kernel.git/arch/x86/include/asm/extable.h, branch linux-4.13.yHosts the 0x221E linux distro kernel.
https://git.0xinfinity.dev/distro/kernel.git/atom?h=linux-4.13.y2017-06-12T19:17:48Zx86/debug: Handle early WARN_ONs proper2017-06-12T19:17:48ZPeter Zijlstra2017-06-12T11:52:46Zurn:sha1:8a524f803a3e0290cdba6d373361b2cef9752934
Hans managed to trigger a WARN very early in the boot which killed his
(Virtual) box.
The reason is that the recent rework of WARN() to use UD0 forgot to add the
fixup_bug() call to early_fixup_exception(). As a result the kernel does
not handle the WARN_ON injected UD0 exception and panics.
Add the missing fixup call, so early UD's injected by WARN() get handled.
Fixes: 9a93848fe787 ("x86/debug: Implement __WARN() using UD0")
Reported-and-tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Frank Mehnert <frank.mehnert@oracle.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Michael Thayer <michael.thayer@oracle.com>
Link: http://lkml.kernel.org/r/20170612180108.w4vgu2ckucmllf3a@hirez.programming.kicks-ass.net
x86: separate extable.h, switch sections.h to it2016-09-28T01:15:23ZAl Viro2016-09-05T15:32:44Zurn:sha1:45caf470077ae6b02da6d5eaee94003ee1543ca3
drivers/platform/x86/dell-smo8800.c is touched due to the following obscenity:
drivers/platform/x86/dell-smo8800.c ->
linux/interrupt.h ->
linux/hardirq.h ->
asm/hardirq.h ->
linux/irq.h ->
asm/hw_irq.h ->
asm/sections.h ->
asm/uaccess.h
is the only chain of includes pulling asm/uaccess.h there.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>