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Hou Tao ca1704f177 ubi: fastmap: Free unused fastmap anchor peb during detach 
[ Upstream commit c16f39d14a7e0ec59881fbdb22ae494907534384 ]

When CONFIG_MTD_UBI_FASTMAP is enabled, fm_anchor will be assigned
a free PEB during ubi_wl_init() or ubi_update_fastmap(). However
if fastmap is not used or disabled on the MTD device, ubi_wl_entry
related with the PEB will not be freed during detach.

So Fix it by freeing the unused fastmap anchor during detach.

Fixes: f9c34bb52997 ("ubi: Fix producing anchor PEBs")
Reported-by: syzbot+f317896aae32eb281a58@syzkaller.appspotmail.com
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-10-01 13:18:11 +02:00
..
chips
mtd: cfi_cmdset_0002: don't free cfi->cfiq in error path of cfi_amdstd_setup()
2020-10-01 13:17:16 +02:00
devices
mtd: phram: fix a double free issue in error path
2020-04-23 10:36:45 +02:00
hyperbus
mtd: hyperbus: fix dependency and build error
2019-08-29 14:31:23 +02:00
lpddr
mtd: lpddr: Fix a double free in probe()
2020-04-23 10:36:45 +02:00
maps
mtd: pismo: Simplify getting the adapter of a client
2019-09-15 23:50:39 +02:00
nand
mtd: rawnand: omap_elm: Fix runtime PM imbalance on error
2020-10-01 13:18:07 +02:00
parsers
mtd: parser: cmdline: Support MTD names containing one or more colons
2020-10-01 13:18:08 +02:00
spi-nor
mtd: spi-nor: Split mt25qu512a (n25q512a) entry into two
2020-02-11 04:35:45 -08:00
tests
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 326
2019-06-05 17:37:06 +02:00
ubi
ubi: fastmap: Free unused fastmap anchor peb during detach
2020-10-01 13:18:11 +02:00
ftl.c
…
inftlcore.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
inftlmount.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
Kconfig
mtd: parsers: Move CMDLINE parser
2019-09-15 23:50:50 +02:00
Makefile
mtd: parsers: Move CMDLINE parser
2019-09-15 23:50:50 +02:00
mtd_blkdevs.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 102
2019-05-24 17:39:00 +02:00
mtdblock_ro.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 102
2019-05-24 17:39:00 +02:00
mtdblock.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 102
2019-05-24 17:39:00 +02:00
mtdchar.c
mtd: properly check all write ioctls for permissions
2020-08-11 15:33:35 +02:00
mtdconcat.c
mtd: concat: implement _is_locked mtd operation
2019-07-07 20:39:16 +02:00
mtdcore.c
mtd: Fix mtd not registered due to nvmem name collision
2020-05-27 17:46:22 +02:00
mtdcore.h
mtd: Provide fs_context-aware mount_mtd() replacement
2019-09-05 14:34:23 -04:00
mtdoops.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 336
2019-06-05 17:37:07 +02:00
mtdpart.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 102
2019-05-24 17:39:00 +02:00
mtdsuper.c
mtd: Kill mount_mtd()
2019-09-05 14:34:26 -04:00
mtdswap.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 336
2019-06-05 17:37:07 +02:00
nftlcore.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
nftlmount.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
rfd_ftl.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
sm_ftl.c
mtd: sm_ftl: Fix memory leak in sm_init_zone() error path
2019-09-15 23:50:50 +02:00
sm_ftl.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
ssfdc.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00