Package: dnsmasq-base Version: 2.86-1.1 Severity: important Hello,
I have been using dnsmasq for ages but it recenty broke, probably with the ugrade from 2.85. Occassionaly dnsmasq ist stuck at 100% CPU and does not respond to queries or the TERM signal, only kill -9 seems to work. I have rebuilt locally with nostrip to get some info: ----- root@argenau:~# gdb /usr/sbin/dnsmasq 563 GNU gdb (Debian 10.1-2) 10.1.90.20210103-git Copyright (C) 2021 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <https://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/sbin/dnsmasq... Attaching to program: /usr/sbin/dnsmasq, process 563 Reading symbols from /lib/x86_64-linux-gnu/libdbus-1.so.3... Download failed: Function not implemented. Continuing without debug info for /lib/x86_64-linux-gnu/libdbus-1.so.3. (No debugging symbols found in /lib/x86_64-linux-gnu/libdbus-1.so.3) Reading symbols from /usr/lib/x86_64-linux-gnu/libidn2.so.0... Download failed: Function not implemented. Continuing without debug info for /u--Type <RET> for more, q to quit, c to continue without paging-- sr/lib/x86_64-linux-gnu/libidn2.so.0. (No debugging symbols found in /usr/lib/x86_64-linux-gnu/libidn2.so.0) Reading symbols from /usr/lib/x86_64-linux-gnu/libnetfilter_conntrack.so.3... Download failed: Function not implemented. Continuing without debug info for /usr/lib/x86_64-linux-gnu/libnetfilter_conntrack.so.3. (No debugging symbols found in /usr/lib/x86_64-linux-gnu/libnetfilter_conntrack.so.3) Reading symbols from /usr/lib/x86_64-linux-gnu/libnettle.so.8... Download failed: Function not implemented. Continuing without debug info for /usr/lib/x86_64-linux-gnu/libnettle.so.8. (No debugging symbols found in /usr/lib/x86_64-linux-gnu/libnettle.so.8) Reading symbols from /usr/lib/x86_64-linux-gnu/libhogweed.so.6... Download failed: Function not implemented. Continuing without debug info for /usr/lib/x86_64-linux-gnu/libhogweed.so.6. (No debugging symbols found in /usr/lib/x86_64-linux-gnu/libhogweed.so.6) Reading symbols from /usr/lib/x86_64-linux-gnu/libgmp.so.10... Download failed: Function not implemented. Continuing without debug info for /usr/lib/x86_64-linux-gnu/libgmp.so.10. (No debugging symbols found in /usr/lib/x86_64-linux-gnu/libgmp.so.10) Reading symbols from /lib/x86_64-linux-gnu/libc.so.6... Download failed: Function not implemented. Continuing without debug info for /lib/x86_64-linux-gnu/libc.so.6. (No debugging symbols found in /lib/x86_64-linux-gnu/libc.so.6) --Type <RET> for more, q to quit, c to continue without paging-- Reading symbols from /lib/x86_64-linux-gnu/libpthread.so.0... Download failed: Function not implemented. Continuing without debug info for /lib/x86_64-linux-gnu/libpthread.so.0. (No debugging symbols found in /lib/x86_64-linux-gnu/libpthread.so.0) [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Reading symbols from /usr/lib/x86_64-linux-gnu/libsystemd.so.0... Download failed: Function not implemented. Continuing without debug info for /usr/lib/x86_64-linux-gnu/libsystemd.so.0. (No debugging symbols found in /usr/lib/x86_64-linux-gnu/libsystemd.so.0) Reading symbols from /usr/lib/x86_64-linux-gnu/libunistring.so.2... Download failed: Function