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Author SHA1 Message Date
Sergej Schumilo
976d8e8329 minor fix (file_helper.c) 2022-10-16 23:51:13 +02:00
Sergej Schumilo
6e0a6ccbda add "clang-format on/off" comments 
to enable auto-formatting of vl.c & kvm-all.c
 2022-10-16 23:51:13 +02:00
Sergej Schumilo
e4269fc973 manual code cleanups (reviewed) 
Tried to minimize actual code modifcations but we got
- several comments/printf messages edited to meet line limits
- occasionally switch some lines to put declarations or printfs in blocks
- couple more places marked TODO or FIXME to avoid non-trivial changes
- fixed PAGE_SIZE define in helpers.h to avoid redeclaration warning
- remove several chunks of dead or commented code

Co-authored-by: Steffen Schulz <steffen.schulz@intel.com>
 2022-10-16 23:51:13 +02:00
Steffen Schulz
949ab6c9f9 add a .clang-format for Qemu style plus various fixes 
Based on bab9fdd5d1/.clang-format
 2022-10-16 23:51:13 +02:00
Sergej Schumilo
80f22f77d6 fix usage of nyx_debug_p() (add missing prefix) 2022-09-22 05:19:45 +02:00
Steffen Schulz
e83025a145 replace custom printf with nyx_<level>() wrappers 
This introduces generic printf wrappers to replace the various
instances of debug_printf, fprintf, QEMU_PR_PRINTF etc.

Several more hardcoded printf() are still present and should probably be
replaced with nyx_debug_p().
 2022-09-22 05:07:37 +02:00
Steffen Schulz
f91ff284ee switch debug logging to use qemu_log_mask() 
Default qemu_log is written to stderr, or logged to file with -D
Additional qemu_log_masked(LOG_NYX) can be enabled with -d nyx
 2022-09-22 05:07:37 +02:00
Steffen Schulz
bd34c46b85 fix printf format string errors 2022-09-22 05:07:37 +02:00
Steffen Schulz
ab668227f9 add NYX_DEBUG option in debug mode 2022-09-22 05:07:37 +02:00
Steffen Schulz
d407bab254 No vm_start() on snapshot restore (fixes #29) 
Actual vm_start() performed by caller in vl.c. This extra vm_start()
breaks "qemu -S" function in combination with snapshot loads.
 2022-09-07 20:11:21 +02:00
Sergej Schumilo
4df041cd8e
Merge pull request #22 from il-steffen/page_cache_racing 
Page cache racing
 2022-05-25 10:52:52 +02:00
Steffen Schulz
6a336d0d3a Revert "page_cache: auto-create workdir files or resume based on existing files" 
This reverts commit b8995723775c5ee75355ef4e87922cec359245e5.
 2022-05-25 01:06:50 +02:00
Steffen Schulz
c93998e817 Revert "page_cache: use file lock also for read access" 
This reverts commit 5c24050a645b0db69a806cb100f4e263ca191838.
 2022-05-25 01:06:38 +02:00
Sergej Schumilo
5c8cf793ec
Merge pull request #21 from schumilo/qemu-nyx-4.2.0 
various build script fixes
 2022-05-11 19:55:34 +02:00
Sergej Schumilo
847a32fbf2 update libxdc submodule 2022-05-11 19:53:55 +02:00
Sergej Schumilo
dd901b5f84 fix build script (error in non-static mode) 2022-05-11 19:53:11 +02:00
Sergej Schumilo
b39169eca6 don’t install libxdc or libcapstone (in non-static mode) 2022-05-11 19:50:43 +02:00
Sergej Schumilo
54f4d2f1ab check arguments before compiling dependencies 2022-05-11 19:40:57 +02:00
Sergej Schumilo
ab7ee8223c
Merge pull request #15 from il-steffen/buildfixes 
compile.sh fixes
 2022-05-11 19:14:26 +02:00
Sergej Schumilo
f66671d93b
Merge pull request #20 from schumilo/qemu-nyx-4.2.0 
various bug fixes from dev branch
 2022-05-11 18:03:52 +02:00
Sergej Schumilo
108fa3baf9 fix starved bug in vanilla kvm mode (caused by reading of uninitialized memory) 2022-05-11 18:00:12 +02:00
Steffen Schulz
d4ba169bea Remove superfluous printf 
Extra printf just spams the console on startup..
 2022-05-11 18:00:11 +02:00
Steffen Schulz
9e56f6731e fix timeout detection to only reset on VM reset 
reset_timeout_detection() is already called at end of NEXT_PAYLOAD
handler to properly re-init the timer on every new execution.

Remove the additional call in synchronization_lock() which prevents
proper timeout on targets that do a lot of hprintf().

Also remove extra call in synchronization_lock_timeout_found() which
really just seems to be a duplicate with no observable effect.

