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linux/tools/perf/util/intel-pt-decoder
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Masami Hiramatsu 6bb78b3fff x86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes 
commit 4e9a5ae8df upstream.

Since insn.prefixes.nbytes can be bigger than the size of
insn.prefixes.bytes[] when a prefix is repeated, the proper check must
be

  insn.prefixes.bytes[i] != 0 and i < 4

instead of using insn.prefixes.nbytes.

Introduce a for_each_insn_prefix() macro for this purpose. Debugged by
Kees Cook <keescook@chromium.org>.

 [ bp: Massage commit message, sync with the respective header in tools/
   and drop "we". ]

Fixes: 2b14449835 ("uprobes, mm, x86: Add the ability to install and remove uprobes breakpoints")
Reported-by: syzbot+9b64b619f10f19d19a7c@syzkaller.appspotmail.com
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/160697103739.3146288.7437620795200799020.stgit@devnote2
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-12-11 13:25:02 +01:00
..
Build perf intel-pt: Improve build messages for files that differ from the kernel 2017-11-29 18:18:02 -03:00
gen-insn-attr-x86.awk License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
inat_types.h
inat.c
inat.h perf intel-pt: Bring instruction decoder files into line with the kernel 2017-11-28 14:28:49 -03:00
insn.c
insn.h x86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes 2020-12-11 13:25:02 +01:00
intel-pt-decoder.c perf intel-pt: Fix FUP packet state 2020-08-21 11:05:34 +02:00
intel-pt-decoder.h perf intel-pt: Fix "Unexpected indirect branch" error 2018-06-06 12:52:08 -03:00
intel-pt-insn-decoder.c perf/core improvements and fixes: 2017-03-16 17:29:23 +01:00
intel-pt-insn-decoder.h perf intel-pt/bts: Tidy instruction buffer size usage 2016-10-24 10:31:32 -03:00
intel-pt-log.c perf intel-pt/bts: Tidy instruction buffer size usage 2016-10-24 10:31:32 -03:00
intel-pt-log.h tools: Adopt __printf from kernel sources 2017-06-19 15:25:26 -03:00
intel-pt-pkt-decoder.c perf intel-pt: Fix packet decoding of CYC packets 2018-06-25 11:59:36 -03:00
intel-pt-pkt-decoder.h perf intel-pt: Add decoder support for ptwrite and power event packets 2017-06-21 11:35:50 -03:00
x86-opcode-map.txt x86/decoder: Fix and update the opcodes map 2017-12-15 13:45:20 +01:00