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 11D58C433FE for ; Sun, 1 May 2022 09:02:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344470AbiEAJF6 (ORCPT ); Sun, 1 May 2022 05:05:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40452 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344403AbiEAJFy (ORCPT ); Sun, 1 May 2022 05:05:54 -0400 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3A4B5694A0 for ; Sun, 1 May 2022 02:02:29 -0700 (PDT) Received: by mail-il1-f198.google.com with SMTP id m11-20020a056e020deb00b002cbde7e7dcfso6023119ilj.2 for ; Sun, 01 May 2022 02:02:29 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=P+O7ufqa93FBYiLQsa6nwfl7FdghLuWW8u1OubTNuYI=; b=EHoRG9YHqjSiGgg+DU2/pP6HmCW56grdLhycPEquQ5z9TA8vgG9lO9EU1LGHNOvich PDtw7k0mc1rNnjDf7yZd3iwi5whejsAsaufAMoyt7a8XJC3xrrmUZxu2OTi0aQCaTX8K 3zmCxDXICbjENF+Ohrs7UTjCNzUC4Npxv4QTMh/7wOdGIR4SkDHkiXYDCqqeyRLpIod3 qkrC5oqrCVPFx4aeddFFWgcfTyq32O2Bm4wG88a1ZSOAS/8AsxjuY1AGVbhDAugXA4jF Kl9dy8m516z+jPCKaAAVdAhtnzqMqXppDKVXhkoY0YvLO4+IQYeG0PsAwtwXqe4/LMAc Av8A== X-Gm-Message-State: AOAM533U9h2+qFZ3RhyF0BRzFKnG5AODpOsyDeApFDzpzLCZ+l6ZjavK 58APesH9gbmnRA7TbUngaR5ECYnB96ZS5x4Us34Wf5HjInu5 X-Google-Smtp-Source: ABdhPJzhyHTsyWv402caixLvYEVtRf13gwiTTXTH49NP3qoe21UZLQRQFSKjvg2ABwe+hchGf6oZ4NLykskFrc0aG0RZ5qch25H2 MIME-Version: 1.0 X-Received: by 2002:a05:6e02:2148:b0:2cd:8c85:b5c0 with SMTP id d8-20020a056e02214800b002cd8c85b5c0mr2738688ilv.249.1651395748245; Sun, 01 May 2022 02:02:28 -0700 (PDT) Date: Sun, 01 May 2022 02:02:28 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f537cc05ddef88db@google.com> Subject: [syzbot] BUG: Bad page map (5) From: syzbot To: akpm@linux-foundation.org, andrii@kernel.org, ast@kernel.org, bigeasy@linutronix.de, bpf@vger.kernel.org, brauner@kernel.org, daniel@iogearbox.net, david@redhat.com, ebiederm@xmission.com, john.fastabend@gmail.com, kafai@fb.com, kpsingh@kernel.org, linux-kernel@vger.kernel.org, luto@kernel.org, netdev@vger.kernel.org, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, yhs@fb.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 0966d385830d riscv: Fix auipc+jalr relocation range checks git tree: git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes console output: https://syzkaller.appspot.com/x/log.txt?x=10e1526cf00000 kernel config: https://syzkaller.appspot.com/x/.config?x=6295d67591064921 dashboard link: https://syzkaller.appspot.com/bug?extid=915f3e317adb0e85835f compiler: riscv64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: riscv64 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+915f3e317adb0e85835f@syzkaller.appspotmail.com netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 BUG: Bad page map in process syz-executor.0 pte:ffffaf80215a00f0 pmd:285e7c01 addr:00007fffbd3e6000 vm_flags:100400fb anon_vma:0000000000000000 mapping:ffffaf800ab1e058 index:3c file:kcov fault:0x0 mmap:kcov_mmap readpage:0x0 CPU: 1 PID: 2051 Comm: