Alert in Ancient Javanese

gaia · **Joined:** Tue Jun 09, 2009 12:57 pm **Posts:** 134

Sorry, I got an OSSECS alert that goes "kernel: JBD: barrier-based sync failed on vda1-8 - disabling barriers". Do I need to be concerned? Barriers seem like a good idea, as data security is more important than performance in my case.

thanks

faris · **Joined:** Thu Dec 09, 2004 11:19 am **Posts:** 1846

This appears to be related to the filesystem and and does not appear to be security related.

It is reported as a bug in certain OSes on certain forums according to Google, but that not may be what's triggering your error.

Check the output of dmesg to see if there's more info there.

gaia · **Joined:** Tue Jun 09, 2009 12:57 pm **Posts:** 134

faris wrote:

This appears to be related to the filesystem and and does not appear to be security related.

I said "security" because from what I gather barriers are a question of drive performance vs. data security.

faris wrote:

It is reported as a bug in certain OSes on certain forums according to Google, but that not may be what's triggering your error.

Check the output of dmesg to see if there's more info there.

Thanks. Here is the -200 tail of dmesg:

Code:

PAX: bytes at SP-8: 0000730cf1809820 0000000000400cca 0000000000000000 0000000000000001 0000000000000000 0000000000400b20 000074558b71e810 0000000000400ef1 0000730cf200c700 0000000000000000 0000000000000000 
PAX: execution attempt in: <anonymous mapping>, 72ef91318000-72ef9132d000 7ffffffea000
PAX: terminating task: /usr/libexec/paxtest/mprotstack(mprotstack):3892, uid/euid: 0/0, PC: 000072ef9132bea0, SP: 000072ef9132be98
PAX: bytes at PC: c3 bf 32 91 ef 72 00 00 00 00 00 00 00 00 00 00 01 00 00 00 
PAX: bytes at SP-8: 0000000000400840 0000000000400afd 000072ef9132bfc3 0000000000000000 0000000000000001 0000000000400ab1 00006466468aa700 0000000000000000 0000000000000000 00006466468c9cdd 0000000000000000 
PAX: execution attempt in: /usr/libexec/paxtest/shlibtest2.so, 6dac28810000-6dac28812000 00000000
PAX: terminating task: /usr/libexec/paxtest/shlibbss(shlibbss):4109, uid/euid: 0/0, PC: 00006dac28811840, SP: 00007d7d081e79b8
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 00006dac28e454e8 0000000000400e70 0000000000000000 0000000000000001 0000000000000000 0000000000400b30 00007d7d081e7ae0 0000000000400da1 00006dac2807b700 0000000000000000 0000000000000000 
PAX: execution attempt in: /usr/libexec/paxtest/shlibtest2.so, 762ffe0b6000-762ffe0b8000 00000000
PAX: terminating task: /usr/libexec/paxtest/shlibdata(shlibdata):4116, uid/euid: 0/0, PC: 0000762ffe0b6820, SP: 00007b25b056e258
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 0000762ffe6eb4e8 0000000000400e70 0000000000000000 0000000000000001 0000000000000000 0000000000400b30 00007b25b056e380 0000000000400da1 0000762ffd921700 0000000000000000 0000000000000000 
PAX: execution attempt in: <anonymous mapping>, 795501d04000-795501d07000 795501d04000
PAX: terminating task: /usr/libexec/paxtest/anonmap(anonmap):12802, uid/euid: 0/0, PC: 0000795501d04000, SP: 00007d976c271028
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 000000000000000f 0000000000400bde 0000000000000000 0000000000400b81 000079550153c700 0000000000000000 0000000000000000 000079550155bcdd 0000000000000000 00007d976c271138 0000000100000000 
grsec: denied resource overstep by requesting 4096 for RLIMIT_CORE against limit 0 for /usr/libexec/paxtest/anonmap[anonmap:12802] uid/euid:0/0 gid/egid:0/0, parent /usr/libexec/paxtest/anonmap[anonmap:12801] uid/euid:0/0 gid/egid:0/0
PAX: execution attempt in: /usr/libexec/paxtest/execbss, 00601000-00602000 00001000
PAX: terminating task: /usr/libexec/paxtest/execbss(execbss):12809, uid/euid: 0/0, PC: 0000000000601288, SP: 00007264da7b3f58