not implemented. Continuing without debug info for /usr/lib/x86_64-linux-gnu/libunistring.so.2. (No debugging symbols found in /usr/lib/x86_64-linux-gnu/libunistring.so.2) Reading symbols from /usr/lib/x86_64-linux-gnu/libnfnetlink.so.0... Download failed: Function not implemented. Continuing without debug info for /usr/lib/x86_64-linux-gnu/libnfnetlink.so.0. (No debugging symbols found in /usr/lib/x86_64-linux-gnu/libnfnetlink.so.0) Reading symbols from /usr/lib/x86_64-linux-gnu/libmnl.so.0... Download failed: Function not implemented. Continuing without debug info for /usr/lib/x86_64-linux-gnu/libmnl.so.0. (No debugging symbols found in /usr/lib/x86_64-linux-gnu/libmnl.so.0) Reading symbols from /lib64/ld-linux-x86-64.so.2... --Type <RET> for more, q to quit, c to continue without paging-- Download failed: Function not implemented. Continuing without debug info for /lib64/ld-linux-x86-64.so.2. (No debugging symbols found in /lib64/ld-linux-x86-64.so.2) Reading symbols from /lib/x86_64-linux-gnu/librt.so.1... Download failed: Function not implemented. Continuing without debug info for /lib/x86_64-linux-gnu/librt.so.1. (No debugging symbols found in /lib/x86_64-linux-gnu/librt.so.1) Reading symbols from /lib/x86_64-linux-gnu/liblzma.so.5... Download failed: Function not implemented. Continuing without debug info for /lib/x86_64-linux-gnu/liblzma.so.5. (No debugging symbols found in /lib/x86_64-linux-gnu/liblzma.so.5) Reading symbols from /usr/lib/x86_64-linux-gnu/libzstd.so.1... Download failed: Function not implemented. Continuing without debug info for /usr/lib/x86_64-linux-gnu/libzstd.so.1. (No debugging symbols found in /usr/lib/x86_64-linux-gnu/libzstd.so.1) Reading symbols from /usr/lib/x86_64-linux-gnu/liblz4.so.1... Download failed: Function not implemented. Continuing without debug info for /usr/lib/x86_64-linux-gnu/liblz4.so.1. (No debugging symbols found in /usr/lib/x86_64-linux-gnu/liblz4.so.1) Reading symbols from /lib/x86_64-linux-gnu/libcap.so.2... Download failed: Function not implemented. Continuing without debug info for /lib/x86_64-linux-gnu/libcap.so.2. (No debugging symbols found in /lib/x86_64-linux-gnu/libcap.so.2) --Type <RET> for more, q to quit, c to continue without paging-- Reading symbols from /usr/lib/x86_64-linux-gnu/libgcrypt.so.20... Download failed: Function not implemented. Continuing without debug info for /usr/lib/x86_64-linux-gnu/libgcrypt.so.20. (No debugging symbols found in /usr/lib/x86_64-linux-gnu/libgcrypt.so.20) Reading symbols from /lib/x86_64-linux-gnu/libgpg-error.so.0... Download failed: Function not implemented. Continuing without debug info for /lib/x86_64-linux-gnu/libgpg-error.so.0. (No debugging symbols found in /lib/x86_64-linux-gnu/libgpg-error.so.0) Reading symbols from /lib/x86_64-linux-gnu/libnss_files.so.2... Download failed: Function not implemented. Continuing without debug info for /lib/x86_64-linux-gnu/libnss_files.so.2. (No debugging symbols found in /lib/x86_64-linux-gnu/libnss_files.so.2) Download failed: Function not implemented. Continuing without debug info for /root/system-supplied DSO at 0x7fff061d3000. forward_query (udpfd=4, udpaddr=udpaddr@entry=0x7fff0613fe30, dst_addr=dst_addr@entry=0x7fff0613fe10, dst_iface=dst_iface@entry=0, header=header@entry=0x5642f3fd61b0, plen=plen@entry=31, limit=0x5642f3fd63b0 "", now=1639290341, forward=0x5642f3fe6d30, ad_reqd=1, do_bit=0) at ./debian/build/no-lua/forward.c:337 Download failed: Function not implemented. Continuing without source file ./debian/build/no-lua/./debian/build/no-lua/forward.c. 337 ./debian/build/no-lua/forward.c: No such file or directory. (gdb) bt full #0 forward_query (udpfd=4, udpaddr=udpaddr@entry=0x7fff0613fe30, dst_addr=dst_addr@entry=0x7fff0613fe10, dst_iface=dst_iface@entry=0, header=header@entry=0x5642f3fd61b0, plen=plen@entry=31, limit=0x5642f3fd63b0 "", now=1639290341, forward=0x5642f3fe6d30, ad_reqd=1, do_bit=0) at ./debian/build/no-lua/forward.c:337 is_sign = -201498161 pheader = 0x0 flags = 0 fwd_flags = <optimized out> is_dnssec = 0 master = <optimized out> gotname = 128 hash = <optimized out> oph = 0x0 old_src = 1 first = 22082 last = -201498192 start = 0 subnet = 12 cacheable = 0 forwarded = 0 edns0_len = 94845561299407 pheader = 0x5642f3fd61cf "" ede = -1 #1 0x00005642f2923ebe in receive_query (listen=listen@entry=0x5642f3fdec30, now=now@entry=1639290341) at ./debian/build/no-lua/forward.c:1636 ad_reqd = 1 header = 0x5642f3fd61b0 source_addr = {sa = {sa_family = 2, sa_data = "\341\025\177\000\000\001\000\000\000\000\000\000\000"}, in = {sin_family = 2, sin_port = 5601, sin_addr = { s_addr = 16777343}, sin_zero = "\000\000\000\000\000\000\000"}, in6 = {sin6_family = 2, sin6_port = 5601, sin6_flowinfo = 16777343, sin6_addr = {__in6_u = { __u6_addr8 = "\000\000\000\000\000\000\000\000䕵a\000\000\000", __u6_addr16 = {0, 0, 0, 0, 38372, 25013, 0, 0}, __u6_addr32 = {0, 0, 1639290340, 0}}}, sin6_scope_id = 4093500320}} pheader = 0x5642f29243b8 <return_reply+376> "1\366L\211\351\213{8H\213\005\251\210\004" type = 1 udp_size = <optimized out> dst_addr = {addr4 = {s_addr = 16777343}, addr6 = {__in6_u = { __u6_addr8 = "\177\000\000\001BV\000\000\060\067\376\363BV\000", __u6_addr16 = {127, 256, 22082, 0, 14128, 62462, 22082, 0}, __u6_addr32 = {16777343, 22082, 4093523760, 22082}}}, cname = { target = {cache = 0x56420100007f, name = 0x56420100007f <error: Cannot access memory at address 0x56420100007f>}, uid = 4093523760, is_name_ptr = 22082}, key = { keydata = 0x56420100007f, keylen = 14128, flags = 62462, keytag = 22082, algo = 0 '\000'}, ds = {keydata = 0x56420100007f, keylen = 14128, keytag = 62462, algo = 66 'B', digest = 86 'V'}, srv = {target = 0x56420100007f, targetlen = 14128, srvport = 62462, priority = 22082, weight = 0}, log = {keytag = 127, algo = 256, digest = 22082, rcode = 0, ede = -201443536}} netmask = {s_addr = <optimized out>} dst_addr_4 = {s_addr = 16777343} m = <optimized out> --Type <RET> for more, q to quit, c to continue without paging--c n = 31 if_index = 0 auth_dns = 0 do_bit = 0 have_pseudoheader = <optimized out> mark = 0 have_mark = <optimized out> is_single_query = <optimized out> allowed = <optimized out> local_auth = <optimized out> iov = {{iov_base = 0x5642f3fd61b0, iov_len = 4096}} msg = {msg_name = 0x7fff0613fe30, msg_namelen = 16, msg_iov = 0x7fff0613fe20, msg_iovlen = 1, msg_control = 0x7fff0613fe50, msg_controllen = 0, msg_flags = 0} cmptr = <optimized out> control_u = {align = {cmsg_len = 94845561295840, cmsg_level = -225395900, cmsg_type = 16280, __cmsg_data = 0x7fff0613fe60 "\020"}, control6 = "\340S\375\363BV\000\000D\273\220\362\230?