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linux-stable/fs/xfs
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Brian Foster 9f2a450580 xfs: fix log block underflow during recovery cycle verification 
It is possible for mkfs to format very small filesystems with too
small of an internal log with respect to the various minimum size
and block count requirements. If this occurs when the log happens to
be smaller than the scan window used for cycle verification and the
scan wraps the end of the log, the start_blk calculation in
xlog_find_head() underflows and leads to an attempt to scan an
invalid range of log blocks. This results in log recovery failure
and a failed mount.

Since there may be filesystems out in the wild with this kind of
geometry, we cannot simply refuse to mount. Instead, cap the scan
window for cycle verification to the size of the physical log. This
ensures that the cycle verification proceeds as expected when the
scan wraps the end of the log.

Reported-by: Zorro Lang <zlang@redhat.com>
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
 		2017-10-26 15:38:29 -07:00
..
libxfs xfs: add a new xfs_iext_lookup_extent_before helper 2017-10-26 15:38:28 -07:00
scrub xfs: scrub quota information 2017-10-26 15:38:26 -07:00
Kconfig xfs: create an ioctl to scrub AG metadata 2017-10-26 15:38:23 -07:00
Makefile xfs: scrub quota information 2017-10-26 15:38:26 -07:00
kmem.c mm, vmalloc: use __GFP_HIGHMEM implicitly 2017-05-08 17:15:13 -07:00
kmem.h xfs: map KM_MAYFAIL to __GFP_RETRY_MAYFAIL 2017-07-12 16:26:03 -07:00
mrlock.h
…
xfs.h xfs: define fatal assert build time tunable 2017-06-19 08:59:10 -07:00
xfs_acl.c xfs: don't change inode mode if ACL update fails 2017-10-11 10:21:06 -07:00
xfs_acl.h xfs: Don't clear SGID when inheriting ACLs 2017-06-27 18:23:21 -07:00
xfs_aops.c xfs: trim writepage mapping to within eof 2017-10-16 12:26:50 -07:00
xfs_aops.h xfs: perform dax_device lookup at mount 2017-08-31 09:31:47 -07:00
xfs_attr.h xfs: scrub extended attributes 2017-10-26 15:38:26 -07:00
xfs_attr_inactive.c xfs: fail if xattr inactivation hits a hole 2017-10-26 15:38:22 -07:00
xfs_attr_list.c xfs: scrub extended attributes 2017-10-26 15:38:26 -07:00
xfs_bmap_item.c xfs: remove the ip argument to xfs_defer_finish 2017-09-01 10:55:30 -07:00
xfs_bmap_item.h xfs: log bmap intent items 2016-10-04 11:05:44 -07:00
xfs_bmap_util.c xfs: add asserts for the mmap lock in xfs_{insert,collapse}_file_space 2017-10-26 15:38:28 -07:00
xfs_bmap_util.h xfs: simplify the xfs_getbmap interface 2017-10-26 15:38:20 -07:00
xfs_buf.c xfs: buffer lru reference count error injection tag 2017-10-26 15:38:23 -07:00
xfs_buf.h xfs: buffer lru reference count error injection tag 2017-10-26 15:38:23 -07:00
xfs_buf_item.c xfs: fix compiler warnings 2017-09-02 08:22:19 -07:00
xfs_buf_item.h xfs: remove unnecessary dirty bli format check for ordered bufs 2017-09-01 10:55:30 -07:00
xfs_dir2_readdir.c xfs: scrub directory metadata 2017-10-26 15:38:25 -07:00
xfs_discard.c xfs: remove double-underscore integer types 2017-06-19 14:11:33 -07:00
xfs_discard.h xfs: don't block the log commit handler for discards 2017-02-09 11:36:40 -08:00
xfs_dquot.c xfs: remove the ip argument to xfs_defer_finish 2017-09-01 10:55:30 -07:00
