Christophe Leroy bec059abef powerpc/kgdb: add kgdb_arch_set/remove_breakpoint() ... [ Upstream commit fb978ca207 ] Generic implementation fails to remove breakpoints after init when CONFIG_STRICT_KERNEL_RWX is selected: [ 13.251285] KGDB: BP remove failed: c001c338 [ 13.259587] kgdbts: ERROR PUT: end of test buffer on 'do_fork_test' line 8 expected OK got $E14#aa [ 13.268969] KGDB: re-enter exception: ALL breakpoints killed [ 13.275099] CPU: 0 PID: 1 Comm: init Not tainted 4.18.0-g82bbb913ffd8 #860 [ 13.282836] Call Trace: [ 13.285313] [c60e1ba0] [c0080ef0] kgdb_handle_exception+0x6f4/0x720 (unreliable) [ 13.292618] [c60e1c30] [c000e97c] kgdb_handle_breakpoint+0x3c/0x98 [ 13.298709] [c60e1c40] [c000af54] program_check_exception+0x104/0x700 [ 13.305083] [c60e1c60] [c000e45c] ret_from_except_full+0x0/0x4 [ 13.310845] [c60e1d20] [c02a22ac] run_simple_test+0x2b4/0x2d4 [ 13.316532] [c60e1d30] [c0081698] put_packet+0xb8/0x158 [ 13.321694] [c60e1d60] [c00820b4] gdb_serial_stub+0x230/0xc4c [ 13.327374] [c60e1dc0] [c0080af8] kgdb_handle_exception+0x2fc/0x720 [ 13.333573] [c60e1e50] [c000e928] kgdb_singlestep+0xb4/0xcc [ 13.339068] [c60e1e70] [c000ae1c] single_step_exception+0x90/0xac [ 13.345100] [c60e1e80] [c000e45c] ret_from_except_full+0x0/0x4 [ 13.350865] [c60e1f40] [c000e11c] ret_from_syscall+0x0/0x38 [ 13.356346] Kernel panic - not syncing: Recursive entry to debugger This patch creates powerpc specific version of kgdb_arch_set_breakpoint() and kgdb_arch_remove_breakpoint() using patch_instruction() Fixes: 1e0fc9d1eb ("powerpc/Kconfig: Enable STRICT_KERNEL_RWX for some configs") Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-01-27 14:50:00 +01:00
..
alpha	alpha: Fix Eiger NR_IRQS to 128	2019-02-20 10:25:47 +01:00
arc	ARC: IOC: panic if kernel was started with previously enabled IOC	2019-12-13 08:51:12 +01:00
arm	ARM: qcom_defconfig: Enable MAILBOX	2020-01-27 14:49:55 +01:00
arm64	Revert "arm64: dts: juno: add dma-ranges property"	2020-01-23 08:21:37 +01:00
c6x	kbuild: rename LDFLAGS to KBUILD_LDFLAGS	2018-08-24 08:22:08 +09:00
h8300	h8300: use cc-cross-prefix instead of hardcoding h8300-unknown-linux-	2019-04-05 22:32:55 +02:00
hexagon	hexagon: work around compiler crash	2020-01-17 19:47:17 +01:00
ia64	signal/ia64: Use the force_sig(SIGSEGV,...) in ia64_rt_sigreturn	2020-01-27 14:49:56 +01:00
m68k	m68k: fix command-line parsing when passed from u-boot	2019-12-01 09:16:22 +01:00
microblaze	microblaze: fix multiple bugs in arch/microblaze/boot/Makefile	2019-12-05 09:20:13 +01:00
mips	MIPS: Prevent link failure with kcov instrumentation	2020-01-17 19:47:15 +01:00
nds32	nds32: Fix the items of hwcap_str ordering issue.	2019-12-13 08:51:35 +01:00
nios2	nios2: kconfig: remove duplicate DEBUG_STACK_USAGE symbol defintions	2018-08-27 09:47:20 +08:00
openrisc	openrisc: Fix broken paths to arch/or32	2019-12-05 09:20:40 +01:00
parisc	parisc: Fix compiler warnings in debug_core.c	2020-01-12 12:17:22 +01:00
powerpc	powerpc/kgdb: add kgdb_arch_set/remove_breakpoint()	2020-01-27 14:50:00 +01:00
riscv	riscv: ftrace: correct the condition logic in function graph tracer	2020-01-09 10:19:02 +01:00
s390	s390/purgatory: do not build purgatory with kcov, kasan and friends	2020-01-12 12:17:21 +01:00
sh	pinctrl: sh-pfc: sh7734: Fix duplicate TCLK1_B	2019-12-31 16:35:32 +01:00
sparc	sparc: Correct ctx->saw_frame_pointer logic.	2019-12-13 08:51:52 +01:00
um	um: Make GCOV depend on !KCOV	2019-12-05 09:20:52 +01:00
unicore32	mm: convert return type of handle_mm_fault() caller to vm_fault_t	2018-08-17 16:20:28 -07:00
x86	x86/resctrl: Fix potential memory leak	2020-01-23 08:21:30 +01:00
xtensa	xtensa: fix TLB sanity checker	2019-12-21 10:57:25 +01:00
.gitignore
Kconfig	jump_label: move 'asm goto' support test to Kconfig	2019-06-04 08:02:34 +02:00