[RFC PATCH linux dev-5.4 4/4] ARM: configs: aspeed-g5: Set CONFIG_FORTIFY_SOURCE=n to appease kprobes

[Andrew Jeffery]

Setting CONFIG_FORTIFY_SOURCE=y and CONFIG_KPROBES=y on arm gives a panic when
trying to insert a new probe:

$ echo r:myretprobe do_sys_open '$retval' >> /sys/kernel/debug/tracing/kprobe_events
[   51.688589] detected buffer overflow in memcpy
[   51.689430] ------------[ cut here ]------------
[   51.689627] kernel BUG at lib/string.c:1096!
[   51.689800] Internal error: Oops - BUG: 0 [#1] SMP ARM
[   51.690107] Modules linked in:
[   51.690442] CPU: 0 PID: 107 Comm: sh Not tainted 5.4.39-00272-ga1ee7c973659 #6
[   51.690674] Hardware name: Generic DT based system
[   51.691184] PC is at fortify_panic+0x18/0x20
[   51.691371] LR is at __irq_work_queue_local+0x40/0x7c
[   51.691575] pc : [<8083eaa4>]    lr : [<8020e0ec>]    psr: 60000013
[   51.691812] sp : bd237cb0  ip : bd237bc0  fp : bd237cbc
[   51.692129] r10: 00000007  r9 : 00000000  r8 : 00000060
[   51.692395] r7 : 8011f2f0  r6 : b5092480  r5 : 7f000000  r4 : b4c53b4c
[   51.692723] r3 : 80c04c48  r2 : 00000000  r1 : bd7c5448  r0 : 00000022
[   51.693088] Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
[   51.693449] Control: 10c5387d  Table: b50f406a  DAC: 00000051
[   51.693769] Process sh (pid: 107, stack limit = 0x4e9b7225)
[   51.694126] Stack: (0xbd237cb0 to 0xbd238000)

YOLO it and disable fortified source.

Signed-off-by: Andrew Jeffery <andrew at aj.id.au>
---
 arch/arm/configs/aspeed_g5_defconfig | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/arm/configs/aspeed_g5_defconfig b/arch/arm/configs/aspeed_g5_defconfig
index 254fb7562738..b7f8ccc99000 100644
--- a/arch/arm/configs/aspeed_g5_defconfig
+++ b/arch/arm/configs/aspeed_g5_defconfig
@@ -269,7 +269,6 @@ CONFIG_SQUASHFS_XZ=y
 CONFIG_SQUASHFS_ZSTD=y
 # CONFIG_NETWORK_FILESYSTEMS is not set
 CONFIG_HARDENED_USERCOPY=y
-CONFIG_FORTIFY_SOURCE=y
 CONFIG_CRYPTO_HMAC=y
 CONFIG_CRYPTO_SHA256=y
 CONFIG_CRYPTO_USER_API_HASH=y
-- 
2.25.1