show_regs vs dump_stack in watchdog_timer_fn
Hello, Why the stack isn't always dumped in watchdog_timer_fn ([1])? Registers content is useful, but without a stack trace it's very hard to find the task which caused system softlockup. thanks, Daniel. [1] http://lxr.linux.no/linux+v2.6.39/kernel/watchdog.c#L292
On Thu, Jun 2, 2011 at 21:15, Daniel Baluta <daniel.baluta@gmail.com> wrote:
Hello,
Why the stack isn't always dumped in watchdog_timer_fn ([1])?
Registers content is useful, but without a stack trace it's very hard to find the task which caused system softlockup.
AFAIK, because there's no guarantee stack frame content can be trusted as such time...i.e could be corrupted... -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com
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Mulyadi Santosa