On Sat, Mar 07, 2020 at 12:06:02AM +0100, mwilck@xxxxxxxx wrote: > From: Martin Wilck <mwilck@xxxxxxxx> > > Some targets (notably the qemu-pr-helper) don't support PERSISTENT > RESERVE IN commands with more than 8192 bytes allocation length. > While I have found no explicit requirement in the SCSI specs that > the allocation lengh may not exceed 8k, an 8k limit is also enforced > by sg_persist(8), and actually by mpathpersist itself for the > --allocation-length option, but not for the auto-determined length. > > Fix that. > Reviewed-by: Benjamin Marzinski <bmarzins@xxxxxxxxxx> > Signed-off-by: Martin Wilck <mwilck@xxxxxxxx> > --- > libmpathpersist/mpath_pr_ioctl.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/libmpathpersist/mpath_pr_ioctl.c b/libmpathpersist/mpath_pr_ioctl.c > index 74b26b0c..1a28cba7 100644 > --- a/libmpathpersist/mpath_pr_ioctl.c > +++ b/libmpathpersist/mpath_pr_ioctl.c > @@ -543,5 +543,7 @@ int get_prin_length(int rq_servact) > mx_resp_len = 0; > break; > } > + if (mx_resp_len > MPATH_MAX_PARAM_LEN) > + mx_resp_len = MPATH_MAX_PARAM_LEN; > return mx_resp_len; > } > -- > 2.25.1 -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
