[lkml]   [2018]   [Mar]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH v2] xmon: Setup xmon debugger hooks when first break-point is set
On Mon, Mar 5, 2018 at 4:30 AM, 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 <>
> ---
Reviewed-by: Balbir Singh <>

 \ /
  Last update: 2018-03-04 22:30    [W:0.093 / U:0.432 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site