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Sun, 11 Aug 2024 14:14:30 +0800 X-QQ-mid: xmsmtpt1723356870tq8jgqfdj Message-ID: X-QQ-XMAILINFO: MIAHdi1iQo+z2/XQPWS9ixDOMCDaJSPICTqOPXOfFmdqoEreYXqa1ZBPZeAQqW oojZmgHa7NiTX3xYxaqQfEwJ5q6VhwSJNq4pD3Uzr/IB/4qAOar5rvlQvak4Elk9xoQ/FMprZomy 7b3kOkCEJFUbSWliBAdJ3ls9AjkviPumjSyFkcmtQhjsvEnw+SWToMHEMUxC6q1nMZE2sxh6fdFr o4YnEz7LVIIugPivW6/IyXuFwt85NoDQy9YH5HZo5joR3RIWiinOIFhyZJQo/U8J+j7xNGhWPuyn jIB3bvDYrAJqtyH73hEYcL2cCOOOu71bUx89XhhqJek+mtH5KjlyUWNVcfEsOxNCHoGW91kazXuB +oIqtAn4rzeEC20M27xYKOlgkG71dGpUhw/4rBr6Xxul8PNiSNCblPlRS0QhIllq9HTt8uCixioF 2NNsMq5b9EJPnGKty5XgYAMGCQZ5SlXELBHgZ++s4CN0LRL1k/kKS3S87ifXpD2BwSfvWn2anSwG JHGCg+SiZKacVGZ2W5IZxzaaGXLk6MrrmZzqqIFCxq3sMjYq7lIMcbaXPcTQiDdvsSJCeAVQJvv5 4NiuCkp70m8dVP+k2FwTduxefdsc3TWW+V0tFdE+bpp+BWWYoxSNVW0KDbPiDyLAKI8MIC0Tfa47 kKWltLopmgV8G41VD0VJZVy1TPQoPxSXgwFcli8iGp2k4p+4uNbqLzq//ChkjeL25P0O7/tePmF4 p+8+JF+dnzAq+cdOJJfXdXtgA5THL4PBzhIlROVDzE9BtL9oRjlE7tZG8MkM3ymBMcoL0wSU42iP rdBmgEOuWjxyvJJ/LpZ5wH2x0P2s8scYcu7x4TAye9R6njrLgIfQPl2/nCqUsAAfh0TE9yKjLCNp Re64UXVbqM1cteBgDM2QugdXOu/2r4xx50lMVB1jmS2O5m6v3wG2/A7u9OuRjM6RZipq4L2mdc X-QQ-XMRINFO: MSVp+SPm3vtS1Vd6Y4Mggwc= 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 14:14:31 +0800 X-OQ-MSGID: <20240811061430.2984968-2-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->i_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)");