It might be different from what everyone else is dealing with, but having
just enabled Kerberos in the CUPS interface after getting tickets, I tried
modifying a printer in the web interface that was not yet configured to use
it. This appears to cause CUPS to get in a loop calling cupsdDoSelect()
forever:
#0 cupsdDoSelect (timeout=1) at select.c:400
nfds = <optimized out>
fdptr = <optimized out>
pfd = <optimized out>
count = <optimized out>
#1 0x0000558ad494d283 in main (argc=<optimized out>, argv=<optimized out>) at
main.c:847
i = 2
opt = <optimized out>
close_all = <optimized out>
disconnect = <optimized out>
fg = <optimized out>
run_as_child = <optimized out>
print_profile = <optimized out>
fds = 2
con = <optimized out>
job = <optimized out>
lis = <optimized out>
current_time = <optimized out>
activity = <optimized out>
senddoc_time = 1603730037
expire_time = 1603730038
report_time = 0
event_time = 1603729690
timeout = 1
limit = {rlim_cur = 524288, rlim_max = 524288}
action = {__sigaction_handler = {sa_handler = 0x558ad49644b0
<sigterm_handler>, sa_sigaction = 0x558ad49644b0 <sigterm_handler>},
sa_mask = {__val = {81920, 0 <repeats 15 times>}}, sa_flags = 0,
sa_restorer = 0x0}
netif_time = 1603730018
service_idle_exit = 0
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