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linux-sg2042
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[PATCH] convert that currently tests _NSIG directly to use valid_signal() 

Convert most of the current code that uses _NSIG directly to instead use
valid_signal().  This avoids gcc -W warnings and off-by-one errors.

Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jesper Juhl 2005-05-01 08:59:14 -07:00 committed by Linus Torvalds
parent e5bdd883a1
commit 7ed20e1ad5
33 changed files with 90 additions and 59 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
arch/alpha/kernel/ptrace.c
View File

@ -14,6 +14,7 @@
#include <linux/user.h>
#include <linux/slab.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
@ -335,7 +336,7 @@ do_sys_ptrace(long request, long pid, long addr, long data,
/* continue and stop at next (return from) syscall */
case PTRACE_CONT: /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
@ -365,7 +366,7 @@ do_sys_ptrace(long request, long pid, long addr, long data,
case PTRACE_SINGLESTEP: /* execute single instruction. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
/* Mark single stepping. */
child->thread_info->bpt_nsaved = -1;

5
arch/arm/kernel/ptrace.c
View File

@ -19,6 +19,7 @@
#include <linux/user.h>
#include <linux/security.h>
#include <linux/init.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
@ -693,7 +694,7 @@ static int do_ptrace(int request, struct task_struct *child, long addr, long dat
case PTRACE_SYSCALL:
case PTRACE_CONT:
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
@ -728,7 +729,7 @@ static int do_ptrace(int request, struct task_struct *child, long addr, long dat
*/
case PTRACE_SINGLESTEP:
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
child->ptrace |= PT_SINGLESTEP;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);

5
arch/arm26/kernel/ptrace.c
View File

@ -18,6 +18,7 @@
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
@ -591,7 +592,7 @@ static int do_ptrace(int request, struct task_struct *child, long addr, long dat
case PTRACE_SYSCALL:
case PTRACE_CONT:
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
@ -626,7 +627,7 @@ static int do_ptrace(int request, struct task_struct *child, long addr, long dat
*/
case PTRACE_SINGLESTEP:
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
child->ptrace |= PT_SINGLESTEP;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);

5
arch/cris/arch-v10/kernel/ptrace.c
View File

@ -10,6 +10,7 @@
#include <linux/errno.h>
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/page.h>
@ -184,7 +185,7 @@ sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_CONT:
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL) {
@ -219,7 +220,7 @@ sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SINGLESTEP:
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);

5
arch/frv/kernel/ptrace.c
View File

@ -20,6 +20,7 @@
#include <linux/user.h>
#include <linux/config.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/page.h>
@ -239,7 +240,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
@ -267,7 +268,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SINGLESTEP: /* set the trap flag. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
ptrace_enable(child);

5
arch/h8300/kernel/ptrace.c
View File

@ -24,6 +24,7 @@
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/config.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/page.h>
@ -171,7 +172,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
if ((unsigned long) data >= _NSIG)
if (!valid_signal(data))
break ;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
@ -202,7 +203,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SINGLESTEP: { /* set the trap flag. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
child->exit_code = data;

5
arch/i386/kernel/ptrace.c
View File

@ -16,6 +16,7 @@
#include <linux/security.h>
#include <linux/audit.h>
#include <linux/seccomp.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
@ -511,7 +512,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL) {
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
@ -543,7 +544,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SINGLESTEP: /* set the trap flag. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
set_singlestep(child);

5
arch/ia64/kernel/ptrace.c
View File

@ -17,6 +17,7 @@
#include <linux/user.h>
#include <linux/security.h>
#include <linux/audit.h>
#include <linux/signal.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
@ -1481,7 +1482,7 @@ sys_ptrace (long request, pid_t pid, unsigned long addr, unsigned long data)
case PTRACE_CONT:
/* restart after signal. */
ret = -EIO;
if (data > _NSIG)
if (!valid_signal(data))
goto out_tsk;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
@ -1520,7 +1521,7 @@ sys_ptrace (long request, pid_t pid, unsigned long addr, unsigned long data)
/* let child execute for one instruction */
case PTRACE_SINGLEBLOCK:
ret = -EIO;
if (data > _NSIG)
if (!valid_signal(data))
goto out_tsk;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);

5
arch/m32r/kernel/ptrace.c
View File

@ -24,6 +24,7 @@
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/string.h>
#include <linux/signal.h>
#include <asm/cacheflush.h>
#include <asm/io.h>
@ -665,7 +666,7 @@ do_ptrace(long request, struct task_struct *child, long addr, long data)
case PTRACE_SYSCALL:
case PTRACE_CONT:
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
@ -700,7 +701,7 @@ do_ptrace(long request, struct task_struct *child, long addr, long data)
unsigned long pc, insn;
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
if ((child->ptrace & PT_DTRACE) == 0) {

