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| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2014-01-23 17:27:59 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-13 21:50:09 (GMT) |
| commit | 8c0b860ecba3c32e8c784bb6840363301f6a1fe3 (patch) | |
| tree | 2225bdd5efcfc5950e0ec8be03f4b0b88fbb5393 /arch/sh/kernel/kgdb.c | |
| parent | f01b215f5a9e3eb922a64be93220f68b43c5b205 (diff) | |
| download | linux-fsl-qoriq-8c0b860ecba3c32e8c784bb6840363301f6a1fe3.tar.xz | |
tracing: Check if tracing is enabled in trace_puts()
commit 3132e107d608f8753240d82d61303c500fd515b4 upstream.
If trace_puts() is used very early in boot up, it can crash the machine
if it is called before the ring buffer is allocated. If a trace_printk()
is used with no arguments, then it will be converted into a trace_puts()
and suffer the same fate.
Fixes: 09ae72348ecc "tracing: Add trace_puts() for even faster trace_printk() tracing"
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/sh/kernel/kgdb.c')
0 files changed, 0 insertions, 0 deletions