Messages in this thread | | | Date | Wed, 12 Mar 2003 07:20:39 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: 2.5.63 accesses below %esp (was: Re: ntfs OOPS (2.5.63)) |
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On 12 Mar 2003, Arjan van de Ven wrote: > > and all vendors always ship -fno-frame-pointer kernels so far so those > users are ok! Until recently there was no way to build a non > -fno-frame-pointer kernel!
Not entirely true.
Even with the traditional -fomit-frame-pointer build, "sched.c" has always been built with -fno-fomit-frame-pointer in order to get the correct "wchan" of callers of schedule() and wait_on().
See kernel/Makefile for details.
So yes, old kernels (and CONFIG_FRAME_POINTER=n) have traditionally avoided the bug _mostly_. But it could still bite us in some rather important functions.
Linus
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