[CentOS] rare but repeating system crash in C7

Hi all, I'm hoping someone can help me figure this out.

every now and then (less than monthly, maybe every 2-4 months, or so, I'll walk up to my C7 box (my home PC) in the morning, wiggle the mouse to wake up the screen, and after a second or so, instead of a live screen, the keyboard shift-lock and scroll-lock keys light up. if I wait a few (tens of) second(s) I find it is rebooting, as the BIOS splash screen appears. it boots normally and comes up with everything apparently working fine.

Note that I tend to leave myself logged in 24/7/365 since there's nobody here except my wife and myself, and she has her own Linux box.

as it happened again this morning, I grabbed some lines from /var/log/messages that show the last few minutes before it rebooted and the first 3 or four statements as it began to reboot:

Jan 2 08:50:12 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2cb10 trb-start 00000000a9f2cb20 trb-end 00000000a9f2cb20 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 08:50:13 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 08:50:13 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000164858d0 trb-start 00000000164858e0 trb-end 00000000164858e0 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 08:51:12 fcshome dbus[1192]: [system] Activating service name='org.fedoraproject.Setroubleshootd' (using servicehelper) Jan 2 08:51:13 fcshome dbus[1192]: [system] Successfully activated service 'org.fedoraproject.Setroubleshootd' Jan 2 08:51:14 fcshome setroubleshoot: SELinux is preventing /usr/sbin/smbd from read access on the sock_file cups.sock. For complete SELinux messages run: sealert -l e4620dcc-6cdc-460d-a8a4-db9ce9624646 Jan 2 08:51:14 fcshome python: SELinux is preventing /usr/sbin/smbd from read access on the sock_file cups.sock.#012#012***** Plugin catchall (100. confidence) suggests **************************#012#012If you believe that smbd should be allowed read access on the cups.sock sock_file by default.#012Then you should report this as a bug.#012You can generate a local policy module to allow this access.#012Do#012allow this access for now by executing:#012# ausearch -c 'lpqd' --raw | audit2allow -M my-lpqd#012# semodule -i my-lpqd.pp#012 Jan 2 08:55:11 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 08:55:11 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 0000000016485d20 trb-start 0000000016485d30 trb-end 0000000016485d30 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 08:55:11 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 08:55:11 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2cae0 trb-start 00000000a9f2caf0 trb-end 00000000a9f2caf0 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 08:58:00 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 08:58:00 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2c530 trb-start 00000000a9f2c540 trb-end 00000000a9f2c540 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 08:59:51 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 08:59:51 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2c340 trb-start 00000000a9f2c350 trb-end 00000000a9f2c350 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 08:59:51 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 08:59:51 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2cfb0 trb-start 00000000a9f2cfc0 trb-end 00000000a9f2cfc0 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 09:00:02 fcshome systemd: Created slice User Slice of root. Jan 2 09:00:02 fcshome systemd: Started Session 7364 of user root. Jan 2 09:00:02 fcshome systemd: Removed slice User Slice of root. Jan 2 09:00:06 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:00:06 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2cd20 trb-start 00000000a9f2cd30 trb-end 00000000a9f2cd30 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 09:00:59 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:00:59 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 0000000016485400 trb-start 0000000016485410 trb-end 0000000016485410 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 09:00:59 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:00:59 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2cbc0 trb-start 00000000a9f2cbd0 trb-end 00000000a9f2cbd0 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 09:00:59 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:00:59 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 0000000016485c00 trb-start 0000000016485c10 trb-end 0000000016485c10 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 09:01:01 fcshome systemd: Created slice User Slice of root. Jan 2 09:01:01 fcshome systemd: Started Session 7365 of user root. Jan 2 09:01:01 fcshome systemd: Removed slice User Slice of root. Jan 2 09:03:45 fcshome dbus[1192]: [system] Activating service name='org.fedoraproject.Setroubleshootd' (using servicehelper) Jan 2 09:03:46 fcshome dbus[1192]: [system] Successfully activated service 'org.fedoraproject.Setroubleshootd' Jan 2 09:03:47 fcshome setroubleshoot: SELinux is preventing /usr/sbin/smbd from read access on the sock_file cups.sock. For complete SELinux messages run: sealert -l e4620dcc-6cdc-460d-a8a4-db9ce9624646 Jan 2 09:03:47 fcshome python: SELinux is preventing /usr/sbin/smbd from read access on the sock_file cups.sock.#012#012***** Plugin catchall (100. confidence) suggests **************************#012#012If you believe that smbd should be allowed read access on the cups.sock sock_file by default.#012Then you should report this as a bug.