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=-8.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 02366C63798 for ; Mon, 23 Nov 2020 18:44:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A80F520724 for ; Mon, 23 Nov 2020 18:44:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389168AbgKWSoI (ORCPT ); Mon, 23 Nov 2020 13:44:08 -0500 Received: from mail-il1-f198.google.com ([209.85.166.198]:42804 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729528AbgKWSoH (ORCPT ); Mon, 23 Nov 2020 13:44:07 -0500 Received: by mail-il1-f198.google.com with SMTP id t14so14778006ilg.9 for ; Mon, 23 Nov 2020 10:44:06 -0800 (PST) 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=Y7OXxGuhTNSLjHgBwnMPkQNQXPV8jo1HjwxEZT4e6RI=; b=iPKF8c99IEnE/fIWAF1bsfv8uPR6svCeI2HZGGAoPhRIIriC5CBEYLlE7ba+ZfIhQK /XqCsqY/2UW4fNg2+y36enj4DL1O7UcA9u6m3ddxRT4yyLLQq7ZG6zX328oN1BzH+Wj1 E8gAiaQvFowwxPCyyC+h+kOYmI+pdgNNFiRBy5YkIC3EDMYtvlM68iEvu63zpmEKT6G3 T6iNlicbVgrYcx8XqCkrKgc/xM4U4O034sd2vKB/39OwCRZbWnmv7CCOG3ZWcn4l4e9t 2fKjE/QAy69FmfpUIE35v3bCsof02iAkFuE0zSUnLNZFU4AvfFcuSP7V1I6W9+P+sNWU F84A== X-Gm-Message-State: AOAM531i2kDtNTq1lZjGQ54TPE09fBjTv+MY4ml5mUbdNTA0PsDbGW5B QR7R58KKEFaGZXC6JzzH7bunSDe1PH1IclLfGzdQftzD8m7h X-Google-Smtp-Source: ABdhPJzUPe49Pf5zqftMbICWiMg5hxz1uvONaaf2UKjilTNrUpSZLE2ariCLahkjtorhEnG6zXhsQKf4JOT6B800SIy1I/+95n3A MIME-Version: 1.0 X-Received: by 2002:a02:c881:: with SMTP id m1mr888289jao.86.1606157046221; Mon, 23 Nov 2020 10:44:06 -0800 (PST) Date: Mon, 23 Nov 2020 10:44:06 -0800 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000031907005b4ca944b@google.com> Subject: Re: memory leak in hub_event From: syzbot To: andreyknvl@google.com, balbi@kernel.org, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, stern@rowland.harvard.edu, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: memory leak in rxrpc_lookup_local write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory BUG: memory leak unreferenced object 0xffff888117824d00 (size 256): comm "syz-executor.6", pid 8896, jiffies 4294943994 (age 432.900s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 0a 00 00 00 00 00 ad 17 81 88 ff ff ................ backtrace: [<0000000069b066ee>] kmalloc include/linux/slab.h:552 [inline] [<0000000069b066ee>] kzalloc include/linux/slab.h:664 [inline] [<0000000069b066ee>] rxrpc_alloc_local net/rxrpc/local_object.c:79 [inline] [<0000000069b066ee>] rxrpc_lookup_local+0x1c1/0x760 net/rxrpc/local_object.c:244 [<0000000085db7132>] rxrpc_bind+0x174/0x240 net/rxrpc/af_rxrpc.c:149 [<00000000a2a77c59>] afs_open_socket+0xdb/0x200 fs/afs/rxrpc.c:64 [<0000000086f4a248>] afs_net_init+0x2b4/0x340 fs/afs/main.c:126 [<00000000fafe7caa>] ops_init+0x4e/0x190 net/core/net_namespace.c:152 [<00000000c3d26710>] setup_net+0xdb/0x2d0 net/core/net_namespace.c:342 [<000000001d81d993>] copy_net_ns+0x14b/0x320 net/core/net_namespace.c:483 [<0000000058b54b80>] create_new_namespaces+0x199/0x4e0 kernel/nsproxy.c:110 [<00000000cd2a2042>] unshare_nsproxy_namespaces+0x9b/0x120 kernel/nsproxy.c:231 [<00000000f7907f96>] ksys_unshare+0x2fe/0x5c0 kernel/fork.c:2949 [<0000000050cbc28c>] __do_sys_unshare kernel/fork.c:3017 [inline] [<0000000050cbc28c>] __se_sys_unshare kernel/fork.c:3015 [inline] [<0000000050cbc28c>] __x64_sys_unshare+0x12/0x20 kernel/fork.c:3015 [<00000000ade5a609>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<000000003424d3b0>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff8881182a6700 (size 256): comm "syz-executor.2", pid 8885, jiffies 4294943999 (age 432.850s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 0a 00 00 00 00 c0 b7 16 81 88 ff ff ................ backtrace: [<0000000069b066ee>] kmalloc include/linux/slab.h:552 [inline] [<0000000069b066ee>] kzalloc include/linux/slab.h:664 [inline] [<0000000069b066ee>] rxrpc_alloc_local net/rxrpc/local_object.c:79 [inline] [<0000000069b066ee>] rxrpc_lookup_local+0x1c1/0x760 net/rxrpc/local_object.c:244 [<0000000085db7132>] rxrpc_bind+0x174/0x240 net/rxrpc/af_rxrpc.c:149 [<00000000a2a77c59>] afs_open_socket+0xdb/0x200 fs/afs/rxrpc.c:64 [<0000000086f4a248>] afs_net_init+0x2b4/0x340 fs/afs/main.c:126 [<00000000fafe7caa>] ops_init+0x4e/0x190 net/core/net_namespace.c:152 [<00000000c3d26710>] setup_net+0xdb/0x2d0 net/core/net_namespace.c:342 [<000000001d81d993>] copy_net_ns+0x14b/0x320 net/core/net_namespace.c:483 [<0000000058b54b80>] create_new_namespaces+0x199/0x4e0 kernel/nsproxy.c:110 [<00000000cd2a2042>] unshare_nsproxy_namespaces+0x9b/0x120 kernel/nsproxy.c:231 [<00000000f7907f96>] ksys_unshare+0x2fe/0x5c0 kernel/fork.c:2949 [<0000000050cbc28c>] __do_sys_unshare kernel/fork.c:3017 [inline] [<0000000050cbc28c>] __se_sys_unshare kernel/fork.c:3015 [inline] [<0000000050cbc28c>] __x64_sys_unshare+0x12/0x20 kernel/fork.c:3015 [<00000000ade5a609>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<000000003424d3b0>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff888118395100 (size 256): comm "syz-executor.4", pid 8892, jiffies 4294944000 (age 432.840s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 0a 00 00 00 00 00 8b 17 81 88 ff ff ................ backtrace: [<0000000069b066ee>] kmalloc include/linux/slab.h:552 [inline] [<0000000069b066ee>] kzalloc include/linux/slab.h:664 [inline] [<0000000069b066ee>] rxrpc_alloc_local net/rxrpc/local_object.c:79 [inline] [<0000000069b066ee>] rxrpc_lookup_local+0x1c1/0x760 net/rxrpc/local_object.c:244 [<0000000085db7132>] rxrpc_bind+0x174/0x240 net/rxrpc/af_rxrpc.c:149 [<00000000a2a77c59>] afs_open_socket+0xdb/0x200 fs/afs/rxrpc.c:64 [<0000000086f4a248>] afs_net_init+0x2b4/0x340 fs/afs/main.c:126 [<00000000fafe7caa>] ops_init+0x4e/0x190 net/core/net_namespace.c:152 [<00000000c3d26710>] setup_net+0xdb/0x2d0 net/core/net_namespace.c:342 [<000000001d81d993>] copy_net_ns+0x14b/0x320 net/core/net_namespace.c:483 [<0000000058b54b80>] create_new_namespaces+0x199/0x4e0 kernel/nsproxy.c:110 [<00000000cd2a2042>] unshare_nsproxy_namespaces+0x9b/0x120 kernel/nsproxy.c:231 [<00000000f7907f96>] ksys_unshare+0x2fe/0x5c0 kernel/fork.c:2949 [<0000000050cbc28c>] __do_sys_unshare kernel/fork.c:3017 [inline] [<0000000050cbc28c>] __se_sys_unshare kernel/fork.c:3015 [inline] [<0000000050cbc28c>] __x64_sys_unshare+0x12/0x20 kernel/fork.c:3015 [<00000000ade5a609>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<000000003424d3b0>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff8881116e0f00 (size 256): comm "syz-executor.7", pid 8894, jiffies 4294944002 (age 432.820s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 0a 00 00 00 00 00 b9 17 81 88 ff ff ................ backtrace: [<0000000069b066ee>] kmalloc include/linux/slab.h:552 [inline] [<0000000069b066ee>] kzalloc include/linux/slab.h:664 [inline] [<0000000069b066ee>] rxrpc_alloc_local net/rxrpc/local_object.c:79 [inline] [<0000000069b066ee>] rxrpc_lookup_local+0x1c1/0x760 net/rxrpc/local_object.c:244 [<0000000085db7132>] rxrpc_bind+0x174/0x240 net/rxrpc/af_rxrpc.c:149 [<00000000a2a77c59>] afs_open_socket+0xdb/0x200 fs/afs/rxrpc.c:64 [<0000000086f4a248>] afs_net_init+0x2b4/0x340 fs/afs/main.c:126 [<00000000fafe7caa>] ops_init+0x4e/0x190 net/core/net_namespace.c:152 [<00000000c3d26710>] setup_net+0xdb/0x2d0 net/core/net_namespace.c:342 [<000000001d81d993>] copy_net_ns+0x14b/0x320 net/core/net_namespace.c:483 [<0000000058b54b80>] create_new_namespaces+0x199/0x4e0 kernel/nsproxy.c:110 [<00000000cd2a2042>] unshare_nsproxy_namespaces+0x9b/0x120 kernel/nsproxy.c:231 [<00000000f7907f96>] ksys_unshare+0x2fe/0x5c0 kernel/fork.c:2949 [<0000000050cbc28c>] __do_sys_unshare kernel/fork.c:3017 [inline] [<0000000050cbc28c>] __se_sys_unshare kernel/fork.c:3015 [inline] [<0000000050cbc28c>] __x64_sys_unshare+0x12/0x20 kernel/fork.c:3015 [<00000000ade5a609>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<000000003424d3b0>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory Tested on: commit: 4d02da97 Merge tag 'net-5.10-rc5' of git://git.kernel.org/.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git console output: https://syzkaller.appspot.com/x/log.txt?x=134bda0d500000 kernel config: https://syzkaller.appspot.com/x/.config?x=b29e92cdfa2687df dashboard link: https://syzkaller.appspot.com/bug?extid=44e64397bd81d5e84cba compiler: gcc (GCC) 10.1.0-syz 20200507 patch: https://syzkaller.appspot.com/x/patch.diff?x=10d4463e500000