* write() to zero length framebuffer -- bug report
@ 2005-12-13 14:33 Jenkins, Clive
2005-12-13 15:36 ` Antonino A. Daplas
0 siblings, 1 reply; 2+ messages in thread
From: Jenkins, Clive @ 2005-12-13 14:33 UTC (permalink / raw)
To: linux-fbdev-devel
In the vanilla 2.4.20 kernel version of fbmem.c, the function
fb_write() returns zero if the framebuffer size (fix.smem_size)
is zero, instead of -ENOSPC. This causes a normal user program
to loop forever.
Looking at the code for vanilla 2.6.10 and 2.6.11, the situation
is complicated by the new info.screen_size and kmalloc-ing a
buffer, but the bug is still there.
Clive
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* Re: write() to zero length framebuffer -- bug report
2005-12-13 14:33 write() to zero length framebuffer -- bug report Jenkins, Clive
@ 2005-12-13 15:36 ` Antonino A. Daplas
0 siblings, 0 replies; 2+ messages in thread
From: Antonino A. Daplas @ 2005-12-13 15:36 UTC (permalink / raw)
To: linux-fbdev-devel; +Cc: Jenkins, Clive
Jenkins, Clive wrote:
> In the vanilla 2.4.20 kernel version of fbmem.c, the function
> fb_write() returns zero if the framebuffer size (fix.smem_size)
> is zero, instead of -ENOSPC. This causes a normal user program
> to loop forever.
>
> Looking at the code for vanilla 2.6.10 and 2.6.11, the situation
> is complicated by the new info.screen_size and kmalloc-ing a
> buffer, but the bug is still there.
Thank you. Will fix.
Tony
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2005-12-13 14:33 write() to zero length framebuffer -- bug report Jenkins, Clive
2005-12-13 15:36 ` Antonino A. Daplas
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