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 6f 21 8c 
PAX: bytes at SP-8: 00007264da7b4060 0000000000400af0 0000000000000000 0000000000400ab1 000065294975c700 0000000000000000 0000000000000000 000065294977bcdd 0000000000000000 00007264da7b4068 0000000100000000 
grsec: denied resource overstep by requesting 4096 for RLIMIT_CORE against limit 0 for /usr/libexec/paxtest/execbss[execbss:12809] uid/euid:0/0 gid/egid:0/0, parent /usr/libexec/paxtest/execbss[execbss:12808] uid/euid:0/0 gid/egid:0/0
PAX: execution attempt in: /usr/libexec/paxtest/execdata, 00601000-00602000 00001000
PAX: terminating task: /usr/libexec/paxtest/execdata(execdata):12816, uid/euid: 0/0, PC: 0000000000601264, SP: 0000747199ad9d48
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 80 87 a5 e3 04 6a 00 00 
PAX: bytes at SP-8: 0000747199ad9e50 0000000000400af0 0000000000000000 0000000000400ab1 00006a04e36cd700 0000000000000000 0000000000000000 00006a04e36eccdd 0000000000000000 0000747199ad9e58 0000000100000000 
grsec: denied resource overstep by requesting 4096 for RLIMIT_CORE against limit 0 for /usr/libexec/paxtest/execdata[execdata:12816] uid/euid:0/0 gid/egid:0/0, parent /usr/libexec/paxtest/execdata[execdata:12815] uid/euid:0/0 gid/egid:0/0
PAX: execution attempt in: <anonymous mapping>, 00b39000-00b5b000 00b39000
PAX: terminating task: /usr/libexec/paxtest/execheap(execheap):12823, uid/euid: 0/0, PC: 0000000000b39660, SP: 00007f8cdc31ff58
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 0000000000400910 0000000000400bc8 0000000000000000 0000000000400b81 000074f05e962700 0000000000000000 0000000000000000 000074f05e981cdd 0000000000000000 00007f8cdc320068 0000000100000000 
grsec: denied resource overstep by requesting 4096 for RLIMIT_CORE against limit 0 for /usr/libexec/paxtest/execheap[execheap:12823] uid/euid:0/0 gid/egid:0/0, parent /usr/libexec/paxtest/execheap[execheap:12822] uid/euid:0/0 gid/egid:0/0
PAX: execution attempt in: <anonymous mapping>, 798010106000-79801011b000 7ffffffea000
PAX: terminating task: /usr/libexec/paxtest/execstack(execstack):12830, uid/euid: 0/0, PC: 00007980101186a0, SP: 0000798010118698
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 0000000000000000 0000000000400aed 00000000000000c3 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 
grsec: denied resource overstep by requesting 4096 for RLIMIT_CORE against limit 0 for /usr/libexec/paxtest/execstack[execstack:12830] uid/euid:0/0 gid/egid:0/0, parent /usr/libexec/paxtest/execstack[execstack:12829] uid/euid:0/0 gid/egid:0/0
PAX: execution attempt in: <anonymous mapping>, 773812c13000-773812c16000 773812c13000
PAX: terminating task: /usr/libexec/paxtest/mprotanon(mprotanon):12837, uid/euid: 0/0, PC: 0000773812c13000, SP: 00007872243fd748
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 0000000000400910 0000000000400bf0 0000000000000001 0000000000400b81 000077381244b700 0000000000000000 0000000000000000 000077381246acdd 0000000000000000 00007872243fd858 0000000100000000 
grsec: more alerts, logging disabled for 10 seconds
PAX: execution attempt in: /usr/libexec/paxtest/mprotbss, 00601000-00602000 00001000
PAX: terminating task: /usr/libexec/paxtest/mprotbss(mprotbss):12844, uid/euid: 0/0, PC: 0000000000601288, SP: 00007c2c13edf9b8
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 6f 21 8c 
PAX: bytes at SP-8: 0000000000400840 0000000000400b04 0000000000000000 0000000000400ab1 00006dd1c8283700 0000000000000000 0000000000000000 00006dd1c82a2cdd 0000000000000000 00007c2c13edfac8 0000000100000000 
PAX: execution attempt in: /usr/libexec/paxtest/mprotdata, 00601000-00602000 00001000
PAX: terminating task: /usr/libexec/paxtest/mprotdata(mprotdata):12852, uid/euid: 0/0, PC: 0000000000601264, SP: 00007ad75cc56928