syz-executor.0 Not tainted 5.17.0-rc1-syzkaller-00002-g0966d385830d #0 Hardware name: riscv-virtio,qemu (DT) Call Trace: [] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:113 [] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:119 [] __dump_stack lib/dump_stack.c:88 [inline] [] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:106 [] dump_stack+0x1c/0x24 lib/dump_stack.c:113 [] print_bad_pte+0x3d4/0x4a0 mm/memory.c:563 [] vm_normal_page+0x20c/0x22a mm/memory.c:626 [] copy_present_pte mm/memory.c:949 [inline] [] copy_pte_range mm/memory.c:1074 [inline] [] copy_pmd_range mm/memory.c:1160 [inline] [] copy_pud_range mm/memory.c:1197 [inline] [] copy_p4d_range mm/memory.c:1221 [inline] [] copy_page_range+0x828/0x236c mm/memory.c:1294 [] dup_mmap kernel/fork.c:612 [inline] [] dup_mm+0xb5c/0xe10 kernel/fork.c:1451 [] copy_mm kernel/fork.c:1503 [inline] [] copy_process+0x25da/0x3c34 kernel/fork.c:2164 [] kernel_clone+0xee/0x920 kernel/fork.c:2555 [] __do_sys_clone+0xf2/0x12e kernel/fork.c:2672 [] sys_clone+0x32/0x44 kernel/fork.c:2640 [] ret_from_syscall+0x0/0x2 BUG: Bad page map in process syz-executor.0 pte:ffffffff801110e4 pmd:285e7c01 addr:00007fffbd3e7000 vm_flags:100400fb anon_vma:0000000000000000 mapping:ffffaf800ab1e058 index:3d file:kcov fault:0x0 mmap:kcov_mmap readpage:0x0 CPU: 1 PID: 2051 Comm: syz-executor.0 Tainted: G B 5.17.0-rc1-syzkaller-00002-g0966d385830d #0 Hardware name: riscv-virtio,qemu (DT) Call Trace: [] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:113 [] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:119 [] __dump_stack lib/dump_stack.c:88 [inline] [] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:106 [] dump_stack+0x1c/0x24 lib/dump_stack.c:113 [] print_bad_pte+0x3d4/0x4a0 mm/memory.c:563 [] vm_normal_page+0x20c/0x22a mm/memory.c:626 [] copy_present_pte mm/memory.c:949 [inline] [] copy_pte_range mm/memory.c:1074 [inline] [] copy_pmd_range mm/memory.c:1160 [inline] [] copy_pud_range mm/memory.c:1197 [inline] [] copy_p4d_range mm/memory.c:1221 [inline] [] copy_page_range+0x828/0x236c mm/memory.c:1294 [] dup_mmap kernel/fork.c:612 [inline] [] dup_mm+0xb5c/0xe10 kernel/fork.c:1451 [] copy_mm kernel/fork.c:1503 [inline] [] copy_process+0x25da/0x3c34 kernel/fork.c:2164 [] kernel_clone+0xee/0x920 kernel/fork.c:2555 [] __do_sys_clone+0xf2/0x12e kernel/fork.c:2672 [] sys_clone+0x32/0x44 kernel/fork.c:2640 [] ret_from_syscall+0x0/0x2 BUG: Bad page map in process syz-executor.0 pte:ffffffff801110e4 pmd:285e7c01 addr:00007fffbd3ef000 vm_flags:100400fb anon_vma:0000000000000000 mapping:ffffaf800ab1e058 index:45 file:kcov fault:0x0 mmap:kcov_mmap readpage:0x0 CPU: 1 PID: 2051 Comm: syz-executor.0 Tainted: G B 5.17.0-rc1-syzkaller-00002-g0966d385830d #0 Hardware name: riscv-virtio,qemu (DT) Call Trace: [] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:113 [] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:119 [] __dump_stack lib/dump_stack.c:88 [inline] [] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:106 [] dump_stack+0x1c/0x24 lib/dump_stack.c:113 [] print_bad_pte+0x3d4/0x4a0 mm/memory.c:563 [] vm_normal_page+0x20c/0x22a mm/memory.c:626 [] copy_present_pte mm/memory.c:949 [inline] [] copy_pte_range mm/memory.c:1074 [inline] [] copy_pmd_range mm/memory.c:1160 [inline] [] copy_pud_range mm/memory.c:1197 [inline] [] copy_p4d_range mm/memory.c:1221 [inline] [] copy_page_range+0x828/0x236c mm/memory.c:1294 [] dup_mmap kernel/fork.c:612 [inline] [] dup_mm+0xb5c/0xe10 kernel/fork.c:1451 [] copy_mm kernel/fork.c:1503 [inline] [] copy_process+0x25da/0x3c34 kernel/fork.c:2164 [] kernel_clone+0xee/0x920 kernel/fork.c:2555 [] __do_sys_clone+0xf2/0x12e kernel/fork.c:2672 [] sys_clone+0x32/0x44 kernel/fork.c:2640 [] ret_from_syscall+0x0/0x2 BUG: Bad page map in process syz-executor.0 pte:41b58ab3 pmd:285e7c01 addr:00007fffbd3f4000 vm_flags:100400fb anon_vma:0000000000000000 mapping:ffffaf800ab1e058 index:4a file:kcov fault:0x0 mmap:kcov_mmap readpage:0x0 CPU: 1 PID: 2051 Comm: syz-executor.0 Tainted: G B 5.17.0-rc1-syzkaller-00002-g0966d385830d #0 Hardware name: riscv-virtio,qemu (DT) Call Trace: [] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:113 [] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:119 [] __dump_stack lib/dump_stack.c:88 [inline] [] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:106 [] dump_stack+0x1c/0x24 lib/dump_stack.c:113 [] print_bad_pte+0x3d4/0x4a0 mm/memory.c:563 [] vm_normal_page+0x20c/0x22a mm/memory.c:626 [] copy_present_pte mm/memory.c:949 [inline] [] copy_pte_range mm/memory.c:1074 [inline] [] copy_pmd_range mm/memory.c:1160 [inline] [] copy_pud_range mm/memory.c:1197 [inline] [] copy_p4d_range mm/memory.c:1221 [inline] [] copy_page_range+0x828/0x236c mm/memory.c:1294 [] dup_mmap kernel/fork.c:612 [inline] [] dup_mm+0xb5c/0xe10 kernel/fork.c:1451 [] copy_mm kernel/fork.c:1503 [inline] [] copy_process+0x25da/0x3c34 kernel/fork.c:2164 [] kernel_clone+0xee/0x920 kernel/fork.c:2555 [] __do_sys_clone+0xf2/0x12e kernel/fork.c:2672 [] sys_clone+0x32/0x44 kernel/fork.c:2640 [] ret_from_syscall+0x0/0x2 BUG: Bad page map in process syz-executor.0 pte:ffffffff8451f630 pmd:285e7c01 addr:00007fffbd3f5000 vm_flags:100400fb anon_vma:0000000000000000 mapping:ffffaf800ab1e058 index:4b file:kcov fault:0x0 mmap:kcov_mmap readpage:0x0 CPU: 1 PID: 2051 Comm: syz-executor.0 Tainted: G B 5.17.0-rc1-syzkaller-00002-g0966d385830d #0 Hardware name: riscv-virtio,qemu (DT) Call Trace: [] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:113 [] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:119 [] __dump_stack lib/dump_stack.c:88 [inline] [] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:106 [] dump_stack+0x1c/0x24 lib/dump_stack.c:113 [] print_bad_pte+0x3d4/0x4a0 mm/memory.c:563 [] vm_normal_page+0x20c/0x22a mm/memory.c:626 [] copy_present_pte mm/memory.c:949 [inline] [] copy_pte_range mm/memory.c:1074 [inline] [] copy_pmd_range mm/memory.c:1160 [inline] [] copy_pud_range mm/memory.c:1197 [inline] [] copy_p4d_range mm/memory.c:1221 [inline] [] copy_page_range+0x828/0x236c mm/memory.c:1294 [] dup_mmap kernel/fork.c:612 [inline] [] dup_mm+0xb5c/0xe10 kernel/fork.c:1451 [] copy_mm kernel/fork.c:1503 [inline] [] copy_process+0x25da/0x3c34 kernel/fork.c:2164 [] kernel_clone+0xee/0x920 kernel/fork.c:2555 [] __do_sys_clone+0xf2/0x12e kernel/fork.c:2672 [] sys_clone+0x32/0x44 kernel/fork.c:2640 [] ret_from_syscall+0x0/0x2 Unable to handle kernel paging request at virtual address ffffaf847c9ffff8 Oops [#1] Modules linked in: CPU: 1 PID: 2051 Comm: syz-executor.0 Tainted: G B 5.17.0-rc1-syzkaller-00002-g0966d385830d #0 Hardware name: riscv-virtio,qemu (DT) epc : __nr_to_section include/linux/mmzone.h:1396 [inline] epc : __pfn_to_section include/linux/mmzone.h:1480 [inline] epc : pfn_swap_entry_to_page include/linux/swapops.h:252 [inline] epc : copy_nonpresent_pte mm/memory.c:798 [inline] epc : copy_pte_range mm/memory.c:1053 [inline] epc : copy_pmd_range mm/memory.c:1160 [inline] epc : copy_pud_range mm/memory.c:1197 [inline] epc : copy_p4d_range mm/memory.c:1221 [inline] epc : copy_page_range+0x1ade/0x236c mm/memory.c:1294 ra : __nr_to_section include/linux/mmzone.h:1396 [inline] ra : __pfn_to_section include/linux/mmzone.h:1480 [inline] ra : pfn_swap_entry_to_page include/linux/swapops.h:252 [inline] ra : copy_nonpresent_pte mm/memory.c:798 [inline] ra : copy_pte_range mm/memory.c:1053 [inline] ra : copy_pmd_range mm/memory.c:1160 [inline] ra : copy_pud_range mm/memory.c:1197 [inline] ra : copy_p4d_range mm/memory.c:1221 [inline] ra : copy_page_range+0x1ade/0x236c mm/memory.c:1294 epc : ffffffff803dce04 ra : ffffffff803dce04 sp : ffffaf80215a3680 gp : ffffffff85863ac0 tp : ffffaf8007409840 t0 : ffffaf80215a3830 t1 : fffff5ef042b4705 t2 : 00007fff83b1f010 s0 : ffffaf80215a38e0 s1 : ffffffff80110fdc a0 : ffffaf847c9ffff8 a1 : 0000000000000007 a2 : 1ffff5f08f93ffff a3 : ffffffff803dce04 a4 : 0000000000000000 a5 : ffffaf847c9ffff8 a6 : 0000000000f00000 a7 : ffffaf80215a382f s2 : ffffaf802159ffb0 s3 : ffffaf800f182fb0 s4 : 0000000000000000 s5 : 7c1ffffffff00221 s6 : 001ffffffff00221 s7 : ffffaf847c9ffff8 s8 : 000000000000001f s9 : 00007fffbd400000 s10: ffffaf800e521840 s11: 00007fffbd3f6000 t3 : 000000000001fffe t4 : fffff5ef042b4704 t5 : fffff5ef042b4706 t6 : 000000000002463c status: 0000000000000120 badaddr: ffffaf847c9ffff8 cause: 000000000000000d [] dup_mmap kernel/fork.c:612 [inline] [] dup_mm+0xb5c/0xe10 kernel/fork.c:1451 [] copy_mm kernel/fork.c:1503 [inline] [] copy_process+0x25da/0x3c34 kernel/fork.c:2164 [] kernel_clone+0xee/0x920 kernel/fork.c:2555 [] __do_sys_clone+0xf2/0x12e kernel/fork.c:2672 [] sys_clone+0x32/0x44 kernel/fork.c:2640 [] ret_from_syscall+0x0/0x2 ---[ end trace 0000000000000000 ]--- --- This report is generated by a bot. 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