ubifs: Fix memory leak from c->sup_node
The c->sup_node is allocated in function ubifs_read_sb_node but
is not freed. This will cause memory leak as below:
unreferenced object 0xbc9ce000 (size 4096):
comm "mount", pid 500, jiffies 4294952946 (age 315.820s)
hex dump (first 32 bytes):
31 18 10 06 06 7b f1 11 02 00 00 00 00 00 00 00 1....{..........
00 10 00 00 06 00 00 00 00 00 00 00 08 00 00 00 ................
backtrace:
[<d1c503cd>] ubifs_read_superblock+0x48/0xebc
[<a20e14bd>] ubifs_mount+0x974/0x1420
[<8589ecc3>] legacy_get_tree+0x2c/0x50
[<5f1fb889>] vfs_get_tree+0x28/0xfc
[<bbfc7939>] do_mount+0x4f8/0x748
[<4151f538>] ksys_mount+0x78/0xa0
[<d59910a9>] ret_fast_syscall+0x0/0x54
[<1cc40005>] 0x7ea02790
Free it in ubifs_umount and in the error path of mount_ubifs.
Fixes: fd6150051bec ("ubifs: Store read superblock node")
Signed-off-by: Quanyang Wang <quanyang.wang@windriver.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
1 file changed
