Hello, On Sun, 2016-10-09 at 23:31 +0200, Frank Reppin wrote: > Hellos, > > at first - sorry if this is the complete wrong place to > come up with this issue... > > OS details: > ============= > Debian Jessie 8.6 x64 > ulogd2 -> 2.0.4-2+deb8u1 > iptables -> 1.4.21-2+b1 > libnetfilter-log1 -> 1.0.1-1.1 > libnfnetlink0 -> 1.0.1-3 > > Problem: > ========== > It segfaults... really soon after I connect via WLAN/hostapd > and some iptables log rule kicks in. > > backtrace: > =========== > Program received signal SIGSEGV, Segmentation fault. > _interp_iphdr (pi=0x555555768b50, len=0) at > ulogd_raw2packet_BASE.c:718 > 718 ulogd_raw2packet_BASE.c: No such file or directory. > (gdb) bt > #0 _interp_iphdr (pi=0x555555768b50, len=0) at > ulogd_raw2packet_BASE.c:718 > #1 0x0000555555558dcb in ulogd_propagate_results > (pi=pi@entry=0x555555766090) at ulogd.c:518 > #2 0x00007ffff740d1fb in interp_packet (ldata=0x7fffffffe290, > pf_family=2 '\002', upi=0x555555766090) at ulogd_inppkt_NFLOG.c:400 > #3 msg_cb (gh=<optimized out>, nfmsg=0x7ffff7fc67d8, > nfa=0x7fffffffe290, data=0x555555766090) at ulogd_inppkt_NFLOG.c:483 > #4 0x00007ffff7208307 in ?? () from > /usr/lib/x86_64-linux-gnu/libnetfilter_log.so.1 > #5 0x00007ffff7003627 in nfnl_handle_packet () from > /usr/lib/x86_64-linux-gnu/libnfnetlink.so.0 > #6 0x00007ffff740cafe in nful_read_cb (fd=<optimized out>, > what=<optimized out>, param=0x555555766090) at > ulogd_inppkt_NFLOG.c:463 > #7 0x00005555555594a8 in ulogd_select_main (tv=<optimized out>) at > select.c:105 > #8 0x0000555555556ed7 in ulogd_main_loop () at ulogd.c:934 > #9 main (argc=<optimized out>, argv=<optimized out>) at ulogd.c:1477 > > Additional details: > ==================== > ulogd2 used to behave fine here (no segfaults/no issues at all) with > previous kernel releases (for example 4.7.7 is OK) >From what I can see, it looks possible there is a problem introduced by copy range handling change introduce in this kernel. Is it possible for you to test latest iptables ? It should handle the range correctly and this should fix the problem. In the mean time, I'll continue to investigate. BR, -- Eric Leblond <eric@xxxxxxxxx> Blog: https://home.regit.org/ -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