5
arch/m68k/kernel/ptrace.c
View File

@ -19,6 +19,7 @@
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/config.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/page.h>
@ -251,7 +252,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
long tmp;
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL) {
child->thread.work.syscall_trace = ~0;
@ -292,7 +293,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
long tmp;
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
child->thread.work.syscall_trace = 0;
tmp = get_reg(child, PT_SR) | (TRACE_BITS << 16);

5
arch/m68knommu/kernel/ptrace.c
View File

@ -19,6 +19,7 @@
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/config.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/page.h>
@ -240,7 +241,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
long tmp;
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
@ -278,7 +279,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
long tmp;
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
tmp = get_reg(child, PT_SR) | (TRACE_BITS << 16);

3
arch/mips/kernel/ptrace.c
View File

@ -26,6 +26,7 @@
#include <linux/smp_lock.h>
#include <linux/user.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <asm/cpu.h>
#include <asm/fpu.h>
@ -257,7 +258,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL) {
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);

3
arch/mips/kernel/ptrace32.c
View File

@ -24,6 +24,7 @@
#include <linux/smp_lock.h>
#include <linux/user.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <asm/cpu.h>
#include <asm/fpu.h>
@ -241,7 +242,7 @@ asmlinkage int sys32_ptrace(int request, int pid, int addr, int data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
if ((unsigned int) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL) {
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);

7
arch/parisc/kernel/ptrace.c
View File

@ -17,6 +17,7 @@
#include <linux/personality.h>
#include <linux/security.h>
#include <linux/compat.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
@ -285,7 +286,7 @@ long sys_ptrace(long request, pid_t pid, long addr, long data)
ret = -EIO;
DBG("sys_ptrace(%s)\n",
request == PTRACE_SYSCALL ? "SYSCALL" : "CONT");
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
goto out_tsk;
child->ptrace &= ~(PT_SINGLESTEP|PT_BLOCKSTEP);
if (request == PTRACE_SYSCALL) {
@ -311,7 +312,7 @@ long sys_ptrace(long request, pid_t pid, long addr, long data)
case PTRACE_SINGLEBLOCK:
DBG("sys_ptrace(SINGLEBLOCK)\n");
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
goto out_tsk;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
child->ptrace &= ~PT_SINGLESTEP;
@ -328,7 +329,7 @@ long sys_ptrace(long request, pid_t pid, long addr, long data)
case PTRACE_SINGLESTEP:
DBG("sys_ptrace(SINGLESTEP)\n");
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
goto out_tsk;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);

5
arch/ppc/kernel/ptrace.c
View File

@ -26,6 +26,7 @@
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/page.h>
@ -356,7 +357,7 @@ int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL) {
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
@ -389,7 +390,7 @@ int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SINGLESTEP: { /* set the trap flag. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
set_single_step(child);

5
arch/ppc64/kernel/ptrace.c
View File

@ -28,6 +28,7 @@
#include <linux/security.h>
#include <linux/audit.h>
#include <linux/seccomp.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/page.h>
@ -162,7 +163,7 @@ int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
@ -194,7 +195,7 @@ int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SINGLESTEP: { /* set the trap flag. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
set_single_step(child);

5
arch/ppc64/kernel/ptrace32.c
View File

@ -26,6 +26,7 @@
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/page.h>
@ -293,7 +294,7 @@ int sys32_ptrace(long request, long pid, unsigned long addr, unsigned long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
@ -325,7 +326,7 @@ int sys32_ptrace(long request, long pid, unsigned long addr, unsigned long data)
case PTRACE_SINGLESTEP: { /* set the trap flag. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
set_single_step(child);

5
arch/s390/kernel/ptrace.c
View File

@ -32,6 +32,7 @@
#include <linux/user.h>
#include <linux/security.h>
#include <linux/audit.h>
#include <linux/signal.h>
#include <asm/segment.h>
#include <asm/page.h>
@ -609,7 +610,7 @@ do_ptrace(struct task_struct *child, long request, long addr, long data)
/* continue and stop at next (return from) syscall */
case PTRACE_CONT:
/* restart after signal. */
if ((unsigned long) data >= _NSIG)
if (!valid_signal(data))
return -EIO;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
@ -637,7 +638,7 @@ do_ptrace(struct task_struct *child, long request, long addr, long data)
case PTRACE_SINGLESTEP:
/* set the trap flag. */
if ((unsigned long) data >= _NSIG)
if (!valid_signal(data))
return -EIO;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
child->exit_code = data;

