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 X-Spam-Level: X-Spam-Status: No, score=-4.0 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F2632C433E6 for ; Mon, 20 Jul 2020 16:48:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D5F7720773 for ; Mon, 20 Jul 2020 16:48:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389160AbgGTQsa (ORCPT ); Mon, 20 Jul 2020 12:48:30 -0400 Received: from mail-il1-f197.google.com ([209.85.166.197]:51462 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728122AbgGTQsW (ORCPT ); Mon, 20 Jul 2020 12:48:22 -0400 Received: by mail-il1-f197.google.com with SMTP id s137so11365753ilc.18 for ; Mon, 20 Jul 2020 09:48:21 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=52vgdGaAA8hcUPFlyYtitvwg340NDLC7/fQIeVBuX18=; b=NNZHlX1XU2fpHGAQw9Pky7oAmF5eZm6NQawUPrrx6MWFDwyBCltFZkdaP+3h0wtD1M kUYbS17wvpIZu/4uA3bzElSlrLvy+sIBCCfEIQdEN2HJqJzs6XcHAYUsRtGCQpWuE5zk ckEiox0uKbvERg9NzfuZhHdkHWG1YhrEFYhjrksDeiy+SENEUtqWdV+aglzzm8m/F5eA 5bpnPAJ4B0/opCBDQdDx1kdNc11Ckrze8CNdiORBTYU02C9elLCeabnE+wS7bfHVKQI2 KfwEHbJOF1lKzR0x7GohjzZuUqGLDRLwsPR/Q4far1RI0yu3RuS0LhgbixuEFRkL4SsY u/JA== X-Gm-Message-State: AOAM533npieTSz0B2ys4dnJ79F7/HuQIBj99gS+JXEnEYw9mlQ6zQJaJ q56V0iKptFJrYWj7hARbCXDZeMi0ZOb6PKK72c219SPvZ7LH X-Google-Smtp-Source: ABdhPJy58JS4cE77WSSYRgFG6obmjU2yddsYxThq4PWwqhYKRsFd+VPkQu8IsDYbqRgP6hlD9BEImNQdCHOEYPl2L/ThChPnaouR MIME-Version: 1.0 X-Received: by 2002:a05:6e02:961:: with SMTP id q1mr22201056ilt.94.1595263701276; Mon, 20 Jul 2020 09:48:21 -0700 (PDT) Date: Mon, 20 Jul 2020 09:48:21 -0700 In-Reply-To: <000000000000588c2c05aa156b2b@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000003cdc6c05aae24652@google.com> Subject: Re: kernel BUG at mm/vmalloc.c:LINE! (2) From: syzbot To: akpm@linux-foundation.org, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, luto@kernel.org, mingo@redhat.com, peterz@infradead.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, x86@kernel.org Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has found a reproducer for the following issue on: HEAD commit: ab8be66e Add linux-next specific files for 20200720 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=161a0cc8900000 kernel config: https://syzkaller.appspot.com/x/.config?x=c4bf77d63d0cf88c dashboard link: https://syzkaller.appspot.com/bug?extid=5f326d255ca648131f87 compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=151192bb100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12d7a873100000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+5f326d255ca648131f87@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at mm/vmalloc.c:3089! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.8.0-rc6-next-20200720-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events pcpu_balance_workfn RIP: 0010:free_vm_area mm/vmalloc.c:3089 [inline] RIP: 0010:free_vm_area mm/vmalloc.c:3085 [inline] RIP: 0010:pcpu_free_vm_areas+0x96/0xc0 mm/vmalloc.c:3432 Code: 75 48 48 8b 2b 48 8d 7d 08 48 89 f8 48 c1 e8 03 42 80 3c 30 00 75 2c 48 8b 7d 08 e8 c4 c8 ff ff 48 39 c5 74 a5 e8 ea c3 c9 ff <0f> 0b e8 e3 c3 c9 ff 4c 89 ff 5b 5d 41 5c 41 5d 41 5e 41 5f e9 71 RSP: 0018:ffffc90000d2fba8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff8880a801be00 RCX: 0000000000000000 RDX: ffff8880a95fa300 RSI: ffffffff81aa7c76 RDI: 0000000000000001 RBP: ffff8880a2b38180 R08: 0000000000000000 R09: ffffffff89cfecc3 R10: fffffbfff139fd98 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000001 R14: dffffc0000000000 R15: ffff8880a801be00 FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004c8e48 CR3: 00000000a4c08000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pcpu_destroy_chunk mm/percpu-vm.c:366 [inline] __pcpu_balance_workfn mm/percpu.c:1982 [inline] pcpu_balance_workfn+0x8b3/0x1310 mm/percpu.c:2069 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415 kthread+0x3b5/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Modules linked in: ---[ end trace 6a2e56ec52e1f480 ]--- RIP: 0010:free_vm_area mm/vmalloc.c:3089 [inline] RIP: 0010:free_vm_area mm/vmalloc.c:3085 [inline] RIP: 0010:pcpu_free_vm_areas+0x96/0xc0 mm/vmalloc.c:3432 Code: 75 48 48 8b 2b 48 8d 7d 08 48 89 f8 48 c1 e8 03 42 80 3c 30 00 75 2c 48 8b 7d 08 e8 c4 c8 ff ff 48 39 c5 74 a5 e8 ea c3 c9 ff <0f> 0b e8 e3 c3 c9 ff 4c 89 ff 5b 5d 41 5c 41 5d 41 5e 41 5f e9 71 RSP: 0018:ffffc90000d2fba8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff8880a801be00 RCX: 0000000000000000 RDX: ffff8880a95fa300 RSI: ffffffff81aa7c76 RDI: 0000000000000001 RBP: ffff8880a2b38180 R08: 0000000000000000 R09: ffffffff89cfecc3 R10: fffffbfff139fd98 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000001 