From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) (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 77F7B1DA23 for ; Sun, 17 Nov 2024 08:54:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.197 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731833662; cv=none; b=Miv8lUF+y+lMaRj5SmUZDSXlaIUVcp/YHrUTT/+uitQwIxNWOi3A8BHE5s0IEEkRLFv4YQ3bT2j/VQwzttGwC9dhyeWGF3tlKb/lsXV8cSxd2T+XuAyuYEs5zvCIG5Y41hAEX8bfiGrcGHUpShDK+gsWFaUMmePRXHXzFTDfVCk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731833662; c=relaxed/simple; bh=eW7ZTuGgTxVbD9YJouOvUERPiC9b5acU+NvaGEjE3D0=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=iPU6CwnwQQTH0VjKXFXVN/aIRNu0+my5yR9QbeCRmeDqFtpXl/YpEGtA7gRw6Ege3A+2BTtYIXL8lXdijlSLIsoBMnfGmjh0TS125WmEAvMcPLHsIxqi3vtymVCt3bNXLmrZEE6jPHUhq7dVGUAm7luF8WLTLor/P/I5qHel3Ns= 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=209.85.166.197 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-f197.google.com with SMTP id e9e14a558f8ab-3a5b2ec15a9so10352605ab.3 for ; Sun, 17 Nov 2024 00:54:20 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1731833659; x=1732438459; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=DEtI0Z1ytAIIQ+OsrJeQ49AClVM0w20ckGZyyuMEl9Y=; b=gAr/bbACCmDfIvYdu0EM6gC1vPzbx9oQEE5VeKQnr6ODOdYvbXhAQquNvWfTKtBJbr TwUAJTaAsriJ4ES9RSblHXD2FXnxeIng5SWtKOPBEJu4QHrCE/pkvgYU2bOfNX5tYZsN PEBim5DLxm5lpOYCSKmxhSB9+bygxwv6SSXvGLjGxtWWODLG0lwV8/62CO5FA0B/9Vqe 5tHEqB4cFrvnONNIQZKXgPY+zhf8mtDkILjTD2Jfd8/wH7RVZKVyJX1BCYTEI16BovYR erzfCfIw1a44aUSI3w6VOE34Qci3GnTcWnMZXgLT9fJswQffzw8DtAVc9TXSL2BS7RmS cjug== X-Forwarded-Encrypted: i=1; AJvYcCU/vxMuZXGO06qUA7MBy0VMhgwsJuMwk8mffiKqe/7lW5kkNfQ8ArIcDf80K1Zb5WbTfCKG70pP7PocrYU=@vger.kernel.org X-Gm-Message-State: AOJu0YyeIBqt3hn3r5suefODtaF/OCtWGkHl9bVefN3qvZ+LQtjTvSt7 owyOb7e9F9bUiPT6TWTzZHdN7xOybq0UywnM5O807uImC7XoY0t4Z4FqrGHS5YNKYv/+HdC5LIn 7nSvQ6+1VCffFNKEeMfN+3+QsWaJQea0F6X69QqrtHc8uEulHWGVZmcs= X-Google-Smtp-Source: AGHT+IEBT33y/mdzg5BZxsKfEL8O2ghZhGIuAs4E2z4BmLZQieXaepLs18dEW08L7HQy+bBE3Bdt+g65W1LrU2jKoCb3W9cAHtJS Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:219e:b0:3a3:b45b:fb92 with SMTP id e9e14a558f8ab-3a7480d5657mr69307185ab.23.1731833659626; Sun, 17 Nov 2024 00:54:19 -0800 (PST) Date: Sun, 17 Nov 2024 00:54:19 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6739af3b.050a0220.87769.0007.GAE@google.com> Subject: [syzbot] [bcachefs?] KMSAN: uninit-value in bch2_alloc_v4_validate (2) From: syzbot To: 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: 3022e9d00ebe Merge tag 'sched_ext-for-6.12-rc7-fixes' of g.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=175f0df7980000 kernel config: https://syzkaller.appspot.com/x/.config?x=dcca673786a14715 dashboard link: https://syzkaller.appspot.com/bug?extid=8dd95f470e7cd0ff4b66 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/937339c4ba17/disk-3022e9d0.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/23acd73c301b/vmlinux-3022e9d0.xz kernel image: https://storage.googleapis.com/syzbot-assets/66d14471611f/bzImage-3022e9d0.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+8dd95f470e7cd0ff4b66@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in bch2_alloc_v4_validate+0x739/0x19a0 fs/bcachefs/alloc_background.c:249 bch2_alloc_v4_validate+0x739/0x19a0 fs/bcachefs/alloc_background.c:249 bch2_bkey_val_validate+0x2b5/0x440 fs/bcachefs/bkey_methods.c:143 bset_key_validate fs/bcachefs/btree_io.c:845 [inline] validate_bset_keys+0x1531/0x2080 fs/bcachefs/btree_io.c:914 validate_bset_for_write+0x142/0x290 fs/bcachefs/btree_io.c:1946 __bch2_btree_node_write+0x53df/0x6830 fs/bcachefs/btree_io.c:2156 bch2_btree_node_write+0x256/0x2e0 fs/bcachefs/btree_io.c:2300 btree_node_write_if_need fs/bcachefs/btree_io.h:151 [inline] __btree_node_flush+0x606/0x680 fs/bcachefs/btree_trans_commit.c:252 bch2_btree_node_flush1+0x38/0x60 fs/bcachefs/btree_trans_commit.c:266 