From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out203-205-221-164.mail.qq.com (out203-205-221-164.mail.qq.com [203.205.221.164]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3F43A2572 for ; Sun, 11 Aug 2024 04:56:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=203.205.221.164 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723352170; cv=none; b=cNapAdRgX6UuJjvZDH8qLzntawUBjMtOuDcyenp6oBicdnhER/gxppYigQTx/rgJ7d4CNRVM/wvUqPWNS/05jgm+9j9nEQ62/70v5Oe6sEytdp8LhncEb13tKLocXLEsAqD8P1mjtZKcVUlEWZX4kCuI5RetOyHnE0a0btwgtd4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723352170; c=relaxed/simple; bh=Vz8Kwq5reUBIKlhhCOOHjMye+z5JuFEP3wCQxzqOon8=; h=Message-ID:From:To:Cc:Subject:Date:In-Reply-To:References: MIME-Version; b=KrFV0GkzYYw/J7UK7OaIwjLPGUHvBKfwP5qN+nTwL7hChPLCa5Np30at+r0PlJmHfVpN9tA7/GpC7NqaM0F+g2lSK7iOoBOOOdec2XyBtO/MwvzxnHZs4NOsQOwz8+FLLTiE2r5pBUTirkqRG3H7dWGhE6uWREk3AG1+ZbQMRT4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com; spf=pass smtp.mailfrom=qq.com; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b=wTaXN3/9; arc=none smtp.client-ip=203.205.221.164 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qq.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b="wTaXN3/9" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1723352156; bh=1d/Pa7L9RMz4/IPF83ub21ldEnUxmIYS5oTi791UEzw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=wTaXN3/9l6YidR7uMa5KRrV3hxpHN8Y/ElEsoK3VVU2lp3Eq1PA+/jpNzgHOM398X cGY9PJgO/HucEHt7uXNn+zOIWP7eQeAXFJ6zurT3H+ghs1kg04KQap/7kJzsMzdHbf sERCV/TsPGhjJmNNmvwaUVY1EYyL/9jTdE0QEbDs= Received: from pek-lxu-l1.wrs.com ([111.198.225.4]) by newxmesmtplogicsvrszb9-1.qq.com (NewEsmtp) with SMTP id C743C6F7; Sun, 11 Aug 2024 12:49:52 +0800 X-QQ-mid: xmsmtpt1723351792t5kvx24ho Message-ID: X-QQ-XMAILINFO: M0PjjqbLT90wjYbeoWL1romV8hHwRA/xuwZme9sYYSPs7j9T5bYCNYYe6BFxdE fSztQVxJg3fydp2RyoRnOCSVZJwuV4UbmHEwgqjKvv74r9Mfy6PAWyh2o1w90ieSAd7MBC4t7OV3 Q7o+tj+GiR310FGjV2Ydj9bn/+O9htbmlflLW8FH+SkSTmU+dMCnvNGLOhXp3xZfGd27dAu7cSmd JHv1LbXcmIj5WyyeqaxzJI2a0ml1p69QT8We9dwQIf3cal0rHVBpnSwRbFWvOfrHYx2yXmVgSOc6 gJ9pKqevEH4MBoNG1RD1ORAxOwdfD5W0KQ3EXk4rOv9iuzaZ14cm7GfCfSRc2S5KUXuZ/Fh4zbY/ xlzi19xQFv3PDGY26ZRyzP3N+w9pIzuuDfiqniF84TipChROQyreZ60/ZC0oSzrvCB3uO3952afM 2xdVQbZiNx9loslS0mNORvWuVaIpUEZ9hEVkr8/MoKT506I5VFdtrBNuQ5yBm9YAYgFVJGfnYCRY hfxE9lEmW393Lth++Ahbvxb10qwbAoKbtERLq7Cna7tlQAOi7doeeDF/XWwGs2+HVaWfIyhfAa6x TeXRLFAX8bMkvrXMdHDgpQ5sBDIUP/8Xs19tCsSxz480ySQJdlphhQqpBQNvXIkllnoqmEtjdIKP l6p6rraAuxZuCO2Yv4vRjT8ERGUvLPRjhmPWxYS/9UozkYcjUyH6yLf6YeTR/1PoxC4aYv7FVvlC VVUXxoSY11DXER2Mx/2ixNCmaYKNQLKf9qKV2Gsvmun/QBFl/M4FpgdG/d7vkZoJ3Muzk8Vcp/xa 1GP0aInXufo6e3Nyw6e1Vu8gpTaSz2gaMoCiimq/YZJ7snxINPslOUlScMVafZOSGhzZvvLWmO8J b0s27n/7kz/KBKMRS50aChaxSGiWnAEBG352HAYturG+vbKxdpivqdFY182npj6A== X-QQ-XMRINFO: NI4Ajvh11aEj8Xl/2s1/T8w= From: Edward Adam Davis To: syzbot+0b74d367d6e80661d6df@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [v9fs?] WARNING in v9fs_begin_writeback Date: Sun, 11 Aug 2024 12:49:52 +0800 X-OQ-MSGID: <20240811044952.2909018-2-eadavis@qq.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <0000000000007ec511061f00a7b2@google.com> References: <0000000000007ec511061f00a7b2@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit debug #syz test: upstream c0ecd6388360 diff --git a/mm/filemap.c b/mm/filemap.c index d62150418b91..f854a3fe0335 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -394,6 +394,7 @@ int filemap_fdatawrite_wbc(struct address_space *mapping, return 0; wbc_attach_fdatawrite_inode(wbc, mapping->host); + printk("ino: %lx, comm: %s, %s\n", mapping->host->i_ino, current->comm, __func__); ret = do_writepages(mapping, wbc); wbc_detach_inode(wbc); return ret; @@ -427,6 +428,7 @@ int __filemap_fdatawrite_range(struct address_space *mapping, loff_t start, .range_end = end, }; + printk("ino: %lx, comm: %s, %s\n", mapping->host->i_ino, current->comm, __func__); return filemap_fdatawrite_wbc(mapping, &wbc); } @@ -4227,6 +4229,7 @@ int filemap_invalidate_inode(struct inode *inode, bool flush, .range_end = end, }; + printk("ino: %lx, comm: %s, %s\n", inode->i_ino, current->comm, __func__); filemap_fdatawrite_wbc(mapping, &wbc); } diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 4430ac68e4c4..f76ce90a5396 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -2687,6 +2687,7 @@ int do_writepages(struct address_space *mapping, struct writeback_control *wbc) /* deal with chardevs and other special files */ ret = 0; } + printk("ret: %d, ino: %lx, comm: %s, %s\n", ret, mapping->host->i_ino, current->comm, __func__); if (ret != -ENOMEM || wbc->sync_mode != WB_SYNC_ALL) break; diff --git a/fs/netfs/buffered_write.c b/fs/netfs/buffered_write.c index 4726c315453c..b7877f5c6bb0 100644 --- a/fs/netfs/buffered_write.c +++ b/fs/netfs/buffered_write.c @@ -510,6 +510,7 @@ ssize_t netfs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) netfs_end_io_write(inode); if (ret > 0) ret = generic_write_sync(iocb, ret); + printk("ino: %lx, in state: %lu, comm: %s, %s\n", inode->i_ino, inode->state, current->comm, __func__); return ret; } EXPORT_SYMBOL(netfs_file_write_iter); diff --git a/fs/netfs/write_issue.c b/fs/netfs/write_issue.c index 9258d30cffe3..2720943c47ba 100644 --- a/fs/netfs/write_issue.c +++ b/fs/netfs/write_issue.c @@ -522,6 +522,8 @@ int netfs_writepages(struct address_space *mapping, trace_netfs_write(wreq, netfs_write_trace_writeback); netfs_stat(&netfs_n_wh_writepages); + printk("ino state: %lu, ino: %lx, comm: %s, folio: %p, %s\n", wreq->inode->i_state, + wreq->inode->i_ino, current->comm, folio, __func__); do { _debug("wbiter %lx %llx", folio->index, wreq->start + wreq->submitted); diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c index a97ceb105cd8..7768cc70439d 100644 --- a/fs/9p/vfs_addr.c +++ b/fs/9p/vfs_addr.c @@ -34,6 +34,7 @@ static void v9fs_begin_writeback(struct netfs_io_request *wreq) { struct p9_fid *fid; + printk("ino: %lx, %s\n", wreq->inode->i_ino, __func__); fid = v9fs_fid_find_inode(wreq->inode, true, INVALID_UID, true); if (!fid) { WARN_ONCE(1, "folio expected an open fid inode->i_ino=%lx\n", diff --git a/fs/9p/vfs_dir.c b/fs/9p/vfs_dir.c index e0d34e4e9076..73cff02644b2 100644 --- a/fs/9p/vfs_dir.c +++ b/fs/9p/vfs_dir.c @@ -219,6 +219,7 @@ int v9fs_dir_release(struct inode *inode, struct file *filp) retval = filemap_fdatawrite(inode->i_mapping); spin_lock(&inode->i_lock); + printk("del, ino: %lx, ino sync: %d, comm: %s, %s\n", inode->i_ino, inode->i_state & I_SYNC, current->comm, __func__); hlist_del(&fid->ilist); spin_unlock(&inode->i_lock); put_err = p9_fid_put(fid); diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index 348cc90bf9c5..0ebcd847f2b0 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -44,6 +44,7 @@ int v9fs_file_open(struct inode *inode, struct file *file) struct p9_fid *fid; int omode; + pr_info("ino: %lx, %s\n", inode->i_ino, __func__); p9_debug(P9_DEBUG_VFS, "inode: %p file: %p\n", inode, file); v9ses = v9fs_inode2v9ses(inode); if (v9fs_proto_dotl(v9ses)) @@ -397,12 +398,14 @@ v9fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) { struct file *file = iocb->ki_filp; struct p9_fid *fid = file->private_data; + struct inode *inode = file_inode(file); p9_debug(P9_DEBUG_VFS, "fid %d\n", fid->fid); if (fid->mode & (P9L_DIRECT | P9L_NOWRITECACHE)) return netfs_unbuffered_write_iter(iocb, from); + pr_info("ino: %lx, comm: %s, %s\n", inode->i_ino, current->comm, __func__); p9_debug(P9_DEBUG_CACHE, "(cached)\n"); return netfs_file_write_iter(iocb, from); } @@ -461,6 +464,7 @@ v9fs_file_mmap(struct file *filp, struct vm_area_struct *vma) struct v9fs_session_info *v9ses = v9fs_inode2v9ses(inode); p9_debug(P9_DEBUG_MMAP, "filp :%p\n", filp); + pr_info("ino: %lx, comm: %s, %s\n", inode->i_ino, current->comm, __func__); if (!(v9ses->cache & CACHE_WRITEBACK)) { p9_debug(P9_DEBUG_CACHE, "(read-only mmap mode)");