5
arch/sh/kernel/ptrace.c
View File

@ -20,6 +20,7 @@
#include <linux/user.h>
#include <linux/slab.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <asm/io.h>
#include <asm/uaccess.h>
@ -197,7 +198,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
@ -228,7 +229,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
struct pt_regs *dummy = NULL;
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
if ((child->ptrace & PT_DTRACE) == 0) {

5
arch/sh64/kernel/ptrace.c
View File

@ -27,6 +27,7 @@
#include <linux/errno.h>
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/signal.h>
#include <asm/io.h>
#include <asm/uaccess.h>
@ -255,7 +256,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
@ -285,7 +286,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
struct pt_regs *regs;
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
if ((child->ptrace & PT_DTRACE) == 0) {

3
arch/sparc/kernel/ptrace.c
View File

@ -18,6 +18,7 @@
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <asm/pgtable.h>
#include <asm/system.h>
@ -526,7 +527,7 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
addr = 1;
case PTRACE_CONT: { /* restart after signal. */
if (data > _NSIG) {
if (!valid_signal(data)) {
pt_error_return(regs, EIO);
goto out_tsk;
}

3
arch/sparc64/kernel/ptrace.c
View File

@ -19,6 +19,7 @@
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <asm/asi.h>
#include <asm/pgtable.h>
@ -559,7 +560,7 @@ asmlinkage void do_ptrace(struct pt_regs *regs)
addr = 1;
case PTRACE_CONT: { /* restart after signal. */
if (data > _NSIG) {
if (!valid_signal(data)) {
pt_error_return(regs, EIO);
goto out_tsk;
}

4
arch/um/kernel/ptrace.c
View File

@ -143,7 +143,7 @@ long sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
case PTRACE_CONT: { /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
child->ptrace &= ~PT_DTRACE;
@ -179,7 +179,7 @@ long sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_SINGLESTEP: { /* set the trap flag. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
child->ptrace |= PT_DTRACE;

3
arch/v850/kernel/ptrace.c
View File

@ -23,6 +23,7 @@
#include <linux/sched.h>
#include <linux/smp_lock.h>
#include <linux/ptrace.h>
#include <linux/signal.h>
#include <asm/errno.h>
#include <asm/ptrace.h>
@ -208,7 +209,7 @@ int sys_ptrace(long request, long pid, long addr, long data)
/* Execute a single instruction. */
case PTRACE_SINGLESTEP:
rval = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
/* Turn CHILD's single-step flag on or off. */

5
arch/x86_64/kernel/ptrace.c
View File

@ -18,6 +18,7 @@
#include <linux/security.h>
#include <linux/audit.h>
#include <linux/seccomp.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
@ -467,7 +468,7 @@ asmlinkage long sys_ptrace(long request, long pid, unsigned long addr, long data
case PTRACE_CONT: /* restart after signal. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child,TIF_SYSCALL_TRACE);
@ -529,7 +530,7 @@ asmlinkage long sys_ptrace(long request, long pid, unsigned long addr, long data
case PTRACE_SINGLESTEP: /* set the trap flag. */
ret = -EIO;
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
break;
clear_tsk_thread_flag(child,TIF_SYSCALL_TRACE);
set_singlestep(child);

3
drivers/char/vt_ioctl.c
View File

@ -24,6 +24,7 @@
#include <linux/major.h>
#include <linux/fs.h>
#include <linux/console.h>
#include <linux/signal.h>
#include <asm/io.h>
#include <asm/uaccess.h>
@ -641,7 +642,7 @@ int vt_ioctl(struct tty_struct *tty, struct file * file,
extern int spawnpid, spawnsig;
if (!perm || !capable(CAP_KILL))
return -EPERM;
if (arg < 1 || arg > _NSIG || arg == SIGKILL)
if (!valid_signal(arg) || arg < 1 || arg == SIGKILL)
return -EINVAL;
spawnpid = current->pid;
spawnsig = arg;

3
fs/fcntl.c
View File

@ -15,6 +15,7 @@
#include <linux/module.h>
#include <linux/security.h>
#include <linux/ptrace.h>
#include <linux/signal.h>
#include <asm/poll.h>
#include <asm/siginfo.h>
@ -308,7 +309,7 @@ static long do_fcntl(int fd, unsigned int cmd, unsigned long arg,
break;
case F_SETSIG:
/* arg == 0 restores default behaviour. */
if (arg < 0 || arg > _NSIG) {
if (!valid_signal(arg)) {
break;
}
err = 0;

