Starting around summer of 2021, we've started to receive crash reports (SIGBUS, SIGSEGV) on Linux originating from libawt_xawt.so with stack frames falling into the following three categories. Neither of those were reproduced on site.
The crashes seem to be related to the backport of JDK-8076313 to JetBrains Runtime.

Current thread (0x00007f97ec0f3800): JavaThread "AWT-EventQueue-0" [_thread_in_native, id=110867, stack(0x00007f97d2e1a000,0x00007f97d301b000)]

Stack: [0x00007f97d2e1a000,0x00007f97d301b000], sp=0x00007f97d3015f10, free space=2031k
Native frames: (J=compiled Java code, A=aot compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [libawt_xawt.so+0x366c3] Java_sun_awt_X11GraphicsDevice_getConfigColormap+0x73
j sun.awt.X11GraphicsDevice.getConfigColormap(II)I+0 java.desktop@11.0.11
j sun.awt.X11GraphicsDevice.makeDefaultConfiguration()V+172 java.desktop@11.0.11
J 105853 c2 sun.awt.X11GraphicsDevice.getDefaultConfiguration()Ljava/awt/GraphicsConfiguration; java.desktop@11.0.11 (33 bytes) @ 0x00007f986e1bb770 [0x00007f986e1bb6c0+0x00000000000000b0]
J 106313 c2 javax.swing.BufferStrategyPaintManager.paint(Ljavax/swing/JComponent;Ljavax/swing/JComponent;Ljava/awt/Graphics;IIII)Z java.desktop@11.0.11 (235 bytes) @ 0x00007f986e2eaf68 [0x00007f986e2e8e00+0x0000000000002168]
J 98318 c2 javax.swing.JComponent.paint(Ljava/awt/Graphics;)V java.desktop@11.0.11 (409 bytes) @ 0x00007f986d73d38c [0x00007f986d73cc60+0x000000000000072c]
J 73257 c1 java.awt.GraphicsCallback$PaintCallback.run(Ljava/awt/Component;Ljava/awt/Graphics;)V java.desktop@11.0.11 (6 bytes) @ 0x00007f985b59d0c4 [0x00007f985b59cfc0+0x0000000000000104]
J 73254 c1 sun.awt.SunGraphicsCallback.runOneComponent(Ljava/awt/Component;Ljava/awt/Rectangle;Ljava/awt/Graphics;Ljava/awt/Shape;I)V java.desktop@11.0.11 (177 bytes) @ 0x00007f986012cbac [0x00007f986012b5e0+0x00000000000015cc]
J 73253 c1 sun.awt.SunGraphicsCallback.runComponents([Ljava/awt/Component;Ljava/awt/Graphics;I)V java.desktop@11.0.11 (167 bytes) @ 0x00007f985ebfee14 [0x00007f985ebfe6a0+0x0000000000000774]
j java.awt.Container.paint(Ljava/awt/Graphics;)V+58 java.desktop@11.0.11
J 62857 c1 java.awt.Window.paint(Ljava/awt/Graphics;)V java.desktop@11.0.11 (72 bytes) @ 0x00007f985f4a520c [0x00007f985f4a4540+0x0000000000000ccc]
...


C [libawt_xawt.so+0x36403] Java_sun_awt_X11GraphicsDevice_getConfigVisualId+0x73
j sun.awt.X11GraphicsDevice.getConfigVisualId(II)I+0 java.desktop@11.0.11
j sun.awt.X11GraphicsDevice.makeDefaultConfiguration()V+13 java.desktop@11.0.11
j sun.awt.X11GraphicsDevice.getDefaultConfiguration()Ljava/awt/GraphicsConfiguration;+15 java.desktop@11.0.11
j javax.swing.RepaintManager.getDoubleBufferMaximumSize()Ljava/awt/Dimension;+46 java.desktop@11.0.11
j javax.swing.RepaintManager.getVolatileOffscreenBuffer(Ljava/awt/Component;II)Ljava/awt/Image;+98 java.desktop@11.0.11
j javax.swing.RepaintManager$PaintManager.paint(Ljavax/swing/JComponent;Ljavax/swing/JComponent;Ljava/awt/Graphics;IIII)Z+35 java.desktop@11.0.11
J 26358 c1 javax.swing.BufferStrategyPaintManager.paint(Ljavax/swing/JComponent;Ljavax/swing/JComponent;Ljava/awt/Graphics;IIII)Z java.desktop@11.0.11 (235 bytes) @ 0x00007f9623e63874 [0x00007f9623e63380+0x00000000000004f4]
J 25815 c1 javax.swing.RepaintManager.paint(Ljavax/swing/JComponent;Ljavax/swing/JComponent;Ljava/awt/Graphics;IIII)V java.desktop@11.0.11 (93 bytes) @ 0x00007f9623c30974 [0x00007f9623c30680+0x00000000000002f4]
J 36174 c2 javax.swing.JComponent.paint(Ljava/awt/Graphics;)V java.desktop@11.0.11 (409 bytes) @ 0x00007f9631a49448 [0x00007f9631a48c60+0x00000000000007e8]
...


C [libX11.so.6+0x31154] XVisualIDFromVisual+0x4
C [libawt_xawt.so+0x3514f] getAllConfigs+0x90f
C [libawt_xawt.so+0x363e6] Java_sun_awt_X11GraphicsDevice_getConfigVisualId+0x56
j sun.awt.X11GraphicsDevice.getConfigVisualId(II)I+0 java.desktop@11.0.11
j sun.awt.X11GraphicsDevice.makeDefaultConfiguration()V+13 java.desktop@11.0.11
J 50467 c1 sun.awt.X11GraphicsDevice.getDefaultConfiguration()Ljava/awt/GraphicsConfiguration; java.desktop@11.0.11 (33 bytes) @ 0x00007f429ee79a14 [0x00007f429ee79860+0x00000000000001b4]
J 41966 c1 javax.swing.RepaintManager.getDoubleBufferMaximumSize()Ljava/awt/Dimension; java.desktop@11.0.11 (134 bytes) @ 0x00007f429cf0be1c [0x00007f429cf0b640+0x00000000000007dc]
J 34245 c1 javax.swing.RepaintManager.getVolatileOffscreenBuffer(Ljava/awt/Component;II)Ljava/awt/Image; java.desktop@11.0.11 (243 bytes) @ 0x00007f429cb67744 [0x00007f429cb67020+0x0000000000000724]
J 42055 c1 javax.swing.RepaintManager$PaintManager.paint(Ljavax/swing/JComponent;Ljavax/swing/JComponent;Ljava/awt/Graphics;IIII)Z java.desktop@11.0.11 (201 bytes) @ 0x00007f429d0225b4 [0x00007f429d022320+0x0000000000000294]
J 21887 c1 javax.swing.BufferStrategyPaintManager.paint(Ljavax/swing/JComponent;Ljavax/swing/JComponent;Ljava/awt/Graphics;IIII)Z java.desktop@11.0.11 (235 bytes) @ 0x00007f429f195874 [0x00007f429f195380+0x00000000000004f4]
J 38591 c1 javax.swing.RepaintManager.paint(Ljavax/swing/JComponent;Ljavax/swing/JComponent;Ljava/awt/Graphics;IIII)V java.desktop@11.0.11 (93 bytes) @ 0x00007f429f2f18fc [0x00007f429f2f13c0+0x000000000000053c]
J 36546 c2 javax.swing.JComponent.paint(Ljava/awt/Graphics;)V java.desktop@11.0.11 (409 bytes) @ 0x00007f42ada94594 [0x00007f42ada93e00+0x0000000000000794]

...
(stacks trimmed for clarity).