Darrick J. Wong 7b7820b83f xfs: don't expose internal symlink metadata buffers to the vfs ... Ian Kent reported that for inline symlinks, it's possible for vfs_readlink to hang on to the target buffer returned by _vn_get_link_inline long after it's been freed by xfs inode reclaim. This is a layering violation -- we should never expose XFS internals to the VFS. When the symlink has a remote target, we allocate a separate buffer, copy the internal information, and let the VFS manage the new buffer's lifetime. Let's adapt the inline code paths to do this too. It's less efficient, but fixes the layering violation and avoids the need to adapt the if_data lifetime to rcu rules. Clearly I don't care about readlink benchmarks. As a side note, this fixes the minor locking violation where we can access the inode data fork without taking any locks; proper locking (and eliminating the possibility of having to switch inode_operations on a live inode) is essential to online repair coordinating repairs correctly. Reported-by: Ian Kent <raven@themaw.net> Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com>		2021-12-21 09:49:41 -08:00
..
libxfs	xfs: Fix the free logic of state in xfs_attr_node_hasname	2021-11-24 10:06:02 -08:00
scrub	xfs: fix quotaoff mutex usage now that we don't support disabling it	2021-12-21 09:49:41 -08:00
Kconfig	…
Makefile	…
kmem.c	xfs: replace kmem_alloc_large() with kvmalloc()	2021-08-09 15:57:43 -07:00
kmem.h	xfs: remove kmem_zone typedef	2021-10-22 16:00:31 -07:00
mrlock.h	…
xfs.h	…
xfs_acl.c	overlayfs update for 5.15	2021-09-02 09:21:27 -07:00
xfs_acl.h	vfs: add rcu argument to ->get_acl() callback	2021-08-18 22:08:24 +02:00
xfs_aops.c	xfs: punch out data fork delalloc blocks on COW writeback failure	2021-10-22 16:04:36 -07:00
xfs_aops.h	…
xfs_attr_inactive.c	xfs: rename _zone variables to _cache	2021-10-22 16:04:20 -07:00
xfs_attr_list.c	xfs: replace XFS_FORCED_SHUTDOWN with xfs_is_shutdown	2021-08-19 10:07:13 -07:00
xfs_bio_io.c	xfs: async blkdev cache flush	2021-06-21 10:05:51 -07:00
xfs_bmap_item.c	xfs: create slab caches for frequently-used deferred items	2021-10-22 16:04:36 -07:00
xfs_bmap_item.h	xfs: rename _zone variables to _cache	2021-10-22 16:04:20 -07:00
xfs_bmap_util.c	New code for 5.15:	2021-09-02 08:26:03 -07:00
xfs_bmap_util.h	…
xfs_buf.c	xfs: rename _zone variables to _cache	2021-10-22 16:04:20 -07:00
xfs_buf.h	xfs: rename buffer cache index variable b_bn	2021-08-19 10:07:15 -07:00
xfs_buf_item.c	xfs: rename _zone variables to _cache	2021-10-22 16:04:20 -07:00
xfs_buf_item.h	xfs: rename _zone variables to _cache	2021-10-22 16:04:20 -07:00
xfs_buf_item_recover.c	xfs: remove the xfs_dinode_t typedef	2021-10-14 09:19:33 -07:00
xfs_dir2_readdir.c	xfs: replace XFS_FORCED_SHUTDOWN with xfs_is_shutdown	2021-08-19 10:07:13 -07:00
xfs_discard.c	xfs: convert mount flags to features	2021-08-19 10:07:12 -07:00
xfs_discard.h	…
xfs_dquot.c	xfs: rename _zone variables to _cache	2021-10-22 16:04:20 -07:00
xfs_dquot.h	xfs: queue inactivation immediately when quota is nearing enforcement	2021-08-09 10:52:18 -07:00
xfs_dquot_item.c	xfs: remove support for disabling quota accounting on a mounted file system	2021-08-06 11:05:36 -07:00
