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69f03f137a
linux_dsm_epyc7002/fs/btrfs
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Nikolay Borisov 69f03f137a btrfs: Prevent possible ERR_PTR() dereference 
In btrfs_full_stripe_len/btrfs_is_parity_mirror we have similar code which
gets the chunk map for a particular range via get_chunk_map. However,
get_chunk_map can return an ERR_PTR value and while the 2 callers do catch
this with a WARN_ON they then proceed to indiscriminately dereference the
extent map. This of course leads to a crash. Fix the offenders by making the
dereference conditional on IS_ERR.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2017-08-16 16:12:02 +02:00
..
tests btrfs: remove unused sectorsize member 2017-08-16 14:19:53 +02:00
acl.c btrfs: Don't clear SGID when inheriting ACLs 2017-06-29 20:24:59 +02:00
async-thread.c btrfs: constify tracepoint arguments 2017-08-16 14:19:53 +02:00
async-thread.h btrfs: constify tracepoint arguments 2017-08-16 14:19:53 +02:00
backref.c btrfs: clean up extraneous computations in add_delayed_refs 2017-08-16 16:12:01 +02:00
backref.h btrfs: backref, add tracepoints for prelim_ref insertion and merging 2017-08-16 16:12:01 +02:00
btrfs_inode.h btrfs: constify tracepoint arguments 2017-08-16 14:19:53 +02:00
check-integrity.c Merge branch 'for-4.13-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux 2017-07-05 16:41:23 -07:00
check-integrity.h btrfs: take an fs_info directly when the root is not used otherwise 2016-12-06 16:06:59 +01:00
compression.c Merge branch 'for-4.13-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux 2017-07-14 22:55:52 -07:00
compression.h Merge branch 'for-4.13-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux 2017-07-05 16:41:23 -07:00
ctree.c btrfs: adjust includes after vmalloc removal 2017-06-19 18:26:02 +02:00
ctree.h btrfs: struct-funcs, constify readers 2017-08-16 14:19:53 +02:00
dedupe.h btrfs: expand cow_file_range() to support in-band dedup and subpage-blocksize 2016-07-26 13:52:25 +02:00
delayed-inode.c btrfs: convert btrfs_delayed_item.refs from atomic_t to refcount_t 2017-04-18 14:07:23 +02:00
delayed-inode.h btrfs: convert btrfs_delayed_item.refs from atomic_t to refcount_t 2017-04-18 14:07:23 +02:00
delayed-ref.c Btrfs: return old and new total ref mods when adding delayed refs 2017-06-29 20:17:01 +02:00
delayed-ref.h Btrfs: return old and new total ref mods when adding delayed refs 2017-06-29 20:17:01 +02:00
dev-replace.c btrfs: fix integer overflow in calc_reclaim_items_nr 2017-06-29 20:17:02 +02:00
dev-replace.h btrfs: constify device path passed to relevant helpers 2017-02-28 14:26:07 +01:00
dir-item.c btrfs: fix validation of XATTR_ITEM dir items 2017-06-29 20:06:11 +02:00
disk-io.c Merge branch 'for-4.13-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux 2017-07-14 22:55:52 -07:00
disk-io.h Merge branch 'for-4.13-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux 2017-07-05 16:41:23 -07:00
export.c btrfs: Check name_len before reading btrfs_get_name 2017-06-21 19:16:04 +02:00
export.h
extent_io.c btrfs: btrfs_check_shared should manage its own transaction 2017-08-16 14:19:53 +02:00
extent_io.h btrfs: struct-funcs, constify readers 2017-08-16 14:19:53 +02:00
extent_map.c btrfs: convert extent_map.refs from atomic_t to refcount_t 2017-04-18 14:07:23 +02:00
extent_map.h btrfs: convert extent_map.refs from atomic_t to refcount_t 2017-04-18 14:07:23 +02:00
extent-tree.c btrfs: Remove redundant checks from btrfs_alloc_data_chunk_ondemand 2017-08-16 16:12:02 +02:00
file-item.c Merge branch 'for-4.13-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux 2017-07-05 16:41:23 -07:00
file.c Merge branch 'nowait-aio-btrfs-fixup' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux 2017-07-10 10:27:48 -07:00
free-space-cache.c btrfs: use clear_page where appropriate 2017-04-18 14:07:26 +02:00
free-space-cache.h btrfs: free-space-cache, clean up unnecessary root arguments 2017-02-17 12:03:56 +01:00
free-space-tree.c Btrfs: use memalloc_nofs and kvzalloc() for free space tree bitmaps 2017-06-19 18:26:01 +02:00
