Summary:
Because in the real semantics CFRelease can be used more than once, and also the variables can be used after CFRelease in general, modelling this as `free` causes many `USE_AFTER_FREE` errors. Now we change the model to not add the `Invalid CFree` attribute, but to just remove the `Allocated` attribute. So we can model memory leaks in the simple case of `Create` and not `CFRelease` before going out of scope, but we avoid the `USE_AFTER_FREE`.
Since the model for CFRelease now diverges from free, changed the command line option for modelling to `pulse-model-release-pattern`.
Reviewed By: jvillard
Differential Revision: D21324895
fbshipit-source-id: ab323d981
Summary: This diff gets only one disjunct from blacklisted callee, in order to avoid OOMing in specific cases.
Reviewed By: jvillard
Differential Revision: D21406023
fbshipit-source-id: f9214c9c6
Summary:
List of things happening in this unreviewable diff:
- moved PulsePathCondition to PulseSledge
- renamed --pulse-path-conditions to --pudge
- PulsePathCondition now contains all the arithmetic of pulse
(inferbo+concrete intervals+pudge). In particular, moved arithmetic
attributes into PulsePathCondition.t. PulsePathCondition plays the
role of PulseArithmetic (combining all domains).
- added tests for a false positive involving free()
- PulseArithmetic is now just a thin wrapper around PulsePathCondition
to operate on states directly (instead of on path conditions).
- The rest is mostly moving code into PulsePathCondition (eg, from
PulseInterproc) and adjusting it.
Reviewed By: jberdine
Differential Revision: D21332073
fbshipit-source-id: 184c8e0a9
Summary:
Add a new data structure and use it for the map of memory accesses to
limit the number of destinations reachable from a given address. This
avoids remembering details of each index in large arrays, or even each
field in large structs.
Reviewed By: skcho
Differential Revision: D18246091
fbshipit-source-id: 5d3974d9c
Summary:
Good night, sweet prince. This was never used and hasn't seen progress
in a while.
Reviewed By: jberdine
Differential Revision: D21201932
fbshipit-source-id: e6f537b30
Summary:
In the previous diff we changed the semantics of nested classes w.r.t.
to Nullsafe.
Let's make it clear if users will attempt to misuse it.
Reviewed By: artempyanykh
Differential Revision: D21230717
fbshipit-source-id: 0ecc0dd06
Summary: Specialise the above option to `true` and remove resulting dead code.
Reviewed By: dulmarod
Differential Revision: D21177041
fbshipit-source-id: 4a1c65850
Summary: This option makes RacerD angelic wrt the ownership of returned objects from procedures without summary. This will now be made the default and the option deprecated up the diff stack.
Reviewed By: dulmarod
Differential Revision: D21174676
fbshipit-source-id: 9c48d3d7d
Summary:
It is true that `Info` issues are normally not intended for the end user
and in general should be hidden by default.
However, the current behavior - show them only if `--no-filtering` is
true - is super non-intuitive and complicates already complex reporting
logic.
Lets use the general "enable/disable" mechanism for controlling this.
Reviewed By: jvillard
Differential Revision: D21154140
fbshipit-source-id: 69e4c88e4
Summary: The flags `--biabduction-fallback-model-alloc-pattern` and `--biabduction-fallback-model-free-pattern` were unused because we removed the models from .inferconfig a while ago because of too many false positives. We are implementing a better memory leak check based on Pulse, and are adding the similar flags `--pulse-model-alloc-pattern` and `--pulse-model-free-pattern`.
Reviewed By: jvillard
Differential Revision: D21061511
fbshipit-source-id: 1b3476c22
Summary:
This is another entry in infer-out/, we want these to be predictable,
not user-defined.
Reviewed By: dulmarod
Differential Revision: D20894302
fbshipit-source-id: ee60ddbcf
Summary:
This is an entry in infer-out/, we want these to be predictable, not
user-defined.
Reviewed By: ngorogiannis
Differential Revision: D20894307
fbshipit-source-id: 332f85969
Summary:
This option allowed one to customise the name of the log file, but the
log file lives in infer-out/ so that flexibility is not needed and even
undesirable: we want entries in infer-out/ to be predictable.
