Date: Sun, 30 May 2004 10:30:30 -0400 From: Don Bowman <don@sandvine.com> To: 'Kris Kennaway' <kris@obsecurity.org>, freebsd-current@freebsd.org Subject: RE: crash when bpf is used heavily Message-ID: <FE045D4D9F7AED4CBFF1B3B813C85337051D8DD6@mail.sandvine.com>
next in thread | raw e-mail | index | archive | help
From: Kris Kennaway [mailto:kris@obsecurity.org] > On Sat, May 29, 2004 at 04:03:45PM +0300, Sergey Lyubka wrote: > > > put M_NOWAIT in bpf_allocbufs(). > > Got page fault now. > > panic: kmem_malloc(4098) too small > > That means "You have run out of KVA" and need to reduce the workload, > or retune the kernel memory allocations. The problem the original post has, although on the surface kind of nasty (easily able to panic from user space), can be easily worked around by creating less bpf devices (/dev/bpf0, ... create only 4 of them) and appropriately resizing KVA. If I recall, he had also increased quite dramatically the bpf buffer size. --don
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?FE045D4D9F7AED4CBFF1B3B813C85337051D8DD6>