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 80 87 48 cc 66 74 00 00 
PAX: bytes at SP-8: 0000000000400840 0000000000400b04 0000000000000000 0000000000400ab1 00007466cc0fd700 0000000000000000 0000000000000000 00007466cc11ccdd 0000000000000000 00007ad75cc56a38 0000000100000000 
PAX: execution attempt in: <anonymous mapping>, 02a2c000-02a4e000 02a2c000
PAX: terminating task: /usr/libexec/paxtest/mprotheap(mprotheap):12861, uid/euid: 0/0, PC: 0000000002a2c820, SP: 00007c607b435a28
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 0000000000400910 0000000000400bda 0000000000000001 0000000000400b81 0000769cfdac4700 0000000000000000 0000000000000000 0000769cfdae3cdd 0000000000000000 00007c607b435b38 0000000100000000 
PAX: execution attempt in: /usr/libexec/paxtest/shlibtest2.so, 641b96742000-641b96744000 00000000
PAX: terminating task: /usr/libexec/paxtest/mprotshbss(mprotshbss):12868, uid/euid: 0/0, PC: 0000641b96743840, SP: 000070309c23c038
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 0000641b96743840 0000000000400cca 0000000000000000 0000000000000001 0000000000000000 0000000000400b20 000070309c23c160 0000000000400ef1 0000641b96f45700 0000000000000000 0000000000000000 
PAX: execution attempt in: /usr/libexec/paxtest/shlibtest2.so, 6ab9a07b3000-6ab9a07b5000 00000000
PAX: terminating task: /usr/libexec/paxtest/mprotshdata(mprotshdata):12875, uid/euid: 0/0, PC: 00006ab9a07b3820, SP: 00007362b7282e28
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 00006ab9a07b3820 0000000000400cca 0000000000000000 0000000000000001 0000000000000000 0000000000400b20 00007362b7282f50 0000000000400ef1 00006ab9a0fb6700 0000000000000000 0000000000000000 
PAX: execution attempt in: <anonymous mapping>, 75535adfe000-75535ae13000 7ffffffea000
PAX: terminating task: /usr/libexec/paxtest/mprotstack(mprotstack):12882, uid/euid: 0/0, PC: 000075535ae11db0, SP: 000075535ae11da8
PAX: bytes at PC: c3 1e e1 5a 53 75 00 00 00 00 00 00 00 00 00 00 01 00 00 00 
PAX: bytes at SP-8: 0000000000400840 0000000000400afd 000075535ae11ec3 0000000000000000 0000000000000001 0000000000400ab1 000074745dcca700 0000000000000000 0000000000000000 000074745dce9cdd 0000000000000000 
PAX: execution attempt in: /usr/libexec/paxtest/shlibtest2.so, 6cc319883000-6cc319885000 00000000
PAX: terminating task: /usr/libexec/paxtest/shlibbss(shlibbss):13100, uid/euid: 0/0, PC: 00006cc319884840, SP: 00007bb313c62a98
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 00006cc319eb84e8 0000000000400e70 0000000000000000 0000000000000001 0000000000000000 0000000000400b30 00007bb313c62bc0 0000000000400da1 00006cc3190ee700 0000000000000000 0000000000000000 
PAX: execution attempt in: /usr/libexec/paxtest/shlibtest2.so, 7a347aec0000-7a347aec2000 00000000
PAX: terminating task: /usr/libexec/paxtest/shlibdata(shlibdata):13107, uid/euid: 0/0, PC: 00007a347aec0820, SP: 00007b9a36db4798
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 00007a347b4f54e8 0000000000400e70 0000000000000000 0000000000000001 0000000000000000 0000000000400b30 00007b9a36db48c0 0000000000400da1 00007a347a72b700 0000000000000000 0000000000000000 
JBD: barrier-based sync failed on vda1-8 - disabling barriers
PAX: execution attempt in: <anonymous mapping>, 6e8d27295000-6e8d27298000 6e8d27295000
PAX: terminating task: /usr/libexec/paxtest/anonmap(anonmap):16841, uid/euid: 0/0, PC: 00006e8d27295000, SP: 00007278c17c1618
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 000000000000000f 0000000000400bde 0000000000000000 0000000000400b81 00006e8d26acd700 0000000000000000 0000000000000000 00006e8d26aeccdd 0000000000000000 00007278c17c1728 0000000100000000 
