Hi,
An oops doesn't result in panic() call even when panic_on_oops
is set (if we've a crash kernel loaded). The reason seems to be
that from oops codepath before calling panic(), we call
crash_kexec() if panic_on_oops is set:
void __kprobes oops_end(unsigned long flags, struct pt_regs *regs, int signr)
{
if (regs && kexec_should_crash(current))
crash_kexec(regs); <====== I'm hitting this
.
.
if (panic_on_oops)
panic("Fatal exception"); <==== I want this to be hit
do_exit(signr);
}
int kexec_should_crash(struct task_struct *p)
{
if (in_interrupt() || !p->pid || is_global_init(p) || panic_on_oops)
return 1;
return 0;
}
If we let panic() get called from oops_end(), we would eventually
call crash_kexec() from panic() anyway. Isn't it?
Then is the panic_on_oops check in kexec_should_crash()
redundant? Or there's reason behind this behavior?
Would greatly appreciate any response here. Also please CC me
as I am not part of linux-kernel list.
Regards,
-Kalash
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