From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f206.google.com (mail-il1-f206.google.com [209.85.166.206]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E6669605C6 for ; Sat, 25 May 2024 14:55:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.206 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716648927; cv=none; b=WVnTHmcpnCMeN3MyDE0O6VICvPS9yOc9QrN4IX51pqNuPL6ImdKu2F13otFAgsuDRbBOQo2/W7NxoOIlu7OMZE9xTzOZKRDVizmNK2iUux1y04+truoXAqJfr+jIKQK0yENHkADiszrw87B7RHiByqDUAq/RIxfQIWQmPoqd4t4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716648927; c=relaxed/simple; bh=Fz0aw1EiF6ZOsk6k1keRmejxcoSipTICrN0oQ3OoEV8=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=KPhNM4xaGrdJwEIimyljiWKF55KNLAsCjYwazHHDlZ5pCdq+2qDXsxEwn+qJdicfuQ2s8Gr0u2ichS7pusuCR94yF6AqH2ADsT5B/EqT0RjUD7TYV6HE0x1kmPW8pAdgevY2mxDiPQcPV4EtOTHTVRp9OiJ12Lv0Td6tihk2fFg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.206 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f206.google.com with SMTP id e9e14a558f8ab-36db3bbf931so43182005ab.0 for ; Sat, 25 May 2024 07:55:25 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716648925; x=1717253725; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=7P0rG7yKNGHrRRe/5Vz8+uxInZHOLcNoxttbH0GENig=; b=bACZ8GPX7oRxsBMq2shCAamNufC6jD+bztf+aegYsntyHxFZcea26HHFWGx3w+sQVR QZaCAQbbhmLcSJby4++mGHjq1dOPV1RDUxsJ2WsJi2/xkddLJvajqqEeuDzDU1u0rvB6 OPpN2jrjibRcgyTLamVzFmaS2gKfpt64eupfdijisMWJaU+G2Tx1oynU5ffBL0djPElW Rf2CVNV4dxz0zia/4CxTg7+/iFArFOozFKIsodhanR4WaiOkmIV2+G9v/VuCDv6ATWL0 6Zv0LaxvDLk03w+dsabE+i/ULcn6wNCuR9SN/6OkTxD9Qipji9jxsDfsl+ndONvXyd50 wjYQ== X-Forwarded-Encrypted: i=1; AJvYcCUuPEvUCfoep8AvSN+I7RhNYbIXN4YGU5l/nZgOsTXAcOtFMqjFp5ggeQC9mmoma+iam09Fm98xB83zWYuki+FN+hYXoBfHSbeonUvR X-Gm-Message-State: AOJu0Yze2QM87Ui1YsagXOaNQ6pmheXUTnBpuhDfG4U6LEW09Omw4Qzi mxNrKTrzbKYh5xk1FyAZsS6nmX3ZtOcvrwbSsYpFodbKGWhxvhIW9QBYAaYnIk8kXKEVfrWk+0T mCQUO3igX5Jkc99vi4Ckcup/QpAHohCO/+GLX6rWUOmDy2nI6PvoJNzA= X-Google-Smtp-Source: AGHT+IEYU52nZW35CbtGY+KBokbn0lYgK9/tzTsldeM5A23wuJhtCjFzvgGlzX3U7WfWHdv/tFfVWr4XKMPbKihB/Jmuox9BnMLI Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1d8a:b0:36c:2976:3012 with SMTP id e9e14a558f8ab-3737b2b947dmr3482855ab.2.1716648925146; Sat, 25 May 2024 07:55:25 -0700 (PDT) Date: Sat, 25 May 2024 07:55:25 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000633dce06194879ad@google.com> Subject: [syzbot] [bcachefs?] KMSAN: uninit-value in bch2_alloc_v4_invalid From: syzbot To: bfoster@redhat.com, kent.overstreet@linux.dev, linux-bcachefs@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 614da38e2f7a Merge tag 'hid-for-linus-2024051401' of git:/.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1259beb2980000 kernel config: https://syzkaller.appspot.com/x/.config?x=f5d2cbf33633f507 dashboard link: https://syzkaller.appspot.com/bug?extid=3b2968fa4953885dd66a compiler: Debian clang version 15.0.6, 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/89eafb874b71/disk-614da38e.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/356000512ad9/vmlinux-614da38e.xz kernel image: https://storage.googleapis.com/syzbot-assets/839c73939115/bzImage-614da38e.