Re: [PATCH v2 net] sfc: fix potential memory leak in efx_mae_process_mport()

From
Jacob Keller <jacob.e.keller@intel.com>
Date
2025-10-24 20:13:45
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Reply to
Edward Cree, 2025-10-24

On 10/24/2025 7:48 AM, Edward Cree wrote:
On 24/10/2025 01:48, Jacob Keller wrote:
quoted
On 10/23/2025 7:18 AM, Abdun Nihaal wrote:
quoted
In efx_mae_enumerate_mports(), memory allocated for mae_mport_desc is
passed as a argument to efx_mae_process_mport(), but when the error path
in efx_mae_process_mport() gets executed, the memory allocated for desc
gets leaked.

Fix that by freeing the memory allocation before returning error.
Why not make the caller responsible for freeing desc on failure?
Since the callee takes ownership of desc on success (it stashes it in a
 table), arguably it's cleaner to have it do so in all cases; it's an
 aesthetic judgment call but I think I'd rather keep it this way and just
 fix this one failure path than change all the existing failure paths and
 the caller.
Alejandro (original author of this code) might have a different opinion
 in which case I'll defer to him but otherwise I'd say v2 is fine to apply
 as-is.
Fair enough.

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Thread (6 messages) 6 messages, 4 authors, last reply 2025-10-28
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