So, I know this may be the wrong mailing list, well, it is, but I'm a first time user and I don't think I have enough information to open a bug report.
I am trying openbsd 5.5 (current) on an smp amd64 machine. after some late-night experimentations with systrace, I decided that, for untrusted applications, it would be better to have a separate user (let's say temp1). I added, on /etc/rc.local mount_tmpfs -u temp1 -g temp1 -s 8G tmpfs /home/temp1 to recreate the home directory of the user at every startup. I could have done it via fstab, I know. The machine has 16G of ram installed. I was watching a long (1h+) video with "minitube", so data may have been written to /home/temp1, and I had a kernel panic. trace: panic() at panic+0xee amap_wipeout() at amap_wipeout+0xf0 uvm_unmap_detach() at uvm_unmap_detach+0x90 sys_munmap() at sys_munmap+0x120 syscall() at syscall+0x24f end trace frame: 0xffff8000032e23dc0, count: 0 show map: MAP 0xffffffff81345da5: [0x71880c70a74->0x1c2834800000000] brk() allocate range: 0xc3c9df7540fa8348-0x9066666690666666 stack allocate range: 0x53e5894855906666-0x48b486508ec8348 sz=1216454588, ref=838853055, version=2685829333, flags=0x48b48d2 show page: PAGE 0xffffffff81345da5: flags=40fa8348<CLEAN,FAKE,ZERO,FREE,ACTIVE,ENCRYPT,PMAP0>, vers=-1010180235, wire_count=-1872337306, pa=0x53e5894855906666 uobject=0x71880c70a74, uanon=0xc0854881a01680d5, offset=0xc2834800000000 loan_count=-1872337306 [page ownership tracking disabled] wm_page_md 0xffffffff81345e0d I also had show mount, show vnode and registers, but apparently output is truncated... I'm not sure about the cause, but after the panic, every time I ran firefox X froze, I couldn't switch back to a tty and had to perform a hard reset. now I unmounted the tmpfs over /home/temp1 and so far, I had no trouble. I did run tmpfs without problems for some time, without specifiying -s 8G and -u temp1 -g temp1.