xfs_dquot.h
…
xfs_dquot_item.c
…
xfs_dquot_item.h
…
xfs_error.c xfs: buffer lru reference count error injection tag 2017-10-26 15:38:23 -07:00
xfs_error.h xfs: buffer lru reference count error injection tag 2017-10-26 15:38:23 -07:00
xfs_export.c
…
xfs_export.h
…
xfs_extent_busy.c xfs: fix len comparison in xfs_extent_busy_trim 2017-02-16 17:20:12 -08:00
xfs_extent_busy.h xfs: improve handling of busy extents in the low-level allocator 2017-02-09 10:50:25 -08:00
xfs_extfree_item.c xfs: better log intent item refcount checking 2017-04-25 09:40:42 -07:00
xfs_extfree_item.h
…
xfs_file.c xfs: scrub directory metadata 2017-10-26 15:38:25 -07:00
xfs_filestream.c
…
xfs_filestream.h
…
xfs_fsmap.c xfs: move two more RT specific functions into CONFIG_XFS_RT 2017-10-16 12:26:50 -07:00
xfs_fsmap.h xfs: implement the GETFSMAP ioctl 2017-04-03 15:18:17 -07:00
xfs_fsops.c xfs: remove double-underscore integer types 2017-06-19 14:11:33 -07:00
xfs_fsops.h xfs: remove double-underscore integer types 2017-06-19 14:11:33 -07:00
xfs_globals.c xfs: define fatal assert build time tunable 2017-06-19 08:59:10 -07:00
xfs_icache.c xfs: return a distinct error code value for IGET_INCORE cache misses 2017-10-26 15:38:23 -07:00
xfs_icache.h xfs: check if an inode is cached and allocated 2017-06-19 14:11:34 -07:00
xfs_icreate_item.c fs: xfs: xfs_icreate_item: constify xfs_item_ops structure 2016-11-28 14:57:42 +11:00
xfs_icreate_item.h
…
xfs_inode.c xfs: remove if_rdev 2017-10-26 15:38:27 -07:00
xfs_inode.h xfs: remove if_rdev 2017-10-26 15:38:27 -07:00
xfs_inode_item.c xfs: remove if_rdev 2017-10-26 15:38:27 -07:00
xfs_inode_item.h
…
xfs_ioctl.c xfs: scrub inodes 2017-10-26 15:38:25 -07:00
xfs_ioctl.h xfs: remove double-underscore integer types 2017-06-19 14:11:33 -07:00
xfs_ioctl32.c xfs: create an ioctl to scrub AG metadata 2017-10-26 15:38:23 -07:00
xfs_ioctl32.h xfs: remove double-underscore integer types 2017-06-19 14:11:33 -07:00
xfs_iomap.c xfs: update i_size after unwritten conversion in dio completion 2017-09-26 10:55:19 -07:00
xfs_iomap.h xfs: update i_size after unwritten conversion in dio completion 2017-09-26 10:55:19 -07:00
xfs_iops.c xfs: remove if_rdev 2017-10-26 15:38:27 -07:00
xfs_iops.h
…
xfs_itable.c xfs: remove if_rdev 2017-10-26 15:38:27 -07:00
xfs_itable.h xfs: create inode pointer verifiers 2017-10-26 15:38:23 -07:00
xfs_linux.h xfs: refactor btree block header checking functions 2017-10-26 15:38:23 -07:00
xfs_log.c xfs: Fix bool initialization/comparison 2017-10-11 10:21:06 -07:00
xfs_log.h xfs: remove double-underscore integer types 2017-06-19 14:11:33 -07:00
xfs_log_cil.c xfs: Fix leak of discard bio 2017-08-04 13:43:36 -07:00
xfs_log_priv.h xfs: remove double-underscore integer types 2017-06-19 14:11:33 -07:00
xfs_log_recover.c xfs: fix log block underflow during recovery cycle verification 2017-10-26 15:38:29 -07:00
xfs_message.c xfs: define bug_on_assert debug mode sysfs tunable 2017-06-19 08:59:10 -07:00
xfs_message.h
…
xfs_mount.c xfs: Fix bool initialization/comparison 2017-10-11 10:21:06 -07:00
xfs_mount.h xfs: convert drop_writes to use the errortag mechanism 2017-06-27 18:23:20 -07:00
xfs_mru_cache.c
…
xfs_mru_cache.h
…
xfs_ondisk.h xfs: Don't log uninitialised fields in inode structures 2017-10-11 10:21:06 -07:00
