On Mon, 2008-05-26 at 23:12 -0700, Roland McGrath wrote: > > [<a00000010000a9f0>] skip_rbs_switch+0xe0/0x110 > > sp=e000000141c9fe30 bsp=e000000141c90cf8 > > [<a000000000010740>] __kernel_syscall_via_break+0x0/0x20 > > sp=e000000141ca0000 bsp=e000000141c90cf8 Indeed, there seems to be a large hole here. So, this is either a bug in the unwinder, or a bug in the RBS synchronization, which causes corruption. My test machine currently needs some work to run 2.6.25 again, but I'll try your test case as soon as I re-install it later this week. Cheers, Petr Tesarik > > [<a0000001000971c0>] ptrace_stop+0xa0/0x3e0 > > sp=e00000014716fdb0 bsp=e000000147160ca8 > > [<a000000100097650>] ptrace_notify+0x150/0x1c0 > > sp=e00000014716fdb0 bsp=e000000147160c88 > > If this is a backtrace of a single thread on the same kernel stack, it has > a stack depth of over 84MB. You still need to follow the path inside > ia64_ptrace_stop() to see how any of this is possible. > > > Thanks, > Roland -- To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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