Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* ptrace.c */ |
| 2 | /* By Ross Biro 1/23/92 */ |
| 3 | /* edited by Linus Torvalds */ |
| 4 | /* mangled further by Bob Manson (manson@santafe.edu) */ |
| 5 | /* more mutilation by David Mosberger (davidm@azstarnet.com) */ |
| 6 | |
| 7 | #include <linux/kernel.h> |
| 8 | #include <linux/sched.h> |
Ingo Molnar | 68db0cf | 2017-02-08 18:51:37 +0100 | [diff] [blame] | 9 | #include <linux/sched/task_stack.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | #include <linux/mm.h> |
| 11 | #include <linux/smp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | #include <linux/errno.h> |
| 13 | #include <linux/ptrace.h> |
| 14 | #include <linux/user.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | #include <linux/security.h> |
Jesper Juhl | 7ed20e1 | 2005-05-01 08:59:14 -0700 | [diff] [blame] | 16 | #include <linux/signal.h> |
Al Viro | 12f79be | 2012-05-26 21:44:21 -0400 | [diff] [blame] | 17 | #include <linux/tracehook.h> |
蔡正龙 | a9302e8 | 2013-12-20 10:04:10 +0800 | [diff] [blame] | 18 | #include <linux/audit.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | |
Linus Torvalds | 7c0f6ba | 2016-12-24 11:46:01 -0800 | [diff] [blame] | 20 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include <asm/pgtable.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include <asm/fpu.h> |
| 23 | |
| 24 | #include "proto.h" |
| 25 | |
| 26 | #define DEBUG DBG_MEM |
| 27 | #undef DEBUG |
| 28 | |
| 29 | #ifdef DEBUG |
| 30 | enum { |
| 31 | DBG_MEM = (1<<0), |
| 32 | DBG_BPT = (1<<1), |
| 33 | DBG_MEM_ALL = (1<<2) |
| 34 | }; |
| 35 | #define DBG(fac,args) {if ((fac) & DEBUG) printk args;} |
| 36 | #else |
| 37 | #define DBG(fac,args) |
| 38 | #endif |
| 39 | |
| 40 | #define BREAKINST 0x00000080 /* call_pal bpt */ |
| 41 | |
| 42 | /* |
| 43 | * does not yet catch signals sent when the child dies. |
| 44 | * in exit.c or in signal.c. |
| 45 | */ |
| 46 | |
| 47 | /* |
| 48 | * Processes always block with the following stack-layout: |
| 49 | * |
| 50 | * +================================+ <---- task + 2*PAGE_SIZE |
| 51 | * | PALcode saved frame (ps, pc, | ^ |
| 52 | * | gp, a0, a1, a2) | | |
| 53 | * +================================+ | struct pt_regs |
| 54 | * | | | |
| 55 | * | frame generated by SAVE_ALL | | |
| 56 | * | | v |
| 57 | * +================================+ |
| 58 | * | | ^ |
| 59 | * | frame saved by do_switch_stack | | struct switch_stack |
| 60 | * | | v |
| 61 | * +================================+ |
| 62 | */ |
| 63 | |
| 64 | /* |
| 65 | * The following table maps a register index into the stack offset at |
| 66 | * which the register is saved. Register indices are 0-31 for integer |
| 67 | * regs, 32-63 for fp regs, and 64 for the pc. Notice that sp and |
| 68 | * zero have no stack-slot and need to be treated specially (see |
| 69 | * get_reg/put_reg below). |
| 70 | */ |
| 71 | enum { |
| 72 | REG_R0 = 0, REG_F0 = 32, REG_FPCR = 63, REG_PC = 64 |
| 73 | }; |
| 74 | |
akpm@osdl.org | e52f4ca | 2006-01-12 01:05:37 -0800 | [diff] [blame] | 75 | #define PT_REG(reg) \ |
| 76 | (PAGE_SIZE*2 - sizeof(struct pt_regs) + offsetof(struct pt_regs, reg)) |
| 77 | |
| 78 | #define SW_REG(reg) \ |
| 79 | (PAGE_SIZE*2 - sizeof(struct pt_regs) - sizeof(struct switch_stack) \ |
| 80 | + offsetof(struct switch_stack, reg)) |
| 81 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | static int regoff[] = { |
| 83 | PT_REG( r0), PT_REG( r1), PT_REG( r2), PT_REG( r3), |
| 84 | PT_REG( r4), PT_REG( r5), PT_REG( r6), PT_REG( r7), |
| 85 | PT_REG( r8), SW_REG( r9), SW_REG( r10), SW_REG( r11), |
| 86 | SW_REG( r12), SW_REG( r13), SW_REG( r14), SW_REG( r15), |
| 87 | PT_REG( r16), PT_REG( r17), PT_REG( r18), PT_REG( r19), |
| 88 | PT_REG( r20), PT_REG( r21), PT_REG( r22), PT_REG( r23), |
| 89 | PT_REG( r24), PT_REG( r25), PT_REG( r26), PT_REG( r27), |
| 90 | PT_REG( r28), PT_REG( gp), -1, -1, |
| 91 | SW_REG(fp[ 0]), SW_REG(fp[ 1]), SW_REG(fp[ 2]), SW_REG(fp[ 3]), |
| 92 | SW_REG(fp[ 4]), SW_REG(fp[ 5]), SW_REG(fp[ 6]), SW_REG(fp[ 7]), |
| 93 | SW_REG(fp[ 8]), SW_REG(fp[ 9]), SW_REG(fp[10]), SW_REG(fp[11]), |
| 94 | SW_REG(fp[12]), SW_REG(fp[13]), SW_REG(fp[14]), SW_REG(fp[15]), |
| 95 | SW_REG(fp[16]), SW_REG(fp[17]), SW_REG(fp[18]), SW_REG(fp[19]), |
| 96 | SW_REG(fp[20]), SW_REG(fp[21]), SW_REG(fp[22]), SW_REG(fp[23]), |
| 97 | SW_REG(fp[24]), SW_REG(fp[25]), SW_REG(fp[26]), SW_REG(fp[27]), |
| 98 | SW_REG(fp[28]), SW_REG(fp[29]), SW_REG(fp[30]), SW_REG(fp[31]), |
| 99 | PT_REG( pc) |
| 100 | }; |
| 101 | |
| 102 | static unsigned long zero; |
| 103 | |
| 104 | /* |
| 105 | * Get address of register REGNO in task TASK. |
| 106 | */ |
| 107 | static unsigned long * |
| 108 | get_reg_addr(struct task_struct * task, unsigned long regno) |
| 109 | { |
| 110 | unsigned long *addr; |
| 111 | |
| 112 | if (regno == 30) { |
Al Viro | 37bfbaf | 2006-01-12 01:05:36 -0800 | [diff] [blame] | 113 | addr = &task_thread_info(task)->pcb.usp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | } else if (regno == 65) { |
Al Viro | 37bfbaf | 2006-01-12 01:05:36 -0800 | [diff] [blame] | 115 | addr = &task_thread_info(task)->pcb.unique; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | } else if (regno == 31 || regno > 65) { |
| 117 | zero = 0; |
| 118 | addr = &zero; |
| 119 | } else { |
Al Viro | 27f4513 | 2006-01-12 01:05:36 -0800 | [diff] [blame] | 120 | addr = task_stack_page(task) + regoff[regno]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | } |
| 122 | return addr; |
| 123 | } |
| 124 | |
| 125 | /* |
| 126 | * Get contents of register REGNO in task TASK. |
| 127 | */ |
| 128 | static unsigned long |
| 129 | get_reg(struct task_struct * task, unsigned long regno) |
| 130 | { |
| 131 | /* Special hack for fpcr -- combine hardware and software bits. */ |
| 132 | if (regno == 63) { |
| 133 | unsigned long fpcr = *get_reg_addr(task, regno); |
| 134 | unsigned long swcr |
Al Viro | 37bfbaf | 2006-01-12 01:05:36 -0800 | [diff] [blame] | 135 | = task_thread_info(task)->ieee_state & IEEE_SW_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | swcr = swcr_update_status(swcr, fpcr); |
| 137 | return fpcr | swcr; |
| 138 | } |
| 139 | return *get_reg_addr(task, regno); |
| 140 | } |
| 141 | |
| 142 | /* |
| 143 | * Write contents of register REGNO in task TASK. |
| 144 | */ |
| 145 | static int |
| 146 | put_reg(struct task_struct *task, unsigned long regno, unsigned long data) |
| 147 | { |
| 148 | if (regno == 63) { |
Al Viro | 37bfbaf | 2006-01-12 01:05:36 -0800 | [diff] [blame] | 149 | task_thread_info(task)->ieee_state |