grsec: denied resource overstep by requesting 4096 for RLIMIT_CORE against limit 0 for /usr/libexec/paxtest/anonmap[anonmap:16841] uid/euid:0/0 gid/egid:0/0, parent /usr/libexec/paxtest/anonmap[anonmap:16840] uid/euid:0/0 gid/egid:0/0
PAX: execution attempt in: /usr/libexec/paxtest/execbss, 00601000-00602000 00001000
PAX: terminating task: /usr/libexec/paxtest/execbss(execbss):16848, uid/euid: 0/0, PC: 0000000000601288, SP: 00007406a7117ba8
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 6f 21 8c 
PAX: bytes at SP-8: 00007406a7117cb0 0000000000400af0 0000000000000000 0000000000400ab1 000068906479d700 0000000000000000 0000000000000000 00006890647bccdd 0000000000000000 00007406a7117cb8 0000000100000000 
grsec: denied resource overstep by requesting 4096 for RLIMIT_CORE against limit 0 for /usr/libexec/paxtest/execbss[execbss:16848] uid/euid:0/0 gid/egid:0/0, parent /usr/libexec/paxtest/execbss[execbss:16847] uid/euid:0/0 gid/egid:0/0
PAX: execution attempt in: /usr/libexec/paxtest/execdata, 00601000-00602000 00001000
PAX: terminating task: /usr/libexec/paxtest/execdata(execdata):16855, uid/euid: 0/0, PC: 0000000000601264, SP: 0000787a7a698d38
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 80 27 b6 b8 69 6a 00 00 
PAX: bytes at SP-8: 0000787a7a698e40 0000000000400af0 0000000000000000 0000000000400ab1 00006a69b87d7700 0000000000000000 0000000000000000 00006a69b87f6cdd 0000000000000000 0000787a7a698e48 0000000100000000 
grsec: denied resource overstep by requesting 4096 for RLIMIT_CORE against limit 0 for /usr/libexec/paxtest/execdata[execdata:16855] uid/euid:0/0 gid/egid:0/0, parent /usr/libexec/paxtest/execdata[execdata:16854] uid/euid:0/0 gid/egid:0/0
PAX: execution attempt in: <anonymous mapping>, 0334d000-0336f000 0334d000
PAX: terminating task: /usr/libexec/paxtest/execheap(execheap):16862, uid/euid: 0/0, PC: 000000000334db50, SP: 000070dddf7bbaa8
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 0000000000400910 0000000000400bc8 0000000000000000 0000000000400b81 000060d8d3e38700 0000000000000000 0000000000000000 000060d8d3e57cdd 0000000000000000 000070dddf7bbbb8 0000000100000000 
grsec: denied resource overstep by requesting 4096 for RLIMIT_CORE against limit 0 for /usr/libexec/paxtest/execheap[execheap:16862] uid/euid:0/0 gid/egid:0/0, parent /usr/libexec/paxtest/execheap[execheap:16861] uid/euid:0/0 gid/egid:0/0
PAX: execution attempt in: <anonymous mapping>, 7da143276000-7da14328b000 7ffffffea000
PAX: terminating task: /usr/libexec/paxtest/execstack(execstack):16869, uid/euid: 0/0, PC: 00007da143288b20, SP: 00007da143288b18
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 0000000000000000 0000000000400aed 00000000000000c3 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 
grsec: denied resource overstep by requesting 4096 for RLIMIT_CORE against limit 0 for /usr/libexec/paxtest/execstack[execstack:16869] uid/euid:0/0 gid/egid:0/0, parent /usr/libexec/paxtest/execstack[execstack:16868] uid/euid:0/0 gid/egid:0/0
PAX: execution attempt in: <anonymous mapping>, 6eee98bb5000-6eee98bb8000 6eee98bb5000
PAX: terminating task: /usr/libexec/paxtest/mprotanon(mprotanon):16876, uid/euid: 0/0, PC: 00006eee98bb5000, SP: 00007b98293168c8
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 0000000000400910 0000000000400bf0 0000000000000001 0000000000400b81 00006eee983ed700 0000000000000000 0000000000000000 00006eee9840ccdd 0000000000000000 00007b98293169d8 0000000100000000 
grsec: more alerts, logging disabled for 10 seconds
PAX: execution attempt in: /usr/libexec/paxtest/mprotbss, 00601000-00602000 00001000
PAX: terminating task: /usr/libexec/paxtest/mprotbss(mprotbss):16883, uid/euid: 0/0, PC: 0000000000601288, SP: 00007c94eff77948
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 6f 21 8c 