#012You can generate a local policy module to allow this access.#012Do#012allow this access for now by executing:#012# ausearch -c 'lpqd' --raw | audit2allow -M my-lpqd#012# semodule -i my-lpqd.pp#012 Jan 2 09:04:31 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:04:31 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2ca60 trb-start 00000000a9f2ca70 trb-end 00000000a9f2ca70 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 09:04:58 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:04:58 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2cd70 trb-start 00000000a9f2cd80 trb-end 00000000a9f2cd80 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 09:04:59 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:04:59 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 0000000016485b30 trb-start 0000000016485b40 trb-end 0000000016485b40 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 09:04:59 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:04:59 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000164856c0 trb-start 00000000164856d0 trb-end 00000000164856d0 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 09:05:03 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:05:03 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000164851b0 trb-start 00000000164851c0 trb-end 00000000164851c0 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 09:10:01 fcshome systemd: Created slice User Slice of root. Jan 2 09:10:01 fcshome systemd: Started Session 7366 of user root. Jan 2 09:10:01 fcshome systemd: Removed slice User Slice of root. Jan 2 09:10:30 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:10:30 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000164854c0 trb-start 00000000164854d0 trb-end 00000000164854d0 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 09:10:30 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:10:30 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 0000000016485eb0 trb-start 0000000016485ec0 trb-end 0000000016485ec0 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 09:11:55 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:11:55 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000164852c0 trb-start 00000000164852d0 trb-end 00000000164852d0 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 09:11:55 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:11:55 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 0000000016485b70 trb-start 0000000016485b80 trb-end 0000000016485b80 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 09:11:56 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:11:56 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2cbb0 trb-start 00000000a9f2cbc0 trb-end 00000000a9f2cbc0 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 09:11:56 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:11:56 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000164858d0 trb-start 00000000164858e0 trb-end 00000000164858e0 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 09:11:56 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:11:56 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 0000000016485a00 trb-start 0000000016485a10 trb-end 0000000016485a10 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 09:14:46 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:14:46 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 0000000016485450 trb-start 0000000016485460 trb-end 0000000016485460 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 09:15:09 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:15:09 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2c170 trb-start 00000000a9f2c180 trb-end 00000000a9f2c180 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 09:15:09 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:15:09 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2c7a0 trb-start 00000000a9f2c7b0 trb-end 00000000a9f2c7b0 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 09:15:10 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:15:10 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 0000000016485560 trb-start 0000000016485570 trb-end 0000000016485570 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 09:15:21 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:15:21 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 0000000016485b90 trb-start 0000000016485ba0 trb-end 0000000016485ba0 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 09:15:21 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:15:21 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2cf90 trb-start 00000000a9f2cfa0 trb-end 00000000a9f2cfa0 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 09:15:22 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:15:22 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2c9e0 trb-start 00000000a9f2c9f0 trb-end 00000000a9f2c9f0 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 09:15:22 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:15:22 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 0000000016485660 trb-start 0000000016485670 trb-end 0000000016485670 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 09:15:23 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:15:23 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 0000000016485330 trb-start 0000000016485340 trb-end 0000000016485340 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 09:15:24 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:15:24 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 0000000016485500 trb-start 0000000016485510 trb-end 0000000016485510 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 09:15:25 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:15:25 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2c400 trb-start 00000000a9f2c410 trb-end 00000000a9f2c410 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 09:15:25 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:15:25 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000164851c0 trb-start 00000000164851d0 trb-end 00000000164851d0 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 09:15:26 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:15:26 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 0000000016485e30 trb-start 0000000016485e40 trb-end 0000000016485e40 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 09:15:26 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:15:26 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2cbf0 trb-start 00000000a9f2cc00 trb-end 00000000a9f2cc00 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 09:15:26 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:15:26 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2c000 trb-start 00000000a9f2c010 trb-end 00000000a9f2c010 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 09:15:27 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:15:27 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2ce50 trb-start 00000000a9f2ce60 trb-end 00000000a9f2ce60 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 09:15:31 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:15:31 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2c4e0 trb-start 00000000a9f2c4f0 trb-end 00000000a9f2c4f0 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 09:15:47 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:15:47 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2cbb0 trb-start 00000000a9f2cbc0 trb-end 00000000a9f2cbc0 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 09:16:15 fcshome dbus[1192]: [system] Activating service name='org.fedoraproject.Setroubleshootd' (using servicehelper) Jan 2 09:16:16 fcshome dbus[1192]: [system] Successfully activated service 'org.fedoraproject.Setroubleshootd' Jan 2 09:16:17 fcshome setroubleshoot: SELinux is preventing /usr/sbin/smbd from read access on the sock_file cups.sock. For complete SELinux messages run: sealert -l e4620dcc-6cdc-460d-a8a4-db9ce9624646 Jan 2 09:16:17 fcshome python: SELinux is preventing /usr/sbin/smbd from read access on the sock_file cups.sock.#012#012***** Plugin catchall (100. confidence) suggests **************************#012#012If you believe that smbd should be allowed read access on the cups.sock sock_file by default.#012Then you should report this as a bug.#012You can generate a local policy module to allow this access.#012Do#012allow this access for now by executing:#012# ausearch -c 'lpqd' --raw | audit2allow -M my-lpqd#012# semodule -i my-lpqd.pp#012 Jan 2 09:17:11 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:17:11 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 0000000016485b50 trb-start 0000000016485b60 trb-end 0000000016485b60 seg-start 0000000016485000 seg-end 0000000016485ff0 Jan 2 09:17:11 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:17:11 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2c050 trb-start 00000000a9f2c060 trb-end 00000000a9f2c060 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 09:17:11 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:17:11 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2c680 trb-start 00000000a9f2c690 trb-end 00000000a9f2c690 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 09:17:11 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:17:11 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2cb70 trb-start 00000000a9f2cb80 trb-end 00000000a9f2cb80 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 09:17:21 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:17:21 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2c520 trb-start 00000000a9f2c530 trb-end 00000000a9f2c530 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 09:17:21 fcshome kernel: xhci_hcd 0000:03:00.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 8 comp_code 13 Jan 2 09:17:21 fcshome kernel: xhci_hcd 0000:03:00.0: Looking for event-dma 00000000a9f2ca10 trb-start 00000000a9f2ca20 trb-end 00000000a9f2ca20 seg-start 00000000a9f2c000 seg-end 00000000a9f2cff0 Jan 2 09:20:11 fcshome kernel: Initializing cgroup subsys cpuset Jan 2 09:20:11 fcshome kernel: Initializing cgroup subsys cpu Jan 2 09:20:11 fcshome kernel: Initializing cgroup subsys cpuacct Jan 2 09:20:11 fcshome kernel: Linux version 3.10.0-1160.6.1.el7.x86_64

The last four events are the start of reboot and everything above is leading up to the crash.

I note that there was a selinux event early in this list of events, but I see those frequently and they normally don't cause a crash. if I scroll upward from this list, I find more of the same above what is shown here.

The selinux event seems to be related to a SMB mount. since I have a Synology box on the LAN, and it stays mounted nearly all the time, I suspect the selinux event has something to do with that, but I have no idea why it would cause a crash once every few months. Is that selinux event something I need to fix?

I'm further guessing that "xhci_hcd" has something to do with USB, am I right? If so I don't know what it would be...

Clues would be greatly appreciated!

Thanks in advance!

Fred