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-rw-r--r--fs/binfmt_aout.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c
index 15d80bb35d6..9b6aef0f75e 100644
--- a/fs/binfmt_aout.c
+++ b/fs/binfmt_aout.c
@@ -75,14 +75,16 @@ static int aout_core_dump(struct coredump_params *cprm)
75 struct file *file = cprm->file; 75 struct file *file = cprm->file;
76 mm_segment_t fs; 76 mm_segment_t fs;
77 int has_dumped = 0; 77 int has_dumped = 0;
78 unsigned long dump_start, dump_size; 78 void __user *dump_start;
79 int dump_size;
79 struct user dump; 80 struct user dump;
80#ifdef __alpha__ 81#ifdef __alpha__
81# define START_DATA(u) (u.start_data) 82# define START_DATA(u) ((void __user *)u.start_data)
82#else 83#else
83# define START_DATA(u) ((u.u_tsize << PAGE_SHIFT) + u.start_code) 84# define START_DATA(u) ((void __user *)((u.u_tsize << PAGE_SHIFT) + \
85 u.start_code))
84#endif 86#endif
85# define START_STACK(u) (u.start_stack) 87# define START_STACK(u) ((void __user *)u.start_stack)
86 88
87 fs = get_fs(); 89 fs = get_fs();
88 set_fs(KERNEL_DS); 90 set_fs(KERNEL_DS);
@@ -104,9 +106,9 @@ static int aout_core_dump(struct coredump_params *cprm)
104 106
105/* make sure we actually have a data and stack area to dump */ 107/* make sure we actually have a data and stack area to dump */
106 set_fs(USER_DS); 108 set_fs(USER_DS);
107 if (!access_ok(VERIFY_READ, (void __user *)START_DATA(dump), dump.u_dsize << PAGE_SHIFT)) 109 if (!access_ok(VERIFY_READ, START_DATA(dump), dump.u_dsize << PAGE_SHIFT))
108 dump.u_dsize = 0; 110 dump.u_dsize = 0;
109 if (!access_ok(VERIFY_READ, (void __user *)START_STACK(dump), dump.u_ssize << PAGE_SHIFT)) 111 if (!access_ok(VERIFY_READ, START_STACK(dump), dump.u_ssize << PAGE_SHIFT))
110 dump.u_ssize = 0; 112 dump.u_ssize = 0;
111 113
112 set_fs(KERNEL_DS); 114 set_fs(KERNEL_DS);