svn commit: r198451 - head/sys/ia64/include
M. Warner Losh
imp at bsdimp.com
Tue Oct 27 21:05:11 UTC 2009
In message: <alpine.BSF.2.00.0910250012410.68490 at fledge.watson.org>
Robert Watson <rwatson at FreeBSD.org> writes:
: On Sat, 24 Oct 2009, Marcel Moolenaar wrote:
: > Log:
: > A 32KB kernel stack is not quite enough. The new USB stack is a bit
: > more stack hungry as compared to the old one that my RX2660 gets
: > a machine check and spontaneously reboots at the time the USB DVD
: > drive is found and attached to CAM as a mass storage device. This
: > doesn't happen always, but definitely varies per kernel build.
: > Likewise when using a 128-byte printf buffer. The additional 128
: > bytes that printf needs seems to be enough to have the memory stack
: > and register stack collide and causing a machine check.
: I recently noticed, somewhat to my surprise, that BPF drops a 512-byte buffer
: on the stack while running filters...
Would another pass of huge stack function scrubbing be useful?
More information about the svn-src-head