| Patch | Description | Author | Forwarded | Bugs | Origin | Last update |
|---|---|---|---|---|---|---|
| 0001-Disable-default-autostart.patch | Disable default autostart | Boyuan Yang <073plan@gmail.com> | not-needed | 2017-09-13 | ||
| backport/0002-mdx-don-t-copy-a-shared-sptr-concurrently.patch | mdx: don't copy a shared sptr concurrently ThreadSanitizer reports a data race: Read of size 4 at 0x7b040003edb0 by thread T19: #0 sptr_base<Mdx::IndexedMdd>::increment() ../sptr.hh:23 #1 sptr_base<Mdx::IndexedMdd>::sptr_base(sptr_base<Mdx::IndexedMdd> const&) ../sptr.hh:35 #2 sptr<Mdx::IndexedMdd>::sptr(sptr<Mdx::IndexedMdd> const&) ../sptr.hh:93 #3 Mdx::MddResourceRequest::run() ../mdx.cc:849 #4 Mdx::MddResourceRequestRunnable::run() ../mdx.cc:791 #5 <null> <null> (libQt5Core.so.5+0xe8710) Previous write of size 4 at 0x7b040003edb0 by thread T18: #0 sptr_base<Mdx::IndexedMdd>::increment() ../sptr.hh:23 #1 sptr_base<Mdx::IndexedMdd>::sptr_base(sptr_base<Mdx::IndexedMdd> const&) ../sptr.hh:35 #2 sptr<Mdx::IndexedMdd>::sptr(sptr<Mdx::IndexedMdd> const&) ../sptr.hh:93 #3 Mdx::MddResourceRequest::run() ../mdx.cc:849 #4 Mdx::MddResourceRequestRunnable::run() ../mdx.cc:791 #5 <null> <null> (libQt5Core.so.5+0xe8710) dict.mddResources is shared and accessed concurrently by several separate MddResourceRequest objects. The line `sptr< IndexedMdd > mddResource = *i;` contains a data race, because sptr is not thread-safe as sptr_base::count is not atomic. MdxDictionary::mddResources and its elements are not modified after the initialization in MdxDictionary::doDeferredInit(). Simply dereference the pointer instead of copying a sptr element of mddResources to eliminate the data race. The crash reported in #1653 may be caused by this data race. Apply the same fix to duplicate code in MdxDictionary::getCachedFileName(). |
Igor Kushnir <igorkuo@gmail.com> | no | 2023-06-10 |