On 2023-01-05, Stuart Henderson <stu.li...@spacehopper.org> wrote:
Assuming you don't already have a dhcpcd.core somewhere from a non-suid process, try sysctl.kern.nosuidcoredump=2, mkdir /var/crash/dhcpcd, and see if a $PID.core shows up there.
I set the kernel state as specified and made that directory. As mentioned before, it should be about 5 days until it crashes again. I will report back on po...@openbsd.org. I did not build dhcpcd with debug symbols yet; but if I have to, then I will when the time comes. One last thing that may be relevant is that when I run dhcpcd -U em0, it sometimes times out. Furthermore, regardless if it times out, /var/log/daemon always shows: Jan 4 19:45:02 router dhcpcd[73253]: control command: dhcpcd -U em0 Jan 4 19:45:02 router dhcpcd[73253]: control_free: No such file or directory That control_free message is one of the messages that shows when it crashes. I normally have to run it multiple times until I can see the entire output. When it times out, it always times out right before the dhcp6 information. For example: reason=CARRIER interface=em0 protocol=link if_configured=true ifcarrier=up ifmetric=0 ifwireless=0 ifflags=34883 ifmtu=1500 reason=RENEW interface=em0 protocol=dhcp ip_address=71.229.183.31 subnet_cidr=22 network_number=71.229.180.0 subnet_mask=255.255.252.0 routers=71.229.180.1 broadcast_address=255.255.255.255 dhcp_lease_time=345600 dhcp_message_type=5 dhcp_server_identifier=96.113.84.152 dhcp_renewal_time=172800 dhcp_rebinding_time=302400 reason=ROUTERADVERT interface=em0 protocol=ra nd1_from=fe80::201:5cff:fe63:ee46 nd1_acquired=772413 nd1_now=772414 nd1_hoplimit=64 nd1_flags=MO nd1_lifetime=1800 nd1_prefix_information1_length=64 nd1_prefix_information1_flags= nd1_prefix_information1_vltime=604800 nd1_prefix_information1_pltime=302400 nd1_prefix_information1_prefix=2001:558:4070:83:: nd1_prefix_information2_length=64 nd1_prefix_information2_flags= nd1_prefix_information2_vltime=604800 nd1_prefix_information2_pltime=302400 nd1_prefix_information2_prefix=2001:558:5021:32:: nd1_prefix_information3_length=64 nd1_prefix_information3_flags= nd1_prefix_information3_vltime=604800 nd1_prefix_information3_pltime=302400 nd1_prefix_information3_prefix=2001:558:6040:83:: nd1_prefix_information4_length=64 nd1_prefix_information4_flags= nd1_prefix_information4_vltime=604800 nd1_prefix_information4_pltime=302400 nd1_prefix_information4_prefix=2001:558:803a:47:: dhcpcd_readdumptimeout