| 150 | = ((task_thread_info(task)->ieee_state & ~IEEE_SW_MASK) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | | (data & IEEE_SW_MASK)); |
| 152 | data = (data & FPCR_DYN_MASK) | ieee_swcr_to_fpcr(data); |
| 153 | } |
| 154 | *get_reg_addr(task, regno) = data; |
| 155 | return 0; |
| 156 | } |
| 157 | |
| 158 | static inline int |
| 159 | read_int(struct task_struct *task, unsigned long addr, int * data) |
| 160 | { |
Lorenzo Stoakes | f307ab6 | 2016-10-13 01:20:20 +0100 | [diff] [blame] | 161 | int copied = access_process_vm(task, addr, data, sizeof(int), |
| 162 | FOLL_FORCE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | return (copied == sizeof(int)) ? 0 : -EIO; |
| 164 | } |
| 165 | |
| 166 | static inline int |
| 167 | write_int(struct task_struct *task, unsigned long addr, int data) |
| 168 | { |
Lorenzo Stoakes | f307ab6 | 2016-10-13 01:20:20 +0100 | [diff] [blame] | 169 | int copied = access_process_vm(task, addr, &data, sizeof(int), |
| 170 | FOLL_FORCE | FOLL_WRITE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | return (copied == sizeof(int)) ? 0 : -EIO; |
| 172 | } |
| 173 | |
| 174 | /* |
| 175 | * Set breakpoint. |
| 176 | */ |
| 177 | int |
| 178 | ptrace_set_bpt(struct task_struct * child) |
| 179 | { |
| 180 | int displ, i, res, reg_b, nsaved = 0; |
| 181 | unsigned int insn, op_code; |
| 182 | unsigned long pc; |
| 183 | |
| 184 | pc = get_reg(child, REG_PC); |
| 185 | res = read_int(child, pc, (int *) &insn); |
| 186 | if (res < 0) |
| 187 | return res; |
| 188 | |
| 189 | op_code = insn >> 26; |
| 190 | if (op_code >= 0x30) { |
| 191 | /* |
| 192 | * It's a branch: instead of trying to figure out |
| 193 | * whether the branch will be taken or not, we'll put |
| 194 | * a breakpoint at either location. This is simpler, |
| 195 | * more reliable, and probably not a whole lot slower |
| 196 | * than the alternative approach of emulating the |
| 197 | * branch (emulation can be tricky for fp branches). |
| 198 | */ |
| 199 | displ = ((s32)(insn << 11)) >> 9; |
Al Viro | 37bfbaf | 2006-01-12 01:05:36 -0800 | [diff] [blame] | 200 | task_thread_info(child)->bpt_addr[nsaved++] = pc + 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | if (displ) /* guard against unoptimized code */ |
Al Viro | 37bfbaf | 2006-01-12 01:05:36 -0800 | [diff] [blame] | 202 | task_thread_info(child)->bpt_addr[nsaved++] |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | = pc + 4 + displ; |
| 204 | DBG(DBG_BPT, ("execing branch\n")); |
| 205 | } else if (op_code == 0x1a) { |
| 206 | reg_b = (insn >> 16) & 0x1f; |
Al Viro | 37bfbaf | 2006-01-12 01:05:36 -0800 | [diff] [blame] | 207 | task_thread_info(child)->bpt_addr[nsaved++] = get_reg(child, reg_b); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | DBG(DBG_BPT, ("execing jump\n")); |
| 209 | } else { |
Al Viro | 37bfbaf | 2006-01-12 01:05:36 -0800 | [diff] [blame] | 210 | task_thread_info(child)->bpt_addr[nsaved++] = pc + 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | DBG(DBG_BPT, ("execing normal insn\n")); |
| 212 | } |
| 213 | |
| 214 | /* install breakpoints: */ |
| 215 | for (i = 0; i < nsaved; ++i) { |
Al Viro | 37bfbaf | 2006-01-12 01:05:36 -0800 | [diff] [blame] | 216 | res = read_int(child, task_thread_info(child)->bpt_addr[i], |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | (int *) &insn); |
