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=-3.7 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 82775C433B4 for ; Fri, 9 Apr 2021 15:39:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 61F3F60FE4 for ; Fri, 9 Apr 2021 15:39:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233700AbhDIPjb (ORCPT ); Fri, 9 Apr 2021 11:39:31 -0400 Received: from mail-il1-f197.google.com ([209.85.166.197]:53807 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231402AbhDIPja (ORCPT ); Fri, 9 Apr 2021 11:39:30 -0400 Received: by mail-il1-f197.google.com with SMTP id k12so3693012ilo.20 for ; Fri, 09 Apr 2021 08:39:17 -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:message-id:subject:from:to; bh=jZbg77mtmUAx73slrlTxgnb1mnony9A1Ml58bH1UALw=; b=lvJEl2ZpkiBMn9rte9qcy909+YLFwyDTIKKXnQBH/lrimsusjugG/NgQjoFV8V6SGf XSI5EUGT+hSQESstUVceansf7vi0Q7MbqywrE27Z9T0D4PnlikF9Qm35sKr/8j+lio8Z QiIc8O7UfZGj206ZW4ThdTNAVg4F5c8EPPIcN70T1j2h+1pzWQ1y3PWogB56ZNu3rdn3 cNuFvgUwmu4v2stChtnaIt1whYklqF2i5T5qD40/+BLU4ygm4vrGritiy0vzmIwfeN9x YCZFV+1aXZ5w5PPlBHil+YbXFrmCxzCIYwlFeA8H+GilhgBvK5uzrrNbPF9HVWK7jrt1 Y5Mg== X-Gm-Message-State: AOAM533bZydtI1AJo8IshF1sJjrYJBZ77p+1HiXHMAzeOiJ/EYpa7ZOa XSN4P60iTdsQuS97Jz/8zNr9j7247vC61eTPC7E7yc8JB9zL X-Google-Smtp-Source: ABdhPJywqm5sQ8uWfvrUvAFPSwnslEiHr4h+DPIlj9Ki8nKrSEPlMx/yenRdvwaJicFT4iECq25yIRgOCwGTyTSCdIqY1+4lZ3RN MIME-Version: 1.0 X-Received: by 2002:a02:b615:: with SMTP id h21mr15254285jam.93.1617982756977; Fri, 09 Apr 2021 08:39:16 -0700 (PDT) Date: Fri, 09 Apr 2021 08:39:16 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000007b81f905bf8bf7ac@google.com> Subject: [syzbot] WARNING: refcount bug in sk_psock_get From: syzbot To: akpm@linux-foundation.org, andrii@kernel.org, ast@kernel.org, borisp@nvidia.com, bp@alien8.de, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, hpa@zytor.com, jmattson@google.com, john.fastabend@gmail.com, joro@8bytes.org, kafai@fb.com, kpsingh@kernel.org, kuba@kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mark.rutland@arm.com, masahiroy@kernel.org, mingo@redhat.com, netdev@vger.kernel.org, pbonzini@redhat.com, peterz@infradead.org, rafael.j.wysocki@intel.com, rostedt@goodmis.org, seanjc@google.com, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, vkuznets@redhat.com, wanpengli@tencent.com, will@kernel.org, x86@kernel.org, yhs@fb.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 9c54130c Add linux-next specific files for 20210406 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=17d8d7aad00000 kernel config: https://syzkaller.appspot.com/x/.config?x=d125958c3995ddcd dashboard link: https://syzkaller.appspot.com/bug?extid=b54a1ce86ba4a623b7f0 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1729797ed00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1190f46ad00000 The issue was bisected to: commit 997acaf6b4b59c6a9c259740312a69ea549cc684 Author: Mark Rutland Date: Mon Jan 11 15:37:07 2021 +0000 lockdep: report broken irq restoration bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11a6cc96d00000 final oops: https://syzkaller.appspot.com/x/report.txt?x=13a6cc96d00000 console output: https://syzkaller.appspot.com/x/log.txt?x=15a6cc96d00000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b54a1ce86ba4a623b7f0@syzkaller.appspotmail.com Fixes: 997acaf6b4b5 ("lockdep: report broken irq restoration") ------------[ cut here ]------------ refcount_t: saturated; leaking memory. WARNING: CPU: 1 PID: 8414 at lib/refcount.c:19 refcount_warn_saturate+0xf4/0x1e0 lib/refcount.c:19 Modules linked in: CPU: 1 PID: 8414 Comm: syz-executor793 Not tainted 5.12.0-rc6-next-20210406-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:refcount_warn_saturate+0xf4/0x1e0 lib/refcount.c:19 Code: 1d 69 0c e6 09 31 ff 89 de e8 c8 b4 a6 fd 84 db 75 ab e8 0f ae a6 fd 48 c7 c7 e0 52 c2 89 c6 05 49 0c e6 09 01 e8 91 0f 00 05 <0f> 0b eb 8f e8 f3 ad a6 fd 0f b6 1d 33 0c e6 09 31 ff 89 de e8 93 RSP: 0018:ffffc90000eef388 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88801bbdd580 RSI: ffffffff815c2e05 RDI: fffff520001dde63 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815bcc6e R11: 0000000000000000 R12: 1ffff920001dde74 R13: 0000000090200301 R14: ffff888026e00000 R15: ffffc90000eef3c0 FS: 0000000001422300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 0000000012b3b000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __refcount_add_not_zero include/linux/refcount.h:163 [inline] __refcount_inc_not_zero include/linux/refcount.h:227 [inline] refcount_inc_not_zero include/linux/refcount.h:245 [inline] sk_psock_get+0x3b0/0x400 include/linux/skmsg.h:435 bpf_exec_tx_verdict+0x11e/0x11a0 net/tls/tls_sw.c:799 tls_sw_sendmsg+0xa41/0x1800 net/tls/tls_sw.c:1013 inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:821 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:674 sock_write_iter+0x289/0x3c0 net/socket.c:1001 call_write_iter include/linux/fs.h:2106 [inline] do_iter_readv_writev+0x46f/0x740 fs/read_write.c:740 do_iter_write+0x188/0x670 fs/read_write.c:866 vfs_writev+0x1aa/0x630 fs/read_write.c:939 do_writev+0x27f/0x300 fs/read_write.c:982 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x43efa9 Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe9279f418 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043efa9 RDX: 0000000000000001 RSI: 0000000020000100 RDI: 0000000000000003 RBP: 0000000000402f90 R08: 0000000000400488 R09: 0000000000400488 R10: 0000000000000038 R11: 0000000000000246 R12: 0000000000403020 R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches