From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f78.google.com (mail-io1-f78.google.com [209.85.166.78]) (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 7A1DF6BFC2 for ; Sun, 5 May 2024 18:26:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.78 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714933591; cv=none; b=btYiUzuxTUpOWJALL7F7FwtXan05yE2zm+Diirdn8K5KOKtmAv8tTkvASt4v5sYwjNALoULfTLk3Ihkgz9jQcmffYAL7ARNAd04cEugYQw0iiK1wqfMCCSUpfHt/kQanqPY42Up2hJ0zawildTUXnFT3cbf6Rcg9qo1HVhgbut0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714933591; c=relaxed/simple; bh=l/S4nQ1pIW2Ij8sC1Uo9tcK0oWrlQ//6XS9mT3J8X74=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=IcMOA/eBhBs8iNVGyS3vsfSJtTOdTqCavLzGWkcOCDqM0gi32ZPGypVyaMQbsGoPkeJZhJjcKzRsyUsp49MgSHOmzjd+l2pca7BcuyA0UwbhxDtaaKIyvbRF+K1SWtVkeXgURctOy5Ab5Te3RLYzVKJd+mTZkOkStxxnx2QHgHs= 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=209.85.166.78 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-io1-f78.google.com with SMTP id ca18e2360f4ac-7dec4e29827so151953339f.2 for ; Sun, 05 May 2024 11:26:29 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1714933589; x=1715538389; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=GdYsccC/HNyua52hFYRvexwjK07J9vziqNok1+F3NAA=; b=DfQzjT5au0tSfExsrE6MsWxyTkFiz0JYQFeT0J68hBWNnUtpjuUDau510Wto5Kq4TQ d7p43BMHOUQHqfTGj0YQDWhNm3TBMAdPsuWBu8LknFk1YA6FL95I3KC8cmU6CP8TeonS G8BhbY/a8D/Y3i+/T8toT1O9gcdcFfhlc0gw5C0UDYiOtOEKNzh/INcyHuu39KyTDUyb nI4a0Vh4FkPVBgsMM4MZY30RN1O+tfrWXx0c+htLyeCboaQpdoiC/g44iHdj3HX9coR3 yCS1zII9MVsAwauV50FfxA+9FRPo04qIP41Is+amIWiXrt9o99EFc4OySnnabUE1n1HF mdzg== X-Forwarded-Encrypted: i=1; AJvYcCURUd1o1CmSvgZwM1q2CbcyjD3dtesy1WVtGnUqJrBXwYi3nf2KlrV28CPsz7SXsR8EWC5vVV/r798sLJRSdkUC1CllXLZNoeJ+yDrt5Q== X-Gm-Message-State: AOJu0YzaQDvXAChoC7dGeUnaeK7b6vBlKu5Bvew+6F/s8BnpE14jYyNK rmAaFJlMlnOv3M18VaDpN/9HurGFF2ysG0Qc+B2vmGCq2IYirwysTvC9K6jXEtcQQzXepox+jv/ vMXVhFMcMYehyS7nHoDmgyYQnfVA/kbTGUmra4c3CMQHuVA3zPEdf7GU= X-Google-Smtp-Source: AGHT+IHh9ROchKz630HeGwxM3ewa1uUyKI9Cmjhs6ZKY2zoApC9TkquDqFWyaxwR7qsy4JY0h+HngpfvljVl154YMjZXzXfJAOnJ Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:8419:b0:488:77ea:f191 with SMTP id iq25-20020a056638841900b0048877eaf191mr154849jab.2.1714933588861; Sun, 05 May 2024 11:26:28 -0700 (PDT) Date: Sun, 05 May 2024 11:26:28 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000060adac0617b917ab@google.com> Subject: [syzbot] [bcachefs?] KMSAN: uninit-value in bch2_inode_unpack From: syzbot To: bfoster@redhat.com, kent.overstreet@linux.dev, linux-bcachefs@vger.kernel.org, linux-fsdevel@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: 7367539ad4b0 Merge tag 'cxl-fixes-6.9-rc7' of git://git.ke.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1553b31f180000 kernel config: https://syzkaller.appspot.com/x/.config?x=bbf567496022057b dashboard link: https://syzkaller.appspot.com/bug?extid=c123a98c7445baffb168 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/44fb709c4e9c/disk-7367539a.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d25971073eca/vmlinux-7367539a.xz kernel image: https://storage.googleapis.com/syzbot-assets/a327aa91b63e/bzImage-7367539a.