journal_flush_pins+0xce6/0x1780 fs/bcachefs/journal_reclaim.c:565 __bch2_journal_reclaim+0xda8/0x1670 fs/bcachefs/journal_reclaim.c:698 bch2_journal_reclaim_thread+0x18e/0x760 fs/bcachefs/journal_reclaim.c:740 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: bch2_alloc_v4_validate+0x27f/0x19a0 fs/bcachefs/alloc_background.c:247 bch2_bkey_val_validate+0x2b5/0x440 fs/bcachefs/bkey_methods.c:143 bset_key_validate fs/bcachefs/btree_io.c:845 [inline] validate_bset_keys+0x1531/0x2080 fs/bcachefs/btree_io.c:914 validate_bset_for_write+0x142/0x290 fs/bcachefs/btree_io.c:1946 __bch2_btree_node_write+0x53df/0x6830 fs/bcachefs/btree_io.c:2156 bch2_btree_node_write+0x256/0x2e0 fs/bcachefs/btree_io.c:2300 btree_node_write_if_need fs/bcachefs/btree_io.h:151 [inline] __btree_node_flush+0x606/0x680 fs/bcachefs/btree_trans_commit.c:252 bch2_btree_node_flush1+0x38/0x60 fs/bcachefs/btree_trans_commit.c:266 journal_flush_pins+0xce6/0x1780 fs/bcachefs/journal_reclaim.c:565 __bch2_journal_reclaim+0xda8/0x1670 fs/bcachefs/journal_reclaim.c:698 bch2_journal_reclaim_thread+0x18e/0x760 fs/bcachefs/journal_reclaim.c:740 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:393 [inline] bkey_p_copy fs/bcachefs/bkey.h:47 [inline] bch2_sort_keys_keep_unwritten_whiteouts+0x16af/0x19d0 fs/bcachefs/bkey_sort.c:187 __bch2_btree_node_write+0x3ae8/0x6830 fs/bcachefs/btree_io.c:2099 bch2_btree_node_write+0x256/0x2e0 fs/bcachefs/btree_io.c:2300 btree_node_write_if_need fs/bcachefs/btree_io.h:151 [inline] __btree_node_flush+0x606/0x680 fs/bcachefs/btree_trans_commit.c:252 bch2_btree_node_flush1+0x38/0x60 fs/bcachefs/btree_trans_commit.c:266 journal_flush_pins+0xce6/0x1780 fs/bcachefs/journal_reclaim.c:565 __bch2_journal_reclaim+0xda8/0x1670 fs/bcachefs/journal_reclaim.c:698 bch2_journal_reclaim_thread+0x18e/0x760 fs/bcachefs/journal_reclaim.c:740 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+0x22c/0x370 mm/slub.c:4219 __kmalloc_large_node_noprof+0x3f/0x1e0 mm/slub.c:4236 __do_kmalloc_node mm/slub.c:4252 [inline] __kmalloc_node_noprof+0x9d6/0xf50 mm/slub.c:4270 __kvmalloc_node_noprof+0xc0/0x2d0 mm/util.c:658 btree_bounce_alloc fs/bcachefs/btree_io.c:124 [inline] btree_node_sort+0x78a/0x1d30 fs/bcachefs/btree_io.c:323 bch2_btree_post_write_cleanup+0x1b0/0xf20 fs/bcachefs/btree_io.c:2252 bch2_btree_node_prep_for_write+0x494/0x720 fs/bcachefs/btree_trans_commit.c:93 bch2_trans_lock_write+0x7ef/0xc00 fs/bcachefs/btree_trans_commit.c:129 do_bch2_trans_commit fs/bcachefs/btree_trans_commit.c:896 [inline] __bch2_trans_commit+0x31c4/0xd190 fs/bcachefs/btree_trans_commit.c:1121 bch2_trans_commit fs/bcachefs/btree_update.h:184 [inline] bch2_journal_replay+0x2e3d/0x4d30 fs/bcachefs/recovery.c:317 bch2_run_recovery_pass fs/bcachefs/recovery_passes.c:185 [inline] bch2_run_recovery_passes+0xaf9/0xf80 fs/bcachefs/recovery_passes.c:238 bch2_fs_recovery+0x447b/0x5b00 fs/bcachefs/recovery.c:861 bch2_fs_start+0x7b2/0xbd0 fs/bcachefs/super.c:1036 bch2_fs_get_tree+0x13ea/0x22d0 fs/bcachefs/fs.c:2170 vfs_get_tree+0xb1/0x5a0 fs/super.c:1814 do_new_mount+0x71f/0x15e0 fs/namespace.c:3507 path_mount+0x742/0x1f10 fs/namespace.c:3834 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount+0x722/0x810 fs/namespace.c:4034 __ia32_sys_mount+0xe3/0x150 fs/namespace.c:4034 ia32_sys_call+0x2530/0x40d0 arch/x86/include/generated/asm/syscalls_32.h:22 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb0/0x110 arch/x86/entry/common.c:386 do_fast_syscall_32+0x38/0x80 arch/x86/entry/common.c:411 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:449 entry_SYSENTER_compat_after_hwframe+0x84/0x8e CPU: 0 UID: 0 PID: 12680 Comm: bch-reclaim/loo Not tainted 6.12.0-rc7-syzkaller-00012-g3022e9d00ebe #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 ===================================================== --- 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