My distro (ArchLinux) has recently updated to gssproxy 0.6.1. Ever since then, I get a SIGABRT due to a libc double free or corruption immediately when trying to access my NFS share. I confirmed by downgrading to 0.5.1 that the crash does not happen there. I can try to bisect the commit if it helps.
Log with backtrace:
(gdb) run Starting program: /root/gss-proxy/proxy/gssproxy -i -d -d -d -d [Thread debugging using libthread_db enabled] Using host libthread_db library "/usr/lib/libthread_db.so.1". [2017/01/24 17:52:45]: Debug Enabled (level: 0) [New Thread 0x7ffff4b26700 (LWP 29995)] [New Thread 0x7ffff4325700 (LWP 29996)] [New Thread 0x7ffff3b24700 (LWP 29997)] [New Thread 0x7ffff3323700 (LWP 29998)] [New Thread 0x7ffff2b22700 (LWP 29999)] [2017/01/24 17:52:45]: Failed to get peer's SELinux context (95:Die Operation wird nicht unterstützt) [2017/01/24 17:52:45]: Client connected (fd = 9)[2017/01/24 17:52:45]: (pid = 29991) (uid = 0) (gid = 0)[2017/01/24 17:52:45]: [2017/01/24 17:52:58]: gp_rpc_execute: executing 9 (GSSX_ACCEPT_SEC_CONTEXT) for service "nfs-server", euid: 0,socket: /run/gssproxy.sock *** Error in `/root/gss-proxy/proxy/gssproxy': double free or corruption (out): 0x00007fffec000c10 *** ======= Backtrace: ========= /usr/lib/libc.so.6(+0x70c4b)[0x7ffff60bdc4b] /usr/lib/libc.so.6(+0x76fe6)[0x7ffff60c3fe6] /usr/lib/libc.so.6(+0x777de)[0x7ffff60c47de] /root/gss-proxy/proxy/gssproxy(+0x5a1d)[0x555555559a1d] /root/gss-proxy/proxy/gssproxy(+0x97d8)[0x55555555d7d8] /root/gss-proxy/proxy/gssproxy(+0x133f6)[0x5555555673f6] /root/gss-proxy/proxy/gssproxy(+0xfb53)[0x555555563b53] /root/gss-proxy/proxy/gssproxy(+0x8b6b)[0x55555555cb6b] /usr/lib/libpthread.so.0(+0x7454)[0x7ffff63f2454] /usr/lib/libc.so.6(clone+0x5f)[0x7ffff61357df] ======= Memory map: ======== 555555554000-55555556f000 r-xp 00000000 fe:00 3171840 /root/gss-proxy/proxy/gssproxy 55555576f000-555555770000 r--p 0001b000 fe:00 3171840 /root/gss-proxy/proxy/gssproxy 555555770000-555555771000 rw-p 0001c000 fe:00 3171840 /root/gss-proxy/proxy/gssproxy 555555771000-5555557b3000 rw-p 00000000 00:00 0 [heap] 7fffec000000-7fffec021000 rw-p 00000000 00:00 0 7fffec021000-7ffff0000000 ---p 00000000 00:00 0 7ffff1ef1000-7ffff1f07000 r-xp 00000000 fe:00 6557303 /usr/lib/libgcc_s.so.1 7ffff1f07000-7ffff2106000 ---p 00016000 fe:00 6557303 /usr/lib/libgcc_s.so.1 7ffff2106000-7ffff2107000 r--p 00015000 fe:00 6557303 /usr/lib/libgcc_s.so.1 7ffff2107000-7ffff2108000 rw-p 00016000 fe:00 6557303 /usr/lib/libgcc_s.so.1 7ffff2108000-7ffff2121000 r-xp 00000000 fe:00 6815920 /usr/lib/gssproxy/proxymech.so 7ffff2121000-7ffff2320000 ---p 00019000 fe:00 6815920 /usr/lib/gssproxy/proxymech.so 