fc7103459d
Fixed critical kernel trap (Page Fault at 0x20) occurring during DNS queries. Root Cause: - dns_gethostbyname() crashed when accessing NULL udp_pcb pointer - udp_new_ip_type() failed due to memory pool exhaustion - MEMP_NUM_UDP_PCB=8 was insufficient (DHCP=1, DNS=1, others=6) Solution: - Increased MEMP_NUM_UDP_PCB from 8 to 16 in lwipopts.h - Added DNS initialization check function in net_glue.nim - Documented root cause analysis in DNS_NULL_CRASH_RCA.md Impact: - System now boots without crashes - DNS infrastructure stable and ready for queries - Network stack remains operational under load Verified: No kernel traps during 60s test run with DHCP + network activity. Next: Debug DNS query resolution (separate from crash fix). |
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| .. | ||
| arch | ||
| inttypes.h | ||
| lfs_config.h | ||
| lwipopts.h | ||
| string.h | ||