PAX: bytes at SP-8: 0000000000400840 0000000000400b04 0000000000000000 0000000000400ab1 0000731efb2f8700 0000000000000000 0000000000000000 0000731efb317cdd 0000000000000000 00007c94eff77a58 0000000100000000 
PAX: execution attempt in: /usr/libexec/paxtest/mprotdata, 00601000-00602000 00001000
PAX: terminating task: /usr/libexec/paxtest/mprotdata(mprotdata):16890, uid/euid: 0/0, PC: 0000000000601264, SP: 00007d5715ef6dd8
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 80 67 55 7c ec 6d 00 00 
PAX: bytes at SP-8: 0000000000400840 0000000000400b04 0000000000000000 0000000000400ab1 00006dec7c1cb700 0000000000000000 0000000000000000 00006dec7c1eacdd 0000000000000000 00007d5715ef6ee8 0000000100000000 
PAX: execution attempt in: <anonymous mapping>, 04137000-04159000 04137000
PAX: terminating task: /usr/libexec/paxtest/mprotheap(mprotheap):16897, uid/euid: 0/0, PC: 0000000004137c20, SP: 000073894c059508
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 0000000000400910 0000000000400bda 0000000000000001 0000000000400b81 00007091fbf0c700 0000000000000000 0000000000000000 00007091fbf2bcdd 0000000000000000 000073894c059618 0000000100000000 
PAX: execution attempt in: /usr/libexec/paxtest/shlibtest2.so, 7a48c6834000-7a48c6836000 00000000
PAX: terminating task: /usr/libexec/paxtest/mprotshbss(mprotshbss):16904, uid/euid: 0/0, PC: 00007a48c6835840, SP: 00007b85389f0cc8
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 00007a48c6835840 0000000000400cca 0000000000000000 0000000000000001 0000000000000000 0000000000400b20 00007b85389f0df0 0000000000400ef1 00007a48c7037700 0000000000000000 0000000000000000 
PAX: execution attempt in: /usr/libexec/paxtest/shlibtest2.so, 7302efb1a000-7302efb1c000 00000000
PAX: terminating task: /usr/libexec/paxtest/mprotshdata(mprotshdata):16911, uid/euid: 0/0, PC: 00007302efb1a820, SP: 00007fbef35a4b08
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 00007302efb1a820 0000000000400cca 0000000000000000 0000000000000001 0000000000000000 0000000000400b20 00007fbef35a4c30 0000000000400ef1 00007302f031d700 0000000000000000 0000000000000000 
PAX: execution attempt in: <anonymous mapping>, 7efbd9c0a000-7efbd9c1f000 7ffffffea000
PAX: terminating task: /usr/libexec/paxtest/mprotstack(mprotstack):16918, uid/euid: 0/0, PC: 00007efbd9c1e530, SP: 00007efbd9c1e528
PAX: bytes at PC: c3 e6 c1 d9 fb 7e 00 00 00 00 00 00 00 00 00 00 01 00 00 00 
PAX: bytes at SP-8: 0000000000400840 0000000000400afd 00007efbd9c1e6c3 0000000000000000 0000000000000001 0000000000400ab1 00007acf2f200700 0000000000000000 0000000000000000 00007acf2f21fcdd 0000000000000000 
PAX: execution attempt in: /usr/libexec/paxtest/shlibtest2.so, 6e84a14f2000-6e84a14f4000 00000000
PAX: terminating task: /usr/libexec/paxtest/shlibbss(shlibbss):17135, uid/euid: 0/0, PC: 00006e84a14f3840, SP: 00007bd154c237a8
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 00006e84a1b274e8 0000000000400e70 0000000000000000 0000000000000001 0000000000000000 0000000000400b30 00007bd154c238d0 0000000000400da1 00006e84a0d5d700 0000000000000000 0000000000000000 
PAX: execution attempt in: /usr/libexec/paxtest/shlibtest2.so, 67c71d310000-67c71d312000 00000000
PAX: terminating task: /usr/libexec/paxtest/shlibdata(shlibdata):17142, uid/euid: 0/0, PC: 000067c71d310820, SP: 0000717ba06df208
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 000067c71d9454e8 0000000000400e70 0000000000000000 0000000000000001 0000000000000000 0000000000400b30 0000717ba06df330 0000000000400da1 000067c71cb7b700 0000000000000000 0000000000000000 
PAX: execution attempt in: <anonymous mapping>, 6782c1717000-6782c171a000 6782c1717000
PAX: terminating task: /usr/libexec/paxtest/anonmap(anonmap):21057, uid/euid: 0/0, PC: 00006782c1717000, SP: 000072b5f528b4c8
