On 8/5/2014 9:47 PM, Bryan Drewery wrote:
Has anyone else encountered this? Got it while running poudriere.

NULL mp in getnewvnode()
[...]
vn_fullpath1() at vn_fullpath1+0x19d/frame 0xfffffe1247d8e540
vn_fullpath() at vn_fullpath+0xc1/frame 0xfffffe1247d8e590
export_fd_to_sb() at export_fd_to_sb+0x489/frame 0xfffffe1247d8e7c0
kern_proc_filedesc_out() at kern_proc_filedesc_out+0x234/frame
0xfffffe1247d8e840
sysctl_kern_proc_filedesc() at sysctl_kern_proc_filedesc+0x84/frame
0xfffffe1247d8e900
sysctl_root_handler_locked() at sysctl_root_handler_locked+0x68/frame
0xfffffe1247d8e940
sysctl_root() at sysctl_root+0x18e/frame 0xfffffe1247d8e990
userland_sysctl() at userland_sysctl+0x192/frame 0xfffffe1247d8ea30
sys___sysctl() at sys___sysctl+0x74/frame 0xfffffe1247d8eae0
amd64_syscall() at amd64_syscall+0x25a/frame 0xfffffe1247d8ebf0
Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe1247d8ebf0

Unfortunately I have no dump as the kmem was too large compared to my
swap, and I didn't get to the console before some of the text was
overwritten. Perhaps it will hit it again soon after reboot and I'll get
a core.


It's quite possible that something was unmounting or even mounting during this call resulting in a race. I was doing 2 separate builds at once.

--
Regards,
Bryan Drewery
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