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

..

acpi

Merge tag 'acpi-5.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2019-05-15 08:58:49 -07:00

asm-generic

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

clocksource

clocksource/arm_arch_timer: Store physical timer IRQ number for KVM on VHE

2019-02-19 21:05:22 +00:00

crypto

crypto: shash - remove shash_desc::flags

2019-04-25 15:38:12 +08:00

drm

Merge tag 'drm-next-2019-05-09' of git://anongit.freedesktop.org/drm/drm

2019-05-08 21:35:19 -07:00

dt-bindings

Merge tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2019-05-16 08:38:17 -07:00

keys

KEYS: trusted: fix -Wvarags warning

2019-04-08 15:58:54 -07:00

kvm

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

2019-03-15 15:00:28 -07:00

linux

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

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

math-emu

…

media

Merge tag 'media/v5.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

2019-05-16 11:57:16 -07:00

memory

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misc

ocxl: Provide global MMIO accessors for external drivers

2019-05-03 02:55:02 +10:00

net

Merge tag 'afs-fixes-20190516' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

2019-05-16 17:00:13 -07:00

pcmcia

…

ras

…

rdma

RDMA: Add EFA related definitions

2019-05-06 13:47:50 -03:00

scsi

scsi: libsas: Inject revalidate event for root port event

2019-04-15 18:55:00 -04:00

soc

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

sound

Merge tag 'sound-fix-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

2019-05-17 13:57:54 -07:00

target

scsi: target/iscsi: Handle too large immediate data buffers correctly

2019-04-12 20:20:06 -04:00

trace

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

2019-05-15 16:05:47 -07:00

uapi

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

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

video

udlfb: introduce a rendering mutex

2019-04-01 17:46:57 +02:00

xen

block: pass page to xen_biovec_phys_mergeable

2019-04-01 12:11:13 -06:00