In Logwatch, I find this message in kernel section. When I see in other days, there is same message but number of times is variable.
Messages log :
Sep 19 07:25:41 kooz2 kernel: [207627.008381] cvm-unix[11711]: segfault at 0 ip 00007fc784368037 sp 00007fffd5e6a1d8 error 4 in libc-2.17.so[7fc784229000+1c4000]
Sep 19 07:25:41 kooz2 kernel: cvm-unix[11711]: segfault at 0 ip 00007fc784368037 sp 00007fffd5e6a1d8 error 4 in libc-2.17.so[7fc784229000+1c4000]
Sep 19 07:48:57 kooz2 systemd-logind: New session 310 of user root.
Sep 19 07:49:27 kooz2 systemd-logind: Removed session 310.
Sep 19 09:13:24 kooz2 kernel: [214090.536537] cvm-unix[12375]: segfault at 0 ip 00007f9071da9037 sp 00007fff9501e6a8 error 4 in libc-2.17.so[7f9071c6a000+1c4000]
Sep 19 09:13:24 kooz2 kernel: cvm-unix[12375]: segfault at 0 ip 00007f9071da9037 sp 00007fff9501e6a8 error 4 in libc-2.17.so[7f9071c6a000+1c4000]
Sep 19 12:09:27 kooz2 kernel: [224653.811437] cvm-unix[12650]: segfault at 0 ip 00007f5cc81d2037 sp 00007ffca03fddd8 error 4 in libc-2.17.so[7f5cc8093000+1c4000]
Sep 19 12:09:27 kooz2 kernel: cvm-unix[12650]: segfault at 0 ip 00007f5cc81d2037 sp 00007ffca03fddd8 error 4 in libc-2.17.so[7f5cc8093000+1c4000]
Sep 19 12:26:42 kooz2 kernel: [225687.995083] cvm-unix[13072]: segfault at 0 ip 00007f3a51b94037 sp 00007fffa722b9b8 error 4 in libc-2.17.so[7f3a51a55000+1c4000]
Sep 19 12:26:42 kooz2 kernel: cvm-unix[13072]: segfault at 0 ip 00007f3a51b94037 sp 00007fffa722b9b8 error 4 in libc-2.17.so[7f3a51a55000+1c4000]
Sep 19 20:37:42 kooz2 kernel: [255149.262905] cvm-unix[13112]: segfault at 0 ip 00007fc4f8905037 sp 00007ffe7e6d0d38 error 4 in libc-2.17.so[7fc4f87c6000+1c4000]
Sep 19 20:37:42 kooz2 kernel: cvm-unix[13112]: segfault at 0 ip 00007fc4f8905037 sp 00007ffe7e6d0d38 error 4 in libc-2.17.so[7fc4f87c6000+1c4000]
Sep 19 21:00:46 kooz2 kernel: [256533.267194] cvm-unix[14210]: segfault at 0 ip 00007f8e298ba037 sp 00007ffea38175a8 error 4 in libc-2.17.so[7f8e2977b000+1c4000]
Sep 19 21:00:46 kooz2 kernel: cvm-unix[14210]: segfault at 0 ip 00007f8e298ba037 sp 00007ffea38175a8 error 4 in libc-2.17.so[7f8e2977b000+1c4000]
Sep 19 21:39:25 kooz2 kernel: [258851.516826] perf: interrupt took too long (3927 > 3925), lowering kernel.perf_event_max_sample_rate to 50000
Sep 19 21:39:25 kooz2 kernel: perf: interrupt took too long (3927 > 3925), lowering kernel.perf_event_max_sample_rate to 50000
Sep 19 23:44:19 kooz2 kernel: [266345.688116] cvm-unix[14272]: segfault at 0 ip 00007f2281063037 sp 00007ffe8b0feb38 error 4 in libc-2.17.so[7f2280f24000+1c4000]
Sep 19 23:44:19 kooz2 kernel: cvm-unix[14272]: segfault at 0 ip 00007f2281063037 sp 00007ffe8b0feb38 error 4 in libc-2.17.so[7f2280f24000+1c4000]
Sep 20 00:39:36 kooz2 kernel: [269663.146172] cvm-unix[14644]: segfault at 0 ip 00007f1272c26037 sp 00007ffffacb2d28 error 4 in libc-2.17.so[7f1272ae7000+1c4000]
Sep 20 00:39:36 kooz2 kernel: cvm-unix[14644]: segfault at 0 ip 00007f1272c26037 sp 00007ffffacb2d28 error 4 in libc-2.17.so[7f1272ae7000+1c4000]
Sep 20 00:52:00 kooz2 kernel: cvm-unix[14822]: segfault at 0 ip 00007f39c419b037 sp 00007ffc0720ba18 error 4 in libc-2.17.so[7f39c405c000+1c4000]
Sep 20 00:52:00 kooz2 kernel: [270407.402441] cvm-unix[14822]: segfault at 0 ip 00007f39c419b037 sp 00007ffc0720ba18 error 4 in libc-2.17.so[7f39c405c000+1c4000]
Sep 20 01:02:27 kooz2 kernel: [271034.544125] cvm-unix[14859]: segfault at 0 ip 00007fb16fcf8037 sp 00007ffec61d6d68 error 4 in libc-2.17.so[7fb16fbb9000+1c4000]
Sep 20 01:02:27 kooz2 kernel: cvm-unix[14859]: segfault at 0 ip 00007fb16fcf8037 sp 00007ffec61d6d68 error 4 in libc-2.17.so[7fb16fbb9000+1c4000]
Sep 20 01:05:52 kooz2 kernel: [271239.144704] cvm-unix[14913]: segfault at 0 ip 00007fbc83285037 sp 00007ffea4f79838 error 4 in libc-2.17.so[7fbc83146000+1c4000]
Sep 20 01:05:52 kooz2 kernel: cvm-unix[14913]: segfault at 0 ip 00007fbc83285037 sp 00007ffea4f79838 error 4 in libc-2.17.so[7fbc83146000+1c4000]
Sep 20 03:21:23 kooz2 kernel: [279369.873252] cvm-unix[14926]: segfault at 0 ip 00007fc384b3d037 sp 00007fff59fe7d28 error 4 in libc-2.17.so[7fc3849fe000+1c4000]
Sep 20 03:21:23 kooz2 kernel: cvm-unix[14926]: segfault at 0 ip 00007fc384b3d037 sp 00007fff59fe7d28 error 4 in libc-2.17.so[7fc3849fe000+1c4000]
Is that normal ?