2021-07-10 07:11:30

by Pavel Skripkin

Subject: [PATCH 2/2] net: cipso: fix memory leak in cipso_v4_doi_free

When doi_def->type == CIPSO_V4_MAP_TRANS doi_def->map.std should
be freed to avoid memory leak.

Fail log:

BUG: memory leak
unreferenced object 0xffff88801b936d00 (size 64):
comm "a.out", pid 8478, jiffies 4295042353 (age 15.260s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 15 b8 12 26 00 00 00 00 00 00 00 00 .......&........
backtrace:
netlbl_cipsov4_add (net/netlabel/netlabel_cipso_v4.c:145 net/netlabel/netlabel_cipso_v4.c:416)
genl_family_rcv_msg_doit (net/netlink/genetlink.c:741)
genl_rcv_msg (net/netlink/genetlink.c:783 net/netlink/genetlink.c:800)
netlink_rcv_skb (net/netlink/af_netlink.c:2505)
genl_rcv (net/netlink/genetlink.c:813)

Fixes: b1edeb102397 ("netlabel: Replace protocol/NetLabel linking with refrerence
counts")
Signed-off-by: Pavel Skripkin <[email protected]>
---
net/ipv4/cipso_ipv4.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c
index bfaf327e9d12..e0480c6cebaa 100644
--- a/net/ipv4/cipso_ipv4.c
+++ b/net/ipv4/cipso_ipv4.c
@@ -472,6 +472,7 @@ void cipso_v4_doi_free(struct cipso_v4_doi *doi_def)
kfree(doi_def->map.std->lvl.local);
kfree(doi_def->map.std->cat.cipso);
kfree(doi_def->map.std->cat.local);
+ kfree(doi_def->map.std);
break;
}
kfree(doi_def);
--
2.32.0

2021-07-10 07:37:22

by Dongliang Mu

Subject: Re: [PATCH 2/2] net: cipso: fix memory leak in cipso_v4_doi_free

On Sat, Jul 10, 2021 at 3:10 PM Pavel Skripkin <[email protected]> wrote:
>
> When doi_def->type == CIPSO_V4_MAP_TRANS doi_def->map.std should
> be freed to avoid memory leak.
>
> Fail log:
>
> BUG: memory leak
> unreferenced object 0xffff88801b936d00 (size 64):
> comm "a.out", pid 8478, jiffies 4295042353 (age 15.260s)
> hex dump (first 32 bytes):
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> 00 00 00 00 15 b8 12 26 00 00 00 00 00 00 00 00 .......&........
> backtrace:
> netlbl_cipsov4_add (net/netlabel/netlabel_cipso_v4.c:145 net/netlabel/netlabel_cipso_v4.c:416)
> genl_family_rcv_msg_doit (net/netlink/genetlink.c:741)
> genl_rcv_msg (net/netlink/genetlink.c:783 net/netlink/genetlink.c:800)
> netlink_rcv_skb (net/netlink/af_netlink.c:2505)
> genl_rcv (net/netlink/genetlink.c:813)
>
> Fixes: b1edeb102397 ("netlabel: Replace protocol/NetLabel linking with refrerence
> counts")
> Signed-off-by: Pavel Skripkin <[email protected]>
> ---
> net/ipv4/cipso_ipv4.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c
> index bfaf327e9d12..e0480c6cebaa 100644
> --- a/net/ipv4/cipso_ipv4.c
> +++ b/net/ipv4/cipso_ipv4.c
> @@ -472,6 +472,7 @@ void cipso_v4_doi_free(struct cipso_v4_doi *doi_def)
> kfree(doi_def->map.std->lvl.local);
> kfree(doi_def->map.std->cat.cipso);
> kfree(doi_def->map.std->cat.local);
> + kfree(doi_def->map.std);
> break;
> }
> kfree(doi_def);
> --

Hi Paval,

this patch is already merged by Paul. See [1] for more details.

[1] https://lore.kernel.org/netdev/CAHC9VhQZVOmy7n14nTSRGHzwN-y=E_JTUP+NpRCgD8rJN5sOGA@mail.gmail.com/T/

> 2.32.0
>

2021-07-10 07:42:02

by Pavel Skripkin

Subject: Re: [PATCH 2/2] net: cipso: fix memory leak in cipso_v4_doi_free

On Sat, 10 Jul 2021 15:29:19 +0800
Dongliang Mu <[email protected]> wrote:

