Created attachment 14280 [details] nm-new testcases Hello, I detected the memory leak and dead loop problems through fuzz testing, which I think be a vulnerability. The configuration of binutils is: $ ./configure --disable-shared && make -j and compiled with gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0 I use the program nm-new in ~/binutils-gdb/binutils/nm-new with parameter "-C ./dead_loop_input", and after waiting 1 hours, the program neither giving any outputs nor terminating. What is more, the program nm-new occupied all the memory. The testcase that trigger such results are in the attachment. Thanks & Best Regards
The endless looping is all in the rust demangler. Please report these bugs to the gcc project at https://gcc.gnu.org/bugzilla/ It is helpful to report the symbols being demangled rather than supply object files. They are: 1) _RYXBAL_OFFGLOBTABLE_ 2) _RYFGNUSLT_FHStNB10ay_start 3) _RYDGLOBOFFSET_TABLE_ 4) _RYFGDIC6gnu_compilediBtOhighlightEH_FRAME_HDR 5) _RYFUDGC6ShigdefaulttiBtOhighlightEH_FRAME_HDR 6) _RYFUDGC6Shighdignu_compiledhlightEH_FRAME_HDR 7) _RYFIMYeB_xDGLtSarray_start 8) _RYdMMYTopFinFGAarral_start 9) _RMYADGC0hdpnit_Grray_start 10) _RYNSMICu2FiFGtDBrray_s 11) _RYTOdPjesistePDGC1onRLab_e 12) _RIYADGO0Rdpnit_Grray_start
(In reply to Alan Modra from comment #1) > The endless looping is all in the rust demangler. Please report these bugs > to the gcc project at https://gcc.gnu.org/bugzilla/ > > It is helpful to report the symbols being demangled rather than supply > object files. They are: > 1) _RYXBAL_OFFGLOBTABLE_ > 2) _RYFGNUSLT_FHStNB10ay_start > 3) _RYDGLOBOFFSET_TABLE_ > 4) _RYFGDIC6gnu_compilediBtOhighlightEH_FRAME_HDR > 5) _RYFUDGC6ShigdefaulttiBtOhighlightEH_FRAME_HDR > 6) _RYFUDGC6Shighdignu_compiledhlightEH_FRAME_HDR > 7) _RYFIMYeB_xDGLtSarray_start > 8) _RYdMMYTopFinFGAarral_start > 9) _RMYADGC0hdpnit_Grray_start > 10) _RYNSMICu2FiFGtDBrray_s > 11) _RYTOdPjesistePDGC1onRLab_e > 12) _RIYADGO0Rdpnit_Grray_start Thank you~