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-rw-r--r--arch/arm/probes/kprobes/test-arm.c17
-rw-r--r--arch/arm/probes/kprobes/test-core.c9
-rw-r--r--arch/arm/probes/kprobes/test-thumb.c12
3 files changed, 36 insertions, 2 deletions
diff --git a/arch/arm/probes/kprobes/test-arm.c b/arch/arm/probes/kprobes/test-arm.c
index fdeb300b0fc8..9b3b1b4a0939 100644
--- a/arch/arm/probes/kprobes/test-arm.c
+++ b/arch/arm/probes/kprobes/test-arm.c
@@ -12,6 +12,7 @@
#include <linux/module.h>
#include <asm/system_info.h>
#include <asm/opcodes.h>
+#include <asm/probes.h>
#include "test-core.h"
@@ -478,6 +479,7 @@ void kprobe_arm_test_cases(void)
TEST_RPR( "strh r",0, VAL1,", [r",1, 48,", -r",2, 24,"]")
TEST_RPR( "streqh r",14,VAL2,", [r",11,0, ", r",12, 48,"]")
TEST_UNSUPPORTED( "streqh r14, [r13, r12]")
+ TEST_UNSUPPORTED( "streqh r14, [r12, r13]")
TEST_RPR( "strh r",1, VAL1,", [r",2, 24,", r",3, 48,"]!")
TEST_RPR( "strneh r",12,VAL2,", [r",11,48,", -r",10,24,"]!")
TEST_RPR( "strh r",2, VAL1,", [r",3, 24,"], r",4, 48,"")
@@ -502,6 +504,9 @@ void kprobe_arm_test_cases(void)
TEST_RP( "strplh r",12,VAL2,", [r",11,24,", #-4]!")
TEST_RP( "strh r",2, VAL1,", [r",3, 24,"], #48")
TEST_RP( "strh r",10,VAL2,", [r",9, 64,"], #-48")
+ TEST_RP( "strh r",3, VAL1,", [r",13,TEST_MEMORY_SIZE,", #-"__stringify(MAX_STACK_SIZE)"]!")
+ TEST_UNSUPPORTED("strh r3, [r13, #-"__stringify(MAX_STACK_SIZE)"-8]!")
+ TEST_RP( "strh r",4, VAL1,", [r",14,TEST_MEMORY_SIZE,", #-"__stringify(MAX_STACK_SIZE)"-8]!")
TEST_UNSUPPORTED(__inst_arm(0xe1efc3b0) " @ strh r12, [pc, #48]!")
TEST_UNSUPPORTED(__inst_arm(0xe0c9f3b0) " @ strh pc, [r9], #48")
@@ -568,6 +573,7 @@ void kprobe_arm_test_cases(void)
TEST_RPR( "strd r",0, VAL1,", [r",1, 48,", -r",2,24,"]")
TEST_RPR( "strccd r",8, VAL2,", [r",11,0, ", r",12,48,"]")
TEST_UNSUPPORTED( "strccd r8, [r13, r12]")
+ TEST_UNSUPPORTED( "strccd r8, [r12, r13]")
TEST_RPR( "strd r",4, VAL1,", [r",2, 24,", r",3, 48,"]!")
TEST_RPR( "strcsd r",12,VAL2,", [r",11,48,", -r",10,24,"]!")
TEST_RPR( "strd r",2, VAL1,", [r",5, 24,"], r",4,48,"")
@@ -591,6 +597,9 @@ void kprobe_arm_test_cases(void)
TEST_RP( "strvcd r",12,VAL2,", [r",11,24,", #-16]!")
TEST_RP( "strd r",2, VAL1,", [r",4, 24,"], #48")
TEST_RP( "strd r",10,VAL2,", [r",9, 64,"], #-48")
+ TEST_RP( "strd r",6, VAL1,", [r",13,TEST_MEMORY_SIZE,", #-"__stringify(MAX_STACK_SIZE)"]!")
+ TEST_UNSUPPORTED("strd r6, [r13, #-"__stringify(MAX_STACK_SIZE)"-8]!")