R14: dffffc0000000000 R15: ffff8880a801be00 FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004c8e48 CR3: 00000000a4c08000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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 X-Spam-Level: X-Spam-Status: No, score=-4.0 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F05A0C433F4 for ; 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b=hOL8dB3KdKr6bcJeM35nPnqTJjiO/4VD3q2VRPy6ZnGHMBihnawojERBChqQ/rHw4P oPe1SWrlLlFgmHMSiK0ST8Y/JAFHtQCOlBFJvKNGK4dnqaHZSQOF9Jk1HQnd+kifMTPp NlRzyZ8JrJ/pWWbzwCoiH/HGFZ13WCXRsHC3Nj5sZLLzn40DiAGeKdDa3xYmf92ihf8/ OAthmEo7Xhb1XjZQJUN4J6B/F4XP+KKLUKqbFeLUBHvpICxxVVDIE9YI3CSiquMEvIcJ /tJKKIDqDlJT9a1Y02a69JleK12uYzupwmR0VmiwUP2pTxg5gowWGwAco3hQV0TitsEt ZFcg== X-Gm-Message-State: AOAM5334JMTQ475SkdJ7ae3xGjTG57a5tqJVh1LADE3y74EGB728+/Q7 Tf3MFLt0EYUjcBHS1L+8W986O6E8gK2/pSOHOJCcGoO8MsY+ X-Google-Smtp-Source: ABdhPJy58JS4cE77WSSYRgFG6obmjU2yddsYxThq4PWwqhYKRsFd+VPkQu8IsDYbqRgP6hlD9BEImNQdCHOEYPl2L/ThChPnaouR MIME-Version: 1.0 X-Received: by 2002:a05:6e02:961:: with SMTP id q1mr22201056ilt.94.1595263701276; Mon, 20 Jul 2020 09:48:21 -0700 (PDT) Date: Mon, 20 Jul 2020 09:48:21 -0700 In-Reply-To: <000000000000588c2c05aa156b2b@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000003cdc6c05aae24652@google.com> Subject: Re: kernel BUG at mm/vmalloc.c:LINE! (2) From: syzbot To: akpm@linux-foundation.org, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, luto@kernel.org, mingo@redhat.com, peterz@infradead.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, x86@kernel.org Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 4CAE12D905 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam01 X-Bogosity: Ham, tests=bogofilter, spamicity=0.282297, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: syzbot has found a reproducer for the following issue on: HEAD commit: ab8be66e Add linux-next specific files for 20200720 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=161a0cc8900000 kernel config: https://syzkaller.appspot.com/x/.config?x=c4bf77d63d0cf88c dashboard link: https://syzkaller.appspot.com/bug?extid=5f326d255ca648131f87 compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=151192bb100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12d7a873100000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+5f326d255ca648131f87@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at mm/vmalloc.c:3089! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.8.0-rc6-next-20200720-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events pcpu_balance_workfn RIP: 0010:free_vm_area mm/vmalloc.c:3089 [inline] RIP: 0010:free_vm_area mm/vmalloc.c:3085 [inline] RIP: 0010:pcpu_free_vm_areas+0x96/0xc0 mm/vmalloc.c:3432 Code: 75 48 48 8b 2b 48 8d 7d 08 48 89 f8 48 c1 e8 03 42 80 3c 30 00 75 2c 48 8b 7d 08 e8 c4 c8 ff ff 48 39 c5 74 a5 e8 ea c3 c9 ff <0f> 0b e8 e3 c3 c9 ff 4c 89 ff 5b 5d 41 5c 41 5d 41 5e 41 5f e9 71 RSP: 0018:ffffc90000d2fba8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff8880a801be00 RCX: 0000000000000000 RDX: ffff8880a95fa300 RSI: ffffffff81aa7c76 RDI: 0000000000000001 RBP: ffff8880a2b38180 R08: 0000000000000000 R09: ffffffff89cfecc3 R10: fffffbfff139fd98 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000001 R14: dffffc0000000000 R15: ffff8880a801be00 FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004c8e48 CR3: 00000000a4c08000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pcpu_destroy_chunk mm/percpu-vm.c:366 [inline] __pcpu_balance_workfn mm/percpu.c:1982 [inline] pcpu_balance_workfn+0x8b3/0x1310 mm/percpu.c:2069 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415 kthread+0x3b5/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Modules linked in: ---[ end trace 6a2e56ec52e1f480 ]--- RIP: 0010:free_vm_area mm/vmalloc.c:3089 [inline] RIP: 0010:free_vm_area mm/vmalloc.c:3085 [inline] RIP: 0010:pcpu_free_vm_areas+0x96/0xc0 mm/vmalloc.c:3432 Code: 75 48 48 8b 2b 48 8d 7d 08 48 89 f8 48 c1 e8 03 42 80 3c 30 00 75 2c 48 8b 7d 08 e8 c4 c8 ff ff 48 39 c5 74 a5 e8 ea c3 c9 ff <0f> 0b e8 e3 c3 c9 ff 4c 89 ff 5b 5d 41 5c 41 5d 41 5e 41 5f e9 71 RSP: 0018:ffffc90000d2fba8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff8880a801be00 RCX: 0000000000000000 RDX: ffff8880a95fa300 RSI: ffffffff81aa7c76 RDI: 0000000000000001 RBP: ffff8880a2b38180 R08: 0000000000000000 R09: ffffffff89cfecc3 R10: fffffbfff139fd98 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000001 R14: dffffc0000000000 R15: ffff8880a801be00 FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004c8e48 CR3: 00000000a4c08000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400