4
ipc/mqueue.c
View File

@ -23,6 +23,7 @@
#include <linux/skbuff.h>
#include <linux/netlink.h>
#include <linux/syscalls.h>
#include <linux/signal.h>
#include <net/sock.h>
#include "util.h"
@ -976,8 +977,7 @@ asmlinkage long sys_mq_notify(mqd_t mqdes,
notification.sigev_notify != SIGEV_THREAD))
return -EINVAL;
if (notification.sigev_notify == SIGEV_SIGNAL &&
(notification.sigev_signo < 0 ||
notification.sigev_signo > _NSIG)) {
!valid_signal(notification.sigev_signo)) {
return -EINVAL;
}
if (notification.sigev_notify == SIGEV_THREAD) {

5
kernel/exit.c
View File

@ -27,6 +27,7 @@
#include <linux/mempolicy.h>
#include <linux/cpuset.h>
#include <linux/syscalls.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>
@ -277,7 +278,7 @@ void set_special_pids(pid_t session, pid_t pgrp)
*/
int allow_signal(int sig)
{
if (sig < 1 || sig > _NSIG)
if (!valid_signal(sig) || sig < 1)
return -EINVAL;
spin_lock_irq(&current->sighand->siglock);
@ -298,7 +299,7 @@ EXPORT_SYMBOL(allow_signal);
int disallow_signal(int sig)
{
if (sig < 1 || sig > _NSIG)
if (!valid_signal(sig) || sig < 1)
return -EINVAL;
spin_lock_irq(&current->sighand->siglock);

3
kernel/futex.c
View File

@ -39,6 +39,7 @@
#include <linux/mount.h>
#include <linux/pagemap.h>
#include <linux/syscalls.h>
#include <linux/signal.h>
#define FUTEX_HASHBITS (CONFIG_BASE_SMALL ? 4 : 8)
@ -654,7 +655,7 @@ static int futex_fd(unsigned long uaddr, int signal)
int ret, err;
ret = -EINVAL;
if (signal < 0 || signal > _NSIG)
if (!valid_signal(signal))
goto out;
ret = get_unused_fd();

3
kernel/ptrace.c
View File

@ -16,6 +16,7 @@
#include <linux/smp_lock.h>
#include <linux/ptrace.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <asm/pgtable.h>
#include <asm/uaccess.h>
@ -166,7 +167,7 @@ bad:
int ptrace_detach(struct task_struct *child, unsigned int data)
{
if ((unsigned long) data > _NSIG)
if (!valid_signal(data))
return -EIO;
/* Architecture-specific hardware disable .. */

9
kernel/signal.c
View File

@ -23,6 +23,7 @@
#include <linux/syscalls.h>
#include <linux/ptrace.h>
#include <linux/posix-timers.h>
#include <linux/signal.h>
#include <asm/param.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>
@ -646,7 +647,7 @@ static int check_kill_permission(int sig, struct siginfo *info,
struct task_struct *t)
{
int error = -EINVAL;
if (sig < 0 || sig > _NSIG)
if (!valid_signal(sig))
return error;
error = -EPERM;
if ((!info || ((unsigned long)info != 1 &&
@ -1245,7 +1246,7 @@ send_sig_info(int sig, struct siginfo *info, struct task_struct *p)
* Make sure legacy kernel users don't send in bad values
* (normal paths check this in check_kill_permission).
*/
if (sig < 0 || sig > _NSIG)
if (!valid_signal(sig))
return -EINVAL;
/*
@ -1520,7 +1521,7 @@ void do_notify_parent(struct task_struct *tsk, int sig)
if (psig->action[SIGCHLD-1].sa.sa_handler == SIG_IGN)
sig = 0;
}
if (sig > 0 && sig <= _NSIG)
if (valid_signal(sig) && sig > 0)
__group_send_sig_info(sig, &info, tsk->parent);
__wake_up_parent(tsk, tsk->parent);
spin_unlock_irqrestore(&psig->siglock, flags);
@ -2364,7 +2365,7 @@ do_sigaction(int sig, const struct k_sigaction *act, struct k_sigaction *oact)
{
struct k_sigaction *k;
if (sig < 1 || sig > _NSIG || (act && sig_kernel_only(sig)))
if (!valid_signal(sig) || sig < 1 || (act && sig_kernel_only(sig)))
return -EINVAL;
k = &current->sighand->action[sig-1];

3
kernel/sys.c
View File

@ -25,6 +25,7 @@
#include <linux/dcookies.h>
#include <linux/suspend.h>
#include <linux/tty.h>
#include <linux/signal.h>
#include <linux/compat.h>
#include <linux/syscalls.h>
@ -1637,7 +1638,7 @@ asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
switch (option) {
case PR_SET_PDEATHSIG:
sig = arg2;
if (sig < 0 || sig > _NSIG) {
if (!valid_signal(sig)) {
error = -EINVAL;
break;
}