https://bugs.freedesktop.org/show_bug.cgi?id=105611

Bug ID: 105611 Summary: Alt-Tabbing in kwin results in SIGSEV in radeonsi Product: Mesa Version: 17.3 Hardware: Other OS: All Status: NEW Severity: normal Priority: medium Component: Drivers/Gallium/radeonsi Assignee: dri-devel@lists.freedesktop.org Reporter: linuxhippy@gmail.com QA Contact: dri-devel@lists.freedesktop.org

Alt+Tab on my kaveri 7650k system with 4k+full-hd screens (amdgpu, linux-4.15.9, mesa-17.3.6) running kde/kwin with compositor enabled results in:

Thread 26 "gallium_drv:0" received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7fff63fff700 (LWP 9101)] si_draw_vbo (ctx=0x555556963dc0, info=0x5555569d7be8) at si_state_draw.c:1372 1372 } else if (sctx->b.chip_class <= CIK && #0 0x00007fffc37fa890 in si_draw_vbo (ctx=0x555556963dc0, info=0x5555569d7be8) at si_state_draw.c:1372 sctx = 0x555556963dc0 rs = <optimized out> indexbuf = 0x0 dirty_tex_counter = <optimized out> rast_prim = <optimized out> index_size = 2 index_offset = 0 #1 0x00007fffc351d593 in tc_call_draw_vbo (pipe=<optimized out>, payload=0x5555569d7be8) at util/u_threaded_context.c:1816 info = 0x5555569d7be8 #2 0x00007fffc351a990 in tc_batch_execute (job=job@entry=0x5555569d7340, thread_index=thread_index@entry=0) at util/u_threaded_context.c:94 iter = 0x5555569d7be0 batch = 0x5555569d7340 pipe = 0x555556963dc0 last = 0x5555569d7fa0 #3 0x00007fffc33e2fda in util_queue_thread_func (input=input@entry=0x55555688f1c0) at u_queue.c:187 job = {job = 0x5555569d7340, fence = 0x5555569d7350, execute = 0x7fffc351a950 <tc_batch_execute>, cleanup = 0x0} queue = 0x5555569d5978 thread_index = 0 #4 0x00007fffc33e2e67 in impl_thrd_routine (p=<optimized out>) at ../../include/c11/threads_posix.h:87 pack = {func = 0x7fffc33e2ea0 <util_queue_thread_func>, arg = 0x55555688f1c0} #5 0x00007ffff02e050b in start_thread () at /lib64/libpthread.so.0 #6 0x00007fffecaa716f in clone () at /lib64/libc.so.6