Masami Hiramatsu 2d8d8fac3b x86/uaccess: Allow access_ok() in irq context if pagefault_disabled ...

WARN_ON_IN_IRQ() assumes that the access_ok() and following
user memory access can sleep. But this assumption is not
always correct; when the pagefault is disabled, following
memory access will just returns -EFAULT and never sleep.

Add pagefault_disabled() check in WARN_ON_ONCE() so that
it can ignore the case we call it with disabling pagefault.
For this purpose, this modified pagefault_disabled() as
an inline function.

Link: http://lkml.kernel.org/r/155789868664.26965.7932665824135793317.stgit@devnote2

Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

2019-05-25 23:04:42 -04:00

..

alpha

alpha: move arch/alpha/defconfig to arch/alpha/configs/defconfig

2019-05-18 11:49:55 +09:00

arc

Merge tag 'asm-generic-nommu' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

2019-05-16 11:26:37 -07:00

arm

Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2019-05-19 11:11:20 -07:00

arm64

Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2019-05-19 10:58:45 -07:00

c6x

Merge tag 'asm-generic-nommu' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

2019-05-16 11:26:37 -07:00

csky

arch: remove dangling asm-generic wrappers

2019-05-18 11:49:52 +09:00

h8300

arch: remove dangling asm-generic wrappers

2019-05-18 11:49:52 +09:00

hexagon

Merge tag 'asm-generic-nommu' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

2019-05-16 11:26:37 -07:00

ia64

ia64: require -Wl,--hash-style=sysv

2019-05-18 11:29:01 +09:00

m68k

Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2019-05-17 09:46:31 -07:00

microblaze

Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2019-05-17 09:46:31 -07:00

mips

Merge tag 'kbuild-v5.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

2019-05-19 11:53:58 -07:00

nds32

arch: remove dangling asm-generic wrappers

2019-05-18 11:49:52 +09:00

nios2

Merge tag 'asm-generic-nommu' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

2019-05-16 11:26:37 -07:00

openrisc

Merge tag 'asm-generic-nommu' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

2019-05-16 11:26:37 -07:00

parisc

Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2019-05-17 09:46:31 -07:00

powerpc

Merge branch 'akpm' (patches from Andrew)

2019-05-19 12:15:32 -07:00

riscv

Merge tag 'kbuild-v5.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

2019-05-19 11:53:58 -07:00

s390

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2019-05-17 10:33:30 -07:00

sh

treewide: prefix header search paths with $(srctree)/

2019-05-18 11:49:57 +09:00

sparc

Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2019-05-17 09:46:31 -07:00

um

Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2019-05-19 10:23:24 -07:00

unicore32

Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2019-05-19 10:23:24 -07:00

x86

x86/uaccess: Allow access_ok() in irq context if pagefault_disabled

2019-05-25 23:04:42 -04:00

xtensa

treewide: prefix header search paths with $(srctree)/

2019-05-18 11:49:57 +09:00

.gitignore

…

Kconfig

Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2019-05-16 11:00:20 -07:00