On Okt 04 2021, Chet Ramey wrote: > On 10/3/21 11:59 PM, Julien Moutinho wrote: >> Bash Version: 5.1 >> Patch Level: 8 >> Release Status: release >> Architecture: x86_64-linux >> >> Description: >> >> bash-5.1 reaches crashing code paths >> when launched by systemd-249 or valgrind. >> I cannot get such crashes when bash is built using: >> ./configure --without-bash-malloc > > I suspect this is a buffer overflow introduced between systemd-247 and > systemd-249. It's not caught when building bash without the bash malloc > because the default libc malloc probably doesn't do the bounds checking > the bash malloc does, even without malloc debugging turned on.
If it's a buffer overflow, then valgrind should be able to catch it (when bash is configured --without-bash-malloc). valgrind's bounds checking is much more advanced than what a checking malloc can do. Andreas. -- Andreas Schwab, sch...@linux-m68k.org GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1 "And now for something completely different."
