From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ua1-f77.google.com (mail-ua1-f77.google.com [209.85.222.77]) (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 CA42F1684AC for ; Fri, 13 Dec 2024 19:20:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.222.77 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734117632; cv=none; b=ehrxeLRuR+kBovUqsUU9N+aEGoZDXyCz6msKJhDxwEZvMzNfOFnEcWXthN2ZqBR95qXBw0UVRNt5DEIRWMqfgWn7bo8T5ywQ7AxQA6xAe8C35eQgtk7poymvIlCd/pcKPiJh6kGxfU2ePLmMChYjN8O31hxOkeRCK4GzpnVzPpU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734117632; c=relaxed/simple; bh=4SGi0enRJVcai15qH3LwCosFtYap/LUehjcwvR2f/NQ=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=OFOpZ0GnIOyHrWUui8b4CjDxgs89irnLif/Ja5TVQaVKeYcRFgyayWKRCf4fsuNNEhYIHFCCWwjH1lG+VGHaVTBFCNGBCIlcs0EMdFzRm+fzCvddruyRk5wuyHXdgstlI/MsscARPB5XdRiw9qdnQZiQwzDneBcCXwgyl1BhBPc= 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=209.85.222.77 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-ua1-f77.google.com with SMTP id a1e0cc1a2514c-85c4a38c3b3so1365738241.3 for ; Fri, 13 Dec 2024 11:20:30 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1734117629; x=1734722429; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=SBh0cDcxYAsSADOuDl2Ad3HHmdzKD2QJGvTJjL9pGiA=; b=VOB1NKtlcz2tpvbs/RCPm7FSwHyGTTpznnQV8u1l6aNuooC1K380rzoaDWETuVHWx5 gXDtUBqux+5LbtFt4ZclJ4mB7SA7AzI9qa63Y226/3beLF+bMkPdadX314coSGmS7sI6 r/7ylNjVPM8dlL0bbW6Y+LyIqZBLL+0HThUxnHQI1angW46QvqTyMDeMSiDLABiskcB6 muYYWSZ8e4xetUXWXEj/OLTR4dZCAr940P1ffkrOEZYKKhnE4GVVgulQNFCi6nty4sVZ m8lCx39COdBLZOUeREiIT+i9lDOQ2F1Md5o9ZbB5yXmxFOCCSl9FYMcD368hQyXCDskQ V8EQ== X-Forwarded-Encrypted: i=1; AJvYcCUBVP8uyu87B/CYJD6pKGAjhKYr/6kkTTtyBc3COqGT8ZdgV7zXb8LQqjA4eqyS+2I+PrDLBiqYHdvEcuM=@vger.kernel.org X-Gm-Message-State: AOJu0YxH+p2nk63zI/wSfsoNk7LOfParUAQj+lgGLH1T/1QIK6pb13SR PzsMnC0YZ2pLJCfCzYTZjmiKGeI8Qk6XwMf+YZPe4V/BlvqP1h766b5YjcbTbJ3eSj+IQI8QzA/ X/+eEoFaF9xzowXgud7raixbAz+nOyTqcZgSkzXkY1+GckCspPNS1uOY= X-Google-Smtp-Source: AGHT+IFVV968yAdGGHzAHY/GBff1XxkHL2BzAPSYHr5jONe7t1eGHi3dYhTYPa0Q22assxwcPfBcyKAYqNkRzXxOwnIQyUk5cPP2 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:180d:b0:3a7:7ee3:108d with SMTP id e9e14a558f8ab-3aff9821369mr56239645ab.23.1734117209296; Fri, 13 Dec 2024 11:13:29 -0800 (PST) Date: Fri, 13 Dec 2024 11:13:29 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <675c8759.050a0220.2875e5.004a.GAE@google.com> Subject: [syzbot] [bcachefs?] KMSAN: uninit-value in __build_ro_aux_tree 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: fac04efc5c79 Linux 6.13-rc2 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15eeab30580000 kernel config: https://syzkaller.appspot.com/x/.config?x=95d0bb0535bcaca0 dashboard link: https://syzkaller.appspot.com/bug?extid=ac254bd3bcde20072a0a 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/9d6e1c34e8de/disk-fac04efc.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/3e1de71b47f9/vmlinux-fac04efc.xz kernel image: https://storage.googleapis.com/syzbot-assets/915cb3b3a8e7/bzImage-fac04efc.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ac254bd3bcde20072a0a@syzkaller.appspotmail.com bcachefs (loop3): journal_replay... ===================================================== BUG: KMSAN: uninit-value in __build_ro_aux_tree+0x61f/0x21a0 fs/bcachefs/bset.c:715 __build_ro_aux_tree+0x61f/0x21a0 fs/bcachefs/bset.c:715 bch2_bset_build_aux_tree+0x6e6/0x850 fs/bcachefs/bset.c:779 bch2_btree_build_aux_trees fs/bcachefs/btree_io.c:448 [inline] bch2_btree_init_next+0xdda/0x11e0 fs/bcachefs/btree_io.c:508 bch2_btree_node_prep_for_write+0x6c8/0x720 fs/bcachefs/btree_trans_commit.c:101 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] btree_key_cache_flush_pos fs/bcachefs/btree_key_cache.c:432 [inline] bch2_btree_key_cache_journal_flush+0x1076/0x1900 fs/bcachefs/btree_key_cache.c:512 journal_flush_pins+0xce6/0x1780 fs/bcachefs/journal_reclaim.c:565 journal_flush_done+0xe1/0x3f0 fs/bcachefs/journal_reclaim.c:819 bch2_journal_flush_pins+0xdb/0x3b0 fs/bcachefs/journal_reclaim.c:852 bch2_journal_flush_all_pins fs/bcachefs/journal_reclaim.h:76 [inline] bch2_journal_replay+0x4937/0x4d30 fs/bcachefs/recovery.c:383 bch2_run_recovery_pass fs/bcachefs/recovery_passes.c:191 [inline] bch2_run_recovery_passes+0xaf9/0xf80 fs/bcachefs/recovery_passes.c:244 bch2_fs_recovery+0x447b/0x5b00 fs/bcachefs/recovery.c:861 bch2_fs_start+0x7b2/0xbd0 fs/bcachefs/super.c:1037 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+0x260e/0x4180 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 Uninit was created at: ___kmalloc_large_node+0x22c/0x370 mm/slub.c:4238 __kmalloc_large_node_noprof+0x3f/0x1e0 mm/slub.c:4255 __do_kmalloc_node mm/slub.c:4271 [inline] __kmalloc_node_noprof+0xc96/0x1250 mm/slub.c:4289 __kvmalloc_node_noprof+0xc0/0x2d0 mm/util.c:650 btree_node_data_alloc fs/bcachefs/btree_cache.c:153 [inline] __bch2_btree_node_mem_alloc+0x2be/0xa80 fs/bcachefs/btree_cache.c:198 bch2_fs_btree_cache_init+0x4e4/0xb50 fs/bcachefs/btree_cache.c:653 bch2_fs_alloc fs/bcachefs/super.c:917 [inline] bch2_fs_open+0x4d3a/0x5b40 fs/bcachefs/super.c:2065 bch2_fs_get_tree+0x983/0x22d0 fs/bcachefs/fs.c:2157 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+0x260e/0x4180 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: 1 UID: 0 PID: 6069 Comm: syz.3.35 Not tainted 6.13.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ===================================================== --- 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