To reproduce, run a harness that uses hprintf() in infinite loop. It
will take longer due to execute due to userland overhead but should
eventually return with aux_buffer/runtime similar to configured timeout.
 2022-05-11 18:00:11 +02:00
Steffen Schulz
35809c5207 cleanup timeout_detection 2022-05-11 18:00:11 +02:00
Steffen Schulz
a2ee5ef587 fix runtime_usec wraparound in aux_buffer 
To reproduce the issue, launch fast running harness with aux_buffer->timeout_usec=0 and timeout_sec=1
 2022-05-11 18:00:11 +02:00
Sergej Schumilo
9959725652 fix warning: in vl.c 2022-05-11 18:00:11 +02:00
Sergej Schumilo
e6c25cbdee fix warning: remove unused variables 2022-05-11 18:00:11 +02:00
Steffen Schulz
02d6e1545c allow to override libxdc/capstone repo locations 
Fetch submodules only if either LIBXDC_ROOT or CAPSTONE_ROOT are empty.
 2022-04-27 01:40:45 +02:00
Steffen Schulz
ec36a3551f extra LDFLAGS needed for libxdc dev version + ptdump_static 
Note sure why -Llibxdc is needed when libxdc Makefile contains -L.?
 2022-04-27 01:30:36 +02:00
Steffen Schulz
c3bbf86ddd avoid hardcoded paths in configure script 
Allows calling configure with custom libxdc/capstone locations
 2022-04-27 00:45:48 +02:00
Steffen Schulz
5846b4b094 cosmetic overhaul for compile_qemu_nyx.sh 2022-04-27 00:38:55 +02:00
Sergej Schumilo
00da434bec
Merge pull request #13 from schumilo/qemu-nyx-4.2.0 
fix oobs read (in shadow_memory_read_page_frame)
 2022-04-18 19:27:19 +02:00
Sergej Schumilo
2c3b7a7873 fix oobs read (in shadow_memory_read_page_frame) 2022-04-18 19:24:58 +02:00
Sergej Schumilo
fc39d1d5da
Merge pull request #11 from schumilo/qemu-nyx-4.2.0 
improve shadow_memory_read_physical_memory()
 2022-04-09 06:51:44 +02:00
Sergej Schumilo
72a95d8bfb improve shadow_memory_read_physical_memory() 
this patch removes several limitations (size & alignment)
 2022-04-09 06:50:19 +02:00
Sergej Schumilo
1acaa75a8b
Merge pull request #10 from nyx-fuzz/qemu-nyx-4.2.0-dev-intel 
push qemu-nyx-4.2.0-dev-intel to qemu-nyx-4.2.0
 2022-04-07 11:04:36 +02:00
Sergej Schumilo
d86e2b05a4
Merge pull request #9 from schumilo/qemu-nyx-4.2.0-dev-intel 
several changes
 2022-04-07 11:01:57 +02:00
Sergej Schumilo
758e65871b update NYX_HOST_VERSION 2022-04-07 10:58:16 +02:00
Sergej Schumilo
0449772d10 fix compile script 2022-04-07 10:52:48 +02:00
Sergej Schumilo
164f449a02 fix several compiler warnings 2022-04-07 10:52:30 +02:00
Sergej Schumilo
ea4bdcd6d9
Merge pull request #7 from c01db33f/qemu-nyx-4.2.0 
Reimplemented x86_64 page table walking code.
 2022-04-07 07:09:14 +02:00
Sergej Schumilo
8c192d29a5
Merge pull request #8 from x86-sec/optarg-bug 
Qemu nyx options parsing / optarg bug
 2022-04-06 17:27:39 +02:00
Benoît Morgan
d45d4da277 Optarg bug 2022-03-25 10:38:34 +01:00
Mark Brand
e7f63f4401 Reimplemented x86_64 page table walking code. 2022-03-18 10:31:38 +01:00
Sergej Schumilo
c08e4ac942
Merge pull request #6 from schumilo/qemu-nyx-4.2.0 
bug fix: don't reuse ram_offset as physical address
 2022-03-04 03:32:33 +01:00
Sergej Schumilo
8e8f6e5b2b uncomment several fprintfs in state_reallocation 2022-02-23 10:28:44 +01:00
Sergej Schumilo
1f675b053a fix crash notifier injection 
Decide which crash notifier (32bit or 64bit) to inject, based on the
current memory mode instead of the current CPU mode. Otherwise, in the
case of a 32bit loader running on a 64bit operating system, the wrong
notifier code will be injected.
 2022-02-23 10:26:02 +01:00
Sergej Schumilo
b95d6b9236 fix a global oob read 
Use an additional constant to specifiy the size of the crash notifier
code in 32 bit mode (submit_panic / submit_kasan).
 2022-02-23 08:55:00 +01:00
Sergej Schumilo
954158c43a Revert "checkout specific libxdc commit" 
This reverts commit d5a7011ad20ba5ba91f1371f9d40154035d5d768.
 2022-02-23 08:39:36 +01:00
Sergej Schumilo
0f8447d93a
Merge pull request #4 from il-steffen/staging-upstream-3 
various improvements
 2022-02-22 23:26:27 +01:00