From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f199.google.com (mail-il1-f199.google.com [209.85.166.199]) (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 A5ACCB652 for ; Tue, 26 Nov 2024 00:00:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732579229; cv=none; b=W+5SoElOW6HiEmucE9XCPisky8d3FUYyBSs6ks7NV8S177GPmh+19I3H/uvbsEBTYscxkZf3GQuoJhacxFz9Trd3/w2pmBtLaLF769H2k7lozIMKvXi6Wt/NJkfIyd/fgB0DXn6p1iZLTQrRWFlynfGBG7ZKsBC9JwjU6/lGaOw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732579229; c=relaxed/simple; bh=DrDj1QnSaXb9gP/ddPpMjwe9GWEB9Z5CV4wUQVaggsc=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=CNwC4DlyC3TZBJ5t/PU38tIznK2oBmE7R+w7gD8iSjEjDJDp0sT7VbbnN9Nx58iNY7c01fJnyM9joSXN5hwIsunmsIJ5dSuY3SEEq3w/fdDALLl/ae/kX6cRaYdXKx+1xJUCHYJ07qnYnyvEatPH3sSLKW7t+DySik8AWM5xBys= 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=209.85.166.199 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-f199.google.com with SMTP id e9e14a558f8ab-3a7807feadfso50320315ab.2 for ; Mon, 25 Nov 2024 16:00:27 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1732579226; x=1733184026; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=yUtWS5qjzF/HtNV8zGu1x5TqkoyxEFzPV4ZzyOZxIF0=; b=Jdkbji1u1hWV4nsvPt5axSN7eH1F/JT8ap01VdMeVlHYMCxeTHH9RDtT5GeD+C5SJR 6cZpLPELB2l5ujo5iHaZBOgFZ/5V3hEDs5r5+sa4/SHGt8sE/1RKGc2QjHjei/YJcCb4 SvVUX043Tq9EIx6SQojOhbHulwyIADmZQJJxpj3wuFUWBh7ZxokxWwzDGKwxAGWamWi5 6HZetESgRajCt4qVOquz2AkSFPeeyNoyu34nyZcz9edjTPQQ1HSsBPd4uQOdbeO6mK/L RISJkae6azwudP7AvvDM8E+xl+oBRU8du4rrbU8YStYW3DSJsL1EPzRV7ehKqyFv2ZmL GzAA== X-Forwarded-Encrypted: i=1; AJvYcCVY314Hta+exqqBPdqM7bb1ylT0uOja4R9Kq4GHk4nwVUaN/qn9ioep0PeYzgFqd7txGsCrHdQUUygUcgo=@vger.kernel.org X-Gm-Message-State: AOJu0Yy9J9n441vjkW1hTHd4lp9QrXT7q2Yjp/W/Y4yPe8tc11oMrtOC Z9uwOBQ8PAh0rWW6K4biCOiRtwiAfjrG03IJPEEv2+GP7CPjuihrB4RL4HbgrE/Rl7tJCzhxM2d hJXI2OnWkChOPS3mFqwXQ8Crqws4q4+wb8DseOprlQ3LWXFk4f1PKOe4= X-Google-Smtp-Source: AGHT+IHO24vWuGFU2CS94uRrLsz4ctDQI2CFfReVD+W/pef2JKJZ4T3zRuXmo737AJc1/wGbLLyZ6zlQeTAm31SHMCKrr5n2zmwE Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1a62:b0:3a7:6f1c:a084 with SMTP id e9e14a558f8ab-3a79afec520mr177867135ab.23.1732579226543; Mon, 25 Nov 2024 16:00:26 -0800 (PST) Date: Mon, 25 Nov 2024 16:00:26 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67450f9a.050a0220.21d33d.0002.GAE@google.com> Subject: [syzbot] [bcachefs?] KMSAN: uninit-value in bch2_trans_start_alloc_update 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: 06afb0f36106 Merge tag 'trace-v6.13' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=124736e8580000 kernel config: https://syzkaller.appspot.com/x/.config?x=ef9abe59471e0aee dashboard link: https://syzkaller.appspot.com/bug?extid=f02ee424846cc4e04e04 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=164736e8580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12347b78580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/25d599464308/disk-06afb0f3.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/0846a79f5c2a/vmlinux-06afb0f3.xz kernel image: https://storage.googleapis.com/syzbot-assets/a69b15a49da1/bzImage-06afb0f3.