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Cisco Bug: CSCvv52591 - DMA memory leak in ctm_hw_malloc_from_pool causing management and VPN connections to fail

Last Modified

Oct 14, 2020

Products (1)

  • Cisco Adaptive Security Appliance (ASA) Software

Known Affected Releases

9.13(1.5)

Description (partial)

Symptom:
# sh ssl errors
error:140BA041:SSL routines:SSL_new:malloc failure@ssl_lib.c:457
error:140BA041:SSL routines:SSL_new:malloc failure@ssl_lib.c:457
error:140BA041:SSL routines:SSL_new:malloc failure@ssl_lib.c:457
error:140BA041:SSL routines:SSL_new:malloc failure@ssl_lib.c:457

And DMA memory is leaking:
MEMPOOL_DMA POOL STATS:
Non-mmapped bytes allocated =   1073741824Number of free chunks       =         2053
Number of mmapped regions   =            0Mmapped bytes allocated     =            0
Max memory footprint        =   1073741824Keepcost                    =    203743248
Max contiguous free mem     =    203743248Allocated memory in use     =    869816608
Free memory                 =    203925216               >>>>> approx 203 Mb

after ~2weeks ( in this example):
MEMPOOL_DMA POOL STATS:
Non-mmapped bytes allocated =   1073741824
Number of free chunks       =        12417Number of mmapped regions   =            0
Mmapped bytes allocated     =            0Max memory footprint        =   1073741824
Keepcost                    =          112Max contiguous free mem     =          304
Allocated memory in use     =   1072745200Free memory                 =       996624<<<<<<<<

Conditions:
FP4145
9.13.1.5
VPN S2S
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