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net: convert fib_treeref from int to refcount_t

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refcount_t type should be used instead of int when fib_treeref is used as
a reference counter,and avoid use-after-free risks.

Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20210729071350.28919-1-yajun.deng@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Yajun Deng
2021-07-30 15:33:24 +02:00
committed by Jakub Kicinski
parent 3e12361b6d
commit 79976892f7
4 changed files with 9 additions and 9 deletions
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include/net/dn_fib.h
+1 -1
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@@ -29,7 +29,7 @@ struct dn_fib_nh {
struct dn_fib_info {
struct dn_fib_info *fib_next;
struct dn_fib_info *fib_prev;
int fib_treeref;
refcount_t fib_treeref;
refcount_t fib_clntref;
int fib_dead;
unsigned int fib_flags;
include/net/ip_fib.h
+1 -1
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@@ -133,7 +133,7 @@ struct fib_info {
struct hlist_node fib_lhash;
struct list_head nh_list;
struct net *fib_net;
int fib_treeref;
refcount_t fib_treeref;
refcount_t fib_clntref;
unsigned int fib_flags;
unsigned char fib_dead;