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/da403496381c/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+f02ee424846cc4e04e04@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in bch2_alloc_to_v4_mut_inlined fs/bcachefs/alloc_background.c:447 [inline] BUG: KMSAN: uninit-value in bch2_trans_start_alloc_update_noupdate fs/bcachefs/alloc_background.c:472 [inline] BUG: KMSAN: uninit-value in bch2_trans_start_alloc_update+0x674/0x14b0 fs/bcachefs/alloc_background.c:487 bch2_alloc_to_v4_mut_inlined fs/bcachefs/alloc_background.c:447 [inline] bch2_trans_start_alloc_update_noupdate fs/bcachefs/alloc_background.c:472 [inline] bch2_trans_start_alloc_update+0x674/0x14b0 fs/bcachefs/alloc_background.c:487 bch2_trigger_pointer fs/bcachefs/buckets.c:588 [inline] __trigger_extent+0x2425/0x6810 fs/bcachefs/buckets.c:740 bch2_trigger_extent+0x90e/0x11a0 fs/bcachefs/buckets.c:869 bch2_key_trigger fs/bcachefs/bkey_methods.h:87 [inline] bch2_key_trigger_old fs/bcachefs/bkey_methods.h:101 [inline] btree_update_nodes_written_trans fs/bcachefs/btree_update_interior.c:651 [inline] btree_update_nodes_written fs/bcachefs/btree_update_interior.c:723 [inline] btree_interior_update_work+0x1661/0x4870 fs/bcachefs/btree_update_interior.c:861 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 stored to memory at: memcpy_u64s_small fs/bcachefs/util.h:393 [inline] bkey_reassemble fs/bcachefs/bkey.h:513 [inline] btree_key_cache_create fs/bcachefs/btree_key_cache.c:259 [inline] btree_key_cache_fill+0x13da/0x3d60 fs/bcachefs/btree_key_cache.c:309 bch2_btree_path_traverse_cached+0x988/0xe20 fs/bcachefs/btree_key_cache.c:361 bch2_btree_path_traverse_one+0x749/0x47b0 fs/bcachefs/btree_iter.c:1159 bch2_btree_path_traverse fs/bcachefs/btree_iter.h:247 [inline] bch2_btree_iter_peek_slot+0x10b7/0x3950 fs/bcachefs/btree_iter.c:2629 __bch2_bkey_get_iter fs/bcachefs/btree_iter.h:575 [inline] bch2_bkey_get_iter fs/bcachefs/btree_iter.h:589 [inline] bch2_trans_start_alloc_update_noupdate fs/bcachefs/alloc_background.c:464 [inline] bch2_trans_start_alloc_update+0x3d8/0x14b0 fs/bcachefs/alloc_background.c:487 bch2_trigger_pointer fs/bcachefs/buckets.c:588 [inline] __trigger_extent+0x2425/0x6810 fs/bcachefs/buckets.c:740 bch2_trigger_extent+0x90e/0x11a0 fs/bcachefs/buckets.c:869 bch2_key_trigger fs/bcachefs/bkey_methods.h:87 [inline] bch2_key_trigger_old fs/bcachefs/bkey_methods.h:101 [inline] btree_update_nodes_written_trans fs/bcachefs/btree_update_interior.c:651 [inline] btree_update_nodes_written fs/bcachefs/btree_update_interior.c:723 [inline] btree_interior_update_work+0x1661/0x4870 fs/bcachefs/btree_update_interior.c:861 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_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 __x64_sys_mount+0xe4/0x150 fs/namespace.c:4034 x64_sys_call+0x39bf/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:166 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 1 UID: 0 PID: 75 Comm: kworker/u8:5 Not tainted 6.12.0-syzkaller-07834-g06afb0f36106 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: btree_update btree_interior_update_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 syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. 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