Bug 1732512
| Summary: | Xvnc server crashed by tk-based application. | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Paweł Sikora <pawel_sikora> |
| Component: | xorg-x11-server | Assignee: | X/OpenGL Maintenance List <xgl-maint> |
| Status: | CLOSED EOL | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 30 | CC: | abrahm.scully, bskeggs, caillon+fedoraproject, fedora, jglisse, jgrulich, john.j5live, ofourdan, ossman, rhughes, rstrode, sandmann, twaugh, vonsch, xgl-maint |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2020-05-26 18:10:58 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Upstream says it's an issue in Xorg server. Upstream bug: https://github.com/TigerVNC/tigervnc/issues/853 This message is a reminder that Fedora 30 is nearing its end of life. Fedora will stop maintaining and issuing updates for Fedora 30 on 2020-05-26. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a Fedora 'version' of '30'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 30 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. Fedora 30 changed to end-of-life (EOL) status on 2020-05-26. Fedora 30 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed. |
hi, i've noticed that some 3rd-party tk-based application causing a tigervnc-server-1.9.0-4.fc30.x86_64 server crash. as you can see the tigervnc passes to memcpy negatice __len value. (gdb) fr 1 #1 0x000056043df40e79 in memcpy (__len=18446744073709551528, __src=<optimized out>, __dest=<optimized out>) at /usr/include/bits/string_fortified.h:34 warning: Source file is more recent than executable. 34 return __builtin___memcpy_chk (__dest, __src, __len, __bos0 (__dest)); (gdb) p/x __len $1 = 0xffffffffffffffa8 % gdb /usr/bin/Xvnc --core core.8583 GNU gdb (GDB) Fedora 8.3-6.fc30 (...) Reading symbols from /usr/bin/Xvnc... Reading symbols from /usr/lib/debug/usr/bin/Xvnc-1.9.0-4.fc30.x86_64.debug... (...) Core was generated by `/usr/bin/Xvnc'. Program terminated with signal SIGSEGV, Segmentation fault. #0 __memmove_avx_unaligned_erms () at ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:534 534 VMOVU -(VEC_SIZE * 2)(%rcx), %VEC(2) [Current thread is 1 (Thread 0x7fc91ca2cb40 (LWP 8583))] (gdb) bt #0 __memmove_avx_unaligned_erms () at ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:534 #1 0x000056043df40e79 in memcpy (__len=18446744073709551528, __src=<optimized out>, __dest=<optimized out>) at /usr/include/bits/string_fortified.h:34 #2 fbBlt (srcLine=<optimized out>, srcStride=srcStride@entry=1004, srcX=<optimized out>, dstLine=<optimized out>, dstStride=dstStride@entry=1004, dstX=<optimized out>, width=-704, height=113, alu=3, pm=4294967295, bpp=32, reverse=1, upsidedown=0) at fbblt.c:82 #3 0x000056043df4e13d in fbCopyNtoN (pSrcDrawable=pSrcDrawable@entry=0x56044031c970, pDstDrawable=pDstDrawable@entry=0x56044031c970, pGC=pGC@entry=0x56043e5a3f20, pbox=0x7ffd783e89c0, nbox=<optimized out>, nbox@entry=1, dx=dx@entry=-218, dy=0, reverse=1, upsidedown=0, bitplane=0, closure=0x0) at fbcopy.c:69 #4 0x000056043e099993 in miCopyRegion (pSrcDrawable=pSrcDrawable@entry=0x56044031c970, pDstDrawable=pDstDrawable@entry=0x56044031c970, pGC=pGC@entry=0x56043e5a3f20, pDstRegion=pDstRegion@entry=0x7ffd783e89c0, dx=dx@entry=-218, dy=dy@entry=0, copyProc=0x56043df4def0 <fbCopyNtoN>, bitPlane=0, closure=0x0) at micopy.c:121 #5 0x000056043e09a0f6 in miDoCopy (pSrcDrawable=0x56044031c970, pDstDrawable=0x56044031c970, pGC=0x56043e5a3f20, xIn=552, yIn=39, widthSrc=65514, heightSrc=113, xOut=770, yOut=39, copyProc=0x56043df4def0 <fbCopyNtoN>, bitPlane=0, closure=0x0) at micopy.c:296 #6 0x000056043df4e726 in fbCopyArea (pSrcDrawable=<optimized out>, pDstDrawable=<optimized out>, pGC=<optimized out>, xIn=<optimized out>, yIn=<optimized out>, widthSrc=<optimized out>, heightSrc=113, xOut=770, yOut=39) at fbcopy.c:244 #7 0x000056043dfc3ef6 in damageCopyArea (pSrc=0x56044031c970, pDst=0x56044031c970, pGC=0x56043e5a3f20, srcx=<optimized out>, srcy=<optimized out>, width=65514, height=113, dstx=770, dsty=39) at damage.c:775 #8 0x000056043e05b55d in ProcCopyArea (client=0x56043e63b420) at dispatch.c:1721 #9 0x000056043e05fabb in Dispatch () at dispatch.c:478 #10 0x000056043e063b04 in dix_main (argc=17, argv=0x7ffd783e8cd8, envp=<optimized out>) at main.c:276 #11 0x00007fc91d1c2f33 in __libc_start_main (main=0x56043df3a790 <main>, argc=17, argv=0x7ffd783e8cd8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd783e8cc8) at ../csu/libc-start.c:308 #12 0x000056043df3be7e in _start () at dispatch.c:357