Security update for the Linux Kernel

The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes. This new feature was added: - Btrfs: Remove empty block groups in the background The following security bugs were fixed: - CVE-2018-3665: Prevent disclosure of FPU registers (including XMM and AVX registers) between processes. These registers might contain encryption keys when doing SSE accelerated AES enc/decryption (bsc#1087086) The following non-security bugs were fixed: - ALSA: timer: Fix pause event notification (bsc#973378). - Btrfs: Avoid trucating page or punching hole in a already existed hole (bsc#1088998). - Btrfs: Avoid truncate tailing page if fallocate range does not exceed inode size (bsc#1094424). - Btrfs: Fix lost-data-profile caused by auto removing bg. - Btrfs: Fix misuse of chunk mutex - Btrfs: Fix out-of-space bug (bsc#1089231). - Btrfs: Set relative data on clear btrfs_block_group_cache->pinned. - Btrfs: Use ref_cnt for set_block_group_ro() (bsc#1089239). - Btrfs: add alloc_fs_devices and switch to it (bsc#1089205). - Btrfs: add btrfs_alloc_device and switch to it (bsc#1089204). - Btrfs: add missing discards when unpinning extents with -o discard. - Btrfs: add missing inode update when punching hole (bsc#1089006). - Btrfs: add support for asserts (bsc#1089207). - Btrfs: avoid syncing log in the fast fsync path when not necessary (bsc#1089010). - Btrfs: btrfs_issue_discard ensure offset/length are aligned to sector boundaries. - Btrfs: check pending chunks when shrinking fs to avoid corruption (bsc#1089235). - Btrfs: cleanup backref search commit root flag stuff (bsc#1089200). - Btrfs: delete chunk allocation attemp when setting block group ro. - Btrfs: do not leak transaction in btrfs_sync_file() (bsc#1089210). - Btrfs: do not mix the ordered extents of all files together during logging the inodes (bsc#1089214). - Btrfs: do not remove extents and xattrs when logging new names (bsc#1089005). - Btrfs: eliminate races in worker stopping code (bsc#1089211). - Btrfs: ensure deletion from pinned_chunks list is protected. - Btrfs: explictly delete unused block groups in close_ctree and ro-remount. - Btrfs: fix -ENOSPC on block group removal. - Btrfs: fix -ENOSPC when finishing block group creation. - Btrfs: fix BUG_ON in btrfs_orphan_add() when delete unused block group. - Btrfs: fix NULL pointer crash when running balance and scrub concurrently (bsc#1089220). - Btrfs: fix chunk allocation regression leading to transaction abort (bsc#1089236). - Btrfs: fix crash caused by block group removal. - Btrfs: fix data loss in the fast fsync path (bsc#1089007). - Btrfs: fix deadlock caused by fsync when logging directory entries (bsc#1093194). - Btrfs: fix directory inconsistency after fsync log replay (bsc#1089001). - Btrfs: fix directory recovery from fsync log (bsc#1088999). - Btrfs: fix empty symlink after creating symlink and fsync parent dir (bsc#1093195). - Btrfs: fix file loss on log replay after renaming a file and fsync (bsc#1093196). - Btrfs: fix file/data loss caused by fsync after rename and new inode (bsc#1089241). - Btrfs: fix find_free_dev_extent() malfunction in case device tree has hole (bsc#1089232). - Btrfs: fix fitrim discarding device area reserved for boot loader's use. - Btrfs: fix freeing used extent after removing empty block group. - Btrfs: fix freeing used extents after removing empty block group. - Btrfs: fix fs mapping extent map leak (bsc#1089229). - Btrfs: fix fsync data loss after a ranged fsync (bsc#1089221). - Btrfs: fix fsync data loss after adding hard link to inode (bsc#1089004). - Btrfs: fix fsync data loss after append write (bsc#1089238). - Btrfs: fix fsync log replay for inodes with a mix of regular refs and extrefs (bsc#1089003). - Btrfs: fix fsync race leading to invalid data after log replay (bsc#1089000). - Btrfs: fix fsync when extend references are added to an inode (bsc#1089002). - Btrfs: fix fsync xattr loss in the fast fsync path (bsc#1094423). - Btrfs: fix invalid extent maps due to hole punching (bsc#1094425). - Btrfs: fix kernel oops while reading compressed data (bsc#1089192). - Btrfs: fix log replay failure after linking special file and fsync (bsc#1089016). - Btrfs: fix memory leak after block remove + trimming. - Btrfs: fix metadata inconsistencies after directory fsync (bsc#1093197). - Btrfs: fix race between balance and unused block group deletion (bsc#1089237). - Btrfs: fix race between fs trimming and block group remove/allocation. - Btrfs: fix race between scrub and block group deletion. - Btrfs: fix race between transaction commit and empty block group removal. - Btrfs: fix race conditions in BTRFS_IOC_FS_INFO ioctl (bsc#1089206). - Btrfs: fix racy system chunk allocation when setting block group ro (bsc#1089233). - Btrfs: fix regression in raid level conversion (bsc#1089234). - Btrfs: fix