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+3b2968fa4953885dd66a@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in bch2_alloc_v4_invalid+0x625/0x10f0 fs/bcachefs/alloc_background.c:247 bch2_alloc_v4_invalid+0x625/0x10f0 fs/bcachefs/alloc_background.c:247 bch2_bkey_val_invalid+0x24f/0x380 fs/bcachefs/bkey_methods.c:140 bset_key_invalid fs/bcachefs/btree_io.c:831 [inline] validate_bset_keys+0x12d8/0x25d0 fs/bcachefs/btree_io.c:904 validate_bset_for_write+0x1dd/0x340 fs/bcachefs/btree_io.c:1945 __bch2_btree_node_write+0x4777/0x67c0 fs/bcachefs/btree_io.c:2138 bch2_btree_node_write+0xa5/0x2e0 fs/bcachefs/btree_io.c:2288 btree_node_write_if_need fs/bcachefs/btree_io.h:153 [inline] __btree_node_flush+0x4d0/0x640 fs/bcachefs/btree_trans_commit.c:229 bch2_btree_node_flush0+0x35/0x60 fs/bcachefs/btree_trans_commit.c:238 journal_flush_pins+0xce6/0x1780 fs/bcachefs/journal_reclaim.c:553 __bch2_journal_reclaim+0xd88/0x1610 fs/bcachefs/journal_reclaim.c:685 bch2_journal_reclaim_thread+0x18e/0x760 fs/bcachefs/journal_reclaim.c:727 kthread+0x3e2/0x540 kernel/kthread.c:389 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Uninit was stored to memory at: memcpy_u64s_small fs/bcachefs/util.h:511 [inline] bkey_p_copy fs/bcachefs/bkey.h:46 [inline] bch2_sort_keys+0x1f34/0x2cb0 fs/bcachefs/bkey_sort.c:194 __bch2_btree_node_write+0x3acd/0x67c0 fs/bcachefs/btree_io.c:2100 bch2_btree_node_write+0xa5/0x2e0 fs/bcachefs/btree_io.c:2288 btree_node_write_if_need fs/bcachefs/btree_io.h:153 [inline] __btree_node_flush+0x4d0/0x640 fs/bcachefs/btree_trans_commit.c:229 bch2_btree_node_flush0+0x35/0x60 fs/bcachefs/btree_trans_commit.c:238 journal_flush_pins+0xce6/0x1780 fs/bcachefs/journal_reclaim.c:553 __bch2_journal_reclaim+0xd88/0x1610 fs/bcachefs/journal_reclaim.c:685 bch2_journal_reclaim_thread+0x18e/0x760 fs/bcachefs/journal_reclaim.c:727 kthread+0x3e2/0x540 kernel/kthread.c:389 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Uninit was created at: __kmalloc_large_node+0x231/0x370 mm/slub.c:3994 __do_kmalloc_node mm/slub.c:4027 [inline] __kmalloc_node+0xb10/0x10c0 mm/slub.c:4046 kmalloc_node include/linux/slab.h:648 [inline] kvmalloc_node+0xc0/0x2d0 mm/util.c:634 kvmalloc include/linux/slab.h:766 [inline] btree_bounce_alloc fs/bcachefs/btree_io.c:118 [inline] bch2_btree_node_read_done+0x4e68/0x75e0 fs/bcachefs/btree_io.c:1185 btree_node_read_work+0x8a5/0x1eb0 fs/bcachefs/btree_io.c:1324 bch2_btree_node_read+0x3d42/0x4b50 __bch2_btree_root_read fs/bcachefs/btree_io.c:1748 [inline] bch2_btree_root_read+0xa6c/0x13d0 fs/bcachefs/btree_io.c:1772 read_btree_roots+0x454/0xee0 fs/bcachefs/recovery.c:457 bch2_fs_recovery+0x7b6a/0x93e0 fs/bcachefs/recovery.c:785 bch2_fs_start+0x7b2/0xbd0 fs/bcachefs/super.c:1043 bch2_fs_open+0x152a/0x15f0 fs/bcachefs/super.c:2105 bch2_mount+0x90d/0x1d90 fs/bcachefs/fs.c:1906 legacy_get_tree+0x114/0x290 fs/fs_context.c:662 vfs_get_tree+0xa7/0x570 fs/super.c:1779 do_new_mount+0x71f/0x15e0 fs/namespace.c:3352 path_mount+0x742/0x1f20 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount+0x725/0x810 fs/namespace.c:3875 __x64_sys_mount+0xe4/0x150 fs/namespace.c:3875 x64_sys_call+0x2bf4/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:166 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 0 PID: 8109 Comm: bch-reclaim/loo Not tainted 6.9.0-syzkaller-02707-g614da38e2f7a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 ===================================================== --- 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