Administrace komentářů

rony@ares:~/app$ date
St 24. marec 2021, 20:00:13 CET
rony@ares:~/app$ find /home/rony/app/ -perm -4000 -print 
rony@ares:~/app$ ./juke
Chyba segmentácie
rony@ares:~/app$ dmesg | tail -n 20
dmesg: read kernel buffer failed: Operácia nie je povolená
rony@ares:~/app$ sudo dmesg | tail -n 20
[sudo] heslo pre používateľa rony: 
[   91.416889] wlp4s0: send auth to f4:92:bf:77:05:fa (try 1/3)
[   91.418155] wlp4s0: authenticated
[   91.418844] wlp4s0: associate with f4:92:bf:77:05:fa (try 1/3)
[   91.426568] wlp4s0: RX AssocResp from f4:92:bf:77:05:fa (capab=0x11 status=0 aid=3)
[   91.429181] wlp4s0: associated
[   91.554014] IPv6: ADDRCONF(NETDEV_CHANGE): wlp4s0: link becomes ready
[  102.184578] Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7
[  102.227910] Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7
[  102.228870] Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7
[  102.316419] Bluetooth: RFCOMM TTY layer initialized
[  102.316427] Bluetooth: RFCOMM socket layer initialized
[  102.316433] Bluetooth: RFCOMM ver 1.11
[  145.170893] Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7
[  145.176705] Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7
[  145.177285] Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7
[  145.177858] Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7
[  145.177884] Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7
[  153.748940] Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7
[  153.752558] Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7
[  153.752927] Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7
rony@ares:~/app$ coredumpctl
TIME                            PID   UID   GID SIG COREFILE  EXE
Wed 2021-03-24 16:37:45 CET    7673  1000  1000  11 present   /home/rony/.ditec/dlauncher-bin/dLauncher
rony@ares:~/app$ ulimit
unlimited
rony@ares:~/app$

Tu je všetko, binárka nie je SUID, coredump sa nevytvorí, /var/log/messages nemám, ale vlastne namiesto neho mám /var/log/dmesg. dmesg číta tento. Ale aj ten je bez záznamu. Ulimit je unlimited. /var/crash je tiež prázdny. Teraz už je to OK, keď programátor použil novší kompilátor. Ale keby to nezafungovalo, teraz by som bol úplne bezradný (samozrejme pokúsil by som sa to skompilovať u seba). Preto hľadám, spôsob ako to odhaliť, ale ako vidíte, žiadna stopa v systéme. A vlastne aj keď sme to už nejako opravili, nie sme múdrejší. Nevieme prečo to pre root-a fungovalo a pre normálneho usera nie.