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ubi: Check the presence of volume before call ubi_fastmap_destroy_checkmap()

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Else there may be oops when fastmap is enabled and init_volumes() fails.

Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Hou Tao 2019-11-30 17:48:00 +08:00 committed by Richard Weinberger
parent 219b0e2cba
commit 9d6c4742f9
1 changed files with 2 additions and 0 deletions
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2
drivers/mtd/ubi/vtbl.c
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@ -852,6 +852,8 @@ int ubi_read_volume_table(struct ubi_device *ubi, struct ubi_attach_info *ai)
out_free:
vfree(ubi->vtbl);
for (i = 0; i < ubi->vtbl_slots + UBI_INT_VOL_COUNT; i++) {
if (!ubi->volumes[i])
continue;
ubi_fastmap_destroy_checkmap(ubi->volumes[i]);
kfree(ubi->volumes[i]);
ubi->volumes[i] = NULL;