Dave Jones <[email protected]> wrote:
>
> On Thu, Dec 01, 2005 at 10:55:49AM -0500, Mark Lord wrote:
> > printk() returns a bytecount, which nothing actually appears to use.
>
> We do check it in a few places.
>
> arch/x86_64/kernel/traps.c: i += printk(" "); \
> arch/x86_64/kernel/traps.c: i += printk(" <%s> ", id);
> arch/x86_64/kernel/traps.c: i += printk(" <EOE> ");
> arch/x86_64/kernel/traps.c: i += printk(" <IRQ> ");
> arch/x86_64/kernel/traps.c: i += printk(" <EOI> ");
> drivers/char/mem.c: ret = printk("%s", tmp);
>
And if you don't fix kmsg_write(), this patch will actually break /dev/kmsg
- userspace complains about the write() return value.
Please review these patches, queued since 2.6.15-rc1-mm1:
ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.15-rc3/2.6.15-rc3-mm1/broken-out/printk-return-value-fix-it.patch
ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.15-rc3/2.6.15-rc3-mm1/broken-out/kmsg_write-dont-return-printk-return-value.patch
-
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