0000000000000000 [ 199.566095] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 ector 0x0) # [O[ 199.566096] CR2: 0000000000000000 CR3: 0000000156398002 CR4: 00000000003706e0 [ 199.566097] DR0: 00000000006021a8 DR1: 0000000000400ae9 DR2: 0000000000000000 K] ARCH_GET_GS w[ 199.566098] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 orked as expected (selector 0x0) # [RUN] ARCH_SET_GS to 0x0 # [OK] GSBASE was set as expected (selector 0x0) # [OK] ARCH_GET_GS worked as expected (selector 0x0) metadata: git_ref: master git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next git_sha: bdc61aad77faf67187525028f1f355eff3849f22 git_describe: next-20220428 kernel_version: 5.18.0-rc4 kernel-config: https://builds.tuxbuild.com/28Pz4BMeY7pEp28bl5hC46lwjpe/config vmlinux : https://builds.tuxbuild.com/28Pz4BMeY7pEp28bl5hC46lwjpe/vmlinux.xz System.map : https://builds.tuxbuild.com/28Pz4BMeY7pEp28bl5hC46lwjpe/System.map Reported-by: Linux Kernel Functional Testing -- Linaro LKFT https://lkft.linaro.org