Dave Chinner c9fbd7bbc2 xfs: clear sb->s_fs_info on mount failure ... We recently had an oops reported on a 4.14 kernel in xfs_reclaim_inodes_count() where sb->s_fs_info pointed to garbage and so the m_perag_tree lookup walked into lala land. Essentially, the machine was under memory pressure when the mount was being run, xfs_fs_fill_super() failed after allocating the xfs_mount and attaching it to sb->s_fs_info. It then cleaned up and freed the xfs_mount, but the sb->s_fs_info field still pointed to the freed memory. Hence when the superblock shrinker then ran it fell off the bad pointer. With the superblock shrinker problem fixed at teh VFS level, this stale s_fs_info pointer is still a problem - we use it unconditionally in ->put_super when the superblock is being torn down, and hence we can still trip over it after a ->fill_super call failure. Hence we need to clear s_fs_info if xfs-fs_fill_super() fails, and we need to check if it's valid in the places it can potentially be dereferenced after a ->fill_super failure. Signed-Off-By: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>		2018-05-15 17:57:05 -07:00
..
libxfs	xfs: factor out nodiscard helpers	2018-05-15 17:57:05 -07:00
scrub	xfs: refactor scrub transaction allocation function	2018-05-15 17:57:05 -07:00
Kconfig	fs/*/Kconfig: drop links to 404-compliant http://acl.bestbits.at	2018-01-01 12:45:37 -07:00
kmem.c	xfs: fall back to vmalloc when allocation log vector buffers	2018-03-11 20:27:55 -07:00
kmem.h	xfs: fall back to vmalloc when allocation log vector buffers	2018-03-11 20:27:55 -07:00
Makefile	xfs: use a b+tree for the in-core extent list	2017-11-06 11:53:41 -08:00
mrlock.h
xfs.h	xfs: always define STATIC to static noinline	2017-11-06 11:53:58 -08:00
xfs_acl.c
xfs_acl.h
xfs_aops.c	iomap: add a swapfile activation function	2018-05-15 17:57:05 -07:00
xfs_aops.h	xfs, dax: introduce xfs_dax_aops	2018-03-30 11:34:55 -07:00
xfs_attr.h
xfs_attr_inactive.c
xfs_attr_list.c	xfs: remove u_int* type usage	2017-11-09 15:50:29 -08:00
xfs_bmap_item.c	xfs: log item flags are racy	2018-05-10 08:56:41 -07:00
xfs_bmap_item.h	xfs: log recovery should replay deferred ops in order	2017-11-27 09:34:08 -08:00
xfs_bmap_util.c	xfs: factor out nodiscard helpers	2018-05-15 17:57:05 -07:00
xfs_bmap_util.h
xfs_buf.c	xfs: don't retry xfs_buf_find on XBF_TRYLOCK failure	2018-05-09 10:04:00 -07:00
xfs_buf.h	xfs: make xfs_buf_incore out of line	2018-05-09 10:04:00 -07:00
xfs_buf_item.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_buf_item.h	Use list_head infra-structure for buffer's log items list	2018-01-29 07:27:22 -08:00
xfs_dir2_readdir.c	xfs: directory scrubber must walk through data block to offset	2018-01-17 21:00:46 -08:00
xfs_discard.c	Force log to disk before reading the AGF during a fstrim	2018-04-10 22:39:04 -07:00
xfs_discard.h
xfs_dquot.c	xfs: refactor dquot iteration	2018-05-15 17:56:59 -07:00
xfs_dquot.h	xfs: refactor dquot iteration	2018-05-15 17:56:59 -07:00
xfs_dquot_item.c	xfs: don't spray logs when dquot flush/purge fail	2018-05-10 08:56:47 -07:00
xfs_dquot_item.h
xfs_error.c	xfs: refactor inode buffer verifier error logging	2018-03-23 18:05:07 -07:00
xfs_error.h	xfs: refactor inode buffer verifier error logging	2018-03-23 18:05:07 -07:00
xfs_export.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2018-04-05 11:56:35 -07:00
xfs_export.h
xfs_extent_busy.c	xfs: merge _xfs_log_force and xfs_log_force	2018-03-14 11:12:52 -07:00
xfs_extent_busy.h
xfs_extfree_item.c	xfs: add bmapi nodiscard flag	2018-05-10 08:56:46 -07:00
xfs_extfree_item.h
xfs_file.c	iomap: iomap_dio_rw() handles all sync writes	2018-05-09 10:04:01 -07:00
xfs_filestream.c	xfs: non-scrub - remove unused function parameters	2018-04-09 10:23:42 -07:00
xfs_filestream.h
xfs_fsmap.c
xfs_fsmap.h
xfs_fsops.c	xfs: convert XFS_AGFL_SIZE to a helper function	2018-03-11 20:27:56 -07:00
xfs_fsops.h	xfs: hoist xfs_fs_geometry to libxfs	2018-01-08 10:54:48 -08:00
xfs_globals.c	xfs: add mount delay debug option	2018-05-15 17:57:05 -07:00
xfs_icache.c	xfs: halt auto-reclamation activities while rebuilding rmap	2018-05-15 17:57:05 -07:00
