From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) (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 C070A45023 for ; Sun, 17 Nov 2024 08:54:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731833662; cv=none; b=e7aYqciA/aRxngFrxaMex18c+m1bvP9SdAUWiH8HqVnx/mqwYJSvdSrHCc8C0kCWwHLHUwU9MEtoYiOKCu9Jw7rMeew5Hg1FnrN+nCtyCsMhB3HJBkyqaZr+WpM/Hu2wBrsAi8nUVjKl0W0w3vqLz1ODpllsYWxiDibyaxS4yAc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731833662; c=relaxed/simple; bh=hNGFVYc72UO2mgeYU91sQC9+fOs2EG6RcJDDBMnf61U=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=B9PsQodgnM1IFLxuMjx5+ZYL5Gu0crsbPLFr1lc8aPzUvwoNTM9W/0tPZn6zFJ9uJ8vOMrzzvHH6fkwcbMU4tXb/9TEdCTN9FYHQ8YCL2qbwDmdogJXXmkdyyfHcTgoEtN2B0EyFDSUnNc+RlZCDO0wKzXrIrqdsThaJ95XVI8A= 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=209.85.166.200 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-f200.google.com with SMTP id e9e14a558f8ab-3a743d76ed9so23894785ab.0 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=1731833660; x=1732438460; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=gpW9XoTRggzdMzhtPVMqmJUsWCL+vzGqsCdnm2YZVOw=; b=ArWd7A5zdR2NfWU++F4M8gq+dXyyDbLHV3wcLzm/sEltSxwhbmfjfZxwhC+EXLiK3e X1io7kPLF09oREbt369p86iTVQpCMm68OEDucX9J0b7RGoEOVJSqU4HSYccd7fKgR+BL 4ppiR1iVM4tjZ1n68Sw6MQ/KEKvkp9lVVRrdlGBqKqQCchGsyunnjOfmHqAQeP+ZYGWT HPiKMWR2OYsubmW55G0YmsfQXWX5BxKo4IqUkI7rpmy7vn6xVgDS4IQSDuslJ2T7vfX1 0m3NmzCpwJECCS1FnVO9MYOcIZQ1j8b1RJDd3aZcp7bgUG7yWqCJu/5GA0RNssFMBaUY av4A== X-Forwarded-Encrypted: i=1; AJvYcCWig24DqNIFhXPbgRJF4ZIlpky9ZFkDH8AT9Y4KWHbAnC5NZWRSELO98vIdpFdyjQoDIRWhPz0lrgfKTH4=@vger.kernel.org X-Gm-Message-State: AOJu0YzmL7VdxmCFTOdxx0qrafWZsGwRdY5fikSwNnz/RGr9IoF5dqKs e7zhBBdqhpw5hhjtoh36jd1gcbk1QYIeC/k+4IUA8gcHotVM7jFyNvnAb+wBH2bL9Xx08gyCTpc b7+fb4fgd1vbLmkFfrtwGOO+naR+QasDFQsYXrwP196ZrNo6YjCF19X4= X-Google-Smtp-Source: AGHT+IHu623/lRAwEWD8F2FQ5xQOyFBtiD7P9n4iWXZr6YNynbDCcNdLZ9sldIRp70gwoMaFQlnGfLswlX+qT5x2qw6cET/AWHq5 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:3f0b:b0:3a0:9c04:8047 with SMTP id e9e14a558f8ab-3a746f7ee2emr76584325ab.6.1731833659951; 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.050a0220.87769.0008.GAE@google.com> Subject: [syzbot] [bcachefs?] KMSAN: uninit-value in bch2_btree_node_iter_init (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=162341a7980000 kernel config: https://syzkaller.appspot.com/x/.config?x=dcca673786a14715 dashboard link: https://syzkaller.appspot.com/bug?extid=62f5ae3a10a9e97accd4 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+62f5ae3a10a9e97accd4@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in bkey_cmp_p_or_unp fs/bcachefs/bset.h:287 [inline] BUG: KMSAN: uninit-value in bkey_iter_cmp_p_or_unp fs/bcachefs/bset.h:400 [inline] BUG: KMSAN: uninit-value in bch2_bset_search_linear fs/bcachefs/bset.c:1189 [inline] BUG: KMSAN: uninit-value in bch2_btree_node_iter_init+0x319a/0x51a0 fs/bcachefs/bset.c:1334 bkey_cmp_p_or_unp fs/bcachefs/bset.h:287 [inline] bkey_iter_cmp_p_or_unp fs/bcachefs/bset.h:400 [inline] bch2_bset_search_linear fs/bcachefs/bset.c:1189 [inline] bch2_btree_node_iter_init+0x319a/0x51a0 fs/bcachefs/bset.c:1334 __btree_path_level_init fs/bcachefs/btree_iter.c:615 [inline] bch2_btree_path_level_init+0x821/0xc80 fs/bcachefs/btree_iter.c:635 btree_path_lock_root fs/bcachefs/btree_iter.c:769 [inline] bch2_btree_path_traverse_one+0x379d/0x47b0 fs/bcachefs/btree_iter.c:1183 bch2_btree_path_traverse fs/bcachefs/btree_iter.h:247 [inline] bch2_btree_iter_traverse+0xaf9/0x1020 fs/bcachefs/btree_iter.c:1880 bch2_btree_node_update_key_get_iter+0x15c/0x9e0 fs/bcachefs/btree_update_interior.c:2481 btree_node_write_work+0xb37/0x15a0 fs/bcachefs/btree_io.c:1874 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3310 worker_thread+0xea7/0x14f0 kernel/workqueue.c:3391 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: 43 Comm: kworker/0:1H Not tainted 6.12.0-rc7-syzkaller-00012-g3022e9d00ebe #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 Workqueue: bcachefs_btree_io btree_node_write_work ===================================================== --- 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