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Diffstat (limited to 'arch/powerpc/kernel/kgdb.c')
-rw-r--r--arch/powerpc/kernel/kgdb.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/kgdb.c b/arch/powerpc/kernel/kgdb.c
index c470a40b29f5..a7bc7521c064 100644
--- a/arch/powerpc/kernel/kgdb.c
+++ b/arch/powerpc/kernel/kgdb.c
@@ -154,12 +154,12 @@ static int kgdb_handle_breakpoint(struct pt_regs *regs)
154static int kgdb_singlestep(struct pt_regs *regs) 154static int kgdb_singlestep(struct pt_regs *regs)
155{ 155{
156 struct thread_info *thread_info, *exception_thread_info; 156 struct thread_info *thread_info, *exception_thread_info;
157 struct thread_info *backup_current_thread_info = \ 157 struct thread_info *backup_current_thread_info;
158 (struct thread_info *)kmalloc(sizeof(struct thread_info), GFP_KERNEL);
159 158
160 if (user_mode(regs)) 159 if (user_mode(regs))
161 return 0; 160 return 0;
162 161
162 backup_current_thread_info = (struct thread_info *)kmalloc(sizeof(struct thread_info), GFP_KERNEL);
163 /* 163 /*
164 * On Book E and perhaps other processors, singlestep is handled on 164 * On Book E and perhaps other processors, singlestep is handled on
165 * the critical exception stack. This causes current_thread_info() 165 * the critical exception stack. This causes current_thread_info()
@@ -185,6 +185,7 @@ static int kgdb_singlestep(struct pt_regs *regs)
185 /* Restore current_thread_info lastly. */ 185 /* Restore current_thread_info lastly. */
186 memcpy(exception_thread_info, backup_current_thread_info, sizeof *thread_info); 186 memcpy(exception_thread_info, backup_current_thread_info, sizeof *thread_info);
187 187
188 kfree(backup_current_thread_info);
188 return 1; 189 return 1;
189} 190}
190 191