Hi,
On 07/20/2018 01:20 AM, Jes Sorensen wrote:
On 07/18/2018 09:40 PM, Guoqing Jiang wrote:
We can see "double free or corruption" with below steps
as reported by Mariusz:
export IMSM_NO_PLATFORM=1
export IMSM_DEVNAME_AS_SERIAL=1
mdadm --zero-super /dev/sd*
mdadm -C /dev/md/imsm -n2 -eimsm /dev/sdb /dev/sdc --run
mdadm -C /dev/md/r1 -n2 -z15G -eimsm /dev/sdb /dev/sdc -l1 --run --assume-clean
mdadm -f /dev/md126 /dev/sdb
mdadm -Ss
It is caused by Manage_stop calls map_remove and map_unlock,
but *mapp is not set to NULL after map_remove -> map_free,
so map_unlock will call map_free again.
Reported-by: Tkaczyk Mariusz <mariusz.tkaczyk@xxxxxxxxx>
Tested-by: Tkaczyk Mariusz <mariusz.tkaczyk@xxxxxxxxx>
Signed-off-by: Guoqing Jiang <gqjiang@xxxxxxxx>
Applied!
Anything else we need to get in before we start thinking about freezing 4.1?
I have another patch which will be post soon, then nothing more from my
side so far.
Thanks,
Guoqing
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