Some false positive warnings are reported for powerpc build. The following warnings are reported in http://kisskb.ellerman.id.au/kisskb/buildresult/12519703/ CC fs/nilfs2/super.o fs/nilfs2/super.c: In function 'nilfs_resize_fs': fs/nilfs2/super.c:376:2: warning: 'blocknr' may be used uninitialized in this function [-Wuninitialized] fs/nilfs2/super.c:362:11: note: 'blocknr' was declared here CC fs/nilfs2/recovery.o fs/nilfs2/recovery.c: In function 'nilfs_salvage_orphan_logs': fs/nilfs2/recovery.c:631:21: warning: 'sum' may be used uninitialized in this function [-Wuninitialized] fs/nilfs2/recovery.c:585:32: note: 'sum' was declared here fs/nilfs2/recovery.c: In function 'nilfs_search_super_root': fs/nilfs2/recovery.c:873:11: warning: 'sum' may be used uninitialized in this function [-Wuninitialized] Another similar warning is reported in http://kisskb.ellerman.id.au/kisskb/buildresult/12520079/ CC fs/nilfs2/btree.o fs/nilfs2/btree.c: In function 'nilfs_btree_convert_and_insert': include/asm-generic/bitops/non-atomic.h:105:20: warning: 'bh' may be used uninitialized in this function [-Wuninitialized] fs/nilfs2/btree.c:1859:22: note: 'bh' was declared here This cleans out these warnings by forcing the variables to be initialized. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@xxxxxxxxxxxxx> Reported-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> --- fs/nilfs2/btree.c | 2 +- fs/nilfs2/recovery.c | 4 ++-- fs/nilfs2/super.c | 5 ++++- 3 files changed, 7 insertions(+), 4 deletions(-) diff --git a/fs/nilfs2/btree.c b/fs/nilfs2/btree.c index f609a85..3a3821b 100644 --- a/fs/nilfs2/btree.c +++ b/fs/nilfs2/btree.c @@ -1851,7 +1851,7 @@ int nilfs_btree_convert_and_insert(struct nilfs_bmap *btree, __u64 key, __u64 ptr, const __u64 *keys, const __u64 *ptrs, int n) { - struct buffer_head *bh; + struct buffer_head *bh = NULL; union nilfs_bmap_ptr_req dreq, nreq, *di, *ni; struct nilfs_bmap_stats stats; int ret; diff --git a/fs/nilfs2/recovery.c b/fs/nilfs2/recovery.c index ff00a0b..9b4f205 100644 --- a/fs/nilfs2/recovery.c +++ b/fs/nilfs2/recovery.c @@ -582,7 +582,7 @@ static int nilfs_do_roll_forward(struct the_nilfs *nilfs, struct nilfs_recovery_info *ri) { struct buffer_head *bh_sum = NULL; - struct nilfs_segment_summary *sum; + struct nilfs_segment_summary *sum = NULL; sector_t pseg_start; sector_t seg_start, seg_end; /* Starting/ending DBN of full segment */ unsigned long nsalvaged_blocks = 0; @@ -814,7 +814,7 @@ int nilfs_search_super_root(struct the_nilfs *nilfs, struct nilfs_recovery_info *ri) { struct buffer_head *bh_sum = NULL; - struct nilfs_segment_summary *sum; + struct nilfs_segment_summary *sum = NULL; sector_t pseg_start, pseg_end, sr_pseg_start = 0; sector_t seg_start, seg_end; /* range of full segment (block number) */ sector_t b, end; diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c index f47585b..c6b5008 100644 --- a/fs/nilfs2/super.c +++ b/fs/nilfs2/super.c @@ -361,7 +361,7 @@ static int nilfs_move_2nd_super(struct super_block *sb, loff_t sb2off) struct nilfs_super_block *nsbp; sector_t blocknr, newblocknr; unsigned long offset; - int sb2i = -1; /* array index of the secondary superblock */ + int sb2i; /* array index of the secondary superblock */ int ret = 0; /* nilfs->ns_sem must be locked by the caller. */ @@ -372,6 +372,9 @@ static int nilfs_move_2nd_super(struct super_block *sb, loff_t sb2off) } else if (nilfs->ns_sbh[0]->b_blocknr > nilfs->ns_first_data_block) { sb2i = 0; blocknr = nilfs->ns_sbh[0]->b_blocknr; + } else { + sb2i = -1; + blocknr = 0; } if (sb2i >= 0 && (u64)blocknr << nilfs->ns_blocksize_bits == sb2off) goto out; /* super block location is unchanged */ -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-nilfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
