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-rw-r--r--kernel/extable.c29
1 files changed, 24 insertions, 5 deletions
diff --git a/kernel/extable.c b/kernel/extable.c
index b54a6017b6b5..7f8f263f8524 100644
--- a/kernel/extable.c
+++ b/kernel/extable.c
@@ -52,6 +52,14 @@ const struct exception_table_entry *search_exception_tables(unsigned long addr)
52 return e; 52 return e;
53} 53}
54 54
55static inline int init_kernel_text(unsigned long addr)
56{
57 if (addr >= (unsigned long)_sinittext &&
58 addr <= (unsigned long)_einittext)
59 return 1;
60 return 0;
61}
62
55int core_kernel_text(unsigned long addr) 63int core_kernel_text(unsigned long addr)
56{ 64{
57 if (addr >= (unsigned long)_stext && 65 if (addr >= (unsigned long)_stext &&
@@ -59,8 +67,7 @@ int core_kernel_text(unsigned long addr)
59 return 1; 67 return 1;
60 68
61 if (system_state == SYSTEM_BOOTING && 69 if (system_state == SYSTEM_BOOTING &&
62 addr >= (unsigned long)_sinittext && 70 init_kernel_text(addr))
63 addr <= (unsigned long)_einittext)
64 return 1; 71 return 1;
65 return 0; 72 return 0;
66} 73}
@@ -69,14 +76,26 @@ int __kernel_text_address(unsigned long addr)
69{ 76{
70 if (core_kernel_text(addr)) 77 if (core_kernel_text(addr))
71 return 1; 78 return 1;
72 return __module_text_address(addr) != NULL; 79 if (is_module_text_address(addr))
80 return 1;
81 /*
82 * There might be init symbols in saved stacktraces.
83 * Give those symbols a chance to be printed in
84 * backtraces (such as lockdep traces).
85 *
86 * Since we are after the module-symbols check, there's
87 * no danger of address overlap:
88 */
89 if (init_kernel_text(addr))
90 return 1;
91 return 0;
73} 92}
74 93
75int kernel_text_address(unsigned long addr) 94int kernel_text_address(unsigned long addr)
76{ 95{
77 if (core_kernel_text(addr)) 96 if (core_kernel_text(addr))
78 return 1; 97 return 1;
79 return module_text_address(addr) != NULL; 98 return is_module_text_address(addr);
80} 99}
81 100
82/* 101/*
@@ -92,5 +111,5 @@ int func_ptr_is_kernel_text(void *ptr)
92 addr = (unsigned long) dereference_function_descriptor(ptr); 111 addr = (unsigned long) dereference_function_descriptor(ptr);
93 if (core_kernel_text(addr)) 112 if (core_kernel_text(addr))
94 return 1; 113 return 1;
95 return module_text_address(addr) != NULL; 114 return is_module_text_address(addr);
96} 115}