From: Namjae Jeon <[email protected]> Fix potential null pointer dereferencing problem caused by e43bb4e612 ("ext4: decrement free clusters/inodes counters when block group declared bad")
Reported-by: Dan Carpenter <[email protected]> Signed-off-by: Namjae Jeon <[email protected]> Signed-off-by: Ashish Sangwan <[email protected]> Signed-off-by: Theodore Ts'o <[email protected]> Reviewed-by: Lukas Czerner <[email protected]> Signed-off-by: sam-the-6 <[email protected]> --- fs/ext4/ialloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index 0840bf3..5b87fc3 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -338,7 +338,7 @@ out: fatal = err; } else { ext4_error(sb, "bit already cleared for inode %lu", ino); - if (!EXT4_MB_GRP_IBITMAP_CORRUPT(grp)) { + if (gdp && !EXT4_MB_GRP_IBITMAP_CORRUPT(grp)) { int count; count = ext4_free_inodes_count(sb, gdp); percpu_counter_sub(&sbi->s_freeinodes_counter, -- 1.7.10.4 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