xfs_dquot_item.h	xfs: remove support for disabling quota accounting on a mounted file system	2021-08-06 11:05:36 -07:00
xfs_dquot_item_recover.c	xfs: replace xfs_sb_version checks with feature flag checks	2021-08-19 10:07:12 -07:00
xfs_error.c	xfs: convert bp->b_bn references to xfs_buf_daddr()	2021-08-19 10:07:15 -07:00
xfs_error.h	xfs: add trace point for fs shutdown	2021-08-18 18:46:00 -07:00
xfs_export.c	xfs: convert remaining mount flags to state flags	2021-08-19 10:07:13 -07:00
xfs_export.h	…
xfs_extent_busy.c	xfs: pass perags through to the busy extent code	2021-06-02 10:48:24 +10:00
xfs_extent_busy.h	xfs: pass perags through to the busy extent code	2021-06-02 10:48:24 +10:00
xfs_extfree_item.c	xfs: reduce the size of struct xfs_extent_free_item	2021-10-22 16:04:36 -07:00
xfs_extfree_item.h	xfs: rename _zone variables to _cache	2021-10-22 16:04:20 -07:00
xfs_file.c	gfs2: Fix mmap + page fault deadlocks	2021-11-02 12:25:03 -07:00
xfs_filestream.c	xfs: convert remaining mount flags to state flags	2021-08-19 10:07:13 -07:00
xfs_filestream.h	xfs: convert mount flags to features	2021-08-19 10:07:12 -07:00
xfs_fsmap.c	xfs: replace xfs_sb_version checks with feature flag checks	2021-08-19 10:07:12 -07:00
xfs_fsmap.h	…
xfs_fsops.c	xfs: convert remaining mount flags to state flags	2021-08-19 10:07:13 -07:00
xfs_fsops.h	…
xfs_globals.c	…
xfs_health.c	xfs: replace XFS_FORCED_SHUTDOWN with xfs_is_shutdown	2021-08-19 10:07:13 -07:00
xfs_icache.c	xfs: remove xfs_inew_wait	2021-11-24 10:06:02 -08:00
xfs_icache.h	xfs: throttle inode inactivation queuing on memory reclaim	2021-08-09 11:13:17 -07:00
xfs_icreate_item.c	xfs: rename _zone variables to _cache	2021-10-22 16:04:20 -07:00
xfs_icreate_item.h	xfs: rename _zone variables to _cache	2021-10-22 16:04:20 -07:00
xfs_inode.c	xfs: remove incorrect ASSERT in xfs_rename	2021-12-01 17:27:48 -08:00
xfs_inode.h	xfs: remove xfs_inew_wait	2021-11-24 10:06:02 -08:00
xfs_inode_item.c	xfs: rename _zone variables to _cache	2021-10-22 16:04:20 -07:00
xfs_inode_item.h	xfs: rename _zone variables to _cache	2021-10-22 16:04:20 -07:00
xfs_inode_item_recover.c	xfs: replace xfs_sb_version checks with feature flag checks	2021-08-19 10:07:12 -07:00
xfs_ioctl.c	xfs: Use kvcalloc() instead of kvzalloc()	2021-10-20 18:14:12 -05:00
xfs_ioctl.h	…
xfs_ioctl32.c	xfs: convert xfs_fs_geometry to use mount feature checks	2021-08-19 10:07:13 -07:00
xfs_ioctl32.h	…
xfs_iomap.c	xfs: only set IOMAP_F_SHARED when providing a srcmap to a write	2021-08-23 17:32:51 -07:00
xfs_iomap.h	…
xfs_iops.c	xfs: don't expose internal symlink metadata buffers to the vfs	2021-12-21 09:49:41 -08:00
xfs_iops.h	…
xfs_itable.c	xfs: replace xfs_sb_version checks with feature flag checks	2021-08-19 10:07:12 -07:00
xfs_itable.h	…
xfs_iwalk.c	xfs: avoid buffer deadlocks when walking fs inodes	2021-08-09 11:13:16 -07:00
xfs_iwalk.h	…
xfs_linux.h	xfs: async blkdev cache flush	2021-06-21 10:05:51 -07:00
xfs_log.c	xfs: rename _zone variables to _cache	2021-10-22 16:04:20 -07:00
xfs_log.h	xfs: AIL needs asynchronous CIL forcing	2021-08-16 12:09:30 -07:00
xfs_log_cil.c	xfs: convert mount flags to features	2021-08-19 10:07:12 -07:00
xfs_log_priv.h	xfs: rename _zone variables to _cache	2021-10-22 16:04:20 -07:00