> On Sat, Jul 10, 2021 at 3:10 PM Pavel Skripkin <[email protected]>
> wrote:
> >
> > When doi_def->type == CIPSO_V4_MAP_TRANS doi_def->map.std should
> > be freed to avoid memory leak.
> >
> > Fail log:
> >
> > BUG: memory leak
> > unreferenced object 0xffff88801b936d00 (size 64):
> > comm "a.out", pid 8478, jiffies 4295042353 (age 15.260s)
> > hex dump (first 32 bytes):
> > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> > 00 00 00 00 15 b8 12 26 00 00 00 00 00 00 00 00 .......&........
> > backtrace:
> > netlbl_cipsov4_add (net/netlabel/netlabel_cipso_v4.c:145
> > net/netlabel/netlabel_cipso_v4.c:416) genl_family_rcv_msg_doit
> > (net/netlink/genetlink.c:741) genl_rcv_msg
> > (net/netlink/genetlink.c:783 net/netlink/genetlink.c:800)
> > netlink_rcv_skb (net/netlink/af_netlink.c:2505) genl_rcv
> > (net/netlink/genetlink.c:813)
> >
> > Fixes: b1edeb102397 ("netlabel: Replace protocol/NetLabel linking
> > with refrerence counts")
> > Signed-off-by: Pavel Skripkin <[email protected]>
> > ---
> > net/ipv4/cipso_ipv4.c | 1 +
> > 1 file changed, 1 insertion(+)
> >
> > diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c
> > index bfaf327e9d12..e0480c6cebaa 100644
> > --- a/net/ipv4/cipso_ipv4.c
> > +++ b/net/ipv4/cipso_ipv4.c
> > @@ -472,6 +472,7 @@ void cipso_v4_doi_free(struct cipso_v4_doi
> > *doi_def) kfree(doi_def->map.std->lvl.local);
> > kfree(doi_def->map.std->cat.cipso);
> > kfree(doi_def->map.std->cat.local);
> > + kfree(doi_def->map.std);
> > break;
> > }
> > kfree(doi_def);
> > --
>
> Hi Paval,
>
> this patch is already merged by Paul. See [1] for more details.
>
> [1]
> https://lore.kernel.org/netdev/CAHC9VhQZVOmy7n14nTSRGHzwN-y=E_JTUP+NpRCgD8rJN5sOGA@mail.gmail.com/T/
>


Hi, Dongliang!

Thank you for the information. I'm wondering, can maintainer pick only 1
patch from series, or I should send v2?



With regards,
Pavel Skripkin

2021-07-10 07:45:50

by Dongliang Mu

Subject: Re: [PATCH 2/2] net: cipso: fix memory leak in cipso_v4_doi_free

On Sat, Jul 10, 2021 at 3:41 PM Pavel Skripkin <[email protected]> wrote:
>
> On Sat, 10 Jul 2021 15:29:19 +0800
> Dongliang Mu <[email protected]> wrote:
>
> > On Sat, Jul 10, 2021 at 3:10 PM Pavel Skripkin <[email protected]>
> > wrote:
> > >
> > > When doi_def->type == CIPSO_V4_MAP_TRANS doi_def->map.std should
> > > be freed to avoid memory leak.
> > >
> > > Fail log:
> > >
> > > BUG: memory leak
> > > unreferenced object 0xffff88801b936d00 (size 64):
> > > comm "a.out", pid 8478, jiffies 4295042353 (age 15.260s)
> > > hex dump (first 32 bytes):
> > > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> > > 00 00 00 00 15 b8 12 26 00 00 00 00 00 00 00 00 .......&........
> > > backtrace:
> > > netlbl_cipsov4_add (net/netlabel/netlabel_cipso_v4.c:145
> > > net/netlabel/netlabel_cipso_v4.c:416) genl_family_rcv_msg_doit
> > > (net/netlink/genetlink.c:741) genl_rcv_msg
> > > (net/netlink/genetlink.c:783 net/netlink/genetlink.c:800)
> > > netlink_rcv_skb (net/netlink/af_netlink.c:2505) genl_rcv
> > > (net/netlink/genetlink.c:813)
> > >
> > > Fixes: b1edeb102397 ("netlabel: Replace protocol/NetLabel linking
> > > with refrerence counts")
> > > Signed-off-by: Pavel Skripkin <[email protected]>
> > > ---
> > > net/ipv4/cipso_ipv4.c | 1 +
> > > 1 file changed, 1 insertion(+)
> > >
> > > diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c
> > > index bfaf327e9d12..e0480c6cebaa 100644
> > > --- a/net/ipv4/cipso_ipv4.c
> > > +++ b/net/ipv4/cipso_ipv4.c
> > > @@ -472,6 +472,7 @@ void cipso_v4_doi_free(struct cipso_v4_doi
> > > *doi_def) kfree(doi_def->map.std->lvl.local);
> > > kfree(doi_def->map.std->cat.cipso);
> > > kfree(doi_def->map.std->cat.local);
> > > + kfree(doi_def->map.std);
> > > break;
> > > }
> > > kfree(doi_def);
> > > --
> >
> > Hi Paval,
> >
> > this patch is already merged by Paul. See [1] for more details.
> >
> > [1]
> > https://lore.kernel.org/netdev/CAHC9VhQZVOmy7n14nTSRGHzwN-y=E_JTUP+NpRCgD8rJN5sOGA@mail.gmail.com/T/
> >
>
>
> Hi, Dongliang!
>
> Thank you for the information. I'm wondering, can maintainer pick only 1
> patch from series, or I should send v2?

I don't know. Maybe you can wait for the reply of the maintainers.

>
>
>
> With regards,
> Pavel Skripkin