Hello, I'm running OpenBSD 4.4 release on an i386 machine.
I use a Compact Flash card as hdd. Without manual configuration the bios recognizes it as removable and refuses to boot OpenBSD. The machine is used for nat/filtering + dns server, and do it very well. But, I have noticed something strange with the compact flash. Sometimes, I get this in dmesg : Feb 24 08:12:10 gw-pri-eaubonne /bsd: wd0(pciide0:0:0): timeout Feb 24 08:12:10 gw-pri-eaubonne /bsd: type: ata Feb 24 08:12:11 gw-pri-eaubonne /bsd: c_bcount: 16384 Feb 24 08:12:11 gw-pri-eaubonne /bsd: c_skip: 0 Feb 24 08:12:11 gw-pri-eaubonne /bsd: pciide0:0:0: bus-master DMA error: missing interrupt, status=0x20 Feb 24 08:12:11 gw-pri-eaubonne /bsd: wd0d: device timeout reading fsbn 209760 of 209760-209791 (wd0 bn 604896; cn 75 tn 1 sn 33), retrying Feb 24 08:12:11 gw-pri-eaubonne /bsd: wd0: soft error (corrected) Feb 24 08:12:11 gw-pri-eaubonne savecore: no core dump Feb 24 08:12:12 gw-pri-eaubonne /bsd: wd0: transfer error, downgrading to Ultra-DMA mode 1 Feb 24 08:12:13 gw-pri-eaubonne /bsd: wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 1 Feb 24 08:12:13 gw-pri-eaubonne /bsd: wd0e: aborted command, interface CRC error reading fsbn 466560 of 466560-466591 (wd0 bn 1272960; cn 157 tn 109 sn 45), retrying Feb 24 08:12:13 gw-pri-eaubonne /bsd: wd0: soft error (corrected) However the machine works normally. (And, I have checked the card is correctly plugged in) But, yesterday I have also noticed that I can't use setuid programs : Mar 2 15:02:14 gw-pri-eaubonne su: cannot stat /usr/libexec/auth/login_passwd: Permission denied Mar 2 15:02:14 gw-pri-eaubonne su: /usr/libexec/auth/login_passwd: path not secure After I bit of searching I have seen this mail received from daily insecurity output. Checking setuid/setgid files and devices: Setuid additions: -r-sr-xr-x 1 root bin 157440 Aug 13 00:56:44 2008 /sbin/ping -r-sr-xr-x 1 root bin 182208 Aug 13 00:56:46 2008 /sbin/ping6 [...] ====== /etc/fstab diffs (-OLD +NEW) ====== --- /dev/null Wed Feb 25 01:30:08 2009 +++ /etc/fstab Mon Feb 16 15:32:45 2009 @@ -0,0 +1,5 @@ +/dev/wd0a / ffs rw 1 1 +/dev/wd0f /tmp ffs rw,nodev,nosuid 1 2 +/dev/wd0e /usr/ ffs rw,nodev,nosuid 1 2 +/dev/wd0d /var ffs rw,nodev,nosuid 1 2 +/dev/wd0g /var/tmp ffs rw,nodev,nosuid 1 2 [...] So the system replaced my configuration files and put nosuid on /usr. The modifications that I have done on other configurations files (I haven't touched the fstab since the install) were kept. I have corrected the fstab and it works. But now I have three questions : - Why this happened ? - From where my configuration was restored ? (I don't use altroot) - These warnings in dmesg can be considered harmless ? Thanks for your help. -- Louis Opter - COSE