xfs_pnfs.c xfs: update i_size after unwritten conversion in dio completion 2017-09-26 10:55:19 -07:00
xfs_pnfs.h xfs: remove i_iolock and use i_rwsem in the VFS inode instead 2016-11-30 14:33:25 +11:00
xfs_qm.c xfs: replace xfs_qm_get_rtblks with a direct call to xfs_bmap_count_leaves 2017-09-01 13:08:26 -07:00
xfs_qm.h
…
xfs_qm_bhv.c xfs: remove double-underscore integer types 2017-06-19 14:11:33 -07:00
xfs_qm_syscalls.c xfs: wait on new inodes during quotaoff dquot release 2017-04-28 08:11:08 -07:00
xfs_quota.h
…
xfs_quotaops.c VFS: Convert sb->s_flags & MS_RDONLY to sb_rdonly(sb) 2017-07-17 08:45:34 +01:00
xfs_refcount_item.c xfs: remove the ip argument to xfs_defer_finish 2017-09-01 10:55:30 -07:00
xfs_refcount_item.h xfs: log refcount intent items 2016-10-03 09:11:21 -07:00
xfs_reflink.c xfs: add a new xfs_iext_lookup_extent_before helper 2017-10-26 15:38:28 -07:00
xfs_reflink.h xfs: separate function to check if inode shares extents 2017-06-19 14:11:35 -07:00
xfs_rmap_item.c xfs: better log intent item refcount checking 2017-04-25 09:40:42 -07:00
xfs_rmap_item.h
…
xfs_rtalloc.c xfs: remove the ip argument to xfs_defer_finish 2017-09-01 10:55:30 -07:00
xfs_rtalloc.h xfs: create block pointer check functions 2017-10-26 15:38:23 -07:00
xfs_stats.c xfs: remove double-underscore integer types 2017-06-19 14:11:33 -07:00
xfs_stats.h xfs: remove double-underscore integer types 2017-06-19 14:11:33 -07:00
xfs_super.c Convert fs/*/* to SB_I_VERSION 2017-10-18 18:51:27 -04:00
xfs_super.h xfs: don't block the log commit handler for discards 2017-02-09 11:36:40 -08:00
xfs_symlink.c xfs: remove the ip argument to xfs_defer_finish 2017-09-01 10:55:30 -07:00
xfs_symlink.h xfs: allow reading of already-locked remote symbolic link 2017-06-20 10:45:22 -07:00
xfs_sysctl.c xfs: garbage collect old cowextsz reservations 2016-10-05 16:26:28 -07:00
xfs_sysctl.h xfs: define bug_on_assert debug mode sysfs tunable 2017-06-19 08:59:10 -07:00
xfs_sysfs.c xfs: replace log_badcrc_factor knob with error injection tag 2017-06-27 18:23:21 -07:00
xfs_sysfs.h
…
xfs_trace.c xfs: implement the GETFSMAP ioctl 2017-04-03 15:18:17 -07:00
xfs_trace.h xfs: remove XFS_BMAP_TRACE_EXLIST 2017-10-26 15:38:27 -07:00
xfs_trans.c xfs: refactor xfs_trans_roll 2017-09-01 10:55:30 -07:00
xfs_trans.h xfs: disallow marking previously dirty buffers as ordered 2017-09-01 10:55:30 -07:00
xfs_trans_ail.c xfs: check kthread_should_stop() after the setting of task state 2017-10-26 15:38:22 -07:00
xfs_trans_bmap.c xfs: try to avoid blowing out the transaction reservation when bunmaping a shared extent 2017-06-19 08:59:10 -07:00
xfs_trans_buf.c xfs: disallow marking previously dirty buffers as ordered 2017-09-01 10:55:30 -07:00
xfs_trans_dquot.c
…
xfs_trans_extfree.c
…
xfs_trans_inode.c xfs: refactor xfs_trans_roll 2017-09-01 10:55:30 -07:00
xfs_trans_priv.h xfs: Properly retry failed inode items in case of error during buffer writeback 2017-08-22 09:22:23 -07:00
xfs_trans_refcount.c xfs: connect refcount adjust functions to upper layers 2016-10-03 09:11:22 -07:00
xfs_trans_rmap.c xfs: remove double-underscore integer types 2017-06-19 14:11:33 -07:00
xfs_xattr.c xfs: several xattr functions can be void 2016-12-05 12:32:14 +11:00