free-space-tree.h Btrfs: implement the free space B-tree 2015-12-17 12:16:47 -08:00
hash.c crypto: Work around deallocated stack frame reference gcc bug on sparc. 2017-06-08 17:36:03 +08:00
hash.h btrfs: advertise which crc32c implementation is being used at module load 2016-06-06 14:08:28 +02:00
inode-item.c btrfs: take an fs_info directly when the root is not used otherwise 2016-12-06 16:06:59 +01:00
inode-map.c btrfs: qgroup: Introduce extent changeset for qgroup reserve functions 2017-06-29 20:17:02 +02:00
inode-map.h Btrfs: Initialize btrfs_root->highest_objectid when loading tree root and subvolume roots 2016-01-15 19:25:02 +01:00
inode.c Merge branch 'for-4.13-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux 2017-07-14 22:55:52 -07:00
ioctl.c btrfs: fix integer overflow in calc_reclaim_items_nr 2017-06-29 20:17:02 +02:00
Kconfig
locking.c btrfs: cleanup, remove stray return statements 2016-01-07 14:30:52 +01:00
locking.h
lzo.c btrfs: switch to kvmalloc and GFP_KERNEL in lzo/zlib alloc_workspace 2017-06-19 18:26:02 +02:00
Makefile Btrfs: add free space tree sanity tests 2015-12-17 12:16:47 -08:00
math.h
ordered-data.c btrfs: fix integer overflow in calc_reclaim_items_nr 2017-06-29 20:17:02 +02:00
ordered-data.h btrfs: fix integer overflow in calc_reclaim_items_nr 2017-06-29 20:17:02 +02:00
orphan.c
print-tree.c Btrfs: let btrfs_print_leaf print more about block group 2017-06-19 18:26:00 +02:00
print-tree.h btrfs: take an fs_info directly when the root is not used otherwise 2016-12-06 16:06:59 +01:00
props.c btrfs: Verify dir_item in iterate_object_props 2017-06-21 19:16:04 +02:00
props.h
qgroup.c btrfs: fix integer overflow in calc_reclaim_items_nr 2017-06-29 20:17:02 +02:00
qgroup.h btrfs: qgroup: Fix qgroup reserved space underflow by only freeing reserved ranges 2017-06-29 20:17:02 +02:00
raid56.c Merge branch 'for-4.13-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux 2017-07-14 22:55:52 -07:00
raid56.h btrfs: take an fs_info directly when the root is not used otherwise 2016-12-06 16:06:59 +01:00
rcu-string.h
reada.c btrfs: remove unused member err from reada_extent 2017-06-19 18:25:59 +02:00
relocation.c btrfs: fix integer overflow in calc_reclaim_items_nr 2017-06-29 20:17:02 +02:00
root-tree.c btrfs: Check name_len before in btrfs_del_root_ref 2017-06-21 19:16:04 +02:00
scrub.c Merge branch 'for-4.13-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux 2017-07-05 16:41:23 -07:00
send.c Btrfs: incremental send, fix invalid memory access 2017-07-06 23:02:30 +01:00
send.h Btrfs: use linux/sizes.h to represent constants 2016-01-07 14:38:02 +01:00
struct-funcs.c btrfs: struct-funcs, constify readers 2017-08-16 14:19:53 +02:00
super.c btrfs: resume qgroup rescan on rw remount 2017-08-16 16:12:01 +02:00
sysfs.c btrfs: Add quota_override knob into sysfs 2017-06-19 18:25:58 +02:00
sysfs.h btrfs: sysfs: introduce helper for syncing bits with sysfs files 2016-01-21 18:50:40 +01:00
transaction.c btrfs: fix integer overflow in calc_reclaim_items_nr 2017-06-29 20:17:02 +02:00
transaction.h btrfs: remove unused qgroup members from btrfs_trans_handle 2017-04-18 14:07:25 +02:00
tree-defrag.c Btrfs: fix locking bugs when defragging leaves 2015-12-18 02:51:32 +00:00
tree-log.c Btrfs: fix dir item validation when replaying xattr deletes 2017-07-19 20:38:16 +02:00
tree-log.h btrfs: Make btrfs_del_inode_ref take btrfs_inode 2017-02-14 15:50:54 +01:00
ulist.c btrfs: ulist: rename ulist_fini to ulist_release 2017-02-17 12:03:50 +01:00
ulist.h btrfs: ulist: rename ulist_fini to ulist_release 2017-02-17 12:03:50 +01:00
uuid-tree.c btrfs: return the actual error value from from btrfs_uuid_tree_iterate 2016-12-19 18:08:15 +01:00
volumes.c btrfs: Prevent possible ERR_PTR() dereference 2017-08-16 16:12:02 +02:00
volumes.h btrfs: preallocate device flush bio 2017-06-21 19:03:38 +02:00
xattr.c btrfs: Check name_len with boundary in verify dir_item 2017-06-21 19:16:04 +02:00
xattr.h btrfs: Switch to generic xattr handlers 2016-05-17 19:17:09 -04:00
zlib.c btrfs: switch to kvmalloc and GFP_KERNEL in lzo/zlib alloc_workspace 2017-06-19 18:26:02 +02:00