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Incident report
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Resolution: Unresolved
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Trivial
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None
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6.2.9
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None
Using the pre-compiled official agent: https://cdn.zabbix.com/zabbix/binaries/stable/6.2/6.2.9/zabbix_agent-6.2.9-linux-3.0-amd64-static.tar.gz
I get the following crash:
/usr/local/sbin/zabbix_agentd -f -p agent.hostname [s|storage002] agent.hostmetadata [s|Linux storage002 4.18.0-305.3.1.el8.x86_64 #1 SMP Tue Jun 1 16:14:33 UTC 2021 x86_64] agent.ping [u|1] agent.variant [u|1] agent.version [s|6.2.9] modbus.get[tcp://127.0.0.1] [m|ZBX_NOTSUPPORTED] system.localtime[utc] [u|1680085798] system.run[echo test] [t|test] vfs.file.size[/etc/passwd] [u|1492] vfs.file.time[/etc/passwd,modify] [u|1642002666] vfs.file.exists[/etc/passwd] [u|1] vfs.file.contents[/etc/passwd] [t|root:x:0:0:root:/root:/bin/bash bin:x:1:1:bin:/bin:/sbin/nologin daemon:x:2:2:daemon:/sbin:/sbin/nologin adm:x:3:4:adm:/var/adm:/sbin/nologin lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin sync:x:5:0:sync:/sbin:/bin/sync shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown halt:x:7:0:halt:/sbin:/sbin/halt mail:x:8:12:mail:/var/spool/mail:/sbin/nologin operator:x:11:0:operator:/root:/sbin/nologin games:x:12:100:games:/usr/games:/sbin/nologin ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin nobody:x:65534:65534:Kernel Overflow User:/:/sbin/nologin dbus:x:81:81:System message bus:/:/sbin/nologin systemd-coredump:x:999:997:systemd Core Dumper:/:/sbin/nologin systemd-resolve:x:193:193:systemd Resolver:/:/sbin/nologin tss:x:59:59:Account used for TPM access:/dev/null:/sbin/nologin polkitd:x:998:996:User for polkitd:/:/sbin/nologin rpc:x:32:32:Rpcbind Daemon:/var/lib/rpcbind:/sbin/nologin unbound:x:997:994:Unbound DNS resolver:/etc/unbound:/sbin/nologin sssd:x:996:993:User for sssd:/:/sbin/nologin rpcuser:x:29:29:RPC Service User:/var/lib/nfs:/sbin/nologin chrony:x:995:992::/var/lib/chrony:/sbin/nologin sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin vfs.file.regexp[/etc/passwd,root] [s|root:x:0:0:root:/root:/bin/bash] vfs.file.regmatch[/etc/passwd,root] [u|1] vfs.file.md5sum[/etc/passwd] [s|2270abc4f93fec72906439ab74e88da1] vfs.file.cksum[/etc/passwd] [u|1365968972] zabbix_agentd [2766619]: ERROR: Got signal [signal:11(SIGSEGV),reason:1,refaddr:0xe5]. Crashing ... zabbix_agentd [2766619]: ERROR: ====== Fatal information: ====== zabbix_agentd [2766619]: ERROR: Program counter: 0x7f481465fbd0 zabbix_agentd [2766619]: ERROR: === Registers: === zabbix_agentd [2766619]: ERROR: r8 = 7f481513e540 = 139947567998272 = 139947567998272 zabbix_agentd [2766619]: ERROR: r9 = 0 = 0 = 0 zabbix_agentd [2766619]: ERROR: r10 = 0 = 0 = 0 zabbix_agentd [2766619]: ERROR: r11 = 246 = 582 = 582 zabbix_agentd [2766619]: ERROR: r12 = 23f9070 = 