+ TEST_RP( "strd r",4, VAL1,", [r",12,TEST_MEMORY_SIZE,", #-"__stringify(MAX_STACK_SIZE)"-8]!")
TEST_UNSUPPORTED(__inst_arm(0xe1efc3f0) " @ strd r12, [pc, #48]!")
TEST_P( "ldrd r0, [r",0, 24,", #-8]")
@@ -639,16 +648,20 @@ void kprobe_arm_test_cases(void)
TEST_RP( "str"byte" r",12,VAL2,", [r",11,24,", #-4]!") \
TEST_RP( "str"byte" r",2, VAL1,", [r",3, 24,"], #48") \
TEST_RP( "str"byte" r",10,VAL2,", [r",9, 64,"], #-48") \
+ TEST_RP( "str"byte" r",3, VAL1,", [r",13,TEST_MEMORY_SIZE,", #-"__stringify(MAX_STACK_SIZE)"]!") \
+ TEST_UNSUPPORTED("str"byte" r3, [r13, #-"__stringify(MAX_STACK_SIZE)"-8]!") \
+ TEST_RP( "str"byte" r",4, VAL1,", [r",10,TEST_MEMORY_SIZE,", #-"__stringify(MAX_STACK_SIZE)"-8]!") \
TEST_RPR("str"byte" r",0, VAL1,", [r",1, 48,", -r",2, 24,"]") \
TEST_RPR("str"byte" r",14,VAL2,", [r",11,0, ", r",12, 48,"]") \
- TEST_UNSUPPORTED("str"byte" r14, [r13, r12]") \
+ TEST_UNSUPPORTED("str"byte" r14, [r13, r12]") \
+ TEST_UNSUPPORTED("str"byte" r14, [r12, r13]") \
TEST_RPR("str"byte" r",1, VAL1,", [r",2, 24,", r",3, 48,"]!") \
TEST_RPR("str"byte" r",12,VAL2,", [r",11,48,", -r",10,24,"]!") \
TEST_RPR("str"byte" r",2, VAL1,", [r",3, 24,"], r",4, 48,"") \
TEST_RPR("str"byte" r",10,VAL2,", [r",9, 48,"], -r",11,24,"") \
TEST_RPR("str"byte" r",0, VAL1,", [r",1, 24,", r",2, 32,", asl #1]")\
TEST_RPR("str"byte" r",14,VAL2,", [r",11,0, ", r",12, 32,", lsr #2]")\
- TEST_UNSUPPORTED("str"byte" r14, [r13, r12, lsr #2]")\
+ TEST_UNSUPPORTED("str"byte" r14, [r13, r12, lsr #2]") \
TEST_RPR("str"byte" r",1, VAL1,", [r",2, 24,", r",3, 32,", asr #3]!")\
TEST_RPR("str"byte" r",12,VAL2,", [r",11,24,", r",10, 4,", ror #31]!")\
TEST_P( "ldr"byte" r0, [r",0, 24,", #-2]") \
diff --git a/arch/arm/probes/kprobes/test-core.c b/arch/arm/probes/kprobes/test-core.c
index 7ab633d51954..7c5ddd5a6afd 100644
--- a/arch/arm/probes/kprobes/test-core.c
+++ b/arch/arm/probes/kprobes/test-core.c
@@ -1196,6 +1196,13 @@ static void setup_test_context(struct pt_regs *regs)
regs->uregs[arg->reg] =
(unsigned long)current_stack + arg->val;
memory_needs_checking = true;
+ /*
+ * Test memory at an address below SP is in danger of
+ * being altered by an interrupt occurring and pushing
+ * data onto the stack. Disable interrupts to stop this.
