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Jia-Ju Bai afa1d96d14 xfs: Fix possible null-pointer dereferences in xchk_da_btree_block_check_sibling() 
In xchk_da_btree_block_check_sibling(), there is an if statement on
line 274 to check whether ds->state->altpath.blk[level].bp is NULL:
    if (ds->state->altpath.blk[level].bp)

When ds->state->altpath.blk[level].bp is NULL, it is used on line 281:
    xfs_trans_brelse(..., ds->state->altpath.blk[level].bp);
        struct xfs_buf_log_item *bip = bp->b_log_item;
        ASSERT(bp->b_transp == tp);

Thus, possible null-pointer dereferences may occur.

To fix these bugs, ds->state->altpath.blk[level].bp is checked before
being used.

These bugs are found by a static analysis tool STCheck written by us.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-07-30 11:28:20 -07:00
..
libxfs
xfs: sync up xfs_trans_inode with userspace
2019-07-15 08:10:34 -07:00
scrub
xfs: Fix possible null-pointer dereferences in xchk_da_btree_block_check_sibling()
2019-07-30 11:28:20 -07:00
Kconfig
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
kmem.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
kmem.h
xfs: make mem_to_page available outside of xfs_buf.c
2019-06-28 19:27:19 -07:00
Makefile
xfs: move xfs_trans_inode.c to libxfs/
2019-07-15 08:10:18 -07:00
mrlock.h
xfs: convert to SPDX license tags
2018-06-06 14:17:53 -07:00
xfs_acl.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_acl.h
xfs: convert to SPDX license tags
2018-06-06 14:17:53 -07:00
xfs_aops.c
for-linus-20190715
2019-07-15 21:20:52 -07:00
xfs_aops.h
xfs: remove the unused xfs_count_page_state declaration
2019-06-30 09:05:17 -07:00
xfs_attr_inactive.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_attr_list.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_bio_io.c
xfs: chain bios the right way around in xfs_rw_bdev
2019-07-10 10:04:16 -07:00
xfs_bmap_item.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_bmap_item.h
xfs: merge xfs_bud_init into xfs_trans_get_bud
2019-06-28 19:27:36 -07:00
xfs_bmap_util.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_bmap_util.h
xfs: flush removing page cache in xfs_reflink_remap_prep
2018-11-21 10:10:53 -08:00
xfs_buf_item.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_buf_item.h
xfs: remove the xfs_log_item_t typedef
2019-06-28 19:27:33 -07:00
xfs_buf.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_buf.h
xfs: add struct xfs_mount pointer to struct xfs_buf
2019-06-28 19:27:29 -07:00
xfs_dir2_readdir.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_discard.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_discard.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
xfs_dquot_item.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_dquot_item.h
xfs: remove the xfs_log_item_t typedef
2019-06-28 19:27:33 -07:00
xfs_dquot.c
xfs: create iterator error codes
2019-07-02 09:40:05 -07:00
xfs_dquot.h
xfs: remove the debug-only q_transp field from struct xfs_dquot
2019-06-12 08:59:59 -07:00
xfs_error.c
xfs: add struct xfs_mount pointer to struct xfs_buf
2019-06-28 19:27:29 -07:00
xfs_error.h
xfs: Introduce XFS_PTAG_VERIFIER_ERROR panic mask
2019-02-11 16:07:00 -08:00
xfs_export.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_export.h
xfs: convert to SPDX license tags
2018-06-06 14:17:53 -07:00
xfs_extent_busy.c
xfs: convert to SPDX license tags
2018-06-06 14:17:53 -07:00
xfs_extent_busy.h
xfs: convert to SPDX license tags
2018-06-06 14:17:53 -07:00
xfs_extfree_item.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_extfree_item.h
xfs: merge xfs_efd_init into xfs_trans_get_efd
2019-06-28 19:27:35 -07:00
xfs_file.c
- virtio_pmem: The new virtio_pmem facility introduces a paravirtualized
2019-07-18 10:52:08 -07:00
xfs_filestream.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_filestream.h
xfs: convert to SPDX license tags
2018-06-06 14:17:53 -07:00
xfs_fsmap.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_fsmap.h
xfs: convert to SPDX license tags
2018-06-06 14:17:53 -07:00
xfs_fsops.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_fsops.h
xfs: change some error-less functions to void types
2019-05-01 20:26:30 -07:00
xfs_globals.c
xfs: multithreaded iwalk implementation
2019-07-03 07:33:26 -07:00
xfs_health.c
xfs: introduce new v5 bulkstat structure
2019-07-03 20:36:26 -07:00
xfs_icache.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_icache.h
xfs: rename the speculative block allocation reclaim toggle functions
2019-04-26 12:28:55 -07:00
xfs_icreate_item.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_icreate_item.h
xfs: convert to SPDX license tags
2018-06-06 14:17:53 -07:00
xfs_inode_item.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_inode_item.h
xfs: remove the xfs_log_item_t typedef
2019-06-28 19:27:33 -07:00
xfs_inode.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_inode.h