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 000000000000000f 0000000000400bde 0000000000000000 0000000000400b81 00006782c0f4f700 0000000000000000 0000000000000000 00006782c0f6ecdd 0000000000000000 000072b5f528b5d8 0000000100000000 
grsec: denied resource overstep by requesting 4096 for RLIMIT_CORE against limit 0 for /usr/libexec/paxtest/anonmap[anonmap:21057] uid/euid:0/0 gid/egid:0/0, parent /usr/libexec/paxtest/anonmap[anonmap:21056] uid/euid:0/0 gid/egid:0/0
PAX: execution attempt in: /usr/libexec/paxtest/execbss, 00601000-00602000 00001000
PAX: terminating task: /usr/libexec/paxtest/execbss(execbss):21064, uid/euid: 0/0, PC: 0000000000601288, SP: 000074dcada74a78
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 6f 21 8c 
PAX: bytes at SP-8: 000074dcada74b80 0000000000400af0 0000000000000000 0000000000400ab1 00006a60d1115700 0000000000000000 0000000000000000 00006a60d1134cdd 0000000000000000 000074dcada74b88 0000000100000000 
grsec: denied resource overstep by requesting 4096 for RLIMIT_CORE against limit 0 for /usr/libexec/paxtest/execbss[execbss:21064] uid/euid:0/0 gid/egid:0/0, parent /usr/libexec/paxtest/execbss[execbss:21063] uid/euid:0/0 gid/egid:0/0
PAX: execution attempt in: /usr/libexec/paxtest/execdata, 00601000-00602000 00001000
PAX: terminating task: /usr/libexec/paxtest/execdata(execdata):21071, uid/euid: 0/0, PC: 0000000000601264, SP: 00007378c41d4428
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 80 87 61 b2 32 68 00 00 
PAX: bytes at SP-8: 00007378c41d4530 0000000000400af0 0000000000000000 0000000000400ab1 00006832b228d700 0000000000000000 0000000000000000 00006832b22accdd 0000000000000000 00007378c41d4538 0000000100000000 
grsec: denied resource overstep by requesting 4096 for RLIMIT_CORE against limit 0 for /usr/libexec/paxtest/execdata[execdata:21071] uid/euid:0/0 gid/egid:0/0, parent /usr/libexec/paxtest/execdata[execdata:21070] uid/euid:0/0 gid/egid:0/0
PAX: execution attempt in: <anonymous mapping>, 00d22000-00d44000 00d22000
PAX: terminating task: /usr/libexec/paxtest/execheap(execheap):21078, uid/euid: 0/0, PC: 0000000000d22eb0, SP: 000071d0ba6ec138
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 0000000000400910 0000000000400bc8 0000000000000000 0000000000400b81 00006658bf010700 0000000000000000 0000000000000000 00006658bf02fcdd 0000000000000000 000071d0ba6ec248 0000000100000000 
grsec: denied resource overstep by requesting 4096 for RLIMIT_CORE against limit 0 for /usr/libexec/paxtest/execheap[execheap:21078] uid/euid:0/0 gid/egid:0/0, parent /usr/libexec/paxtest/execheap[execheap:21077] uid/euid:0/0 gid/egid:0/0
PAX: execution attempt in: <anonymous mapping>, 7c5d291ae000-7c5d291c3000 7ffffffea000
PAX: terminating task: /usr/libexec/paxtest/execstack(execstack):21085, uid/euid: 0/0, PC: 00007c5d291bfdb0, SP: 00007c5d291bfda8
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 0000000000000000 0000000000400aed 00000000000000c3 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 
grsec: denied resource overstep by requesting 4096 for RLIMIT_CORE against limit 0 for /usr/libexec/paxtest/execstack[execstack:21085] uid/euid:0/0 gid/egid:0/0, parent /usr/libexec/paxtest/execstack[execstack:21084] uid/euid:0/0 gid/egid:0/0
PAX: execution attempt in: <anonymous mapping>, 6bfbc3e77000-6bfbc3e7a000 6bfbc3e77000
PAX: terminating task: /usr/libexec/paxtest/mprotanon(mprotanon):21092, uid/euid: 0/0, PC: 00006bfbc3e77000, SP: 000072a482c38348
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 0000000000400910 0000000000400bf0 0000000000000001 0000000000400b81 00006bfbc36af700 0000000000000000 0000000000000000 00006bfbc36cecdd 0000000000000000 000072a482c38458 0000000100000000 
grsec: more alerts, logging disabled for 10 seconds
PAX: execution attempt in: /usr/libexec/paxtest/mprotbss, 00601000-00602000 00001000
