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linux/arch/csky/include/asm
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Arnd Bergmann e65d28d4e9 uaccess: fix integer overflow on access_ok() 
commit 222ca305c9 upstream.

Three architectures check the end of a user access against the
address limit without taking a possible overflow into account.
Passing a negative length or another overflow in here returns
success when it should not.

Use the most common correct implementation here, which optimizes
for a constant 'size' argument, and turns the common case into a
single comparison.

Cc: stable@vger.kernel.org
Fixes: da55128194 ("csky: User access")
Fixes: f663b60f52 ("microblaze: Fix uaccess_ok macro")
Fixes: 7567746e1c ("Hexagon: Add user access functions")
Reported-by: David Laight <David.Laight@aculab.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-03-28 09:58:45 +02:00
..
vdso
csky: Add VDSO with GENERIC_GETTIMEOFDAY, GENERIC_TIME_VSYSCALL, HAVE_GENERIC_VDSO
2021-02-27 16:35:09 +08:00
addrspace.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
asid.h
csky: Fixup typos
2021-04-20 09:58:29 +08:00
barrier.h
csky: Fixup typos
2021-04-20 09:58:29 +08:00
bitops.h
csky: bitops: Remove duplicate __clear_bit define
2021-10-16 07:20:12 +08:00
bug.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
cache.h
csky: Support icache flush without specific instructions
2020-02-21 15:43:24 +08:00
cacheflush.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
checksum.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
clocksource.h
csky: Add VDSO with GENERIC_GETTIMEOFDAY, GENERIC_TIME_VSYSCALL, HAVE_GENERIC_VDSO
2021-02-27 16:35:09 +08:00
cmpxchg.h
locking/atomic: csky: move to ARCH_ATOMIC
2021-05-26 13:20:51 +02:00
elf.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
fixmap.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
ftrace.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
futex.h
csky: Fixup futex SMP implementation
2021-01-12 09:52:40 +08:00
highmem.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
io.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
irq_work.h
csky: Add irq_work support
2020-07-31 01:55:46 +00:00
irqflags.h
csky: IRQ handling
2018-10-26 00:54:22 +08:00
Kbuild
csky: uaccess.h: Coding convention with asm generic
2021-04-28 23:02:23 +08:00
kprobes.h
csky: Add kprobes supported
2020-04-03 11:14:17 +08:00
memory.h
csky: Add memory layout 2.5G(user):1.5G(kernel)
2021-01-12 09:52:40 +08:00
mmu_context.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
mmu.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
page.h
csky: change a Kconfig symbol name to fix e1000 build error
2021-04-16 16:10:36 -07:00
pci.h
csky: Add PCI support
2020-02-21 15:43:25 +08:00
perf_event.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
pgalloc.h
mm/thp: define default pmd_pgtable()
2021-07-01 11:06:03 -07:00
pgtable.h
mm: define default value for FIRST_USER_ADDRESS
2021-07-01 11:06:02 -07:00
probes.h
csky: Add kprobes supported
2020-04-03 11:14:17 +08:00
processor.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
ptrace.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
reg_ops.h
csky: Misc headers
2018-10-26 00:54:26 +08:00
seccomp.h
csky: Enable seccomp architecture tracking
2020-11-20 11:16:34 -08:00
segment.h
csky: uaccess.h: Coding convention with asm generic
2021-04-28 23:02:23 +08:00
shmparam.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
smp.h
csky: CPU-hotplug supported for SMP
2018-12-31 23:03:53 +08:00
spinlock_types.h
csky: Cleanup asm/spinlock.h
2021-01-12 09:52:40 +08:00
spinlock.h
csky: Cleanup asm/spinlock.h
2021-01-12 09:52:40 +08:00
stackprotector.h
csky: Initial stack protector support
2020-02-21 15:43:24 +08:00
string.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
switch_to.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
syscall.h
Merge tag 'csky-for-linus-5.2-rc1' of git://github.com/c-sky/csky-linux
2019-05-08 11:41:08 -07:00
syscalls.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
tcm.h
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
thread_info.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
tlb.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
tlbflush.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
traps.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
uaccess.h
uaccess: fix integer overflow on access_ok()
2022-03-28 09:58:45 +02:00
unistd.h
csky: Fixup compile error
2021-02-27 22:04:14 +08:00
uprobes.h
csky: Add uprobes support
2020-04-03 11:37:51 +08:00
vdso.h
csky: Fixup typos
2021-04-20 09:58:29 +08:00
vmalloc.h
mm/vmalloc: Add empty <asm/vmalloc.h> headers and use them from <linux/vmalloc.h>
2019-12-10 10:12:55 +01:00