xfs: widen inode delalloc block counter to 64-bits
2019-04-23 08:36:23 -07:00
xfs_ioctl32.c
xfs: wire up the v5 inumbers ioctl
2019-07-03 20:36:28 -07:00
xfs_ioctl32.h
xfs: remove various bulk request typedef usage
2019-07-03 20:36:25 -07:00
xfs_ioctl.c
New stuff for 5.3:
2019-07-12 17:17:51 -07:00
xfs_ioctl.h
xfs: introduce v5 inode group structure
2019-07-03 20:36:27 -07:00
xfs_iomap.c
xfs: remove XFS_TRANS_NOFS
2019-06-30 09:05:17 -07:00
xfs_iomap.h
xfs: fix SEEK_DATA for speculative COW fork preallocation
2019-02-21 07:55:07 -08:00
xfs_iops.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_iops.h
xfs: convert to SPDX license tags
2018-06-06 14:17:53 -07:00
xfs_itable.c
xfs: fix stack contents leakage in the v1 inumber ioctls
2019-07-28 21:12:32 -07:00
xfs_itable.h
xfs: specify AG in bulk req
2019-07-04 07:52:23 -07:00
xfs_iwalk.c
xfs: specify AG in bulk req
2019-07-04 07:52:23 -07:00
xfs_iwalk.h
xfs: specify AG in bulk req
2019-07-04 07:52:23 -07:00
xfs_linux.h
xfs: use bios directly to read and write the log recovery buffers
2019-06-28 19:27:26 -07:00
xfs_log_cil.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_log_priv.h
fs: xfs: xfs_log: Change return type from int to void
2019-07-03 08:21:58 -07:00
xfs_log_recover.c
fs: xfs: xfs_log: Change return type from int to void
2019-07-03 08:21:58 -07:00
xfs_log.c
fs: xfs: xfs_log: Change return type from int to void
2019-07-03 08:21:58 -07:00
xfs_log.h
fs: xfs: xfs_log: Change return type from int to void
2019-07-03 08:21:58 -07:00
xfs_message.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_message.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
xfs_mount.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_mount.h
xfs: move the log ioend workqueue to struct xlog
2019-06-28 19:27:25 -07:00
xfs_mru_cache.c
xfs: convert to SPDX license tags
2018-06-06 14:17:53 -07:00
xfs_mru_cache.h
xfs: convert to SPDX license tags
2018-06-06 14:17:53 -07:00
xfs_ondisk.h
xfs: wire up the v5 inumbers ioctl
2019-07-03 20:36:28 -07:00
xfs_pnfs.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_pnfs.h
xfs: prepare xfs_break_layouts() for another layout type
2018-05-22 07:19:08 -07:00
xfs_pwork.c
xfs: poll waiting for quotacheck
2019-07-03 08:21:58 -07:00
xfs_pwork.h
xfs: poll waiting for quotacheck
2019-07-03 08:21:58 -07:00
xfs_qm_bhv.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_qm_syscalls.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_qm.c
xfs: specify AG in bulk req
2019-07-04 07:52:23 -07:00
xfs_qm.h
xfs: widen quota block counters to 64-bit integers
2019-04-23 08:36:23 -07:00
xfs_quota.h
xfs: kill the xfs_dqtrx_t typedef
2019-04-23 08:36:23 -07:00
xfs_quotaops.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_refcount_item.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_refcount_item.h
xfs: merge xfs_cud_init into xfs_trans_get_cud
2019-06-28 19:27:35 -07:00
xfs_reflink.c
xfs: remove XFS_TRANS_NOFS
2019-06-30 09:05:17 -07:00
xfs_reflink.h
xfs: don't pass iomap flags to xfs_reflink_allocate_cow
2019-02-25 09:04:31 -08:00
xfs_rmap_item.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_rmap_item.h
xfs: merge xfs_rud_init into xfs_trans_get_rud
2019-06-28 19:27:36 -07:00
xfs_rtalloc.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_rtalloc.h
xfs: convert to SPDX license tags
2018-06-06 14:17:53 -07:00
xfs_stats.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_stats.h
xfs: use offsetof() in place of offset macros for __xfsstats
2018-10-18 17:21:39 +11:00
xfs_super.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_super.h
xfs: include WARN, REPAIR build options in XFS_BUILD_OPTIONS
2019-06-12 08:37:40 -07:00
xfs_symlink.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_symlink.h
xfs: convert to SPDX license tags
2018-06-06 14:17:53 -07:00
xfs_sysctl.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_sysctl.h
xfs: multithreaded iwalk implementation
2019-07-03 07:33:26 -07:00
xfs_sysfs.c
xfs: multithreaded iwalk implementation
2019-07-03 07:33:26 -07:00
xfs_sysfs.h
xfs: convert to SPDX license tags
2018-06-06 14:17:53 -07:00
xfs_trace.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_trace.h
xfs: multithreaded iwalk implementation
2019-07-03 07:33:26 -07:00
xfs_trans_ail.c
xfs: remove the xfs_log_item_t typedef
2019-06-28 19:27:33 -07:00
xfs_trans_buf.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_trans_dquot.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs_trans_priv.h
xfs: don't use xfs_trans_free_items in the commit path
2019-06-28 19:27:31 -07:00
xfs_trans.c
xfs: remove XFS_TRANS_NOFS
2019-06-30 09:05:17 -07:00
xfs_trans.h
xfs: merge xfs_trans_bmap.c into xfs_bmap_item.c
2019-06-28 19:29:42 -07:00
xfs_xattr.c
xfs: remove unused header files
2019-06-28 19:30:43 -07:00
xfs.h
xfs: remove b_last_holder & associated macros
2018-08-12 08:37:31 -07:00