37720176 = 37720176 zabbix_agentd [2766619]: ERROR: r13 = 7f481513e330 = 139947567997744 = 139947567997744 zabbix_agentd [2766619]: ERROR: r14 = 7ffe4c31e880 = 140730176759936 = 140730176759936 zabbix_agentd [2766619]: ERROR: r15 = 23f946f = 37721199 = 37721199 zabbix_agentd [2766619]: ERROR: rdi = 23f9070 = 37720176 = 37720176 zabbix_agentd [2766619]: ERROR: rsi = 7f481513e521 = 139947567998241 = 139947567998241 zabbix_agentd [2766619]: ERROR: rbp = 400 = 1024 = 1024 zabbix_agentd [2766619]: ERROR: rbx = 23f9070 = 37720176 = 37720176 zabbix_agentd [2766619]: ERROR: rdx = 72 = 114 = 114 zabbix_agentd [2766619]: ERROR: rax = 23f47c8 = 37701576 = 37701576 zabbix_agentd [2766619]: ERROR: rcx = 0 = 0 = 0 zabbix_agentd [2766619]: ERROR: rsp = 7ffe4c31e830 = 140730176759856 = 140730176759856 zabbix_agentd [2766619]: ERROR: rip = 7f481465fbd0 = 139947556600784 = 139947556600784 zabbix_agentd [2766619]: ERROR: efl = 10203 = 66051 = 66051 zabbix_agentd [2766619]: ERROR: csgsfs = 2b000000000033 = 12103423998558259 = 12103423998558259 zabbix_agentd [2766619]: ERROR: err = 4 = 4 = 4 zabbix_agentd [2766619]: ERROR: trapno = e = 14 = 14 zabbix_agentd [2766619]: ERROR: oldmask = 0 = 0 = 0 zabbix_agentd [2766619]: ERROR: cr2 = e5 = 229 = 229 zabbix_agentd [2766619]: ERROR: === Backtrace: === zabbix_agentd [2766619]: ERROR: 16: [0x42f065] zabbix_agentd [2766619]: ERROR: 15: [0x42f37d] zabbix_agentd [2766619]: ERROR: 14: [0x42f9d6] zabbix_agentd [2766619]: ERROR: 13: [0x49bf20] zabbix_agentd [2766619]: ERROR: 12: /lib64/libnss_files.so.2(+0x8bd0) [0x7f481465fbd0] zabbix_agentd [2766619]: ERROR: 11: /lib64/libnss_files.so.2(+0x5c1f) [0x7f481465cc1f] zabbix_agentd [2766619]: ERROR: 10: /lib64/libnss_files.so.2(_nss_files_getpwuid_r+0x93) [0x7f481465cff3] zabbix_agentd [2766619]: ERROR: 9: [0x50a1e4] zabbix_agentd [2766619]: ERROR: 8: [0x509c5c] zabbix_agentd [2766619]: ERROR: 7: [0x428184] zabbix_agentd [2766619]: ERROR: 6: [0x413e7d] zabbix_agentd [2766619]: ERROR: 5: [0x41423f] zabbix_agentd [2766619]: ERROR: 4: [0x414488] zabbix_agentd [2766619]: ERROR: 3: [0x40232e] zabbix_agentd [2766619]: ERROR: 2: [0x4a2354] zabbix_agentd [2766619]: ERROR: 1: [0x4a25d1] zabbix_agentd [2766619]: ERROR: 0: [0x402636] zabbix_agentd [2766619]: ERROR: === Memory map: === zabbix_agentd [2766619]: ERROR: 00400000-005be000 r-xp 00000000 09:7e 3221663881 /usr/local/sbin/zabbix_agentd zabbix_agentd [2766619]: ERROR: 007be000-007c2000 rw-p 001be000 09:7e 3221663881 /usr/local/sbin/zabbix_agentd zabbix_agentd [2766619]: ERROR: 007c2000-007cb000 rw-p 00000000 00:00 0 zabbix_agentd [2766619]: ERROR: 023f4000-02417000 rw-p 00000000 00:00 0 [heap] zabbix_agentd [2766619]: ERROR: 7f4814657000-7f4814662000 r-xp 00000000 09:7e 1073752935 /usr/lib64/libnss_files-2.28.so zabbix_agentd [2766619]: ERROR: 7f4814662000-7f4814862000 ---p 0000b000 09:7e 1073752935 /usr/lib64/libnss_files-2.28.so zabbix_agentd [2766619]: ERROR: 7f4814862000-7f4814863000 r--p 0000b000 09:7e 1073752935 /usr/lib64/libnss_files-2.28.so zabbix_agentd [2766619]: