From: Joe Mario <jmario@redhat.com>
Date: Wed, 23 Oct 2013 13:06:53 +0000 (+0200)
Subject: kbuild: Increase kallsyms max symbol length
X-Git-Tag: firefly_0821_release~176^2~4961^2~8
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=eea0e9cbb9e65cd553d302a4aefd4c7b70d9fd90;p=firefly-linux-kernel-4.4.55.git

kbuild: Increase kallsyms max symbol length

[AK: This seems like a ticking time bomb even without LTO,
so should be merged now. It causes very weird problems.
Thanks to Joe for tracking them down.]

With the added postfixes that LTO adds for local
symbols, the longest name in the kernel overflows
the namebuf[KSYM_NAME_LEN] array by two bytes.  That name is:
__pci_fixup_resumePCI_VENDOR_ID_SERVERWORKSPCI_DEVICE_ID_SERVERWORKS_HT1000SBquirk_disable_broadcom_boot_interrupt.1488004.672802

Double the max symbol name length.

v2: Use 255  (Joe Perches)
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
---

diff --git a/include/linux/kallsyms.h b/include/linux/kallsyms.h
index 6883e197acb9..56488708da4b 100644
--- a/include/linux/kallsyms.h
+++ b/include/linux/kallsyms.h
@@ -9,7 +9,7 @@
 #include <linux/kernel.h>
 #include <linux/stddef.h>
 
-#define KSYM_NAME_LEN 128
+#define KSYM_NAME_LEN 255
 #define KSYM_SYMBOL_LEN (sizeof("%s+%#lx/%#lx [%s]") + (KSYM_NAME_LEN - 1) + \
 			 2*(BITS_PER_LONG*3/10) + (MODULE_NAME_LEN - 1) + 1)