This is a note to let you know that I've just added the patch titled [PATCH stable 5.9 16/24] net/smc: fix valid DMBE buffer sizes to the 5.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: net-smc-fix-valid-dmbe-buffer-sizes.patch and it can be found in the queue-5.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From foo@baz Sat Oct 17 08:52:03 AM CEST 2020 From: Karsten Graul <kgraul@xxxxxxxxxxxxx> Date: Wed, 14 Oct 2020 19:43:28 +0200 Subject: [PATCH stable 5.9 16/24] net/smc: fix valid DMBE buffer sizes From: Karsten Graul <kgraul@xxxxxxxxxxxxx> [ Upstream commit ef12ad45880b696eb993d86c481ca891836ab593 ] The SMCD_DMBE_SIZES should include all valid DMBE buffer sizes, so the correct value is 6 which means 1MB. With 7 the registration of an ISM buffer would always fail because of the invalid size requested. Fix that and set the value to 6. Fixes: c6ba7c9ba43d ("net/smc: add base infrastructure for SMC-D and ISM") Signed-off-by: Karsten Graul <kgraul@xxxxxxxxxxxxx> Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/smc/smc_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/net/smc/smc_core.c +++ b/net/smc/smc_core.c @@ -1597,7 +1597,7 @@ out: return rc; } -#define SMCD_DMBE_SIZES 7 /* 0 -> 16KB, 1 -> 32KB, .. 6 -> 1MB */ +#define SMCD_DMBE_SIZES 6 /* 0 -> 16KB, 1 -> 32KB, .. 6 -> 1MB */ static struct smc_buf_desc *smcd_new_buf_create(struct smc_link_group *lgr, bool is_dmb, int bufsize) Patches currently in stable-queue which might be from kgraul@xxxxxxxxxxxxx are queue-5.9/net-smc-fix-valid-dmbe-buffer-sizes.patch queue-5.9/net-smc-fix-use-after-free-of-delayed-events.patch