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Paul Burton d04f1b44f6 MIPS: WARN_ON invalid DMA cache maintenance, not BUG_ON 
[ Upstream commit d4da0e97baea8768b3d66ccef3967bebd50dfc3b ]

If a driver causes DMA cache maintenance with a zero length then we
currently BUG and kill the kernel. As this is a scenario that we may
well be able to recover from, WARN & return in the condition instead.

Signed-off-by: Paul Burton <paul.burton@mips.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/14623/
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-19 22:48:59 +02:00
..
alpha sys: don't hold uts_sem while accessing userspace memory 2018-09-09 20:04:35 +02:00
arc ARC: [plat-axs*]: Enable SWAP 2018-09-19 22:48:56 +02:00
arm irqchip/gic-v3: Add missing barrier to 32bit version of gic_read_iar() 2018-09-15 09:40:41 +02:00
arm64 arm64: mm: check for upper PAGE_SHIFT bits in pfn_valid() 2018-09-05 09:18:38 +02:00
avr32 avr32: off by one in at32_init_pio() 2016-10-07 15:23:45 +02:00
blackfin pinctrl: adi2: Fix Kconfig build problem 2017-12-20 10:05:00 +01:00
c6x c6x/ptrace: Remove useless PTRACE_SETREGSET implementation 2017-03-31 09:49:53 +02:00
cris cris: Only build flash rescue image if CONFIG_ETRAX_AXISFLASHMAP is selected 2017-01-12 11:22:48 +01:00
frv futex: Remove duplicated code and fix undefined behaviour 2018-05-26 08:48:50 +02:00
h8300 h8300/ptrace: Fix incorrect register transfer count 2017-03-31 09:49:53 +02:00
hexagon futex: Remove duplicated code and fix undefined behaviour 2018-05-26 08:48:50 +02:00
ia64 futex: Remove duplicated code and fix undefined behaviour 2018-05-26 08:48:50 +02:00
m32r m32r: fix __get_user() 2016-09-24 10:07:43 +02:00
m68k m68k: fix "bad page state" oops on ColdFire boot 2018-08-24 13:26:57 +02:00
metag metag/uaccess: Check access_ok in strncpy_from_user 2017-05-25 14:30:16 +02:00
microblaze microblaze: Fix simpleImage format generation 2018-08-06 16:24:39 +02:00
mips MIPS: WARN_ON invalid DMA cache maintenance, not BUG_ON 2018-09-19 22:48:59 +02:00
mn10300 mn10300/misalignment: Use SIGSEGV SEGV_MAPERR to report a failed user copy 2018-02-16 20:09:47 +01:00
nios2 nios2: reserve boot memory for device tree 2017-04-12 12:38:34 +02:00
openrisc kthread: fix boot hang (regression) on MIPS/OpenRISC 2018-09-19 22:48:55 +02:00
parisc parisc: Remove unnecessary barriers from spinlock.h 2018-08-24 13:27:01 +02:00
powerpc powerpc/pseries: Avoid using the size greater than RTAS_ERROR_LOG_MAX. 2018-09-15 09:40:39 +02:00
s390 s390/lib: use expoline for all bcr instructions 2018-09-15 09:40:42 +02:00
score score: fix copy_from_user() and friends 2016-09-24 10:07:44 +02:00
sh sh: New gcc support 2018-06-06 16:46:20 +02:00
sparc sys: don't hold uts_sem while accessing userspace memory 2018-09-09 20:04:35 +02:00
tile futex: Remove duplicated code and fix undefined behaviour 2018-05-26 08:48:50 +02:00
um um: Use POSIX ucontext_t instead of struct ucontext 2018-04-24 09:32:08 +02:00
unicore32 pwm: Changes for v4.4-rc1 2015-11-11 09:16:10 -08:00
x86 x86/mm: Remove in_nmi() warning from vmalloc_fault() 2018-09-19 22:48:58 +02:00
xtensa signal/xtensa: Consistenly use SIGBUS in do_unaligned_user 2018-07-03 11:21:26 +02:00
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Kconfig