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* re: net: UDP tunnel encapsulation module for tunnelling different
@ 2020-02-25 23:04 Colin Ian King
  2020-02-26  4:10 ` Varghese, Martin (Nokia - IN/Bangalore)
  0 siblings, 1 reply; 2+ messages in thread
From: Colin Ian King @ 2020-02-25 23:04 UTC (permalink / raw)
  To: Martin Varghese, David S. Miller, Jakub Kicinski,
	Alexey Kuznetsov, Hideaki YOSHIFUJI, netdev
  Cc: linux-kernel

Hi,

Static analysis with Coverity detected an issue in function
bareudp_xmit_skb with the return of an uninitialized value in variable
err in the following commit:

commit 571912c69f0ed731bd1e071ade9dc7ca4aa52065
Author: Martin Varghese <martin.varghese@nokia.com>
Date:   Mon Feb 24 10:57:50 2020 +0530

    net: UDP tunnel encapsulation module for tunnelling different
protocols like MPLS, IP, NSH etc.

The analysis is as follows:

var_decl: Declaring variable err without initializer.

301        int err;
302

...

344 free_dst:
345        dst_release(&rt->dst);

Uninitialized scalar variable (UNINIT)
uninit_use: Using uninitialized value err.

346        return err;
347 }

and also in function bareudp6_xmit_skb:

var_decl: Declaring variable err without initializer.

364        int err;
365

...

404
405 free_dst:
406        dst_release(dst);

Uninitialized scalar variable (UNINIT)
uninit_use: Using uninitialized value err.

407        return err;
408 }

Colin

^ permalink raw reply	[flat|nested] 2+ messages in thread

* RE: net: UDP tunnel encapsulation module for tunnelling different
  2020-02-25 23:04 net: UDP tunnel encapsulation module for tunnelling different Colin Ian King
@ 2020-02-26  4:10 ` Varghese, Martin (Nokia - IN/Bangalore)
  0 siblings, 0 replies; 2+ messages in thread
From: Varghese, Martin (Nokia - IN/Bangalore) @ 2020-02-26  4:10 UTC (permalink / raw)
  To: Colin Ian King, David S. Miller, Jakub Kicinski,
	Alexey Kuznetsov, Hideaki YOSHIFUJI, netdev
  Cc: linux-kernel

HI Colin

David had fixed this issue in the below commit.

c102b6f bareudp: Fix uninitialized variable warnings.

Regards,
Martin

-----Original Message-----
From: Colin Ian King <colin.king@canonical.com> 
Sent: Wednesday, February 26, 2020 4:35 AM
To: Varghese, Martin (Nokia - IN/Bangalore) <martin.varghese@nokia.com>; David S. Miller <davem@davemloft.net>; Jakub Kicinski <kuba@kernel.org>; Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>; Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>; netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Subject: re: net: UDP tunnel encapsulation module for tunnelling different

Hi,

Static analysis with Coverity detected an issue in function bareudp_xmit_skb with the return of an uninitialized value in variable err in the following commit:

commit 571912c69f0ed731bd1e071ade9dc7ca4aa52065
Author: Martin Varghese <martin.varghese@nokia.com>
Date:   Mon Feb 24 10:57:50 2020 +0530

    net: UDP tunnel encapsulation module for tunnelling different protocols like MPLS, IP, NSH etc.

The analysis is as follows:

var_decl: Declaring variable err without initializer.

301        int err;
302

...

344 free_dst:
345        dst_release(&rt->dst);

Uninitialized scalar variable (UNINIT)
uninit_use: Using uninitialized value err.

346        return err;
347 }

and also in function bareudp6_xmit_skb:

var_decl: Declaring variable err without initializer.

364        int err;
365

...

404
405 free_dst:
406        dst_release(dst);

Uninitialized scalar variable (UNINIT)
uninit_use: Using uninitialized value err.

407        return err;
408 }

Colin

^ permalink raw reply	[flat|nested] 2+ messages in thread

end of thread, other threads:[~2020-02-26  4:10 UTC | newest]

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