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/freebsd-10.3-release/sys/fs/procfs/
H A Dprocfs.hdiff 8740 Thu May 25 01:35:24 MDT 1995 dg Fixed panic that resulted from mmaping files in kernfs and procfs. A
regular user could panic the machine with a simple "tail /proc/curproc/mem"
command. The problem was twofold: both kernfs and procfs didn't fill in
the mnt_stat statfs struct (which would later lead to an integer divide
fault in the vnode pager), and kernfs bogusly paniced if a bmap was
attempted.

Reviewed by: John Dyson

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