Reviewed By: skcho
Differential Revision: D20894304
fbshipit-source-id: 760d91df3
Summary:
This information can be useful for tooling responsible for further
processing (e.g. metric calculation and logging)
Reviewed By: artempyanykh
Differential Revision: D20914583
fbshipit-source-id: 61804d88f
Summary:
This diff limits the depth of abstract location by a constant.
problem: Inferbo generated too many of abstract locations, especially when struct types had many pointer fields and Inferbo was not able to analyze the objects precisely. Since the number of generated abstract locations were exponential to the number of fields, it resulted in OOM in the end.
(reported by zyh1121 in https://github.com/facebook/infer/issues/1246)
Reviewed By: jvillard
Differential Revision: D20818471
fbshipit-source-id: f8af27e5c
Summary:
It's easy to create large arrays in code, eg `int x[1UL << 16];`, but
these can generate huge nodes in SIL because zero-initialization is
translated by zero-ing structures element by element. Introduce a
builtin to use instead. Keep the naive method for small structures (with
a configurable limit on "small").
Reviewed By: dulmarod
Differential Revision: D20836836
fbshipit-source-id: 6bf5410f8
Summary:
Re-implement the generation of an HTML report (with bug traces) in
OCaml.
Kills the --only-show as a side-effect, it is of dubious use since there
is already infer-out/report.txt to get the report list as text. A
follow-up diff adds numbers to the list in infer-out/report.txt for easy
cross-referencing with `infer explore --select 123`.
Reviewed By: skcho
Differential Revision: D20672769
fbshipit-source-id: 39b3a299d
Summary:
Hopefully no one uses this. This is in Python and we'd like to get rid
of it. Easy enough to either re-implement if needed or to be
re-implemented by a third party.
Reviewed By: ngorogiannis
Differential Revision: D20626344
fbshipit-source-id: 484022482
Summary:
Seems like a more sensible name. Most tooling should read report.json so
won't notice.
Still output a bugs.txt file with a message to point to report.txt while
people migrate.
Reviewed By: mityal, artempyanykh
Differential Revision: D20626111
fbshipit-source-id: efb84d098
Summary:
The documentation of `--quiet` dates back from when it applied only to
`InferPrint.ml`. Make it more general and more in line with
expectations one might have about a `--quiet` option:
- change the doc
- make it disable the progress bar
Reviewed By: ngorogiannis
Differential Revision: D20626110
fbshipit-source-id: db096fd31
Summary: Use the an LRUCache in Ondemand.LocalCache to avoid clearing it after every toplevel analysis.
Reviewed By: ngorogiannis
Differential Revision: D20281932
fbshipit-source-id: 752c8e1ea
Summary:
This is likely not the final refinement, rather one step forward.
We classify all classes by 3 categories:
- Nullsafe and 0 issues
- can add Nullsafe and will be 0 issues
- the rest (class needs improvement)
Each class will fall into exactly one category.
Error messaging is WIP, they are not intended to be surfaced to the user
just yet.
Note how this diff uses the result of the previous refactoring.
Reviewed By: artempyanykh
Differential Revision: D20512999
fbshipit-source-id: 7f462d29d
Summary: Add a flag `is-inclusive-cost` (`true` by default) which computes inclusive cost for each function. Setting the flag to `false` computes exclusive cost of the function where the cost of the callees are assumed to be `0`.
Reviewed By: skcho
Differential Revision: D20558275
fbshipit-source-id: 6b5798916
Summary:
First version of a new memory leak check based on Pulse. The idea is to examine unreachable cells in the heap and check that the "Allocated" attribute is available but the "Invalid CFree" isn't. This is done when we remove variables from the state.
Currently it only works for malloc, we can extend it to other allocation functions later.
Reviewed By: jvillard
Differential Revision: D20444097
fbshipit-source-id: 33b6b25a2
Summary:
This diff is doing three things:
1. Finishes work paved in D20115024, and applies it to nullsafe. In that diff, we hardened API for
file level analysis. Here we use this API in nullsafe, so now we can
analyze things on file-level, not only in proc-level like it was before!
2. Introduces a class-level analysis. For Nullsafe purposes, file is not
an interesting granularity, but we want to analyze a lot of things on
file level. Interesting part here is anonymous classes and how we link
them to their corresponding user-defined classes.
3. Introduces a first (yet to be improved) implementation of class-level
analysis. Namely it is "meta-issues" that tell what is going with class
on high level. For now these are two primitive issues, and we will
refine them in follow up diffs. They are disabled by default.
Follow ups include:
1. Refining semantics of meta-issues.
2. Adding other issues that we could not analyze before or analyzed not
user friendly. Most importantly, we will use it to improve reporting for
FIELD NOT INITIALIZED, which is not very user friendly exactly because
of lack of class-level aggregation.
