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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A9F74E77183 for ; Wed, 18 Dec 2024 07:35:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:To:From:Subject :Message-ID:Date:MIME-Version:Reply-To:Cc:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=/LAy+NfwnzgOWGMheyc78VmtgFBwdX7GBzcWe1SBdGs=; b=CBsu+fKHsWTZRBWGL2n2YgEYeq /eG6r2wpoEwruWHXRk+TtTBSbANgY6tOpYOeJRXgfWskp0E+Be36J315cJYn5hiZCBNCaoM/rq+wI vf5b2UCEytoCjf0/lCWhVYZuKiqThP4bFtTwvFIfBrHWzEUTcPW+c130hAxTN98X9UfR7XcjxtQsY 0DN2fWn/j/pJZ+FrOh+0bB0jvkGKuUEDa3peDIdUbIvjOpRwVfwmWmEaIt9/WmR1p1YFHvZ2B/tbv Qy2hih0RBS35jSfV4q55bp7nH9Lvp57liwB4KwsLiPWdICVnUZmToIEzfTvQ/3dizrcfiEXEbBXvn 4Ss9tRiQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tNoac-0000000Fpi7-078D; Wed, 18 Dec 2024 07:35:26 +0000 Received: from mail-il1-f208.google.com ([209.85.166.208]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tNoaZ-0000000Fphg-1WMV for linux-nvme@lists.infradead.org; Wed, 18 Dec 2024 07:35:24 +0000 Received: by mail-il1-f208.google.com with SMTP id e9e14a558f8ab-3a9cc5c246bso67563195ab.2 for ; Tue, 17 Dec 2024 23:35:22 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1734507322; x=1735112122; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=/LAy+NfwnzgOWGMheyc78VmtgFBwdX7GBzcWe1SBdGs=; b=VjVESARp5elIkq6m2s0sjLM1C0nHpNXGzvS1xYbtt9uPfSGIEH9c+xFaUcjICpk8Yv PbGyhM58nXqntTgUMdy7s2CkZlnYS8HTYwXmbWrhnqligdWaINKQaGfHqzPm5P4sPAHD +orc6WNwkoEtdozVpOsmpXTmT8qUbZQ2bTsJrjQ4dhJQa1VVhLzUzRwNvfEpX0dyAlzI sEukPZj6X5ZGZ9BMRvtf0jftyCUY+6WMKF8NPreL00Jijf9SOA/Utxk0tzuPbKehHokQ vEQpHzRhrgIOXQBR+ES+zijYa0UALBk3oaaI2upANN9bW79KV6df7Pn6O+YqK+QkNBqI aCjw== X-Forwarded-Encrypted: i=1; AJvYcCU38nrBMwgm9O6HK3k4OwQLRhnZgVVxWhWhYiEh/cVe5H6CK9O/2QTy+5nDqU8oOL9D29TGAbEnC8rL@lists.infradead.org X-Gm-Message-State: AOJu0YxORUS9Wmd7JRBYO3j65jag26gT8FL+bQBAiZY28XuljS+o+5Lg FT1OdQMe8jhQxTuyqXodYGynoIIK9vyuiRsg26I3NSJMaMYuXOc4zHyooFaPQD93/WgIzDkrV+j X/En8hF+gJ7qBsiK2BedoezhJNoha85Q3aHYJSvUg4h5/ZcMWHmLCXWw= X-Google-Smtp-Source: AGHT+IG5v+RRxkpz0ktVLRcpYdrgtwkbSecdcTEeS4TPHeJg+K9uMYZnSKDX18sDMuLLcfQ57MiJQpCxupY3Pv4JQ9Hjw16ir6cY MIME-Version: 1.0 X-Received: by 2002:a05:6e02:170b:b0:3a7:fe47:6228 with SMTP id e9e14a558f8ab-3bdc0cbcfc3mr20143205ab.6.1734507321850; Tue, 17 Dec 2024 23:35:21 -0800 (PST) Date: Tue, 17 Dec 2024 23:35:21 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67627b39.050a0220.29fcd0.0087.GAE@google.com> Subject: [syzbot] [nvme?] KASAN: slab-out-of-bounds Read in nvmet_root_discovery_nqn_show From: syzbot To: hch@lst.de, kch@nvidia.com, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, sagi@grimberg.me, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241217_233523_403017_7AA8F70C X-CRM114-Status: UNSURE ( 9.39 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org Hello, syzbot found the following issue on: HEAD commit: a0e3919a2df2 Merge tag 'usb-6.13-rc3' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=123cbcdf980000 kernel config: https://syzkaller.appspot.com/x/.config?x=99a5586995ec03b2 dashboard link: https://syzkaller.appspot.com/bug?extid=a84181c81389771eb46a compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/669aa1e15c11/disk-a0e3919a.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/ee966f8b50ac/vmlinux-a0e3919a.xz kernel image: https://storage.googleapis.com/syzbot-assets/e872e1d072f1/bzImage-a0e3919a.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a84181c81389771eb46a@syzkaller.appspotmail.com ================================================================== BUG: KASAN: slab-out-of-bounds in string_nocheck lib/vsprintf.c:646 [inline] BUG: KASAN: slab-out-of-bounds in string+0x398/0x3d0 lib/vsprintf.c:728 Read of size 1 at addr ffff88814371a8a5 by task syz.0.6476/29206 CPU: 0 UID: 0 PID: 29206 Comm: syz.0.6476 Tainted: G U 6.13.0-rc2-syzkaller-00333-ga0e3919a2df2 #0 Tainted: [U]=USER Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xc3/0x620 mm/kasan/report.c:489 kasan_report+0xd9/0x110 mm/kasan/report.c:602 