Messages in this thread |  | | Date | Sun, 10 Dec 2006 17:45:32 -0800 | From | Jeremy Fitzhardinge <> | Subject | Re: 2.6.19-rc6-mm2 hangs when gdb is run on a multithread program |
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walt wrote: > Jeremy Fitzhardinge wrote: > >> Pedro Larroy Tovar wrote: >> >>> Hi >>> >>> I can reproduce a crash with 2.6.19-rc6-mm2 triggered when debugging a >>> program with gdb that uses pthreads. No oops or anything strange seems >>> to be printed by the kernel, but the box appears to stop doing disk IO. >>> > > >> Hm, I wonder if this is related walt's problem running things under gdb? >> > > Jeremy, I redid my git-bisect from scratch and came up with a different > commit for the gdb breakage: > > commit f95d47caae5302a63d92be9a0292abc90e2a14e1 > Author: Jeremy Fitzhardinge <jeremy@goop.org> > Date: Thu Dec 7 02:14:02 2006 +0100 > [PATCH] i386: Use %gs as the PDA base-segment in the kernel > > This commit is the one which causes gdb to halt with this error > no matter what executable I try to run: > Warning: > Cannot insert breakpoint -2. > Error accessing memory address 0xd74b: Input/output error. > > I tried to git-revert just this one commit, but I get merge conflicts > I don't how to resolve. > > BTW, I just discovered tons of kernel debugging config options which > were turned off -- I just turned several of them on. Maybe I can give > you better info now. >
OK, this is the changeset I'd expect to cause problems. I'll try to repo it here.
J
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