xfs_log_recover.c	xfs: port the defer ops capture and continue to resource capture	2021-10-14 09:19:31 -07:00
xfs_message.c	…
xfs_message.h	once: implement DO_ONCE_LITE for non-fast-path "do once" functionality	2021-06-28 15:54:57 -07:00
xfs_mount.c	xfs: compute maximum AG btree height for critical reservation calculation	2021-10-19 11:45:15 -07:00
xfs_mount.h	xfs: compute maximum AG btree height for critical reservation calculation	2021-10-19 11:45:15 -07:00
xfs_mru_cache.c	xfs: rename _zone variables to _cache	2021-10-22 16:04:20 -07:00
xfs_mru_cache.h	…
xfs_ondisk.h	xfs: rename struct xfs_legacy_ictimestamp	2021-04-22 18:29:25 -07:00
xfs_pnfs.c	xfs: replace XFS_FORCED_SHUTDOWN with xfs_is_shutdown	2021-08-19 10:07:13 -07:00
xfs_pnfs.h	…
xfs_pwork.c	…
xfs_pwork.h	…
xfs_qm.c	xfs: remove the xfs_dqblk_t typedef	2021-10-14 09:19:33 -07:00
xfs_qm.h	xfs: rename _zone variables to _cache	2021-10-22 16:04:20 -07:00
xfs_qm_bhv.c	xfs: replace xfs_sb_version checks with feature flag checks	2021-08-19 10:07:12 -07:00
xfs_qm_syscalls.c	xfs: fix quotaoff mutex usage now that we don't support disabling it	2021-12-21 09:49:41 -08:00
xfs_quota.h	xfs: queue inactivation immediately when quota is nearing enforcement	2021-08-09 10:52:18 -07:00
xfs_quotaops.c	xfs: remove the active vs running quota differentiation	2021-08-06 11:05:37 -07:00
xfs_refcount_item.c	xfs: create slab caches for frequently-used deferred items	2021-10-22 16:04:36 -07:00
xfs_refcount_item.h	xfs: rename _zone variables to _cache	2021-10-22 16:04:20 -07:00
xfs_reflink.c	xfs: rename xfs_bmap_add_free to xfs_free_extent_later	2021-10-22 16:04:36 -07:00
xfs_reflink.h	xfs: convert xfs_sb_version_has checks to use mount features	2021-08-19 10:07:14 -07:00
xfs_rmap_item.c	xfs: create slab caches for frequently-used deferred items	2021-10-22 16:04:36 -07:00
xfs_rmap_item.h	xfs: rename _zone variables to _cache	2021-10-22 16:04:20 -07:00
xfs_rtalloc.c	xfs: replace xfs_sb_version checks with feature flag checks	2021-08-19 10:07:12 -07:00
xfs_rtalloc.h	xfs: make the record pointer passed to query_range functions const	2021-08-18 18:46:01 -07:00
xfs_stats.c	…
xfs_stats.h	…
xfs_super.c	xfs: remove all COW fork extents when remounting readonly	2021-12-07 10:17:29 -08:00
xfs_super.h	xfs: remove xfs_blkdev_issue_flush	2021-06-21 10:05:46 -07:00
xfs_symlink.c	xfs: don't expose internal symlink metadata buffers to the vfs	2021-12-21 09:49:41 -08:00
xfs_symlink.h	…
xfs_sysctl.c	…
xfs_sysctl.h	…
xfs_sysfs.c	xfs: replace snprintf in show functions with sysfs_emit	2021-10-19 11:45:12 -07:00
xfs_sysfs.h	…
xfs_trace.c	xfs: add trace point for fs shutdown	2021-08-18 18:46:00 -07:00
xfs_trace.h	xfs: prepare xfs_btree_cur for dynamic cursor heights	2021-10-19 11:45:14 -07:00
xfs_trans.c	xfs: shut down filesystem if we xfs_trans_cancel with deferred work items	2021-12-21 09:49:41 -08:00
xfs_trans.h	xfs: rename _zone variables to _cache	2021-10-22 16:04:20 -07:00
xfs_trans_ail.c	xfs: replace XFS_FORCED_SHUTDOWN with xfs_is_shutdown	2021-08-19 10:07:13 -07:00
xfs_trans_buf.c	xfs: introduce xfs_buf_daddr()	2021-08-19 10:07:14 -07:00
xfs_trans_dquot.c	xfs: rename _zone variables to _cache	2021-10-22 16:04:20 -07:00
xfs_trans_priv.h	…
xfs_xattr.c	…