PAX: terminating task: /usr/libexec/paxtest/mprotbss(mprotbss):21099, uid/euid: 0/0, PC: 0000000000601288, SP: 00007e10473ba828
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 6f 21 8c 
PAX: bytes at SP-8: 0000000000400840 0000000000400b04 0000000000000000 0000000000400ab1 0000743a0fb98700 0000000000000000 0000000000000000 0000743a0fbb7cdd 0000000000000000 00007e10473ba938 0000000100000000 
PAX: execution attempt in: /usr/libexec/paxtest/mprotdata, 00601000-00602000 00001000
PAX: terminating task: /usr/libexec/paxtest/mprotdata(mprotdata):21106, uid/euid: 0/0, PC: 0000000000601264, SP: 000072483fc15318
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 80 c7 28 46 4e 6c 00 00 
PAX: bytes at SP-8: 0000000000400840 0000000000400b04 0000000000000000 0000000000400ab1 00006c4e45f01700 0000000000000000 0000000000000000 00006c4e45f20cdd 0000000000000000 000072483fc15428 0000000100000000 
PAX: execution attempt in: <anonymous mapping>, 03adc000-03afe000 03adc000
PAX: terminating task: /usr/libexec/paxtest/mprotheap(mprotheap):21113, uid/euid: 0/0, PC: 0000000003add050, SP: 00007ae4ecca9928
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 0000000000400910 0000000000400bda 0000000000000001 0000000000400b81 000078fdc5293700 0000000000000000 0000000000000000 000078fdc52b2cdd 0000000000000000 00007ae4ecca9a38 0000000100000000 
PAX: execution attempt in: /usr/libexec/paxtest/shlibtest2.so, 77f178474000-77f178476000 00000000
PAX: terminating task: /usr/libexec/paxtest/mprotshbss(mprotshbss):21120, uid/euid: 0/0, PC: 000077f178475840, SP: 00007fbc7f393ec8
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 000077f178475840 0000000000400cca 0000000000000000 0000000000000001 0000000000000000 0000000000400b20 00007fbc7f393ff0 0000000000400ef1 000077f178c77700 0000000000000000 0000000000000000 
PAX: execution attempt in: /usr/libexec/paxtest/shlibtest2.so, 687ab4b0b000-687ab4b0d000 00000000
PAX: terminating task: /usr/libexec/paxtest/mprotshdata(mprotshdata):21127, uid/euid: 0/0, PC: 0000687ab4b0b820, SP: 00007467989c1988
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 0000687ab4b0b820 0000000000400cca 0000000000000000 0000000000000001 0000000000000000 0000000000400b20 00007467989c1ab0 0000000000400ef1 0000687ab530e700 0000000000000000 0000000000000000 
PAX: execution attempt in: <anonymous mapping>, 75fa11b75000-75fa11b8a000 7ffffffea000
PAX: terminating task: /usr/libexec/paxtest/mprotstack(mprotstack):21134, uid/euid: 0/0, PC: 000075fa11b89620, SP: 000075fa11b89618
PAX: bytes at PC: c3 97 b8 11 fa 75 00 00 00 00 00 00 00 00 00 00 01 00 00 00 
PAX: bytes at SP-8: 0000000000400840 0000000000400afd 000075fa11b897c3 0000000000000000 0000000000000001 0000000000400ab1 00006eb1b8182700 0000000000000000 0000000000000000 00006eb1b81a1cdd 0000000000000000 
PAX: execution attempt in: /usr/libexec/paxtest/shlibtest2.so, 66d78b3c4000-66d78b3c6000 00000000
PAX: terminating task: /usr/libexec/paxtest/shlibbss(shlibbss):21351, uid/euid: 0/0, PC: 000066d78b3c5840, SP: 00007627f8f5a818
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 000066d78b9f94e8 0000000000400e70 0000000000000000 0000000000000001 0000000000000000 0000000000400b30 00007627f8f5a940 0000000000400da1 000066d78ac2f700 0000000000000000 0000000000000000 
PAX: execution attempt in: /usr/libexec/paxtest/shlibtest2.so, 6e408b87d000-6e408b87f000 00000000
PAX: terminating task: /usr/libexec/paxtest/shlibdata(shlibdata):21358, uid/euid: 0/0, PC: 00006e408b87d820, SP: 00007bd7ea42cf98
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 00006e408beb24e8 0000000000400e70 0000000000000000 0000000000000001 0000000000000000 0000000000400b30 00007bd7ea42d0c0 0000000000400da1 00006e408b0e8700 0000000000000000 0000000000000000 

