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Masami Hiramatsu 104cff9161 ARM: 8772/1: kprobes: Prohibit kprobes on get_user functions 
commit 0d73c3f8e7f6ee2aab1bb350f60c180f5ae21a2c upstream.

Since do_undefinstr() uses get_user to get the undefined
instruction, it can be called before kprobes processes
recursive check. This can cause an infinit recursive
exception.
Prohibit probing on get_user functions.

Fixes: 24ba613c9d ("ARM kprobes: core code")
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-26 08:48:57 +02:00
..
alpha futex: Remove duplicated code and fix undefined behaviour 2018-05-26 08:48:50 +02:00
arc futex: Remove duplicated code and fix undefined behaviour 2018-05-26 08:48:50 +02:00
arm ARM: 8772/1: kprobes: Prohibit kprobes on get_user functions 2018-05-26 08:48:57 +02:00
arm64 futex: Remove duplicated code and fix undefined behaviour 2018-05-26 08:48:50 +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 ndelay() macro 2016-12-15 08:49:23 -08:00
metag metag/uaccess: Check access_ok in strncpy_from_user 2017-05-25 14:30:16 +02:00
microblaze futex: Remove duplicated code and fix undefined behaviour 2018-05-26 08:48:50 +02:00
mips futex: Remove duplicated code and fix undefined behaviour 2018-05-26 08:48:50 +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 signal/openrisc: Fix do_unaligned_access to send the proper signal 2018-02-16 20:09:46 +01:00
parisc futex: Remove duplicated code and fix undefined behaviour 2018-05-26 08:48:50 +02:00
powerpc powerpc/powernv: Fix NVRAM sleep in invalid context when crashing 2018-05-26 08:48:55 +02:00
s390 s390: remove indirect branch from do_softirq_own_stack 2018-05-26 08:48:56 +02:00
score score: fix copy_from_user() and friends 2016-09-24 10:07:44 +02:00
sh futex: Remove duplicated code and fix undefined behaviour 2018-05-26 08:48:50 +02:00
sparc futex: Remove duplicated code and fix undefined behaviour 2018-05-26 08:48:50 +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 efi: Avoid potential crashes, fix the 'struct efi_pci_io_protocol_32' definition for mixed mode 2018-05-26 08:48:56 +02:00
xtensa futex: Remove duplicated code and fix undefined behaviour 2018-05-26 08:48:50 +02:00
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Kconfig