| 218 | if (res < 0) |
| 219 | return res; |
Al Viro | 37bfbaf | 2006-01-12 01:05:36 -0800 | [diff] [blame] | 220 | task_thread_info(child)->bpt_insn[i] = insn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | DBG(DBG_BPT, (" -> next_pc=%lx\n", |
Al Viro | 37bfbaf | 2006-01-12 01:05:36 -0800 | [diff] [blame] | 222 | task_thread_info(child)->bpt_addr[i])); |
| 223 | res = write_int(child, task_thread_info(child)->bpt_addr[i], |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | BREAKINST); |
| 225 | if (res < 0) |
| 226 | return res; |
| 227 | } |
Al Viro | 37bfbaf | 2006-01-12 01:05:36 -0800 | [diff] [blame] | 228 | task_thread_info(child)->bpt_nsaved = nsaved; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | return 0; |
| 230 | } |
| 231 | |
| 232 | /* |
| 233 | * Ensure no single-step breakpoint is pending. Returns non-zero |
| 234 | * value if child was being single-stepped. |
| 235 | */ |
| 236 | int |
| 237 | ptrace_cancel_bpt(struct task_struct * child) |
| 238 | { |
Al Viro | 37bfbaf | 2006-01-12 01:05:36 -0800 | [diff] [blame] | 239 | int i, nsaved = task_thread_info(child)->bpt_nsaved; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | |
Al Viro | 37bfbaf | 2006-01-12 01:05:36 -0800 | [diff] [blame] | 241 | task_thread_info(child)->bpt_nsaved = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | |
| 243 | if (nsaved > 2) { |
| 244 | printk("ptrace_cancel_bpt: bogus nsaved: %d!\n", nsaved); |
| 245 | nsaved = 2; |
| 246 | } |
| 247 | |
| 248 | for (i = 0; i < nsaved; ++i) { |
Al Viro | 37bfbaf | 2006-01-12 01:05:36 -0800 | [diff] [blame] | 249 | write_int(child, task_thread_info(child)->bpt_addr[i], |
| 250 | task_thread_info(child)->bpt_insn[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | } |
| 252 | return (nsaved != 0); |
| 253 | } |
| 254 | |
Christoph Hellwig | fd341ab | 2010-03-10 15:22:47 -0800 | [diff] [blame] | 255 | void user_enable_single_step(struct task_struct *child) |
| 256 | { |
| 257 | /* Mark single stepping. */ |
| 258 | task_thread_info(child)->bpt_nsaved = -1; |
| 259 | } |
| 260 | |
| 261 | void user_disable_single_step(struct task_struct *child) |
| 262 | { |
| 263 | ptrace_cancel_bpt(child); |
| 264 | } |
| 265 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | /* |
| 267 | * Called by kernel/ptrace.c when detaching.. |
| 268 | * |
| 269 | * Make sure the single step bit is not set. |
| 270 | */ |
| 271 | void ptrace_disable(struct task_struct *child) |
| 272 | { |
Christoph Hellwig | fd341ab | 2010-03-10 15:22:47 -0800 | [diff] [blame] | 273 | user_disable_single_step(child); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | } |
| 275 | |
Namhyung Kim | 9b05a69 | 2010-10-27 15:33:47 -0700 | [diff] [blame] | 276 | long arch_ptrace(struct task_struct *child, long request, |
| 277 | unsigned long addr, unsigned long data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | unsigned long tmp; |
| 280 | size_t copied; |
| 281 | long ret; |
| 282 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | switch (request) { |
| 284 | /* When I and D space are separate, these will need to be fixed. */ |
| 285 | case PTRACE_PEEKTEXT: /* read word at location addr. */ |
| 286 | case PTRACE_PEEKDATA: |
