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[23.128.96.18]) by mx.google.com with ESMTP id bg3si39682ejb.616.2020.10.14.08.58.23; Wed, 14 Oct 2020 08:58:45 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=haUlUbdF; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726496AbgJNKtb (ORCPT + 99 others); Wed, 14 Oct 2020 06:49:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53928 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725922AbgJNKtb (ORCPT ); Wed, 14 Oct 2020 06:49:31 -0400 Received: from mail-io1-xd41.google.com (mail-io1-xd41.google.com [IPv6:2607:f8b0:4864:20::d41]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E831DC061755 for ; Wed, 14 Oct 2020 03:49:30 -0700 (PDT) Received: by mail-io1-xd41.google.com with SMTP id g7so4299461iov.13 for ; Wed, 14 Oct 2020 03:49:30 -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=HgHUYfl/RqdxqpyW+AYcy5yFjZFOcQH7eO1Foilj7+M=; b=haUlUbdFu1nX6ivBcGnXd/sIrfe2L1qsMdVWShpufVqQ7p0owplfL1Z4v0KQPG/Xjj diCS/zQrPg/IYK8pftdkIKiG5kxSati1CEPX0Kw62Dsjh5pQKfz2xZjzGNteU6vLXX0T IWL1Ro/r26qkZxVYM0fCAy2LIzBgPQqNJ1siPtdSUkiwLUVcRVfuRn5tQDa4mr+FHYaT GBWXd/qOx2OkpyjdaqnRTTmS6DnQlcmzIen8DllsRNOO6d/okNB9NncyQP9PQ/N1H7cy 7ZqgoXmhVmF1MWKZvpbMX+S/imATcAifojuGbYmTGjsEGn8Vmv+6JVe5wCD+KKmBdurU heqA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc; bh=HgHUYfl/RqdxqpyW+AYcy5yFjZFOcQH7eO1Foilj7+M=; b=XywuEmzMI96x5+K5PPhD+rM/pnXOjOIQ1c/4T259Xc8x5zseV8xw69GEnRKORVfrn9 sgQJsnn090Li/ZMU+58lEcs/vrUsUtXEj8LF28b5Qh1lt0LexEYb5V1KhUsKi5dexJsu 8NKhv7b65z1TRpK3SUnLnv7eUNDc40b6k7X4b4Bh/Lh4QKcFhbLYrgfXzt0UShHC0d0s GD9jrD7XPSfcXpipuBhCO161VZQ24jSlUw2ZphYRlpTX3UrDKQJYePtms+epARQrEYpC d74BYEE9Huq/jVPqptcqbJyH6N9MYgTHcIfqN3FOCszeg2nB5d4lupv5Vc77KQMqeOAK dctQ== X-Gm-Message-State: AOAM533huaq1XkGc2vb04fOf5i288bHnjfFKDUCOxWVj4jHjZnHfqw+2 pGaSw4zC89g1zZNbeNqbiGFE48IVE06hJuFEh4mac5tbikFYvF0R X-Received: by 2002:a02:c785:: with SMTP id n5mr2574048jao.128.1602672570049; Wed, 14 Oct 2020 03:49:30 -0700 (PDT) MIME-Version: 1.0 From: Naresh Kamboju Date: Wed, 14 Oct 2020 16:19:18 +0530 Message-ID: Subject: BUG: KASAN: global-out-of-bounds in vprintk_store on x86_64 To: Linux-Next Mailing List , linux-mm , open list , lkft-triage@lists.linaro.org, LTP List Cc: Andrew Morton , Mike Rapoport , Stephen Rothwell , John Ogness , Petr Mladek , Sergey Senozhatsky , Rasmus Villemoes , Steven Rostedt , Linus Torvalds , Greg Kroah-Hartman , Thomas Gleixner Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org While testing LTP controllers testing on x86_64 KASAN enabled linux next 20201013 tag kernel this kernel BUG noticed. The oom-killer log also noticed while running tests. metadata: git branch: master git repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next git commit: f2fb1afc57304f9dd68c20a08270e287470af2eb git describe: next-20201013 make_kernelversion: 5.9.0 kernel-config: https://builds.tuxbuild.com/TXP6cqokP8BCYJrv7zf6kw/kernel.config