Currently if a pointer is printed using %p[ssB] and the symbol is not found (kallsyms_lookup() fails) then we print the actual address. This leaks kernel addresses. We should instead print something _safe_.
Print "<no-symbol>" instead of kernel address. Signed-off-by: Tobin C. Harding <m...@tobin.cc> --- kernel/kallsyms.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c index 127e7cfafa55..182e7592be9c 100644 --- a/kernel/kallsyms.c +++ b/kernel/kallsyms.c @@ -390,7 +390,7 @@ static int __sprint_symbol(char *buffer, unsigned long address, address += symbol_offset; name = kallsyms_lookup(address, &size, &offset, &modname, buffer); if (!name) - return sprintf(buffer, "0x%lx", address - symbol_offset); + return sprintf(buffer, "<no-symbol>"); if (name != buffer) strcpy(buffer, name); -- 2.7.4