Eric W. Biederman | 84d77d3 | 2016-11-22 12:06:50 -0600 | [diff] [blame] | 287 | copied = ptrace_access_vm(child, addr, &tmp, sizeof(tmp), |
Lorenzo Stoakes | f307ab6 | 2016-10-13 01:20:20 +0100 | [diff] [blame] | 288 | FOLL_FORCE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | ret = -EIO; |
| 290 | if (copied != sizeof(tmp)) |
| 291 | break; |
| 292 | |
Christoph Hellwig | a5f833f | 2007-10-16 01:26:34 -0700 | [diff] [blame] | 293 | force_successful_syscall_return(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | ret = tmp; |
| 295 | break; |
| 296 | |
| 297 | /* Read register number ADDR. */ |
| 298 | case PTRACE_PEEKUSR: |
Christoph Hellwig | a5f833f | 2007-10-16 01:26:34 -0700 | [diff] [blame] | 299 | force_successful_syscall_return(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | ret = get_reg(child, addr); |
Namhyung Kim | 9b05a69 | 2010-10-27 15:33:47 -0700 | [diff] [blame] | 301 | DBG(DBG_MEM, ("peek $%lu->%#lx\n", addr, ret)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | break; |
| 303 | |
| 304 | /* When I and D space are separate, this will have to be fixed. */ |
| 305 | case PTRACE_POKETEXT: /* write the word at location addr. */ |
| 306 | case PTRACE_POKEDATA: |
Alexey Dobriyan | f284ce7 | 2007-07-17 04:03:44 -0700 | [diff] [blame] | 307 | ret = generic_ptrace_pokedata(child, addr, data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | break; |
| 309 | |
| 310 | case PTRACE_POKEUSR: /* write the specified register */ |
Namhyung Kim | 9b05a69 | 2010-10-27 15:33:47 -0700 | [diff] [blame] | 311 | DBG(DBG_MEM, ("poke $%lu<-%#lx\n", addr, data)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | ret = put_reg(child, addr, data); |
| 313 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | default: |
| 315 | ret = ptrace_request(child, request, addr, data); |
Christoph Hellwig | a5f833f | 2007-10-16 01:26:34 -0700 | [diff] [blame] | 316 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | return ret; |
| 319 | } |
| 320 | |
Al Viro | 12f79be | 2012-05-26 21:44:21 -0400 | [diff] [blame] | 321 | asmlinkage unsigned long syscall_trace_enter(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | { |
Al Viro | 12f79be | 2012-05-26 21:44:21 -0400 | [diff] [blame] | 323 | unsigned long ret = 0; |
蔡正龙 | a9302e8 | 2013-12-20 10:04:10 +0800 | [diff] [blame] | 324 | struct pt_regs *regs = current_pt_regs(); |
Al Viro | 12f79be | 2012-05-26 21:44:21 -0400 | [diff] [blame] | 325 | if (test_thread_flag(TIF_SYSCALL_TRACE) && |
| 326 | tracehook_report_syscall_entry(current_pt_regs())) |
| 327 | ret = -1UL; |
Eric Paris | 9139740 | 2014-03-11 13:29:28 -0400 | [diff] [blame] | 328 | audit_syscall_entry(regs->r0, regs->r16, regs->r17, regs->r18, regs->r19); |
Al Viro | 12f79be | 2012-05-26 21:44:21 -0400 | [diff] [blame] | 329 | return ret ?: current_pt_regs()->r0; |
| 330 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | |
Al Viro | 12f79be | 2012-05-26 21:44:21 -0400 | [diff] [blame] | 332 | asmlinkage void |
| 333 | syscall_trace_leave(void) |
| 334 | { |
蔡正龙 | a9302e8 | 2013-12-20 10:04:10 +0800 | [diff] [blame] | 335 | audit_syscall_exit(current_pt_regs()); |
Al Viro | 12f79be | 2012-05-26 21:44:21 -0400 | [diff] [blame] | 336 | if (test_thread_flag(TIF_SYSCALL_TRACE)) |
| 337 | tracehook_report_syscall_exit(current_pt_regs(), 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | } |