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Mohammad Ewais
,
Enrico Deiana
2
12/22/25
clean call app context flags not supported outside insertion phase
As documented here: https://dynamorio.org/dr__defines_8h.html#af1b1bc23c42ffb7452568176b09b1212
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clean call app context flags not supported outside insertion phase
As documented here: https://dynamorio.org/dr__defines_8h.html#af1b1bc23c42ffb7452568176b09b1212
12/22/25
York Ma
, …
Derek Bruening
3
12/12/25
Incorrect operand type in google server workload traces
Use the view tool for a human-readable view of the virtual registers used by each instruction. For a
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Incorrect operand type in google server workload traces
Use the view tool for a human-readable view of the virtual registers used by each instruction. For a
12/12/25
Palmer Dabbelt
, …
Phil Ramsey
11
12/11/25
Running the Tests Locally
For the attach / detach tests don't forget to run echo 0 | sudo tee /proc/sys/kernel/yama/
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Running the Tests Locally
For the attach / detach tests don't forget to run echo 0 | sudo tee /proc/sys/kernel/yama/
12/11/25
Usman Naeem
,
Kai Luk
2
12/10/25
Internal Crash at PC
Here's a similar test in vs2022-64: > 204: Test command: D:\a\dynamorio\dynamorio\build_debug-
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Internal Crash at PC
Here's a similar test in vs2022-64: > 204: Test command: D:\a\dynamorio\dynamorio\build_debug-
12/10/25
Michael Flanders
,
Derek Bruening
7
12/5/25
Locking in clean calls and drwrap_wrap pre/post callbacks
I do get the same error with both DynamoRIO and my client compiled for a release build and with debug
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Locking in clean calls and drwrap_wrap pre/post callbacks
I do get the same error with both DynamoRIO and my client compiled for a release build and with debug
12/5/25
吕志宏
, …
Derek Bruening
6
11/21/25
Can I call dr_app_setup_and_start in a signal handler ?
For the start/stop interface, yes: but it's usually SIGILL: see https://github.com/DynamoRIO/
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Can I call dr_app_setup_and_start in a signal handler ?
For the start/stop interface, yes: but it's usually SIGILL: see https://github.com/DynamoRIO/
11/21/25
吕志宏
11/14/25
Can I calling dr_app_setup_and_start() in a signal handler?
I want to perform tracing at a certain stage during application execution. Is it possible to call `
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Can I calling dr_app_setup_and_start() in a signal handler?
I want to perform tracing at a certain stage during application execution. Is it possible to call `
11/14/25
Mohammad Ewais
,
Kai Luk
5
11/11/25
<ERROR: using undefined symbol!>
I tried `-stderr_mask 15` but it doesn't seem to be showing anything more than what `-debug -
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<ERROR: using undefined symbol!>
I tried `-stderr_mask 15` but it doesn't seem to be showing anything more than what `-debug -
11/11/25
Suyash Mahar
,
Kai Luk
3
11/4/25
Validating memory access traces
Thank you, Kai. I ended up using this and it seems to suggest the trace load/store PKIs are
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Validating memory access traces
Thank you, Kai. I ended up using this and it seems to suggest the trace load/store PKIs are
11/4/25
Artem Kulikov
,
Derek Bruening
2
10/9/25
num_sets in cache_replacement_policy
This replacement policy was a recent refactoring. The size/assoc for TLB looks correct. But at a
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num_sets in cache_replacement_policy
This replacement policy was a recent refactoring. The size/assoc for TLB looks correct. But at a
10/9/25
Mohammad Ewais
, …
Derek Bruening
9
10/9/25
Sharing client data across Forks
Actually, trying to modify my code to move everything to shared memory is quite tedious AND error
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Sharing client data across Forks
Actually, trying to modify my code to move everything to shared memory is quite tedious AND error
10/9/25
Michael Flanders
,
Derek Bruening
6
10/9/25
"NOT following direct call from ... to _SEH_prolog4"
> It looks like the callee itself was already materialized into the cache earlier. Did you search
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"NOT following direct call from ... to _SEH_prolog4"
> It looks like the callee itself was already materialized into the cache earlier. Did you search
10/9/25
typ1232
, …
Derek Bruening
3
9/8/25
Memtracing specific functions
You can control the app's control flow, and there are existing projects that use DR to repeatedly
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Memtracing specific functions
You can control the app's control flow, and there are existing projects that use DR to repeatedly
9/8/25
York Ma
,
Derek Bruening
2
8/6/25
Unpaired return instructions in Google workload traces
Signal handlers do not have an explicit call but often end in a return to the trampoline that
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Unpaired return instructions in Google workload traces
Signal handlers do not have an explicit call but often end in a return to the trampoline that
8/6/25
Artem Shcherbak
,
Abhinav Sharma
2
8/4/25
Collecting trace for python async
Hi, We'd be happy to help, but more information is required: - What is the Python server? What
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Collecting trace for python async
Hi, We'd be happy to help, but more information is required: - What is the Python server? What
8/4/25
Deng Deng
,
Kai Luk
5
7/28/25
DynamoRIO's callstack walk fails on clang program
Thank you for your help! I have also tried your method, which is a little different with my code.
