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[lwip-devel] Calling dhcp_release before dhcp_start dereferences NULL
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From: |
Mason |
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Subject: |
[lwip-devel] Calling dhcp_release before dhcp_start dereferences NULL |
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Date: |
Tue, 12 Jun 2012 16:00:42 +0200 |
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User-agent: |
Mozilla/5.0 (Windows NT 5.1; rv:12.0) Gecko/20120429 Firefox/12.0 SeaMonkey/2.9.1 |
Hello,
I suppose this should be considered a programming error, but
I'm not sure it should bring the system down.
Calling dhcp_release when dhcp_start has never been called
causes a NULL dereference (because the dhcp struct has never
been allocated).
dhcp_release calls dhcp_set_state(dhcp, DHCP_OFF);
dhcp_state( ) reads dhcp->state.
If dhcp is NULL : bam.
--
Regards.
- [lwip-devel] Calling dhcp_release before dhcp_start dereferences NULL,
Mason <=