Created attachment 104195 [details]
GDB backtrace of Dosbox crash.

Overview:
    SDL applications crash when changing video mode, "corrupted double-linked
list" and "double free or corruption" are printed to stderr. The applications
tested are Dosbox and Enemy Territory: Quake Wars.

Steps to reproduce:
    1) Install an abandonware game such as Commander Keen 4 
    2) Run it in Dosbox
    3) Depending on the game, press a key to start the game proper

Actual results:
    The application crashes upon changing video mode.

Expected results:
    The application changes video mode without causing a crash.

Build date and platform:
    Build date of all components: 2014-08-07
    Platform: Gentoo GNU/Linux x86_64
    Linux kernel version: 3.16

Additional information:
    Bisecting revealed the culprit commit to be
"58d2afa2232060b88f9c444ce7a0d6e63c841bb2: radeonsi: fix leaking the bound
state on destruction v2". See attachments for backtraces.