From mboxrd@z Thu Jan 1 00:00:00 1970 From: zkabelac@sourceware.org Date: 4 Mar 2012 17:40:59 -0000 Subject: LVM2 ./WHATS_NEW ./WHATS_NEW_DM lib/device/dev ... Message-ID: <20120304174059.28091.qmail@sourceware.org> List-Id: To: lvm-devel@redhat.com MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit CVSROOT: /cvs/lvm2 Module name: LVM2 Changes by: zkabelac at sourceware.org 2012-03-04 17:40:59 Modified files: . : WHATS_NEW WHATS_NEW_DM lib/device : dev-cache.c Log message: Validate udev structures Avoid using NULL pointers from udev. It seems like some older versions of udev were improperly returning NULL in some case, so do not silently break here, and give at least a warning to the user. Patches: http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/WHATS_NEW.diff?cvsroot=lvm2&r1=1.2340&r2=1.2341 http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/WHATS_NEW_DM.diff?cvsroot=lvm2&r1=1.585&r2=1.586 http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/device/dev-cache.c.diff?cvsroot=lvm2&r1=1.72&r2=1.73 --- LVM2/WHATS_NEW 2012/03/04 17:36:23 1.2340 +++ LVM2/WHATS_NEW 2012/03/04 17:40:59 1.2341 @@ -1,6 +1,6 @@ Version 2.02.95 - ================================ - Deactivation of failed thin check on thin pool returns success. + Validate udev structures in _insert_udev_dir(). Scan all devices for lvmetad if 'pvscan --cache' used without device list. Populate lvmcache from lvmetad before displaying PVs in pvscan. (2.02.94) Suppress incorrect -n pvscan warning now always displayed. (2.02.94) --- LVM2/WHATS_NEW_DM 2012/03/03 02:08:37 1.585 +++ LVM2/WHATS_NEW_DM 2012/03/04 17:40:59 1.586 @@ -1,5 +1,6 @@ Version 1.02.74 - ================================ + Deactivation of failed thin check on thin pool returns success. Version 1.02.73 - 3rd March 2012 ================================ --- LVM2/lib/device/dev-cache.c 2012/02/23 13:11:09 1.72 +++ LVM2/lib/device/dev-cache.c 2012/03/04 17:40:59 1.73 @@ -509,14 +509,21 @@ goto bad; udev_list_entry_foreach(device_entry, udev_enumerate_get_list_entry(udev_enum)) { - device = udev_device_new_from_syspath(udev, udev_list_entry_get_name(device_entry)); + if (!(device = udev_device_new_from_syspath(udev, udev_list_entry_get_name(device_entry)))) { + log_warn("Udev returns NULL device."); + continue; + } - node_name = udev_device_get_devnode(device); - r &= _insert(node_name, 0, 0); + if (!(node_name = udev_device_get_devnode(device))) + log_warn("Udev returns NULL devnode."); + else + r &= _insert(node_name, 0, 0); udev_list_entry_foreach(symlink_entry, udev_device_get_devlinks_list_entry(device)) { - symlink_name = udev_list_entry_get_name(symlink_entry); - r &= _insert(symlink_name, 0, 0); + if (!(symlink_name = udev_list_entry_get_name(symlink_entry))) + log_warn("Udev returns NULL name."); + else + r &= _insert(symlink_name, 0, 0); } udev_device_unref(device);