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Subject[PATCH 3/7] x86_64, dumpstack: move kexec_crash from __die to oops_end
Date
oops_end is preceded by either a call to __die, or a conditional
call to crash_kexec. Move the conditional call to crash_kexec
from the end of __die to the start of oops_end and remove
the superfluous call to crash_kexec in die_nmi.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
---
arch/x86/kernel/dumpstack_64.c | 9 ++++-----
1 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c
index ffefea6..57ce11b 100644
--- a/arch/x86/kernel/dumpstack_64.c
+++ b/arch/x86/kernel/dumpstack_64.c
@@ -458,6 +458,9 @@ unsigned __kprobes long oops_begin(void)

void __kprobes oops_end(unsigned long flags, struct pt_regs *regs, int signr)
{
+ if (regs && kexec_should_crash(current))
+ crash_kexec(regs);
+
die_owner = -1;
bust_spinlocks(0);
die_nest_count--;
@@ -501,8 +504,6 @@ int __kprobes __die(const char *str, struct pt_regs *regs, long err)
printk(KERN_ALERT "RIP ");
printk_address(regs->ip, 1);
printk(" RSP <%016lx>\n", regs->sp);
- if (kexec_should_crash(current))
- crash_kexec(regs);
return 0;
}

@@ -536,11 +537,9 @@ die_nmi(char *str, struct pt_regs *regs, int do_panic)
printk(" on CPU%d, ip %08lx, registers:\n",
smp_processor_id(), regs->ip);
show_registers(regs);
- if (kexec_should_crash(current))
- crash_kexec(regs);
+ oops_end(flags, regs, 0);
if (do_panic || panic_on_oops)
panic("Non maskable interrupt");
- oops_end(flags, regs, 0);
nmi_exit();
local_irq_enable();
do_exit(SIGBUS);
--
1.5.4.3


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