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linux-sg2042
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tracing: trace_printk() fix, move format array to data section 

Impact: fix kernel crash when using trace_printk()

trace_printk_fmt section is defined into the readonly section.
But we do:

	trace_printk_fmt = fmt;

to fill in that table of format strings - which is not read-only.
Under CONFIG_DEBUG_RODATA=y this crashes ...

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <1236356510-8381-5-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2009-03-09 10:09:06 +01:00
parent 9de36825b3
commit 8a20d84d09
1 changed files with 1 additions and 1 deletions
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2
include/asm-generic/vmlinux.lds.h
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@ -98,6 +98,7 @@
VMLINUX_SYMBOL(__stop___tracepoints) = .; \ VMLINUX_SYMBOL(__stop___tracepoints) = .; \
LIKELY_PROFILE() \ LIKELY_PROFILE() \
BRANCH_PROFILE() \ BRANCH_PROFILE() \
TRACE_PRINTKS() \
FTRACE_EVENTS() FTRACE_EVENTS()
#define RO_DATA(align) \ #define RO_DATA(align) \
@ -108,7 +109,6 @@
*(__vermagic) /* Kernel version magic */ \ *(__vermagic) /* Kernel version magic */ \
*(__markers_strings) /* Markers: strings */ \ *(__markers_strings) /* Markers: strings */ \
*(__tracepoints_strings)/* Tracepoints: strings */ \ *(__tracepoints_strings)/* Tracepoints: strings */ \
TRACE_PRINTKS() \
} \ } \
\ \
.rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \ .rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \