[PATCH] IB: fix potential ib_umad leak

Free all unclaimed MAD receive buffers when userspace closes our file so we
don't leak memory.

Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
index 56b9c2fa2ecc..9d912d6877ff 100644
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -499,6 +499,7 @@ static int ib_umad_open(struct inode *inode, struct file *filp)
 static int ib_umad_close(struct inode *inode, struct file *filp)
 {
 	struct ib_umad_file *file = filp->private_data;
+	struct ib_umad_packet *packet, *tmp;
 	int i;
 
 	for (i = 0; i < IB_UMAD_MAX_AGENTS; ++i)
@@ -507,6 +508,9 @@ static int ib_umad_close(struct inode *inode, struct file *filp)
 			ib_unregister_mad_agent(file->agent[i]);
 		}
 
+	list_for_each_entry_safe(packet, tmp, &file->recv_list, list)
+		kfree(packet);
+
 	kfree(file);
 
 	return 0;

path: root/drivers/infiniband

# SPDX-License-Identifier: GPL-2.0+

dtb-$(CONFIG_TARGET_MPC8548CDS) += mpc8548cds.dtb mpc8548cds_36b.dtb
dtb-$(CONFIG_TARGET_P1020RDB_PC) += p1020rdb-pc.dtb p1020rdb-pc_36b.dtb
dtb-$(CONFIG_TARGET_P1020RDB_PD) += p1020rdb-pd.dtb
dtb-$(CONFIG_TARGET_P2020RDB) += p2020rdb-pc.dtb p2020rdb-pc_36b.dtb
dtb-$(CONFIG_TARGET_P2041RDB) += p2041rdb.dtb
dtb-$(CONFIG_TARGET_P3041DS) += p3041ds.dtb
dtb-$(CONFIG_TARGET_P4080DS) += p4080ds.dtb
dtb-$(CONFIG_TARGET_P5040DS) += p5040ds.dtb
dtb-$(CONFIG_TARGET_T1024RDB) += t1024rdb.dtb
dtb-$(CONFIG_TARGET_T1042D4RDB) += t1042d4rdb.dtb
dtb-$(CONFIG_TARGET_T2080QDS) += t2080qds.dtb
dtb-$(CONFIG_TARGET_T2080RDB) += t2080rdb.dtb
dtb-$(CONFIG_TARGET_T4240RDB) += t4240rdb.dtb
dtb-$(CONFIG_TARGET_MCR3000) += mcr3000.dtb
dtb-$(CONFIG_TARGET_GAZERBEAM) += gazerbeam.dtb

targets += $(dtb-y)

# Add any required device tree compiler flags here
DTC_FLAGS +=

PHONY += dtbs
dtbs: $(addprefix $(obj)/, $(dtb-y))
	@:

clean-files := *.dtb