[PATCH 0/2] pfinet: fix missing MAP_FAILED checks in mmap paths

This series fixes two latent crash bugs in pfinet where mmap
return values go unchecked, may causing crash when memory is tight.

Both bugs follow the same pattern: mmap is called to grow a buffer,
but the returned pointer is dereferenced before (or without) checking
for MAP_FAILED.  Under normal operation mmap rarely fails, so these
have gone unnoticed, but under address-space pressure pfinet would
crash.

Patch 1 fixes S_pfinet_siocgifconf
Patch 2 fixes S_pfinet_getroutes

Sophiel Zhou (2):
  pfinet: add MAP_FAILED check after mmap in S_pfinet_siocgifconf
  pfinet: check MAP_FAILED immediately after mmap in S_pfinet_getroutes

 pfinet/pfinet-ops.c | 31 +++++++++++++++++--------------
 1 file changed, 17 insertions(+), 14 deletions(-)

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2.54.0