skipped error handle when log sync failed (bsc#1089217). - Btrfs: fix stale dir entries after removing a link and fsync (bsc#1089011). - Btrfs: fix the number of transaction units needed to remove a block group. - Btrfs: fix the skipped transaction commit during the file sync (bsc#1089216). - Btrfs: fix unprotected alloc list insertion during the finishing procedure of replace (bsc#1089215). - Btrfs: fix unprotected assignment of the target device (bsc#1089222). - Btrfs: fix unprotected deletion from pending_chunks list. - Btrfs: fix unprotected device list access when getting the fs information (bsc#1089228). - Btrfs: fix unprotected device's variants on 32bits machine (bsc#1089227). - Btrfs: fix unprotected device->bytes_used update (bsc#1089225). - Btrfs: fix unreplayable log after snapshot delete + parent dir fsync (bsc#1089240). - Btrfs: fix up read_tree_block to return proper error (bsc#1080837). - Btrfs: fix wrong device bytes_used in the super block (bsc#1089224). - Btrfs: fix wrong disk size when writing super blocks (bsc#1089223). - Btrfs: fix xattr loss after power failure (bsc#1094436). - Btrfs: handle non-fatal errors in btrfs_qgroup_inherit() (bsc#1089013). - Btrfs: initialize the seq counter in struct btrfs_device (bsc#1094437). - Btrfs: iterate over unused chunk space in FITRIM. - Btrfs: make btrfs_issue_discard return bytes discarded. - Btrfs: make btrfs_search_forward return with nodes unlocked (bsc#1094422). - Btrfs: make sure to copy everything if we rename (bsc#1088997). - Btrfs: make the chunk allocator completely tree lockless (bsc#1089202). - Btrfs: move btrfs_truncate_page to btrfs_cont_expand instead of btrfs_truncate (bsc#1089201). - Btrfs: nuke write_super from comments (bsc#1089199). - Btrfs: only drop modified extents if we logged the whole inode (bsc#1089213). - Btrfs: only update disk_i_size as we remove extents (bsc#1089209). - Btrfs: qgroup: return EINVAL if level of parent is not higher than child's (bsc#1089012). - Btrfs: remove deleted xattrs on fsync log replay (bsc#1089008). - Btrfs: remove empty block groups automatically. - Btrfs: remove non-sense btrfs_error_discard_extent() function (bsc#1089230). - Btrfs: remove parameter blocksize from read_tree_block (bsc#1080837). - Btrfs: remove transaction from send (bsc#1089218). - Btrfs: remove unnecessary locking of cleaner_mutex to avoid deadlock. - Btrfs: remove unused max_key arg from btrfs_search_forward (bsc#1094421). - Btrfs: return an error from btrfs_wait_ordered_range (bsc#1089212). - Btrfs: set inode's logged_trans/last_log_commit after ranged fsync (bsc#1093198). - Btrfs: skip superblocks during discard. - Btrfs: stop refusing the relocation of chunk 0 (bsc#1089208). - Btrfs: update free_chunk_space during allocting a new chunk (bsc#1089226). - Btrfs: use global reserve when deleting unused block group after ENOSPC. - Btrfs: use nodesize everywhere, kill leafsize (bsc#1080837). - Btrfs: wait ordered range before doing direct io (bsc#1089203). - KVM: x86: Sync back MSR_IA32_SPEC_CTRL to VCPU data structure (bsc#1096242, bsc#1096281). - Xen counterparts of eager FPU implementation. - balloon: do not BUG() when balloon is empty (bsc#1083347). - fs: btrfs: volumes.c: Fix for possible null pointer dereference (bsc#1089219). - kernel: Fix memory leak on EP11 target list processing (bnc#1096746). - kvm/powerpc: Add new ioctl to retreive server MMU infos (bsc#1094244). - mm, page_alloc: do not break __GFP_THISNODE by zonelist reset (bsc#1079152, VM Functionality). - module: Fix locking in symbol_put_addr() (bsc#1097445). - netfront: make req_prod check properly deal with index wraps (bsc#1046610). - powerpc/64s: Fix compiler store ordering to SLB shadow area (bsc#1094244). - powerpc/mm/hash: Add missing isync prior to kernel stack SLB switch (bsc#1094244). - powerpc/pseries: Define MCE error event section (bsc#1094244). - powerpc/pseries: Display machine check error details (bsc#1094244). - powerpc/pseries: Dump and flush SLB contents on SLB MCE errors (bsc#1094244). - powerpc/pseries: convert rtas_log_buf to linear allocation (bsc#1094244). - qla2xxx: Mask off Scope bits in retry delay (bsc#1068054). - s390/cpum_sf: ensure sample frequency of perf event attributes is non-zero (bnc#1096746). - s390/dasd: fix failing path verification (bnc#1096746). - trace: module: Maintain a valid user count (bsc#1097443). - x86/boot: Fix early command-line parsing when partial word matches (bsc#1096140). - x86/bugs: spec_ctrl must be cleared from cpu_caps_set when being disabled (bsc#1096140). - x86: Fix /proc/mtrr with base/size more than 44bits (bsc#1052351). - xen/x86/entry/64: Do not use IST entry for #BP stack (bsc#1087088). - xfs: avoid xfs_buf hang in lookup node directory corruption (bsc#989401). - xfs: only update the last_sync_lsn when a transaction completes (bsc#989401).