Messages in this thread | | | From | Michael Ellerman <> | Subject | Re: [v2] xmon: Setup xmon debugger hooks when first break-point is set | Date | Wed, 14 Mar 2018 20:28:31 +1100 (AEDT) |
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On Sun, 2018-03-04 at 17:30:25 UTC, Vaibhav Jain wrote: > Presently sysrq key for xmon('x') is registered during kernel init > irrespective of the value of kernel param 'xmon'. Thus xmon is enabled > even if 'xmon=off' is passed on the kernel command line. However this > doesn't enable the kernel debugger hooks needed for instruction or data > breakpoints. Thus when a break-point is hit with xmon=off a kernel oops > of the form below is reported: > > Oops: Exception in kernel mode, sig: 5 [#1] > < snip > > Trace/breakpoint trap > > To fix this the patch checks and enables debugger hooks when an > instruction or data break-point is set via xmon console. > > Signed-off-by: Vaibhav Jain <vaibhav@linux.vnet.ibm.com> > Reviewed-by: Balbir Singh <bsingharora@gmail.com>
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/e1368d0c9edbc366e45216e7295fd6
cheers
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