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Crash(Assertion failure) when opening large data #629

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kxxt opened this issue May 3, 2024 · 2 comments · Fixed by #636
Closed

Crash(Assertion failure) when opening large data #629

kxxt opened this issue May 3, 2024 · 2 comments · Fixed by #636
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@kxxt
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kxxt commented May 3, 2024

Describe the bug
hotspot crashed when opening a very large data file(1.72GB).

To Reproduce
Steps to reproduce the behavior:

hotspot hotspot_crash.data &> ~/hotspot.log

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

Version Info (please complete the following information):

  • Linux Kernel version: Linux spectre 6.8.8-arch1-1 #1 SMP PREEMPT_DYNAMIC Sun, 28 Apr 2024 15:59:47 +0000 x86_64 GNU/Linux
  • perf version: perf version 6.7-3
  • hotspot version (appimage? selfcompiled?): 1.4.80 from chaotic-aur (package version 20240412-1)
  • if self-compiled hotspot, what version of elfutils:

Additional context

unhandled event type 13   unknown type
/usr/include/c++/13.2.1/valarray:588: const _Tp& std::valarray<_Tp>::operator[](std::size_t) const [with _Tp = long long int; std::size_t = long unsigned int]: Assertion '__i < this->size()' failed.
zsh: IOT instruction (core dumped)  hotspot hotspot_crash.data

hotspot.log

Thanks for creating such a nice tool for analyzing performance. I really love using it. Large files are usually difficult to handle in GUI applications, which I think is what this bug reveals.

hotspot_crash.data is saved by cargo-flamegraph command.

It is attached here in a zstd compressed form. Due to github's limitation, it is again compressed with gzip before uploading:
hotspot_crash.data.zst.gz
@kxxt kxxt added the bug label May 3, 2024
lievenhey added a commit that referenced this issue May 13, 2024
@lievenhey
fix: crash if samples have different amount of costs associated
1255426 
If we have a recording with the following layout: A B C where
A: part where function f is accessed
B: list samples
C: part where function g is accessed
then f won't have the lost events cost while g does.
This will cause a crash when the model tries to access it

fixes: #629
@lievenhey lievenhey mentioned this issue May 13, 2024
Merged
lievenhey added a commit that referenced this issue May 13, 2024
@lievenhey
fix: crash if samples have different amount of costs associated
93ec535 
If we have a recording with the following layout: A B C where
A: part where function f is accessed
B: list samples
C: part where function g is accessed
then f won't have the lost events cost while g does.
This will cause a crash when the model tries to access it

fixes: #629
@lievenhey
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Hi,
thanks for finding this bug. I hope I have found the issue. I was able to open your dump with the following appimage.

Can you try again with that version to see if it fixed the bug?

@kxxt
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kxxt commented May 13, 2024

Hi, thanks for finding this bug. I hope I have found the issue. I was able to open your dump with the following appimage.

Can you try again with that version to see if it fixed the bug?

Hi, thanks for your fix. I can confirm that the bug is fixed by your PR.

lievenhey added a commit that referenced this issue May 16, 2024
@lievenhey
fix: add a wrapper for std::valarray to catch out of range access
b3f5224 
If we have a recording with the following layout: A B C where A: part
where function f is accessed
B: list samples
C: part where function g is accessed
then f won't have the lost events cost while g does. This will cause a
crash when the model tries to access it.

This patch replaces the typedef ItemCost with a real wrapper that will
catch the out range access.

fixes: #629
lievenhey added a commit that referenced this issue May 16, 2024
@lievenhey
fix: add a wrapper for std::valarray to catch out of range access
f63d01f 
If we have a recording with the following layout: A B C where A: part
where function f is accessed
B: list samples
C: part where function g is accessed
then f won't have the lost events cost while g does. This will cause a
crash when the model tries to access it.

This patch replaces the typedef ItemCost with a real wrapper that will
catch the out range access.

fixes: #629
lievenhey added a commit that referenced this issue May 16, 2024
@lievenhey
fix: add a wrapper for std::valarray to catch out of range access
b695535 
If we have a recording with the following layout: A B C where A: part
where function f is accessed
B: list samples
C: part where function g is accessed
then f won't have the lost events cost while g does. This will cause a
crash when the model tries to access it.

This patch replaces the typedef ItemCost with a real wrapper that will
catch the out range access.

fixes: #629
lievenhey added a commit that referenced this issue May 16, 2024
@lievenhey
fix: add a wrapper for std::valarray to catch out of range access
96603d4 
If we have a recording with the following layout: A B C where A: part
where function f is accessed
B: list samples
C: part where function g is accessed
then f won't have the lost events cost while g does. This will cause a
crash when the model tries to access it.

This patch replaces the typedef ItemCost with a real wrapper that will
catch the out range access.

fixes: #629
lievenhey added a commit that referenced this issue May 16, 2024
@lievenhey
fix: add a wrapper for std::valarray to catch out of range access
637a8d7 
If we have a recording with the following layout: A B C where A: part
where function f is accessed
B: list samples
C: part where function g is accessed
then f won't have the lost events cost while g does. This will cause a
crash when the model tries to access it.

This patch replaces the typedef ItemCost with a real wrapper that will
catch the out range access.

fixes: #629
lievenhey added a commit that referenced this issue May 17, 2024
@lievenhey
fix: add a wrapper for std::valarray to catch out of range access
6f289bd 
If we have a recording with the following layout: A B C where A: part
where function f is accessed
B: list samples
C: part where function g is accessed
then f won't have the lost events cost while g does. This will cause a
crash when the model tries to access it.

This patch replaces the typedef ItemCost with a real wrapper that will
catch the out range access.

fixes: #629
lievenhey added a commit that referenced this issue May 17, 2024
@lievenhey
fix: add a wrapper for std::valarray to catch out of range access
58fba35 
If we have a recording with the following layout: A B C where A: part
where function f is accessed
B: lost samples
C: part where function g is accessed
then f won't have the lost events cost while g does. This will cause a
crash when the model tries to access it.

This patch replaces the typedef ItemCost with a real wrapper that will
catch the out range access.

fixes: #629
milianw pushed a commit that referenced this issue May 23, 2024
@lievenhey @milianw
fix: add a wrapper for std::valarray to catch out of range access
d8de369 
If we have a recording with the following layout: A B C where A: part
where function f is accessed
B: lost samples
C: part where function g is accessed
then f won't have the lost events cost while g does. This will cause a
crash when the model tries to access it.

This patch replaces the typedef ItemCost with a real wrapper that will
catch the out range access.

fixes: #629
@github-actions github-actions bot mentioned this issue May 23, 2024
Closed
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fix: crash if samples have different amount of costs associated KDAB/hotspot
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@kxxt @lievenhey