7ffff2320000-7ffff2321000 r--p 00018000 fe:00 6815920 /usr/lib/gssproxy/proxymech.so 7ffff2321000-7ffff2322000 rw-p 00019000 fe:00 6815920 /usr/lib/gssproxy/proxymech.so 7ffff2322000-7ffff2323000 ---p 00000000 00:00 0 7ffff2323000-7ffff2b23000 rw-p 00000000 00:00 0 7ffff2b23000-7ffff2b24000 ---p 00000000 00:00 0 7ffff2b24000-7ffff3324000 rw-p 00000000 00:00 0 7ffff3324000-7ffff3325000 ---p 00000000 00:00 0 7ffff3325000-7ffff3b25000 rw-p 00000000 00:00 0 7ffff3b25000-7ffff3b26000 ---p 00000000 00:00 0 7ffff3b26000-7ffff4326000 rw-p 00000000 00:00 0 7ffff4326000-7ffff4327000 ---p 00000000 00:00 0 7ffff4327000-7ffff4b27000 rw-p 00000000 00:00 0 7ffff4b27000-7ffff5107000 r--p 00000000 fe:00 6957420 /usr/lib/locale/locale-archive 7ffff5107000-7ffff5111000 r-xp 00000000 fe:00 6572845 /usr/lib/libnss_files-2.24.so 7ffff5111000-7ffff5311000 ---p 0000a000 fe:00 6572845 /usr/lib/libnss_files-2.24.so 7ffff5311000-7ffff5312000 r--p 0000a000 fe:00 6572845 /usr/lib/libnss_files-2.24.so 7ffff5312000-7ffff5313000 rw-p 0000b000 fe:00 6572845 /usr/lib/libnss_files-2.24.so 7ffff5313000-7ffff5319000 rw-p 00000000 00:00 0 7ffff5319000-7ffff531b000 r-xp 00000000 fe:00 6571924 /usr/lib/libdl-2.24.so 7ffff531b000-7ffff551b000 ---p 00002000 fe:00 6571924 /usr/lib/libdl-2.24.so 7ffff551b000-7ffff551c000 r--p 00002000 fe:00 6571924 /usr/lib/libdl-2.24.so 7ffff551c000-7ffff551d000 rw-p 00003000 fe:00 6571924 /usr/lib/libdl-2.24.so 7ffff551d000-7ffff5520000 r-xp 00000000 fe:00 6572982 /usr/lib/libpath_utils.so.1.0.1 7ffff5520000-7ffff571f000 ---p 00003000 fe:00 6572982 /usr/lib/libpath_utils.so.1.0.1 7ffff571f000-7ffff5720000 r--p 00002000 fe:00 6572982 /usr/lib/libpath_utils.so.1.0.1 7ffff5720000-7ffff5721000 rw-p 00003000 fe:00 6572982 /usr/lib/libpath_utils.so.1.0.1 7ffff5721000-7ffff5824000 r-xp 00000000 fe:00 6572684 /usr/lib/libm-2.24.so 7ffff5824000-7ffff5a23000 ---p 00103000 fe:00 6572684 /usr/lib/libm-2.24.so 7ffff5a23000-7ffff5a24000 r--p 00102000 fe:00 6572684 /usr/lib/libm-2.24.so 7ffff5a24000-7ffff5a25000 rw-p 00103000 fe:00 6572684 /usr/lib/libm-2.24.so 7ffff5a25000-7ffff5a39000 r-xp 00000000 fe:00 6573169 /usr/lib/libresolv-2.24.so 7ffff5a39000-7ffff5c38000 ---p 00014000 fe:00 6573169 /usr/lib/libresolv-2.24.so 7ffff5c38000-7ffff5c39000 r--p 00013000 fe:00 6573169 /usr/lib/libresolv-2.24.so 7ffff5c39000-7ffff5c3a000 rw-p 00014000 fe:00 6573169 /usr/lib/libresolv-2.24.so 7ffff5c3a000-7ffff5c3c000 rw-p 00000000 00:00 0 7ffff5c3c000-7ffff5c3f000 r-xp 00000000 fe:00 6572493 /usr/lib/libkeyutils.so.1.5 7ffff5c3f000-7ffff5e3e000 ---p 00003000 fe:00 6572493 /usr/lib/libkeyutils.so.1.5 7ffff5e3e000-7ffff5e3f000 r--p 00002000 fe:00 6572493 /usr/lib/libkeyutils.so.1.5 7ffff5e3f000-7ffff5e40000 rw-p 00003000 fe:00 6572493 /usr/lib/libkeyutils.so.1.5 7ffff5e40000-7ffff5e4c000 r-xp 00000000 fe:00 6572529 /usr/lib/libkrb5support.so.0.1 7ffff5e4c000-7ffff604b000 ---p 0000c000 fe:00 6572529 /usr/lib/libkrb5support.so.0.1 7ffff604b000-7ffff604c000 r--p 0000b000 fe:00 6572529 /usr/lib/libkrb5support.so.0.1 7ffff604c000-7ffff604d000 rw-p 0000c000 fe:00 6572529 /usr/lib/libkrb5support.so.0.1 7ffff604d000-7ffff61e2000 r-xp 00000000 fe:00 6571734 /usr/lib/libc-2.24.so 7ffff61e2000-7ffff63e1000 ---p 00195000 fe:00 6571734 /usr/lib/libc-2.24.so 7ffff63e1000-7ffff63e5000 r--p 00194000 fe:00 6571734 /usr/lib/libc-2.24.so 7ffff63e5000-7ffff63e7000 rw-p 00198000 fe:00 6571734 /usr/lib/libc-2.24.so 7ffff63e7000-7ffff63eb000 rw-p 00000000 00:00 0 7ffff63eb000-7ffff6403000 r-xp 00000000 fe:00 6573094 /usr/lib/libpthread-2.24.so 7ffff6403000-7ffff6602000 ---p 00018000 fe:00 6573094 /usr/lib/libpthread-2.24.so 7ffff6602000-7ffff6603000 r--p 00017000 fe:00 6573094 /usr/lib/libpthread-2.24.so 7ffff6603000-7ffff6604000 rw-p 00018000 fe:00 6573094 /usr/lib/libpthread-2.24.so 7ffff6604000-7ffff6608000 rw-p 00000000 00:00 0 7ffff6608000-7ffff6652000 r-xp 00000000 fe:00 6572245 /usr/lib/libgssapi_krb5.so.2.2 7ffff6652000-7ffff6852000 ---p 0004a000 fe:00 6572245 /usr/lib/libgssapi_krb5.so.2.2 7ffff6852000-7ffff6854000 r--p 0004a000 fe:00 6572245 /usr/lib/libgssapi_krb5.so.2.2 7ffff6854000-7ffff6856000 rw-p 0004c000 fe:00 6572245 /usr/lib/libgssapi_krb5.so.2.2 7ffff6856000-7ffff6875000 r-xp 00000000 fe:00 6572248 /usr/lib/libgssrpc.so.4.2 7ffff6875000-7ffff6a74000 ---p 0001f000 fe:00 6572248 /usr/lib/libgssrpc.so.4.2 7ffff6a74000-7ffff6a75000 r--p 0001e000 fe:00 6572248 /usr/lib/libgssrpc.so.4.2 7ffff6a75000-7ffff6a76000 rw-p 0001f000 fe:00 6572248 /usr/lib/libgssrpc.so.4.2 7ffff6a76000-7ffff6a82000 r-xp 00000000 fe:00 6571847 /usr/lib/libcollection.so.4.1.0 7ffff6a82000-7ffff6c81000 ---p 0000c000 fe:00 6571847 /usr/lib/libcollection.so.4.1.0 7ffff6c81000-7ffff6c82000 r--p 0000b000 fe:00 6571847 /usr/lib/libcollection.so.4.1.0 7ffff6c82000-7ffff6c83000 rw-p 0000c000 fe:00 6571847 /usr/lib/libcollection.so.4.1.0 7ffff6c83000-7ffff6c85000 r-xp 00000000 fe:00 6573164 /usr/lib/libref_array.so.1.2.1 7ffff6c85000-7ffff6e84000 ---p 00002000 fe:00 6573164 /usr/lib/libref_array.so.1.2.1 7ffff6e84000-7ffff6e85000 r--p 00001000 fe:00 6573164 /usr/lib/libref_array.so.1.2.1 7ffff6e85000-7ffff6e86000 rw-p 00002000 fe:00 6573164 /usr/lib/libref_array.so.1.2.1 7ffff6e86000-7ffff6e87000 r-xp 00000000 fe:00 6571633 /usr/lib/libbasicobjects.so.0.1.0 7ffff6e87000-7ffff7087000 ---p 00001000 fe:00 6571633 /usr/lib/libbasicobjects.so.0.1.0 