dhcpcd-discuss

Hi Shahid


On 06/06/2018 21:54, Shahid Mahmood wrote:
> Hello Roy,
> We are observing dhcpcd crashing with coredumps.
> Environment is ARM embedded device, on wifi, using wpa_supplicant.
>
> ==== version
> dhcpcd v 6.11.5
>
> === Commandline:
> dhcpcd -4 -f /var/run/dhcp/dhcpcd.conf -c /XXX/bin/dhcpcd-run-hooks 
> mlan0 -Q 227 -h XXXX
>
> === /var/run/dhcp/dhcpcd.conf ===
> define 227 string site_specific
> noalias
> nolink
> release
> background
> debug
> noipv4ll
> timeout 60
> option log_servers, ntp_servers, vendor_encapsulated_options, 
> dhcp_lease_time, dhcp_renewal_time, dhcp_rebinding_time
> option domain_name_servers, domain_name, domain_search, host_name, 
> sip_server, interface_mtu
> option site_specific
> noipv6
>
> ==== codedump analysis
>
> Thread 1 (LWP 678):
> #0  0x0002a59c in dhcp_arp_probed (astate=0x1ec17d8) at 
> /usr/src/debug/dhcpcd/6.11.5-r1/dhcpcd-6.11.5/dhcp.c:2032
>          state = 0x1ec1688
>          ifo = 0x1ec2218
> #1  0x00018028 in eloop_start (eloop=0x1ebbc08, signals=0xbe91ea80, 
> signals@entry=0xbe91ea78)
>      at /usr/src/debug/dhcpcd/6.11.5-r1/dhcpcd-6.11.5/eloop.c:873
>          n = <optimized out>
>          e = <optimized out>
>          t = 0x1ebebd0
>          now = {tv_sec = 105, tv_nsec = 319787000}
>          ts = {tv_sec = 0, tv_nsec = 17256000}
>          tsp = <optimized out>
>          t0 = <optimized out>
>          timeout = <optimized out>
> #2  0x00013064 in main (argc=<optimized out>, argv=<optimized out>)
>      at /usr/src/debug/dhcpcd/6.11.5-r1/dhcpcd-6.11.5/dhcpcd.c:1940
>          ctx = {pidfile = "/var/run/dhcpcd-mlan0-4.pid", '\000' <repeats 
> 15 times>,
>            cffile = 0xbe91ee42 "/var/run/dhcp/dhcpcd.conf", options = 
> 310327027263914027, logfile = 0x0, log_fd = -1, argc = 9,
>            argv = 0xbe91ed14, ifac = 0, ifav = 0x0, ifdc = 0, ifdv = 
> 0x0, ifc = 1, ifv = 0xbe91ed34, ifcc = 0, ifcv = 0x0,
>            duid = 0x0, duid_len = 0, ifaces = 0x1ebbd30, pf_inet_fd = 5, 
> priv = 0x1ebbc60, link_fd = 3, seq = 11, sseq = 11,
>            iov = {{iov_base = 0x1ebbea0, iov_len = 256}}, sigset = 
> {__val = {0 <repeats 32 times>}}, eloop = 0x1ebbc08,
>            control_fd = -1, control_unpriv_fd = -1, control_fds = 
> {tqh_first = 0x0, tqh_last = 0xbe91eb0c},
>            control_sock = '\000' <repeats 40 times>, control_group = 0, 
> vivso = 0x0, vivso_len = 0, randomstate = 0x0,
>            ppid = 677, pseq = 4, dhcp_opts = 0x1eba5a8, dhcp_opts_len = 
> 123, ipv4_routes = 0x1ec17f8, ipv4_kroutes = 0x1ec18f8,
>            udp_fd = 8, opt_buffer = 0x0, opt_buffer_len = 0, secret = 
> 0x0, secret_len = 0, nd_opts = 0x1ebbad0,
>            nd_opts_len = 6, dhcp6_opts = 0x1ebfa70, dhcp6_opts_len = 70, 
> ipv6 = 0x0, dev_load = 0x0, dev_fd = -1, dev = 0x0,
>            dev_handle = 0x0}
>          ifo = 0x0
>          ifp = 0x0
>          family = <optimized out>
>          opt = <optimized out>
>          oi = 0
>          i = <optimized out>
>          t = <optimized out>
>          len = <optimized out>
>          pid = <optimized out>
>          sig = <optimized out>
>          siga = <optimized out>
>          __func__ = "\000\000\000\000"
>
> #0  0x0002a59c in dhcp_arp_probed (astate=0x1ec17d8) at 
> /usr/src/debug/dhcpcd/6.11.5-r1/dhcpcd-6.11.5/dhcp.c:2032
> 2032 if (astate->iface->ctx->options & DHCPCD_FORKED)
> frame 0
> p *astate
> $4 = {next = {tqe_next = 0x0, tqe_prev = 0x1ebc6e0}, iface = 0x0, 
> probed_cb = 0x0, announced_cb = 0x3123100a,
>    conflicted_cb = 0x0, free_cb = 0x0, addr = {s_addr = 17}, probes = 
> 32250272, claims = 32250224, failed = {s_addr = 16}}
> p state->state
> $5 = DHS_BOUND
>
> Let me know if you need any more information

I am unable to replicate this at all!
Can you test to see if it still happens with dhcpcd-7.0.5b?

Thanks

Roy