\000\000\020\000\000\000\003\000\000\000\005", '\000' <repeats 14 times>, control = "\340S\375\363BV\000\000D\273\220\362\230?\000\000\020\000\000\000\003\000\000\000\005\000\000\000\000\000\000"} family = <optimized out> check_dst = <optimized out> #2 0x00005642f292901b in check_dns_listeners (now=now@entry=1639290341) at ./debian/build/no-lua/dnsmasq.c:1810 serverfdp = <optimized out> listener = 0x5642f3fdec30 rfl = <optimized out> i = <optimized out> pipefd = {1, 0} #3 0x00005642f2909526 in main (argc=<optimized out>, argv=<optimized out>) at ./debian/build/no-lua/dnsmasq.c:1237 timeout = <optimized out> bind_fallback = 0 now = 1639290341 sigact = {__sigaction_handler = {sa_handler = 0x1, sa_sigaction = 0x1}, sa_mask = {__val = {0, 48, 37, 140265041952771, 10, 249108103209, 0, 206158430211, 0, 0, 0, 472446402651, 511101108348, 140267950717856, 1, 37}}, sa_flags = 0, sa_restorer = 0x0} if_tmp = <optimized out> piperead = <optimized out> pipefd = {9, 10} err_pipe = {11, 12} ent_pw = 0x7f92ad607420 script_uid = 0 script_gid = 0 gp = <optimized out> i = <optimized out> max_fd = <optimized out> baduser = <optimized out> log_err = 0 chown_warn = 0 hdr = 0x5642f3fde160 data = <optimized out> need_cap_net_admin = <optimized out> need_cap_net_raw = <optimized out> need_cap_net_bind_service = <optimized out> bound_device = 0x0 did_bind = 0 serv = <optimized out> netlink_warn = <optimized out> context = <optimized out> relay = <optimized out> tftp_prefix_missing = 0 capsize = <optimized out> fail = <optimized out> (gdb) info registers rax 0x5642f3fe6d30 94845561367856 rbx 0x1 1 rcx 0x5642f3fd53e0 94845561295840 rdx 0x0 0 rsi 0x7fff0613fe30 140733295361584 rdi 0x5642f3fe5f40 94845561364288 rbp 0x5642f3fe6d30 0x5642f3fe6d30 rsp 0x7fff0613fc70 0x7fff0613fc70 r8 0x1 1 r9 0x0 0 r10 0x0 0 r11 0x0 0 r12 0x5642f3fe5f40 94845561364288 r13 0x7fff0613fe30 140733295361584 r14 0x7fff0613fe30 140733295361584 r15 0x5642f3fd61b0 94845561299376 rip 0x5642f2922a7a 0x5642f2922a7a <forward_query+314> eflags 0x206 [ PF IF ] cs 0x33 51 ss 0x2b 43 ds 0x0 0 es 0x0 0 fs 0x0 0 gs 0x0 0 (gdb) x/16i $pc => 0x5642f2922a7a <forward_query+314>: test %rax,%rax 0x5642f2922a7d <forward_query+317>: jne 0x5642f2922a70 <forward_query+304> 0x5642f2922a7f <forward_query+319>: mov 0x180(%rbp),%rsi 0x5642f2922a86 <forward_query+326>: mov 0x178(%rbp),%rdi 0x5642f2922a8d <forward_query+333>: mov %r15,%rdx 0x5642f2922a90 <forward_query+336>: call 0x5642f294fce0 <blockdata_retrieve> 0x5642f2922a95 <forward_query+341>: mov 0x4a1d4(%rip),%rax # 0x5642f296cc70 <dnsmasq_daemon> 0x5642f2922a9c <forward_query+348>: xor %ecx,%ecx 0x5642f2922a9e <forward_query+350>: mov %r15,%rdi 0x5642f2922aa1 <forward_query+353>: mov 0x180(%rbp),%rbx 0x5642f2922aa8 <forward_query+360>: mov 0x438(%rax),%rdx 0x5642f2922aaf <forward_query+367>: mov %rbx,%rsi 0x5642f2922ab2 <forward_query+370>: mov %rbx,0x8(%rsp) 0x5642f2922ab7 <forward_query+375>: call 0x5642f2910820 <extract_request> 0x5642f2922abc <forward_query+380>: xor %r9d,%r9d 0x5642f2922abf <forward_query+383>: xor %edx,%edx (gdb) thread apply all backtrace Thread 1 (Thread 0x7f92acd0ffc0 (LWP 563) "dnsmasq"): #0 forward_query (udpfd=4, udpaddr=udpaddr@entry=0x7fff0613fe30, dst_addr=dst_addr@entry=0x7fff0613fe10, dst_iface=dst_iface@entry=0, header=header@entry=0x5642f3fd61b0, plen=plen@entry=31, limit=0x5642f3fd63b0 "", now=1639290341, forward=0x5642f3fe6d30, ad_reqd=1, do_bit=0) at ./debian/build/no-lua/forward.c:337 #1 0x00005642f2923ebe in receive_query (listen=listen@entry=0x5642f3fdec30, now=now@entry=1639290341) at ./debian/build/no-lua/forward.c:1636 #2 0x00005642f292901b in check_dns_listeners (now=now@entry=1639290341) at ./debian/build/no-lua/dnsmasq.c:1810 #3 0x00005642f2909526 in main (argc=<optimized out>, argv=<optimized out>) at ./debian/build/no-lua/dnsmasq.c:1237 (gdb) info program Using the running image of attached Thread 0x7f92acd0ffc0 (LWP 563). Program stopped at 0x5642f2922a7a. Type "info stack" or "info registers" for more information. (gdb) info stack #0 forward_query (udpfd=4, udpaddr=udpaddr@entry=0x7fff0613fe30, dst_addr=dst_addr@entry=0x7fff0613fe10, dst_iface=dst_iface@entry=0, header=header@entry=0x5642f3fd61b0, plen=plen@entry=31, limit=0x5642f3fd63b0 "", now=1639290341, forward=0x5642f3fe6d30, ad_reqd=1, do_bit=0) at ./debian/build/no-lua/forward.c:337 #1 0x00005642f2923ebe in receive_query (listen=listen@entry=0x5642f3fdec30, now=now@entry=1639290341) at ./debian/build/no-lua/forward.c:1636 #2 0x00005642f292901b in check_dns_listeners (now=now@entry=1639290341) at ./debian/build/no-lua/dnsmasq.c:1810 #3 0x00005642f2909526 in main (argc=<optimized out>, argv=<optimized out>) at ./debian/build/no-lua/dnsmasq.c:1237 (gdb) info registers rax 0x5642f3fe6d30 94845561367856 rbx 0x1 1 rcx 0x5642f3fd53e0 94845561295840 rdx 0x0 0 rsi 0x7fff0613fe30 140733295361584 rdi 0x5642f3fe5f40 94845561364288 rbp 0x5642f3fe6d30 0x5642f3fe6d30 rsp 0x7fff0613fc70 0x7fff0613fc70 r8 0x1 1 r9 0x0 0 r10 0x0 0 r11 0x0 0 r12 0x5642f3fe5f40 94845561364288 r13 0x7fff0613fe30 140733295361584 r14 0x7fff0613fe30 140733295361584 r15 0x5642f3fd61b0 94845561299376 rip 0x5642f2922a7a 0x5642f2922a7a <forward_query+314> eflags 0x206 [ PF IF ] cs 0x33 51 ss 0x2b 43 ds 0x0 0 es 0x0 0 fs 0x0 0 gs 0x0 0 (gdb) continue Continuing. Program terminated with signal SIGKILL, Killed. The program no longer exists. ----- cu Andreas -- System Information: Debian Release: bookworm/sid APT prefers testing-debug APT policy: (500, 'testing-debug'), (500, 'testing'), (1, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 5.15.0-2-amd64 (SMP w/4 CPU threads) Locale: LANG=de_AT.UTF-8, LC_CTYPE=de_AT.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages dnsmasq-base depends on: ii adduser 3.118 ii libc6 2.32-5 ii libdbus-1-3 1.12.20-3 ii libgmp10 2:6.2.1+dfsg-3 ii libhogweed6 3.7.3-1 ii libidn2-0 2.3.2-2 ii libnetfilter-conntrack3 1.0.8-3 ii libnettle8 3.7.3-1 Versions of packages dnsmasq-base recommends: ii dns-root-data 2021011101 dnsmasq-base suggests no packages. -- debconf-show failed -- `What a good friend you are to him, Dr. Maturin. His other friends are so grateful to you.' `I sew his ears on from time to time, sure'