steps to reproduce: ------------------------- # cd /opt/ltp # ./runltp -f controllers Crash log: -------------- [ 221.921944] oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=c,mems_allowed=0,oom_memcg=/0,task_memcg=in [ 221.922108] ================================================================== [ 221.922111] BUG: KASAN: global-out-of-bounds in vprintk_store+0x362/0x3d0 [ 221.922112] Write of size 2 at addr ffffffffba51dbcd by task memcg_test_1/11282 [ 221.922113] [ 221.922114] CPU: 1 PID: 11282 Comm: memcg_test_1 Not tainted 5.9.0-next-20201013 #1 [ 221.922116] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.0b 07/27/2017 [ 221.922116] Call Trace: [ 221.922117] dump_stack+0xa4/0xd9 [ 221.922118] print_address_description.constprop.0+0x21/0x210 [ 221.922119] ? _raw_write_lock_bh+0xe0/0xe0 [ 221.922120] ? vprintk_store+0x362/0x3d0 [ 221.922121] kasan_report.cold+0x37/0x7c [ 221.922122] ? vprintk_store+0x362/0x3d0 [ 221.922123] check_memory_region+0x18c/0x1f0 [ 221.922124] memcpy+0x3c/0x60 [ 221.922125] vprintk_store+0x362/0x3d0 [ 221.922125] ? __ia32_sys_syslog+0x50/0x50 [ 221.922126] ? _raw_spin_lock_irqsave+0x9b/0x100 [ 221.922127] ? _raw_spin_lock_irq+0xf0/0xf0 [ 221.922128] ? __kasan_check_write+0x14/0x20 [ 221.922129] vprintk_emit+0x8d/0x1f0 [ 221.922130] vprintk_default+0x1d/0x20 [ 221.922131] vprintk_func+0x5a/0x100 [ 221.922132] printk+0xb2/0xe3 [ 221.922133] ? swsusp_write.cold+0x189/0x189 [ 221.922134] ? kernfs_vfs_xattr_set+0x60/0x60 [ 221.922134] ? _raw_write_lock_bh+0xe0/0xe0 [ 221.922135] ? trace_hardirqs_on+0x38/0x100 [ 221.922136] pr_cont_kernfs_path.cold+0x49/0x4b [ 221.922137] mem_cgroup_print_oom_context.cold+0x74/0xc3 [ 221.922138] dump_header+0x340/0x3bf [ 221.922139] oom_kill_process.cold+0xb/0x10 [ 221.922140] out_of_memory+0x1e9/0x860 [ 221.922141] ? oom_killer_disable+0x210/0x210 [ 221.922142] mem_cgroup_out_of_memory+0x198/0x1c0 [ 221.922143] ? mem_cgroup_count_precharge_pte_range+0x250/0x250 [ 221.922144] try_charge+0xa9b/0xc50 [ 221.922145] ? arch_stack_walk+0x9e/0xf0 [ 221.922146] ? memory_high_write+0x230/0x230 [ 221.922146] ? avc_has_extended_perms+0x830/0x830 [ 221.922147] ? stack_trace_save+0x94/0xc0 [ 221.922148] ? stack_trace_consume_entry+0x90/0x90 [ 221.922149] __memcg_kmem_charge+0x73/0x120 [ 221.922150] ? cred_has_capability+0x10f/0x200 [ 221.922151] ? mem_cgroup_can_attach+0x260/0x260 [ 221.922152] ? selinux_sb_eat_lsm_opts+0x2f0/0x2f0 [ 221.922153] ? obj_cgroup_charge+0x16b/0x220 [ 221.922154] ? kmem_cache_alloc+0x78/0x4c0 [ 221.922155] obj_cgroup_charge+0x122/0x220 [ 221.922156] ? vm_area_alloc+0x20/0x90 [ 221.922156] kmem_cache_alloc+0x78/0x4c0 [ 221.922157] vm_area_alloc+0x20/0x90 [ 221.922158] mmap_region+0x3ed/0x9a0 [ 221.922159] ? cap_mmap_addr+0x1d/0x80 [ 221.922160] do_mmap+0x3ee/0x720 [ 221.922161] vm_mmap_pgoff+0x16a/0x1c0 [ 221.922162] ? randomize_stack_top+0x90/0x90 [ 221.922163] ? copy_page_range+0x1980/0x1980 [ 221.922163] ksys_mmap_pgoff+0xab/0x350 [ 221.922164] ? find_mergeable_anon_vma+0x110/0x110 [ 221.922165] ? __audit_syscall_entry+0x1a6/0x1e0 [ 221.922166] __x64_sys_mmap+0x8d/0xb0 [ 221.922167] do_syscall_64+0x38/0x50 [ 221.922168] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 221.922169] RIP: 0033:0x7fe8f5e75103 [ 221.922172] Code: 54 41 89 d4 55 48 89 fd 53 4c 89 cb 48 85 ff 74 56 49 89 d9 45 89 f8 45 89 f2 44 89 e2 4c 89 ee 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7d 5b 5d 41 5c 41 5d 41 5e 41 5f c3 66 2e 0f [ 221.922173] RSP: 002b:00007ffd38c90198 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 221.922175] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe8f5e75103 [ 221.922176] RDX: 0000000000000003 RSI: 0000000000001000 RDI: 0000000000000000 [ 221.922178] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 221.922179] R10: 0000000000002022 R11: 0000000000000246 R12: 0000000000000003 [ 221.922180] R13: 0000000000001000 R14: 0000000000002022 R15: 0000000000000000 [ 221.922181] [ 213O[ 221.922182] The buggy address belongs to the variable: [ 221.922183] clear_seq+0x2d/0x40 [ 221.922183] [ 221.922184] Memory state around the buggy address: [ 221.922185] ffffffffba51da80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 221.922187] ffffffffba51db00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 221.922188] >ffffffffba51db80: f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9 00 f9 f9 f9 [ 221.922189] ^ [ 221.922190] ffffffffba51dc00: f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9 00 f9 f9 f9 [ 221.922191] ffffffffba51dc80: f9 f9 f9 f9 01 f9 f9 f9 f9 f9 f9 f9 00 f9 f9 f9 [ 221.922193] ================================================================== [ 221.922194] Disabling lock debugging due to kernel taint [ 221.922196] ,task=memcg_test_1,pid=11280,uid=0 [ 221.922205] Memory cgroup out of memory: Killed process 11280 (memcg_test_1) total-vm:4124kB, anon-rss:72kB, file-rss:0kB, shmem-rss:0kB, UID:0 pgtables:48kB oom_score_adj:0 [ 221.922509] memcg_test_1 invoked oom-killer: gfp_mask=0xcc0(GFP_KERNEL), order=0, oom_score_adj=0 [ 222.885676] CPU: 2 PID: 11283 Comm: memcg_test_1 Tainted: G B 5.9.0-next-20201013 #1 [ 222.885678] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.0b 07/27/2017 [ 222.885679] Call Trace: [ 222.885683] dump_stack+0xa4/0xd9 [ 222.885686] dump_header+0x8f/0x3bf [ 222.885689] oom_kill_process.cold+0xb/0x10 [ 222.885692] out_of_memory+0x1e9/0x860 [ 222.885697] ? oom_killer_disable+0x210/0x210 [ 222.923728] mem_cgroup_out_of_memory+0x198/0x1c0 [ 222.923731] ? mem_cgroup_count_precharge_pte_range+0x250/0x250 Reported-by: Naresh Kamboju full test details and log link, https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20201013/testrun/3302398/suite/linux-log-parser/tests/ -- Linaro LKFT https://lkft.linaro.org