+ */
+ if (arg->reg == 13)
+ regs->ARM_cpsr |= PSR_I_BIT;
break;
}
case ARG_TYPE_MEM: {
@@ -1272,6 +1279,8 @@ test_after_pre_handler(struct kprobe *p, struct pt_regs *regs)
/* Undo any changes done to SP by the test case */
regs->ARM_sp = (unsigned long)current_stack;
+ /* Enable interrupts in case setup_test_context disabled them */
+ regs->ARM_cpsr &= ~PSR_I_BIT;
container_of(p, struct test_probe, kprobe)->hit = test_instance;
return 0;
diff --git a/arch/arm/probes/kprobes/test-thumb.c b/arch/arm/probes/kprobes/test-thumb.c
index 6c6e9a9bb675..e8cf193db1ea 100644
--- a/arch/arm/probes/kprobes/test-thumb.c
+++ b/arch/arm/probes/kprobes/test-thumb.c
@@ -11,6 +11,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <asm/opcodes.h>
+#include <asm/probes.h>
#include "test-core.h"
@@ -416,6 +417,9 @@ void kprobe_thumb32_test_cases(void)
TEST_RR( "strd r",14,VAL2,", r",12,VAL1,", [sp, #16]!")
TEST_RRP("strd r",1, VAL1,", r",0, VAL2,", [r",7, 24,"], #16")
TEST_RR( "strd r",7, VAL2,", r",8, VAL1,", [sp], #-16")
+ TEST_RRP("strd r",6, VAL1,", r",7, VAL2,", [r",13, TEST_MEMORY_SIZE,", #-"__stringify(MAX_STACK_SIZE)"]!")
+ TEST_UNSUPPORTED("strd r6, r7, [r13, #-"__stringify(MAX_STACK_SIZE)"-8]!")
+ TEST_RRP("strd r",4, VAL1,", r",5, VAL2,", [r",14, TEST_MEMORY_SIZE,", #-"__stringify(MAX_STACK_SIZE)"-8]!")
TEST_UNSUPPORTED(__inst_thumb32(0xe9efec04) " @ strd r14, r12, [pc, #16]!")
TEST_UNSUPPORTED(__inst_thumb32(0xe8efec04) " @ strd r14, r12, [pc], #16")
@@ -821,14 +825,22 @@ CONDITION_INSTRUCTIONS(22,
TEST_RP( "str"size" r",14,VAL2,", [r",1, 256, ", #-128]!") \
TEST_RPR("str"size".w r",0, VAL1,", [r",1, 0,", r",2, 4,"]") \
TEST_RPR("str"size" r",14,VAL2,", [r",10,0,", r",11,4,", lsl #1]") \
+ TEST_UNSUPPORTED("str"size" r0, [r13, r1]") \
TEST_R( "str"size".w r",7, VAL1,", [sp, #24]") \
TEST_RP( "str"size".w r",0, VAL2,", [r",0,0, "]") \
+ TEST_RP( "str"size" r",6, VAL1,", [r",13, TEST_MEMORY_SIZE,", #-"__stringify(MAX_STACK_SIZE)"]!") \
+ TEST_UNSUPPORTED("str"size" r6, [r13, #-"__stringify(MAX_STACK_SIZE)"-8]!") \
+ TEST_RP( "str"size" r",4, VAL2,", [r",12, TEST_MEMORY_SIZE,", #-"__stringify(MAX_STACK_SIZE)"-8]!") \
TEST_UNSUPPORTED("str"size"t r0, [r1, #4]")
SINGLE_STORE("b")
SINGLE_STORE("h")
SINGLE_STORE("")
+ TEST_UNSUPPORTED(__inst_thumb32(0xf801000d) " @ strb r0, [r1, r13]")
+ TEST_UNSUPPORTED(__inst_thumb32(0xf821000d) " @ strh r0, [r1, r13]")
+ TEST_UNSUPPORTED(__inst_thumb32(0xf841000d) " @ str r0, [r1, r13]")
+
TEST("str sp, [sp]")
TEST_UNSUPPORTED(__inst_thumb32(0xf8cfe000) " @ str r14, [pc]")
TEST_UNSUPPORTED(__inst_thumb32(0xf8cef000) " @ str pc, [r14]")
generated by cgit (git 2.34.1) at 2024-05-08 12:58:15 +0000