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authorKarsten Graul <kgraul@linux.ibm.com>2020-10-14 19:43:29 +0200
committerJakub Kicinski <kuba@kernel.org>2020-10-15 18:54:43 +0200
commit6b1bbf94ab369d97ed3bdaa561521a52c27ef619 (patch)
tree71b0f3f664252ab57d21661c989a399fc8889193 /net/smc
parentnet/smc: fix valid DMBE buffer sizes (diff)
downloadlinux-6b1bbf94ab369d97ed3bdaa561521a52c27ef619.tar.xz
linux-6b1bbf94ab369d97ed3bdaa561521a52c27ef619.zip
net/smc: fix invalid return code in smcd_new_buf_create()
smc_ism_register_dmb() returns error codes set by the ISM driver which are not guaranteed to be negative or in the errno range. Such values would not be handled by ERR_PTR() and finally the return code will be used as a memory address. Fix that by using a valid negative errno value with ERR_PTR(). Fixes: 72b7f6c48708 ("net/smc: unique reason code for exceeded max dmb count") Signed-off-by: Karsten Graul <kgraul@linux.ibm.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/smc')
-rw-r--r--net/smc/smc_core.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c
index 7c0e4fac9748..59cc99fec2a2 100644
--- a/net/smc/smc_core.c
+++ b/net/smc/smc_core.c
@@ -1616,7 +1616,8 @@ static struct smc_buf_desc *smcd_new_buf_create(struct smc_link_group *lgr,
rc = smc_ism_register_dmb(lgr, bufsize, buf_desc);
if (rc) {
kfree(buf_desc);
- return (rc == -ENOMEM) ? ERR_PTR(-EAGAIN) : ERR_PTR(rc);
+ return (rc == -ENOMEM) ? ERR_PTR(-EAGAIN) :
+ ERR_PTR(-EIO);
}
buf_desc->pages = virt_to_page(buf_desc->cpu_addr);
/* CDC header stored in buf. So, pretend it was smaller */