faris · **Joined:** Thu Dec 09, 2004 11:19 am **Posts:** 1846

I'll let someone else comment on the output you posted as it isn't something I'm familiar with I'm afraid :-(

mikeshinn · **Posted:** Mon Jun 25, 2012 6:29 pm

Please see the FAQ:

https://www.atomicorp.com/wiki/index.ph ... st_mean.3F

gaia · **Joined:** Tue Jun 09, 2009 12:57 pm **Posts:** 134

mikeshinn wrote:

Please see the FAQ:

https://www.atomicorp.com/wiki/index.ph ... st_mean.3F

I only posted the entire log for context. The OP states that the concern is related to "barriers disabled", and the relevant section of the log is:

Code:

JBD: barrier-based sync failed on vda1-8 - disabling barriers
PAX: execution attempt in: <anonymous mapping>, 6e8d27295000-6e8d27298000 6e8d27295000
PAX: terminating task: /usr/libexec/paxtest/anonmap(anonmap):16841, uid/euid: 0/0, PC: 00006e8d27295000, SP: 00007278c17c1618
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
PAX: bytes at SP-8: 000000000000000f 0000000000400bde 0000000000000000 0000000000400b81 00006e8d26acd700 0000000000000000 0000000000000000 00006e8d26aeccdd 0000000000000000 00007278c17c1728 0000000100000000 

does the FAQ still apply?

scott · **Posted:** Tue Jun 26, 2012 12:28 pm

Nope, totally unrelated events

gaia · **Joined:** Tue Jun 09, 2009 12:57 pm **Posts:** 134

scott wrote:

Nope, totally unrelated events

so what do I do now?

thanks

mikeshinn · **Posted:** Tue Jun 26, 2012 1:08 pm

Yes the FAQ applies for the PAX messages because this:

Quote:

JBD: barrier-based sync failed on vda1-8 - disabling barriers

Has nothing to do with this

Quote:

PAX: execution attempt in: <anonymous mapping>, 6e8d27295000-6e8d27298000 6e8d27295000
PAX: terminating task: /usr/libexec/paxtest/anonmap(anonmap):16841, uid/euid: 0/0, PC: 00006e8d27295000, SP: 00007278c17c1618
PAX: bytes at PC: c3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
PAX: bytes at SP-8: 000000000000000f 0000000000400bde 0000000000000000 0000000000400b81 00006e8d26acd700 0000000000000000 0000000000000000 00006e8d26aeccdd 0000000000000000 00007278c17c1728 0000000100000000

That error:

Quote:

JBD: barrier-based sync failed on vda1-8 - disabling barriers

Is a filesystem error message, it means you have a problem with the filesystem (its not a security event). Are these ext4 filesystems by any chance, or are ext4 filesystem being used to store your virtual drives?

gaia · **Joined:** Tue Jun 09, 2009 12:57 pm **Posts:** 134

mikeshinn wrote:

That error:

Quote:

JBD: barrier-based sync failed on vda1-8 - disabling barriers

Is a filesystem error, it means you have a problem with the filesystem (its not a security event). Are these ext4 filesystems by any chance, or are ext4 filesystem being used to store your virtual drives?

Code:

df -T
Filesystem    Type   1K-blocks      Used Available Use% Mounted on
/dev/mapper/vg_centos62-lv_root
              ext4    19775972   9200652   9575388  50% /
tmpfs        tmpfs     3320220         0   3320220   0% /dev/shm
/dev/vda1     ext4      495844     92058    378186  20% /boot

The host has the raw files mounted on LVM.

mikeshinn · **Posted:** Tue Jun 26, 2012 1:45 pm

So from your error, this is the file system you are getting errors for:

/dev/vda1 ext4 495844 92058 378186 20% /boot

Which is ext4. One solution is to disable barriers, edit grub.conf or menu.lst and pass the following parameter to your kernel:

barrier=off

https://docs.redhat.com/docs/en-US/Red_ ... onoff.html

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