7ffff7087000-7ffff7088000 r--p 00001000 fe:00 6571633 /usr/lib/libbasicobjects.so.0.1.0 7ffff7088000-7ffff7089000 rw-p 00002000 fe:00 6571633 /usr/lib/libbasicobjects.so.0.1.0 7ffff7089000-7ffff70a2000 r-xp 00000000 fe:00 6572410 /usr/lib/libini_config.so.5.2.0 7ffff70a2000-7ffff72a1000 ---p 00019000 fe:00 6572410 /usr/lib/libini_config.so.5.2.0 7ffff72a1000-7ffff72a2000 r--p 00018000 fe:00 6572410 /usr/lib/libini_config.so.5.2.0 7ffff72a2000-7ffff72a3000 rw-p 00019000 fe:00 6572410 /usr/lib/libini_config.so.5.2.0 7ffff72a3000-7ffff72b2000 r-xp 00000000 fe:00 6573473 /usr/lib/libverto.so.0.0 7ffff72b2000-7ffff74b1000 ---p 0000f000 fe:00 6573473 /usr/lib/libverto.so.0.0 7ffff74b1000-7ffff74b2000 r--p 0000e000 fe:00 6573473 /usr/lib/libverto.so.0.0 7ffff74b2000-7ffff74b3000 rw-p 0000f000 fe:00 6573473 /usr/lib/libverto.so.0.0 7ffff74b3000-7ffff74b6000 r-xp 00000000 fe:00 6571853 /usr/lib/libcom_err.so.2.1 7ffff74b6000-7ffff76b5000 ---p 00003000 fe:00 6571853 /usr/lib/libcom_err.so.2.1 7ffff76b5000-7ffff76b6000 r--p 00002000 fe:00 6571853 /usr/lib/libcom_err.so.2.1 7ffff76b6000-7ffff76b7000 rw-p 00003000 fe:00 6571853 /usr/lib/libcom_err.so.2.1 7ffff76b7000-7ffff76e5000 r-xp 00000000 fe:00 6572455 /usr/lib/libk5crypto.so.3.1 7ffff76e5000-7ffff78e4000 ---p 0002e000 fe:00 6572455 /usr/lib/libk5crypto.so.3.1 7ffff78e4000-7ffff78e6000 r--p 0002d000 fe:00 6572455 /usr/lib/libk5crypto.so.3.1 7ffff78e6000-7ffff78e7000 rw-p 0002f000 fe:00 6572455 /usr/lib/libk5crypto.so.3.1 7ffff78e7000-7ffff78e8000 rw-p 00000000 00:00 0 7ffff78e8000-7ffff79bd000 r-xp 00000000 fe:00 6572528 /usr/lib/libkrb5.so.3.3 7ffff79bd000-7ffff7bbd000 ---p 000d5000 fe:00 6572528 /usr/lib/libkrb5.so.3.3 7ffff7bbd000-7ffff7bca000 r--p 000d5000 fe:00 6572528 /usr/lib/libkrb5.so.3.3 7ffff7bca000-7ffff7bcd000 rw-p 000e2000 fe:00 6572528 /usr/lib/libkrb5.so.3.3 7ffff7bcd000-7ffff7bd8000 r-xp 00000000 fe:00 6573069 /usr/lib/libpopt.so.0.0.0 7ffff7bd8000-7ffff7dd8000 ---p 0000b000 fe:00 6573069 /usr/lib/libpopt.so.0.0.0 7ffff7dd8000-7ffff7dd9000 r--p 0000b000 fe:00 6573069 /usr/lib/libpopt.so.0.0.0 7ffff7dd9000-7ffff7dda000 rw-p 0000c000 fe:00 6573069 /usr/lib/libpopt.so.0.0.0 7ffff7dda000-7ffff7dfd000 r-xp 00000000 fe:00 6571011 /usr/lib/ld-2.24.so 7ffff7f8a000-7ffff7f94000 rw-p 00000000 00:00 0 7ffff7fd1000-7ffff7fd2000 rw-p 00000000 00:00 0 7ffff7fd2000-7ffff7ff8000 r--p 00000000 fe:00 4073176 /usr/share/locale/de/LC_MESSAGES/libc.mo 7ffff7ff8000-7ffff7ffa000 r--p 00000000 00:00 0 [vvar] 7ffff7ffa000-7ffff7ffc000 r-xp 00000000 00:00 0 [vdso] 7ffff7ffc000-7ffff7ffd000 r--p 00022000 fe:00 6571011 /usr/lib/ld-2.24.so 7ffff7ffd000-7ffff7ffe000 rw-p 00023000 fe:00 