ERROR: 7f4814863000-7f4814864000 rw-p 0000c000 09:7e 1073752935 /usr/lib64/libnss_files-2.28.so zabbix_agentd [2766619]: ERROR: 7f4814864000-7f481486a000 rw-p 00000000 00:00 0 zabbix_agentd [2766619]: ERROR: 7f481486a000-7f481513e000 r--s 00000000 09:7e 825874 /var/lib/sss/mc/passwd zabbix_agentd [2766619]: ERROR: 7f481513e000-7f481523e000 rw-p 00000000 00:00 0 zabbix_agentd [2766619]: ERROR: 7f481523e000-7f481526a000 r-xp 00000000 09:7e 1073752916 /usr/lib64/ld-2.28.so zabbix_agentd [2766619]: ERROR: 7f481526a000-7f481546a000 ---p 0002c000 09:7e 1073752916 /usr/lib64/ld-2.28.so zabbix_agentd [2766619]: ERROR: 7f481546a000-7f481546b000 r--p 0002c000 09:7e 1073752916 /usr/lib64/ld-2.28.so zabbix_agentd [2766619]: ERROR: 7f481546b000-7f481546d000 rw-p 0002d000 09:7e 1073752916 /usr/lib64/ld-2.28.so zabbix_agentd [2766619]: ERROR: 7f481546d000-7f4815629000 r-xp 00000000 09:7e 1073752923 /usr/lib64/libc-2.28.so zabbix_agentd [2766619]: ERROR: 7f4815629000-7f4815828000 ---p 001bc000 09:7e 1073752923 /usr/lib64/libc-2.28.so zabbix_agentd [2766619]: ERROR: 7f4815828000-7f481582c000 r--p 001bb000 09:7e 1073752923 /usr/lib64/libc-2.28.so zabbix_agentd [2766619]: ERROR: 7f481582c000-7f481582e000 rw-p 001bf000 09:7e 1073752923 /usr/lib64/libc-2.28.so zabbix_agentd [2766619]: ERROR: 7f481582e000-7f4815832000 rw-p 00000000 00:00 0 zabbix_agentd [2766619]: ERROR: 7f4815832000-7f481583c000 r-xp 00000000 09:7e 1074110072 /usr/lib64/libnss_sss.so.2 zabbix_agentd [2766619]: ERROR: 7f481583c000-7f4815a3b000 ---p 0000a000 09:7e 1074110072 /usr/lib64/libnss_sss.so.2 zabbix_agentd [2766619]: ERROR: 7f4815a3b000-7f4815a3c000 r--p 00009000 09:7e 1074110072 /usr/lib64/libnss_sss.so.2 zabbix_agentd [2766619]: ERROR: 7f4815a3c000-7f4815a3d000 rw-p 0000a000 09:7e 1074110072 /usr/lib64/libnss_sss.so.2 zabbix_agentd [2766619]: ERROR: 7f4815a41000-7f4815a43000 rw-p 00000000 00:00 0 zabbix_agentd [2766619]: ERROR: 7ffe4c301000-7ffe4c322000 rw-p 00000000 00:00 0 [stack] zabbix_agentd [2766619]: ERROR: 7ffe4c384000-7ffe4c388000 r--p 00000000 00:00 0 [vvar] zabbix_agentd [2766619]: ERROR: 7ffe4c388000-7ffe4c38a000 r-xp 00000000 00:00 0 [vdso] zabbix_agentd [2766619]: ERROR: ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall] zabbix_agentd [2766619]: ERROR: ================================ zabbix_agentd [2766619]: ERROR: Please consider attaching a disassembly listing to your bug report. zabbix_agentd [2766619]: ERROR: This listing can be produced with, e.g., objdump -DSswx zabbix_agentd. zabbix_agentd [2766619]: ERROR: ================================
gdb says:
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff6c15bd0 in __nss_readline (fp=0x7ffff76f4330, buf=0x7d00b0 "root:x:0:0:root:/root:/bin/bash\n", len=<optimized out>, poffset=0x7fffffffd6e0)
at ./nss_readline.c:68
68 while (isspace (*p))
(gdb) print *p
$1 = 114 'r'
/usr/local/sbin/zabbix_agentd -V zabbix_agentd (daemon) (Zabbix) 6.2.9 Revision 886cdd0ada3 27 March 2023, compilation time: Mar 27 2023 17:41:12
This on CentOS Linux release 8.4.2105