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ext4: mark block bitmap corrupted when found instead of BUGON 

[ Upstream commit eb5760863fc28feab28b567ddcda7e667e638da0 ]

We already has similar code in ext4_mb_complex_scan_group(), but
ext4_mb_simple_scan_group() still affected.

Other reports: https://www.spinics.net/lists/linux-ext4/msg60231.html

Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Dmitry Monakhov <dmonakhov@gmail.com>
Link: https://lore.kernel.org/r/20200310150156.641-1-dmonakhov@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>
zero-colors
Dmitry Monakhov 2020-03-10 15:01:56 +00:00 committed by Greg Kroah-Hartman
parent 152875a0f0
commit be4ff3a49c
1 changed files with 9 additions and 2 deletions
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11
fs/ext4/mballoc.c
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@ -1901,8 +1901,15 @@ void ext4_mb_simple_scan_group(struct ext4_allocation_context *ac,
BUG_ON(buddy == NULL);
k = mb_find_next_zero_bit(buddy, max, 0);
BUG_ON(k >= max);
if (k >= max) {
ext4_grp_locked_error(ac->ac_sb, e4b->bd_group, 0, 0,
"%d free clusters of order %d. But found 0",
grp->bb_counters[i], i);
ext4_mark_group_bitmap_corrupted(ac->ac_sb,
e4b->bd_group,
EXT4_GROUP_INFO_BBITMAP_CORRUPT);
break;
}
ac->ac_found++;
ac->ac_b_ex.fe_len = 1 << i;