Reviewed By: artempyanykh
Differential Revision: D20417841
fbshipit-source-id: 59ba7d2e3
Summary:
This was never quite finished and inferbo has a new way to do sort of
the same thing.
Reviewed By: skcho, ngorogiannis
Differential Revision: D20362619
fbshipit-source-id: 7c7935d47
Summary:
Make <infer-out>/report.json the default value for this option, as this
is what is used 99% of the time. Clean up test options using this.
Reviewed By: ngorogiannis
Differential Revision: D20362644
fbshipit-source-id: a1bb18757
Summary:
InferPrint hasn't been in charge of writing bugs.txt since forever.
This will be re-implemented as a post-processing of report.json instead
(like it is now, but in OCaml instead of python).
Reviewed By: ngorogiannis
Differential Revision: D20362641
fbshipit-source-id: 83d8cb53d
Summary:
I don't think anyone uses this. Meta-goal: cleaning up InferPrint.ml.
Measuring stats about summaries is good in principle, but we should do
it somewhere else instead of in the InferPrint callback hell. For
instance when we record each summary. Meanwhile, delete this.
Reviewed By: ngorogiannis
Differential Revision: D20362639
fbshipit-source-id: c73d431a5
Summary:
Warning: This might be a bit brutal.
PerfStats and EventLogger are pretty much subsumed by `ScubaLogging`.
It seems no one has been looking at the data they generate recently.
Let's delete them! If we need to re-implement some parts later on, let's
do that using `ScubaLogging`, which is better (eg, still produces data
when infer crashes).
Things we lose:
- errors in the clang frontend due to missing decl translation, etc.
- errors in biabduction due to timeouts, functions not found, etc.
We could also re-implement these using BackendStats and ScubaLogging
instead of brutally deleting everything.
Reviewed By: ngorogiannis
Differential Revision: D20343087
fbshipit-source-id: 90a3121ca
Summary:
The goals are to have all the checker definitions and documentation in one
place (except how to actually run them, since that's not quite the same
concept; for example inferbo is one checker but several analyses depend on its
symbolic execution), and later on to be able to link issues reported by infer
back to the checker that generated them.
This makes apparent that the documentation of our checkers is lacking,
not touching that in this diff.
Not sure if "analysis" would be a better name than "checker" at this
point? For instance "Linters" is one of the checkers, which historically
at least we have not considered to be the case.
Reviewed By: mityal
Differential Revision: D20252386
fbshipit-source-id: fc611bfb7
Summary:
Problem: `infer report <specs file name>` is called manually sometimes to see analysis results in CLI. However, giving the specs file name is sometimes annoying, because the specs file name may be quite long and include special characters sometimes.
This diff introduces `--procedures-summary` to lookup the summaries interactively in `infer explore`.
example1: There are 8 procedures that include "max" in their names, then I selected one of them by entering a number.
```
$ infer explore --procedures --procedures-filter '.*max.*' --procedures-summary
0: minmax_div_const2_Bad_FN
1: minmax_div_const_Good
2: use_int64_max_Bad
3: use_uint64_max_Good
4: use_int64_max_Good
5: minmax_div_const_Bad
6: minmax_div_const2_Good
7: use_uint64_max_Bad
Select one number (type 'a' for selecting all, 'q' for quit): 2
void use_int64_max_Bad()
Analyzed
ERRORS: BUFFER_OVERRUN_L1
WARNINGS:
FAILURE:NONE SYMOPS:0
BufferOverrunAnalysis: StackLocs: { } MemPure: { } Alias: { ret= }
BufferOverrunChecker: Safety conditions:
{ }
```
example2: If there is only one specs file that satisfies the given filter, it reports the summary of that procedure without an interaction.
```
$ infer explore --procedures --procedures-filter '.*add_in_loop_ok.*' --procedures-summary
Selected proc name: void ArrayListTest.add_in_loop_ok()
void void ArrayListTest.add_in_loop_ok()(ArrayListTest* this)
Analyzed
ERRORS:
WARNINGS:
FAILURE:NONE SYMOPS:0
BufferOverrunAnalysis: StackLocs: { } MemPure: { } Alias:
{ i=size(__new-390022197-0-1.elements), ret= }
LatestPrune: latest { i -> (5, { }, { }) by ((5, { }, { }) >= (5, { }, { })),
__new-390022197-0-1.elements -> (⊥, { }, { __new-390022197-1-1 -> length : 5 }) by ((5, { }, { }) >= (5, { }, { })) }
BufferOverrunChecker: Safety conditions:
{ }
```
Reviewed By: jvillard
Differential Revision: D20284052
fbshipit-source-id: 2131339f1
Summary: Add the possibility of passing Scuba tagsets through the command line arguments.