xfs_icache.h	xfs: halt auto-reclamation activities while rebuilding rmap	2018-05-15 17:57:05 -07:00
xfs_icreate_item.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_icreate_item.h
xfs_inode.c	xfs: factor out nodiscard helpers	2018-05-15 17:57:05 -07:00
xfs_inode.h	xfs: factor out nodiscard helpers	2018-05-15 17:57:05 -07:00
xfs_inode_item.c	xfs: log item flags are racy	2018-05-10 08:56:41 -07:00
xfs_inode_item.h
xfs_ioctl.c	xfs: refactor the geometry structure filling function	2018-01-08 10:54:48 -08:00
xfs_ioctl.h	xfs: remove u_int* type usage	2017-11-09 15:50:29 -08:00
xfs_ioctl32.c	xfs: refactor the geometry structure filling function	2018-01-08 10:54:48 -08:00
xfs_ioctl32.h
xfs_iomap.c	xfs: split out dqget for inodes from regular dqget	2018-05-10 08:56:48 -07:00
xfs_iomap.h
xfs_iops.c	xfs: remove unnecessary xfs_qm_dqattach parameter	2018-05-10 08:56:47 -07:00
xfs_iops.h
xfs_itable.c
xfs_itable.h
xfs_linux.h	xfs: use %px for data pointers when debugging	2018-01-12 14:09:08 -08:00
xfs_log.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_log.h	xfs: non-scrub - remove unused function parameters	2018-04-09 10:23:42 -07:00
xfs_log_cil.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_log_priv.h
xfs_log_recover.c	xfs: remove unused flags arg from xfs_dquot_verify	2018-05-09 10:04:01 -07:00
xfs_message.c
xfs_message.h
xfs_mount.c	xfs: halt auto-reclamation activities while rebuilding rmap	2018-05-15 17:57:05 -07:00
xfs_mount.h	xfs: detect agfl count corruption and reset agfl	2018-03-23 18:05:06 -07:00
xfs_mru_cache.c	xfs: remove filestream item xfs_inode reference	2018-04-09 10:23:39 -07:00
xfs_mru_cache.h	xfs: remove filestream item xfs_inode reference	2018-04-09 10:23:39 -07:00
xfs_ondisk.h
xfs_pnfs.c
xfs_pnfs.h
xfs_qm.c	xfs: rename on-disk dquot counter zap functions	2018-05-10 08:56:48 -07:00
xfs_qm.h	xfs: refactor XFS_QMOPT_DQNEXT out of existence	2018-05-10 08:56:47 -07:00
xfs_qm_bhv.c	xfs: replace XFS_QMOPT_DQALLOC with a simple boolean	2018-05-10 08:56:48 -07:00
xfs_qm_syscalls.c	xfs: replace XFS_QMOPT_DQALLOC with a simple boolean	2018-05-10 08:56:48 -07:00
xfs_quota.h	xfs: split out dqget for inodes from regular dqget	2018-05-10 08:56:48 -07:00
xfs_quotaops.c	xfs: refactor XFS_QMOPT_DQNEXT out of existence	2018-05-10 08:56:47 -07:00
xfs_refcount_item.c	xfs: log item flags are racy	2018-05-10 08:56:41 -07:00
xfs_refcount_item.h	xfs: log recovery should replay deferred ops in order	2017-11-27 09:34:08 -08:00
xfs_reflink.c	xfs: split out dqget for inodes from regular dqget	2018-05-10 08:56:48 -07:00
xfs_reflink.h
xfs_rmap_item.c	xfs: log item flags are racy	2018-05-10 08:56:41 -07:00
xfs_rmap_item.h
xfs_rtalloc.c
xfs_rtalloc.h	xfs: cross-reference the realtime bitmap	2018-01-17 21:00:46 -08:00
xfs_stats.c
xfs_stats.h
xfs_super.c	xfs: clear sb->s_fs_info on mount failure	2018-05-15 17:57:05 -07:00
xfs_super.h	xfs: add scrub to XFS_BUILD_OPTIONS	2018-02-01 21:06:15 -08:00
xfs_symlink.c	xfs: fix double ijoin in xfs_inactive_symlink_rmt()	2018-05-10 08:56:46 -07:00
xfs_symlink.h
xfs_sysctl.c
xfs_sysctl.h	xfs: add mount delay debug option	2018-05-15 17:57:05 -07:00
xfs_sysfs.c	xfs: add mount delay debug option	2018-05-15 17:57:05 -07:00
xfs_sysfs.h
xfs_trace.c	fs: xfs: remove duplicate includes	2017-12-08 17:51:05 -08:00
xfs_trace.h	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_trans.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_trans.h	xfs: add bmapi nodiscard flag	2018-05-10 08:56:46 -07:00
xfs_trans_ail.c	xfs: don't assert fail with AIL lock held	2018-05-10 08:56:46 -07:00
xfs_trans_bmap.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_trans_buf.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_trans_dquot.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_trans_extfree.c	xfs: factor out nodiscard helpers	2018-05-15 17:57:05 -07:00
xfs_trans_inode.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_trans_priv.h	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_trans_refcount.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_trans_rmap.c	xfs: get rid of the log item descriptor	2018-05-10 08:56:46 -07:00
xfs_xattr.c