4.19-stable review patch. If anyone has any objections, please let me know.
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From: Sanjuán García, Jorge Jorge.SanjuanGarcia@duagon.com
commit 63ba2d07b4be72b94216d20561f43e1150b25d98 upstream.
chameleon_parse_gdd() may fail for different reasons and end up in the err tag. Make sure we at least always free the mcb_device allocated with mcb_alloc_dev().
If mcb_device_register() fails, make sure to give up the reference in the same place the device was added.
Fixes: 728ac3389296 ("mcb: mcb-parse: fix error handing in chameleon_parse_gdd()") Cc: stable stable@kernel.org Reviewed-by: Jose Javier Rodriguez Barbarin JoseJavier.Rodriguez@duagon.com Signed-off-by: Jorge Sanjuan Garcia jorge.sanjuangarcia@duagon.com Link: https://lore.kernel.org/r/20231019141434.57971-2-jorge.sanjuangarcia@duagon.... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/mcb/mcb-core.c | 1 + drivers/mcb/mcb-parse.c | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/mcb/mcb-core.c +++ b/drivers/mcb/mcb-core.c @@ -251,6 +251,7 @@ int mcb_device_register(struct mcb_bus * return 0;
out: + put_device(&dev->dev);
return ret; } --- a/drivers/mcb/mcb-parse.c +++ b/drivers/mcb/mcb-parse.c @@ -105,7 +105,7 @@ static int chameleon_parse_gdd(struct mc return 0;
err: - put_device(&mdev->dev); + mcb_free_dev(mdev);
return ret; }