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DynamoRIO's callstack walk fails on clang program
Thank you for your help! I have also tried your method, which is a little different with my code.
7/28/25
Niklas Bartelheimer
,
Derek Bruening
6
7/28/25
Using start-stop interface for third party library calls
Sorry for the late reply, was temporary unavailable. Thanks for your help and the PR. Works like a
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Using start-stop interface for third party library calls
Sorry for the late reply, was temporary unavailable. Thanks for your help and the PR. Works like a
7/28/25
Masazumi Azuma
,
Derek Bruening
5
7/22/25
Unable to Share Analysis Data via Shared Memory
Note that the recommended approach is for your client to use dr_open_file and dr_map_file instead of
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Unable to Share Analysis Data via Shared Memory
Note that the recommended approach is for your client to use dr_open_file and dr_map_file instead of
7/22/25
Longfei Qiu
, …
Derek Bruening
5
7/2/25
Segfault on a simple program.
Thanks. I just opened a github issue (https://github.com/DynamoRIO/dynamorio/issues/7522). I can do
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Segfault on a simple program.
Thanks. I just opened a github issue (https://github.com/DynamoRIO/dynamorio/issues/7522). I can do
7/2/25
Toofy
, …
kkXK XXX
5
7/2/25
How can I build a custom tool successfully on windows?
My bro helped me solve this issue. Please check whether the macro #define SHOW_RESULTS is defined 在
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How can I build a custom tool successfully on windows?
My bro helped me solve this issue. Please check whether the macro #define SHOW_RESULTS is defined 在
7/2/25
Justin J
, …
Derek Bruening
3
6/23/25
Many file close fd syscalls
Some applications loop over every integer up to the file rlimit and call close on that just to make
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Many file close fd syscalls
Some applications loop over every integer up to the file rlimit and call close on that just to make
6/23/25
Justin J
,
Kai Luk
3
6/23/25
Super slow when running sshd
Hi Kai, Thanks a lot for your reply! I'm not using any Dynamorio clients. I simply run an SSH
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Super slow when running sshd
Hi Kai, Thanks a lot for your reply! I'm not using any Dynamorio clients. I simply run an SSH
6/23/25
Holger Unterbrink
,
Derek Bruening
10
6/20/25
Self modifying code
Doh, I think you are right. I ll check, thx for the hint ! Derek Bruening schrieb am Donnerstag, 19.
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Self modifying code
Doh, I think you are right. I ll check, thx for the hint ! Derek Bruening schrieb am Donnerstag, 19.
6/20/25
Ao Vak
,
Derek Bruening
4
6/10/25
Live Code Coverage with Ghidra
If this happens just once, the best thing is to flush the entire cache (pass 0, max). On Tue, Jun 10,
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Live Code Coverage with Ghidra
If this happens just once, the best thing is to flush the entire cache (pass 0, max). On Tue, Jun 10,
6/10/25
York Ma
, …
Enrico Deiana
9
6/5/25
Trace scheduler reports "Failed to open file..."
Thank you for letting us know what the problem was! We updated the doc on Google Workload Traces
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Trace scheduler reports "Failed to open file..."
Thank you for letting us know what the problem was! We updated the doc on Google Workload Traces
6/5/25
Holger Unterbrink
,
Derek Bruening
8
5/26/25
DynRio and SEH
same with drrun: C:\tools\dynamorio-git\build\suite\tests\bin>drrun.exe -- security-win32.
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DynRio and SEH
same with drrun: C:\tools\dynamorio-git\build\suite\tests\bin>drrun.exe -- security-win32.
5/26/25
Reza Ghanbari
, …
Derek Bruening
3
5/2/25
DR containers memory limitation
If you would like to extend the provided containers to optionally support using non-reachable heap we
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DR containers memory limitation
If you would like to extend the provided containers to optionally support using non-reachable heap we
5/2/25
Holger Unterbrink
,
Derek Bruening
4
5/2/25
drrun.exe segfault
thx Derek ! I have an idea what it is, I ll double check. Derek Bruening schrieb am Mittwoch, 30.
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drrun.exe segfault
thx Derek ! I have an idea what it is, I ll double check. Derek Bruening schrieb am Mittwoch, 30.
5/2/25
Reza Ghanbari
, …
Derek Bruening
4
4/30/25
Customizing the tracer
Please see the documentation which provides command lines for running the drmemtrace tracer.
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Customizing the tracer
Please see the documentation which provides command lines for running the drmemtrace tracer.
4/30/25
Peter
, …
Derek Bruening
8
4/11/25
PE minidump
Getting system library routines to work yet be isolated from the application is not easy and can be
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PE minidump
Getting system library routines to work yet be isolated from the application is not easy and can be
4/11/25