6571011 /usr/lib/ld-2.24.so 7ffff7ffe000-7ffff7fff000 rw-p 00000000 00:00 0 7ffffffde000-7ffffffff000 rw-p 00000000 00:00 0 [stack] ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall] Thread 6 "gssproxy" received signal SIGABRT, Aborted. [Switching to Thread 0x7ffff2b22700 (LWP 29999)] 0x00007ffff608004f in raise () from /usr/lib/libc.so.6 (gdb) bt #0 0x00007ffff608004f in raise () from /usr/lib/libc.so.6 #1 0x00007ffff608147a in abort () from /usr/lib/libc.so.6 #2 0x00007ffff60bdc50 in __libc_message () from /usr/lib/libc.so.6 #3 0x00007ffff60c3fe6 in malloc_printerr () from /usr/lib/libc.so.6 #4 0x00007ffff60c47de in _int_free () from /usr/lib/libc.so.6 #5 0x0000555555559a1d in free_cred_store_elements (cs=cs@entry=0x7ffff2a21550) at src/gp_config.c:65 #6 0x000055555555d7d8 in gp_add_krb5_creds (min=min@entry=0x7ffff2a21660, gpcall=gpcall@entry=0x7ffff2b21ab0, acquire_type=acquire_type@entry=ACQ_NORMAL, in_cred=in_cred@entry=0x0, desired_name=desired_name@entry=0x0, cred_usage=<optimized out>, cred_usage@entry=2, initiator_time_req=0, acceptor_time_req=0, output_cred_handle=0x7ffff2a21670, actual_mechs=0x0, initiator_time_rec=0x0, acceptor_time_rec=0x0) at src/gp_creds.c:752 #7 0x00005555555673f6 in gp_accept_sec_context (gpcall=0x7ffff2b21ab0, arg=0x7ffff2a21880, res=0x7ffff2a217e0) at src/gp_rpc_accept_sec_context.c:58 #8 0x0000555555563b53 in gp_rpc_execute (res=0x7ffff2a21518, arg=0x7ffff2a21880, proc=32767, gpcall=0x7ffff2b21ab0) at src/gp_rpc_process.c:321 #9 gp_rpc_process_call (gpcall=gpcall@entry=0x7ffff2b21ab0, inbuf=<optimized out>, inlen=<optimized out>, outbuf=0x0, outbuf@entry=0x7ffff2b21aa0, outlen=0x555555559a1d <free_cred_store_elements+61>, outlen@entry=0x7ffff2b21aa8) at src/gp_rpc_process.c:378 #10 0x000055555555cb6b in gp_handle_query (w=<optimized out>, q=0x55555579e800) at src/gp_workers.c:424 #11 gp_worker_main (pvt=0x55555579bda0) at src/gp_workers.c:378 #12 0x00007ffff63f2454 in start_thread () from /usr/lib/libpthread.so.0 #13 0x00007ffff61357df in clone () from /usr/lib/libc.so.6
Metadata Update from @pkerling: - Issue assigned to simo - Issue set to the milestone: 0.0 NEEDS TRIAGE
Metadata Update from @rharwood: - Issue assigned to rharwood (was: simo)
Hi @pkerling, any chance you could check this with v0.6.2? I think I fixed the issue there but I am not sure. Thanks!
Metadata Update from @rharwood: - Issue close_status updated to: None - Issue priority set to: None (was: 2)
Confirmed working in v0.6.2. Much appreciated!
Metadata Update from @pkerling: - Issue close_status updated to: Fixed - Issue status updated to: Closed (was: Open)
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