From: Namhyung Kim <namhyung@kernel.org>
Date: Fri, 8 Aug 2014 21:19:41 +0000 (-0700)
Subject: kernel/kallsyms.c: fix %pB when there's no symbol at the address
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~116^2~181
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b86280aa48b67c8119ed8f6c6bebd8c0af13a269;p=pandora-kernel.git

kernel/kallsyms.c: fix %pB when there's no symbol at the address

__sprint_symbol() should restore original address when kallsyms_lookup()
failed to find a symbol.  It's reported when dumpstack shows an address in
a dynamically allocated trampoline for ftrace.

  [ 1314.612287]  [<ffffffff81700312>] dump_stack+0x45/0x56
  [ 1314.612290]  [<ffffffff8125f5b0>] ? meminfo_proc_open+0x30/0x30
  [ 1314.612293]  [<ffffffffa080a494>] kpatch_ftrace_handler+0x14/0xf0 [kpatch]
  [ 1314.612306]  [<ffffffffa00160c4>] 0xffffffffa00160c3

You can see a difference in the hex address - c4 and c3.  Fix it.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Reported-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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