linux/arch/x86/lib
Ricardo Neri ed594e4ba5 x86/insn-eval: Do not BUG on invalid register type
We are not in a critical failure path. The invalid register type is caused
when trying to decode invalid instruction bytes from a user-space program.
Thus, simply print an error message. To prevent this warning from being
abused from user space programs, use the rate-limited variant of pr_err().
along with a descriptive prefix.

Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: ricardo.neri@intel.com
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Huang Rui <ray.huang@amd.com>
Cc: Qiaowei Ren <qiaowei.ren@intel.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: "Ravi V. Shankar" <ravi.v.shankar@intel.com>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Chen Yucong <slaoub@gmail.com>
Cc: Adam Buchbinder <adam.buchbinder@gmail.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Thomas Garnier <thgarnie@google.com>
Link: https://lkml.kernel.org/r/1509135945-13762-11-git-send-email-ricardo.neri-calderon@linux.intel.com
2017-11-01 21:50:10 +01:00
..
.gitignore
atomic64_32.c x86: Adjust asm constraints in atomic64 wrappers 2012-01-20 17:29:31 -08:00
atomic64_386_32.S x86/debug: Remove perpetually broken, unmaintainable dwarf annotations 2015-06-02 07:57:48 +02:00
atomic64_cx8_32.S x86/debug: Remove perpetually broken, unmaintainable dwarf annotations 2015-06-02 07:57:48 +02:00
cache-smp.c x86/lib: Audit and remove any unnecessary uses of module.h 2016-07-14 15:06:58 +02:00
checksum_32.S x86: move exports to actual definitions 2016-08-07 23:47:15 -04:00
clear_page_64.S x86/asm: Optimize clear_page() 2017-03-07 08:28:00 +01:00
cmdline.c x86/boot: Add early cmdline parsing for options with arguments 2017-07-18 11:38:06 +02:00
cmpxchg8b_emu.S x86: move exports to actual definitions 2016-08-07 23:47:15 -04:00
cmpxchg16b_emu.S x86/debug: Remove perpetually broken, unmaintainable dwarf annotations 2015-06-02 07:57:48 +02:00
copy_page_64.S x86: move exports to actual definitions 2016-08-07 23:47:15 -04:00
copy_user_64.S x86/uaccess: Optimize copy_user_enhanced_fast_string() for short strings 2017-06-30 09:52:51 +02:00
cpu.c x86/lib: Audit and remove any unnecessary uses of module.h 2016-07-14 15:06:58 +02:00
csum-copy_64.S x86/asm: Don't use RBP as a temporary register in csum_partial_copy_generic() 2017-05-05 07:59:24 +02:00
csum-partial_64.c x86: move exports to actual definitions 2016-08-07 23:47:15 -04:00
csum-wrappers_64.c Merge branch 'x86-headers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-08-01 14:23:42 -04:00
delay.c Prevent timer value 0 for MWAITX 2017-04-30 13:35:11 +02:00
getuser.S x86: move exports to actual definitions 2016-08-07 23:47:15 -04:00
hweight.S Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2016-10-14 14:26:58 -07:00
inat.c x86: Fix to decode grouped AVX with VEX pp bits 2012-02-11 15:11:35 +01:00
insn-eval.c x86/insn-eval: Do not BUG on invalid register type 2017-11-01 21:50:10 +01:00
insn.c x86/insn: Add AVX-512 support to the instruction decoder 2016-07-21 09:37:11 -03:00
iomap_copy_64.S x86/debug: Remove perpetually broken, unmaintainable dwarf annotations 2015-06-02 07:57:48 +02:00
kaslr.c x86/mm/kaslr: Use the _ASM_MUL macro for multiplication to work around Clang incompatibility 2017-05-05 08:31:05 +02:00
Makefile x86/mpx, x86/insn: Relocate insn util functions to a new insn-eval file 2017-11-01 21:50:10 +01:00
memcpy_32.c include/linux/string.h: add the option of fortified string.h functions 2017-07-12 16:26:03 -07:00
memcpy_64.S x86/mce: Fix copy/paste error in exception table entries 2017-03-22 08:43:25 +01:00
memmove_64.S x86: move exports to actual definitions 2016-08-07 23:47:15 -04:00
memset_64.S x86: move exports to actual definitions 2016-08-07 23:47:15 -04:00
misc.c x86/boot: Further compress CPUs bootup message 2013-10-01 10:52:30 +02:00
mmx_32.c x86/lib: Audit and remove any unnecessary uses of module.h 2016-07-14 15:06:58 +02:00
msr-reg-export.c x86/lib: Audit and remove any unnecessary uses of module.h 2016-07-14 15:06:58 +02:00
msr-reg.S objtool, x86: Add several functions and files to the objtool whitelist 2017-06-30 10:19:19 +02:00
msr-smp.c x86/lib: Audit and remove any unnecessary uses of module.h 2016-07-14 15:06:58 +02:00
msr.c x86/msr: Cleanup/streamline MSR helpers 2016-11-16 10:23:02 +01:00
putuser.S x86: move exports to actual definitions 2016-08-07 23:47:15 -04:00
rwsem.S locking/rwsem: Fix comment on register clobbering 2016-05-16 12:35:40 +02:00
string_32.c x86/lib: Audit and remove any unnecessary uses of module.h 2016-07-14 15:06:58 +02:00
strstr_32.c x86: move exports to actual definitions 2016-08-07 23:47:15 -04:00
usercopy_32.c x86: switch to RAW_COPY_USER 2017-03-29 12:06:28 -04:00
usercopy_64.c x86, dax, libnvdimm: remove wb_cache_pmem() indirection 2017-06-15 14:35:24 -07:00
usercopy.c x86: switch to RAW_COPY_USER 2017-03-29 12:06:28 -04:00
x86-opcode-map.txt x86/insn: perf tools: Add new ptwrite instruction 2017-06-27 11:58:04 -03:00