string_nocheck lib/vsprintf.c:646 [inline] string+0x398/0x3d0 lib/vsprintf.c:728 vsnprintf+0xc67/0x1870 lib/vsprintf.c:2848 snprintf+0xc8/0x100 lib/vsprintf.c:2983 nvmet_root_discovery_nqn_show+0x69/0x90 drivers/nvme/target/configfs.c:2250 fill_read_buffer fs/configfs/file.c:68 [inline] configfs_read_iter+0x40d/0x690 fs/configfs/file.c:88 __kernel_read+0x3f1/0xb50 fs/read_write.c:523 integrity_kernel_read+0x7f/0xb0 security/integrity/iint.c:28 ima_calc_file_hash_tfm+0x2c9/0x3e0 security/integrity/ima/ima_crypto.c:480 ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline] ima_calc_file_hash+0x1ba/0x490 security/integrity/ima/ima_crypto.c:568 ima_collect_measurement+0x8a7/0xa10 security/integrity/ima/ima_api.c:293 process_measurement+0x1271/0x2370 security/integrity/ima/ima_main.c:372 ima_file_check+0xc6/0x110 security/integrity/ima/ima_main.c:572 security_file_post_open+0x8e/0x210 security/security.c:3121 do_open fs/namei.c:3830 [inline] path_openat+0x1419/0x2d60 fs/namei.c:3987 do_filp_open+0x20c/0x470 fs/namei.c:4014 do_sys_openat2+0x17a/0x1e0 fs/open.c:1402 do_sys_open fs/open.c:1417 [inline] __do_sys_openat fs/open.c:1433 [inline] __se_sys_openat fs/open.c:1428 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1428 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3dfbd85d19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f3dfcb03038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f3dfbf76080 RCX: 00007f3dfbd85d19 RDX: 0000000000189002 RSI: 0000000020000100 RDI: ffffffffffffff9c RBP: 00007f3dfbe01a20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f3dfbf76080 R15: 00007ffc48d63a98 The buggy address belongs to the object at ffff88814371a880 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 0 bytes to the right of allocated 37-byte region [ffff88814371a880, ffff88814371a8a5) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14371a flags: 0x57ff00000000000(node=1|zone=2|lastcpupid=0x7ff) page_type: f5(slab) raw: 057ff00000000000 ffff88801ac418c0 ffffea00052a0a40 dead000000000004 raw: 0000000000000000 0000000000200020 00000001f5000000 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 1, tgid 1 (swapper/0), ts 8577258261, free_ts 0 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1556 prep_new_page mm/page_alloc.c:1564 [inline] get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3474 __alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4751 alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2269 alloc_slab_page mm/slub.c:2423 [inline] allocate_slab mm/slub.c:2589 [inline] new_slab+0x2c9/0x410 mm/slub.c:2642 ___slab_alloc+0xce2/0x1650 mm/slub.c:3830 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3920 __slab_alloc_node mm/slub.c:3995 [inline] slab_alloc_node mm/slub.c:4156 [inline] __kmalloc_cache_noprof+0xf6/0x420 mm/slub.c:4324 kmalloc_noprof include/linux/slab.h:901 [inline] __kthread_create_on_node+0xcb/0x400 kernel/kthread.c:436 kthread_create_on_node+0xc8/0x110 kernel/kthread.c:513 init_rescuer+0x322/0x640 kernel/workqueue.c:5562 __alloc_workqueue+0xc27/0x1810 kernel/workqueue.c:5731 alloc_workqueue+0xd3/0x200 kernel/workqueue.c:5772 nvmet_init+0xd2/0x220 drivers/nvme/target/core.c:1760 do_one_initcall+0x128/0x630 init/main.c:1266 do_initcall_level init/main.c:1328 [inline] do_initcalls init/main.c:1344 [inline] do_basic_setup init/main.c:1363 [inline] kernel_init_freeable+0x58f/0x8b0 init/main.c:1577 page_owner free stack trace missing Memory state around the buggy address: ffff88814371a780: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ffff88814371a800: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc >ffff88814371a880: 00 00 00 00 05 fc fc fc fc fc fc fc fc fc fc fc ^ ffff88814371a900: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ffff88814371a980: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc ================================================================== --- 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. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup