Re: Bash's malloc does not work within qemu-user when compiled with PIE enabled

2018-02-14 Thread Raphael Hertzog
On Tue, 13 Feb 2018, Chet Ramey wrote: > > Note that a bash binary compiled with PIE works fine for normal usage > > with a current Linux kernel. Apparently it was causing troubles with > > older Linux kernels, see > > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1518483 > > > > But with

Re: Bash's malloc does not work within qemu-user when compiled with PIE enabled

2018-02-13 Thread Raphael Hertzog
Hello, On Tue, 13 Feb 2018, Chet Ramey wrote: > > It would be nice if bash's malloc implementation could be fixed to also > > work under qemu-user. > > Does sbrk(2) work in a PIE-enabled environment? Note that a bash binary compiled with PIE works fine for normal usage with a current Linux kerne

Bash's malloc does not work within qemu-user when compiled with PIE enabled

2018-02-13 Thread Raphael Hertzog
Hello, in Debian we wanted to build bash with PIE enabled [1], but we discovered that bash was broken under qemu-user when it was compiled that way [2]. It turns out that it's broken only when it uses bash's malloc implementation. If we build bash with PIE and --without-bash-malloc then we don't