Reviewed By: ngorogiannis
Differential Revision: D20262807
fbshipit-source-id: 9134cce8f
Summary:
It's a lot of code to maintain for something that no one ever uses
anymore.
Reviewed By: ngorogiannis
Differential Revision: D20282794
fbshipit-source-id: 28422c415
Summary:
These were not used (and were actually activated byt the same config
param). They both are in experimental stage that never reached maturity.
Since the team does not have immediate plans to work on ObjC nullability
checker; and since "eradicate" (now known as nullsafe) is the main
solution for Java, removing it is sensible.
Reviewed By: jvillard
Differential Revision: D20279866
fbshipit-source-id: 79e64992b
Summary:
This diff renames `ZERO_XXX` issues to more appropriately named and descriptive
`XXX_UNREACHABLE_AT_EXIT` and replaces bottom with
unreachable in cost kinds and issues.
Reviewed By: skcho
Differential Revision: D20140301
fbshipit-source-id: eb6076b30
Summary:
The `--continue-analysis` option enables continuing analysis after more targets are captured by
`--continue`. For example,
```
$ infer capture -- buck build tgt1
$ infer analyze --merge
$ infer capture --continue -- bucck build tgt2
$ infer analyze --merge --continue-analyze
```
In the last analysis, it reuses the analysis results of `tgt1` from the previous analysis. If
`tgt1` and `tgt2` have a same dependency to a library, the analysis results of the library is also
reused.
Reviewed By: dulmarod
Differential Revision: D19996598
fbshipit-source-id: bb6874a6f
Summary:
Add support for nullsafe mode with `trust=all` and `trust=none` a case
with a specific trust list is not supported yet and needs to be
implemented separately.
Tests introduce one unexpected
`ERADICATE_INCONSISTENT_SUBCLASS_PARAMETER_ANNOTATION` issue which
complains about `this` having incorrect nullability; it is a bug and
needs to be fixed separately.
Reviewed By: mityal
Differential Revision: D19662708
fbshipit-source-id: 3bc1e3952
Summary: We don't use allocation costs in prod at the moment. There is no plan to do so in the near future. Let's not report them anymore and also save some space in `costs-report.json`.
Reviewed By: skcho
Differential Revision: D19766828
fbshipit-source-id: 06dffa61d
Summary:
This diff introduces two issue types: `BUFFER_OVERRUN_T1` and `INFERBO_ALLOC_IS_TAINTED`, which
denotes tainted values are used in array accesses and memory allocations, respectively.
Note that the taint analysis is intra-procedural for now.
Reviewed By: ezgicicek
Differential Revision: D19410536
fbshipit-source-id: af85148ec
Summary:
This diff adds a taint domain in Inferbo. The taint value will be used to find vulnerable array
accesses in the following diffs.
Reviewed By: ezgicicek
Differential Revision: D19391028
fbshipit-source-id: 566b4c0fe
Summary: This adds a check for when developers use weakSelf (and maybe strongSelf) in a block, when there is no need for it, because it won't cause a retain cycle. In general there is an annotation in Objective-C for methods that take blocks, NS_NOESCAPE, that means that the passed block won't leave the scope, i.e. is "no escaping". So we report when weakSelf is used and the block has the annotation.
Reviewed By: ngorogiannis
Differential Revision: D19662468
fbshipit-source-id: f5ac695aa
Summary:
Adding a new check as part of the SelfInBlock checker, for cases when a strong pointer to self, that is not self, is captured in the block.
This will cover the following wrong scenarios:
1. strongSelf is a local variable in a block as it should be, and then it's used in a sub-block, in which case it's a captured variable.
2. weakSelf is defined without the weak attribute by mistake.
Reviewed By: ngorogiannis
Differential Revision: D19538036
fbshipit-source-id: 151871745
Nikos Gorogiannis
Dulma Churchill
Sungkeun Cho
Jules Villard
Mitya Lyubarskiy
Fernando Gasperi Jabalera
Ezgi Çiçek
Artem Pianykh