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[Help-gnutls] possible memory leak in _gnutls_free_auth_info()
From: |
Michael Weiser |
Subject: |
[Help-gnutls] possible memory leak in _gnutls_free_auth_info() |
Date: |
Thu, 13 Nov 2008 21:30:20 +0100 |
User-agent: |
Mutt/1.5.16 (2007-06-09) |
Hello,
I think I found a memory leak with PSK authentication. After one
successful gnutls_handshake on a fresh session, the leaks tool on my Mac
reports the memory leaks shown below (edited for readability).
I tracked this to a missing case for GNUTLS_CRD_PSK in
_gnutls_free_auth_info() and fixed it using the attached patch. It's
against 2.6.0 but applies cleanly to 2.6.2.
before:
address@hidden:~ # leaks 93514
Process 93514: 4074 nodes malloced for 104 KB
Process 93514: 4 leaks for 592 total leaked bytes.
Leak: 0x31c540 size=304 string 'michael'
Call stack: [thread 0xa03b9fa0]: | start | main |
gnutls_handshake | _gnutls_handshake_server |
_gnutls_send_server_kx_message | gen_psk_server_kx |
_gnutls_auth_info_set | calloc | malloc_zone_calloc
Leak: 0x31c6f0 size=144
Call stack: [thread 0xa03b9fa0]: | start | main |
gnutls_handshake | _gnutls_handshake_server |
_gnutls_send_server_kx_message | gen_psk_server_kx |
_gnutls_dh_set_group | _gnutls_mpi_dprint_lz | malloc |
malloc_zone_malloc
Leak: 0x31ca80 size=128
Call stack: [thread 0xa03b9fa0]: | start | main |
gnutls_handshake | _gnutls_handshake_server |
_gnutls_recv_client_kx_message | proc_psk_client_kx |
_gnutls_proc_dh_common_client_kx | _gnutls_dh_set_peer_public |
_gnutls_mpi_dprint_lz | malloc | malloc_zone_malloc
Leak: 0x300a20 size=16 string 'UUUUUUUUUUUUUUU'
Call stack: [thread 0xa03b9fa0]: | start | main |
gnutls_handshake | _gnutls_handshake_server |
_gnutls_send_server_kx_message | gen_psk_server_kx |
_gnutls_dh_set_group | _gnutls_mpi_dprint_lz | malloc |
malloc_zone_malloc
after:
address@hidden:~ # leaks 6276
Process 6276: 4070 nodes malloced for 104 KB
Process 6276: 0 leaks for 0 total leaked bytes.
--
Micha
gnutls-2.6.0-psk-auth-info-memleak.patch
Description: Text document
- [Help-gnutls] possible memory leak in _gnutls_free_auth_info(),
Michael Weiser <=