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c123a98c7445baffb168@syzkaller.appspotmail.com bcachefs (loop4): done starting filesystem ===================================================== BUG: KMSAN: uninit-value in bch2_inode_unpack_v3 fs/bcachefs/inode.c:270 [inline] BUG: KMSAN: uninit-value in bch2_inode_unpack+0xaf0/0x4c40 fs/bcachefs/inode.c:323 bch2_inode_unpack_v3 fs/bcachefs/inode.c:270 [inline] bch2_inode_unpack+0xaf0/0x4c40 fs/bcachefs/inode.c:323 bch2_inode_peek_nowarn+0x4ec/0x5a0 fs/bcachefs/inode.c:351 bch2_inode_peek fs/bcachefs/inode.c:366 [inline] bch2_inode_find_by_inum_trans+0xb3/0x3d0 fs/bcachefs/inode.c:949 bch2_inode_find_by_inum+0x17b/0x4f0 fs/bcachefs/inode.c:958 bchfs_truncate+0x437/0x1420 fs/bcachefs/fs-io.c:421 bch2_setattr+0x29f/0x2f0 fs/bcachefs/fs.c:882 notify_change+0x1a07/0x1af0 fs/attr.c:497 do_truncate+0x22a/0x2b0 fs/open.c:65 handle_truncate fs/namei.c:3300 [inline] do_open fs/namei.c:3646 [inline] path_openat+0x50d9/0x5b00 fs/namei.c:3799 do_filp_open+0x20e/0x590 fs/namei.c:3826 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1406 do_sys_open fs/open.c:1421 [inline] __do_sys_openat fs/open.c:1437 [inline] __se_sys_openat fs/open.c:1432 [inline] __x64_sys_openat+0x2a1/0x310 fs/open.c:1432 x64_sys_call+0x3a64/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:258 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 Uninit was stored to memory at: memcpy_u64s_small fs/bcachefs/util.h:511 [inline] bkey_reassemble fs/bcachefs/bkey.h:505 [inline] btree_key_cache_fill fs/bcachefs/btree_key_cache.c:454 [inline] bch2_btree_path_traverse_cached_slowpath+0x5f02/0x79f0 fs/bcachefs/btree_key_cache.c:530 bch2_btree_path_traverse_cached+0xd1a/0x1140 bch2_btree_path_traverse_one+0x737/0x5290 fs/bcachefs/btree_iter.c:1155 bch2_btree_path_traverse fs/bcachefs/btree_iter.h:225 [inline] bch2_btree_iter_peek_slot+0x128c/0x3840 fs/bcachefs/btree_iter.c:2473 __bch2_bkey_get_iter fs/bcachefs/btree_iter.h:549 [inline] bch2_bkey_get_iter fs/bcachefs/btree_iter.h:563 [inline] bch2_inode_peek_nowarn+0x208/0x5a0 fs/bcachefs/inode.c:340 bch2_inode_peek fs/bcachefs/inode.c:366 [inline] bch2_inode_find_by_inum_trans+0xb3/0x3d0 fs/bcachefs/inode.c:949 bch2_inode_find_by_inum+0x17b/0x4f0 fs/bcachefs/inode.c:958 bchfs_truncate+0x437/0x1420 fs/bcachefs/fs-io.c:421 bch2_setattr+0x29f/0x2f0 fs/bcachefs/fs.c:882 notify_change+0x1a07/0x1af0 fs/attr.c:497 do_truncate+0x22a/0x2b0 fs/open.c:65 handle_truncate fs/namei.c:3300 [inline] do_open fs/namei.c:3646 [inline] path_openat+0x50d9/0x5b00 fs/namei.c:3799 do_filp_open+0x20e/0x590 fs/namei.c:3826 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1406 do_sys_open fs/open.c:1421 [inline] __do_sys_openat fs/open.c:1437 [inline] __se_sys_openat fs/open.c:1432 [inline] __x64_sys_openat+0x2a1/0x310 fs/open.c:1432 x64_sys_call+0x3a64/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:258 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 Uninit was created at: __kmalloc_large_node+0x231/0x370 mm/slub.c:3921 __do_kmalloc_node mm/slub.c:3954 [inline] __kmalloc_node+0xb07/0x1060 mm/slub.c:3973 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+0x7adb/0x9310 fs/bcachefs/recovery.c:785 bch2_fs_start+0x7b2/0xbd0 fs/bcachefs/super.c:1043 bch2_fs_open+0x135f/0x1670 fs/bcachefs/super.c:2102 bch2_mount+0x90d/0x1d90 fs/bcachefs/fs.c:1903 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: 9730 Comm: syz-executor.4 Not tainted 6.9.0-rc6-syzkaller-00234-g7367539ad4b0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 ===================================================== --- This report is generated by a bot. 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