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Subject[PATCH 4/7] x86, dumpstack: always call oops_exit from oops_end
Date
Always call oops_exit from oops_end, even if signr==0.

Also, move add_taint(TAINT_DIE) from __die to oops_end
on x86_64 and interchange two lines to make oops_end
more similar to the i386-version.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
---
arch/x86/kernel/dumpstack_32.c | 2 +-
arch/x86/kernel/dumpstack_64.c | 11 +++++------
2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/arch/x86/kernel/dumpstack_32.c b/arch/x86/kernel/dumpstack_32.c
index 7c22f99..a29b88f 100644
--- a/arch/x86/kernel/dumpstack_32.c
+++ b/arch/x86/kernel/dumpstack_32.c
@@ -318,6 +318,7 @@ void __kprobes oops_end(unsigned long flags, struct pt_regs *regs, int signr)
__raw_spin_unlock(&die_lock);
raw_local_irq_restore(flags);

+ oops_exit();
if (!signr)
return;

@@ -325,7 +326,6 @@ void __kprobes oops_end(unsigned long flags, struct pt_regs *regs, int signr)
panic("Fatal exception in interrupt");
if (panic_on_oops)
panic("Fatal exception");
- oops_exit();
do_exit(signr);
}

diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c
index 57ce11b..dc6162b 100644
--- a/arch/x86/kernel/dumpstack_64.c
+++ b/arch/x86/kernel/dumpstack_64.c
@@ -461,22 +461,22 @@ 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_owner = -1;
+ add_taint(TAINT_DIE);
die_nest_count--;
if (!die_nest_count)
/* Nest count reaches zero, release the lock. */
__raw_spin_unlock(&die_lock);
raw_local_irq_restore(flags);
- if (!signr) {
- oops_exit();
+ oops_exit();
+
+ if (!signr)
return;
- }
if (in_interrupt())
panic("Fatal exception in interrupt");
if (panic_on_oops)
panic("Fatal exception");
- oops_exit();
do_exit(signr);
}

@@ -499,7 +499,6 @@ int __kprobes __die(const char *str, struct pt_regs *regs, long err)
return 1;

show_registers(regs);
- add_taint(TAINT_DIE);
/* Executive summary in case the oops scrolled away */
printk(KERN_ALERT "RIP ");
printk_address(regs->ip, 1);
--
1.5.4.3


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