fixed fuzzing crash#6005
Merged
Merged
Conversation
==332324==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000030 (pc 0x5602eb271504 bp 0x7ffe7cc5b430 sp 0x7ffe7cc5b420 T0)
==332324==The signal is caused by a READ memory access.
==332324==Hint: address points to the zero page.
#0 0x5602eb271504 in previous /home/user/CLionProjects/cppcheck-rider/oss-fuzz/../lib/token.h:867:16
#1 0x5602eb271504 in tokAtImpl<const Token, void> /home/user/CLionProjects/cppcheck-rider/oss-fuzz/build/token.cpp:796:20
cppcheck-opensource#2 0x5602eb271504 in tokAt /home/user/CLionProjects/cppcheck-rider/oss-fuzz/build/token.cpp:804:12
cppcheck-opensource#3 0x5602eb271504 in Token::strAt[abi:cxx11](int) const /home/user/CLionProjects/cppcheck-rider/oss-fuzz/build/token.cpp:834:30
cppcheck-opensource#4 0x5602ea7a2a76 in skipPointers(Token const*) /home/user/CLionProjects/cppcheck-rider/oss-fuzz/build/symboldatabase.cpp:7573:18
cppcheck-opensource#5 0x5602ea7a4555 in skipPointersAndQualifiers(Token const*) /home/user/CLionProjects/cppcheck-rider/oss-fuzz/build/symboldatabase.cpp:7588:11
cppcheck-opensource#6 0x5602ea79fc18 in Scope::isVariableDeclaration(Token const*, Token const*&, Token const*&) const /home/user/CLionProjects/cppcheck-rider/oss-fuzz/build/symboldatabase.cpp:7639:27
cppcheck-opensource#7 0x5602ea704b0b in Scope::checkVariable(Token const*, AccessControl, Settings const&) /home/user/CLionProjects/cppcheck-rider/oss-fuzz/build/symboldatabase.cpp:7520:16
cppcheck-opensource#8 0x5602ea79adc0 in Scope::getVariableList(Settings const&, Token const*, Token const*) /home/user/CLionProjects/cppcheck-rider/oss-fuzz/build/symboldatabase.cpp:7466:15
cppcheck-opensource#9 0x5602ea6b687d in getVariableList /home/user/CLionProjects/cppcheck-rider/oss-fuzz/build/symboldatabase.cpp:7358:9
cppcheck-opensource#10 0x5602ea6b687d in SymbolDatabase::createSymbolDatabaseVariableInfo() /home/user/CLionProjects/cppcheck-rider/oss-fuzz/build/symboldatabase.cpp:3376:15
cppcheck-opensource#11 0x5602ea699ec3 in SymbolDatabase::SymbolDatabase(Tokenizer&, Settings const&, ErrorLogger*) /home/user/CLionProjects/cppcheck-rider/oss-fuzz/build/symboldatabase.cpp:2616:5
cppcheck-opensource#12 0x5602ea4e75f7 in createSymbolDatabase /home/user/CLionProjects/cppcheck-rider/oss-fuzz/build/tokenize.cpp:17214:31
cppcheck-opensource#13 0x5602ea4e75f7 in Tokenizer::simplifyTokens1(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const&) /home/user/CLionProjects/cppcheck-rider/oss-fuzz/build/tokenize.cpp:10687:9
cppcheck-opensource#14 0x5602eae99afd in CppCheck::checkFile(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const&, std::istream*) /home/user/CLionProjects/cppcheck-rider/oss-fuzz/build/cppcheck.cpp:909:32
cppcheck-opensource#15 0x5602eaea4e81 in CppCheck::check(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const&) /home/user/CLionProjects/cppcheck-rider/oss-fuzz/build/cppcheck.cpp:561:12
cppcheck-opensource#16 0x5602eb321fa4 in LLVMFuzzerTestOneInput /home/user/CLionProjects/cppcheck-rider/oss-fuzz/main.cpp:47:18
cppcheck-opensource#17 0x5602e9feb1e8 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) (/home/user/CLionProjects/cppcheck-rider/oss-fuzz/oss-fuzz-client+0x6831e8) (BuildId: 0f5e574f57ecf785c77394bbb6c8fcd6e24d8c57)
cppcheck-opensource#18 0x5602e9febec0 in fuzzer::Fuzzer::RunOne(unsigned char const*, unsigned long, bool, fuzzer::InputInfo*, bool, bool*) (/home/user/CLionProjects/cppcheck-rider/oss-fuzz/oss-fuzz-client+0x683ec0) (BuildId: 0f5e574f57ecf785c77394bbb6c8fcd6e24d8c57)
cppcheck-opensource#19 0x5602e9fecf51 in fuzzer::Fuzzer::MutateAndTestOne() (/home/user/CLionProjects/cppcheck-rider/oss-fuzz/oss-fuzz-client+0x684f51) (BuildId: 0f5e574f57ecf785c77394bbb6c8fcd6e24d8c57)
cppcheck-opensource#20 0x5602e9fedd77 in fuzzer::Fuzzer::Loop(std::vector<fuzzer::SizedFile, std::allocator<fuzzer::SizedFile>>&) (/home/user/CLionProjects/cppcheck-rider/oss-fuzz/oss-fuzz-client+0x685d77) (BuildId: 0f5e574f57ecf785c77394bbb6c8fcd6e24d8c57)
cppcheck-opensource#21 0x5602e9fce262 in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) (/home/user/CLionProjects/cppcheck-rider/oss-fuzz/oss-fuzz-client+0x666262) (BuildId: 0f5e574f57ecf785c77394bbb6c8fcd6e24d8c57)
cppcheck-opensource#22 0x5602e9f53f77 in main (/home/user/CLionProjects/cppcheck-rider/oss-fuzz/oss-fuzz-client+0x5ebf77) (BuildId: 0f5e574f57ecf785c77394bbb6c8fcd6e24d8c57)
cppcheck-opensource#23 0x7f9479558ccf (/usr/lib/libc.so.6+0x27ccf) (BuildId: 8bfe03f6bf9b6a6e2591babd0bbc266837d8f658)
cppcheck-opensource#24 0x7f9479558d89 in __libc_start_main (/usr/lib/libc.so.6+0x27d89) (BuildId: 8bfe03f6bf9b6a6e2591babd0bbc266837d8f658)
cppcheck-opensource#25 0x5602e9fb8004 in _start (/home/user/CLionProjects/cppcheck-rider/oss-fuzz/oss-fuzz-client+0x650004) (BuildId: 0f5e574f57ecf785c77394bbb6c8fcd6e24d8c57)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /home/user/CLionProjects/cppcheck-rider/oss-fuzz/../lib/token.h:867:16 in previous
Collaborator
Author
|
The trace is in the individual commit message. I also did not minimize the code. I was a bit too optimistic in my previous PR. This is the last one which is easy to fix. The remaining ones (which are even blocking finding further issues) are an assert and an infinite loop which cannot be simply fixed by checking for a null pointer. I will file tickets about those nonetheless. I will not pursuing this that much further for now and will file tickets about further steps. |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
No description provided.