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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6

Browse source 
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc64: Use a TS_RESTORE_SIGMASK
  lmb: Make lmb debugging more useful.
  lmb: Fix inconsistent alignment of size argument.
  sparc: Fix mremap address range validation.
This commit is contained in:
Linus Torvalds 2008-05-14 19:11:36 -07:00
commit 8978a31883
10 changed files with 89 additions and 151 deletions
Download patch file Download diff file Expand all files Collapse all files

48
arch/sparc/kernel/sys_sparc.c
View file

@ -219,7 +219,7 @@ out:
return err;
}
int sparc_mmap_check(unsigned long addr, unsigned long len, unsigned long flags)
int sparc_mmap_check(unsigned long addr, unsigned long len)
{
if (ARCH_SUN4C_SUN4 &&
(len > 0x20000000 ||
@ -295,52 +295,14 @@ asmlinkage unsigned long sparc_mremap(unsigned long addr,
unsigned long old_len, unsigned long new_len,
unsigned long flags, unsigned long new_addr)
{
struct vm_area_struct *vma;
unsigned long ret = -EINVAL;
if (ARCH_SUN4C_SUN4) {
if (old_len > 0x20000000 || new_len > 0x20000000)
goto out;
if (addr < 0xe0000000 && addr + old_len > 0x20000000)
goto out;
}
if (old_len > TASK_SIZE - PAGE_SIZE ||
new_len > TASK_SIZE - PAGE_SIZE)
if (unlikely(sparc_mmap_check(addr, old_len)))
goto out;
if (unlikely(sparc_mmap_check(new_addr, new_len)))
goto out;
down_write(&current->mm->mmap_sem);
if (flags & MREMAP_FIXED) {
if (ARCH_SUN4C_SUN4 &&
new_addr < 0xe0000000 &&
new_addr + new_len > 0x20000000)
goto out_sem;
if (new_addr + new_len > TASK_SIZE - PAGE_SIZE)
goto out_sem;
} else if ((ARCH_SUN4C_SUN4 && addr < 0xe0000000 &&
addr + new_len > 0x20000000) ||
addr + new_len > TASK_SIZE - PAGE_SIZE) {
unsigned long map_flags = 0;
struct file *file = NULL;
ret = -ENOMEM;
if (!(flags & MREMAP_MAYMOVE))
goto out_sem;
vma = find_vma(current->mm, addr);
if (vma) {
if (vma->vm_flags & VM_SHARED)
map_flags |= MAP_SHARED;
file = vma->vm_file;
}
new_addr = get_unmapped_area(file, addr, new_len,
vma ? vma->vm_pgoff : 0,
map_flags);
ret = new_addr;
if (new_addr & ~PAGE_MASK)
goto out_sem;
flags |= MREMAP_FIXED;
}
ret = do_mremap(addr, old_len, new_len, flags, new_addr);
out_sem:
up_write(&current->mm->mmap_sem);
out:
return ret;

6
arch/sparc64/kernel/rtrap.S
View file

@ -46,7 +46,7 @@ __handle_user_windows:
wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
ldx [%g6 + TI_FLAGS], %l0
1: andcc %l0, (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK), %g0
1: andcc %l0, _TIF_SIGPENDING, %g0
be,pt %xcc, __handle_user_windows_continue
nop
mov %l5, %o1
@ -86,7 +86,7 @@ __handle_perfctrs:
wrpr %g0, RTRAP_PSTATE, %pstate
wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
ldx [%g6 + TI_FLAGS], %l0
1: andcc %l0, (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK), %g0
1: andcc %l0, _TIF_SIGPENDING, %g0
be,pt %xcc, __handle_perfctrs_continue
sethi %hi(TSTATE_PEF), %o0
@ -195,7 +195,7 @@ __handle_preemption_continue:
andcc %l1, %o0, %g0
andcc %l0, _TIF_NEED_RESCHED, %g0
bne,pn %xcc, __handle_preemption
andcc %l0, (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK), %g0
andcc %l0, _TIF_SIGPENDING, %g0
bne,pn %xcc, __handle_signal
__handle_signal_continue:
ldub [%g6 + TI_WSAVED], %o2

21
arch/sparc64/kernel/signal.c
View file

@ -247,7 +247,9 @@ static long _sigpause_common(old_sigset_t set)
current->state = TASK_INTERRUPTIBLE;
schedule();
set_thread_flag(TIF_RESTORE_SIGMASK);
set_restore_sigmask();
return -ERESTARTNOHAND;
}
@ -537,7 +539,7 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
} else
restart_syscall = 0;
if (test_thread_flag(TIF_RESTORE_SIGMASK))
if (current_thread_info()->status & TS_RESTORE_SIGMASK)
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
@ -566,13 +568,12 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
syscall_restart(orig_i0, regs, &ka.sa);
handle_signal(signr, &ka, &info, oldset, regs);
/* a signal was successfully delivered; the saved
/* A signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TIF_RESTORE_SIGMASK flag.
* clear the TS_RESTORE_SIGMASK flag.
*/
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
return;
}
if (restart_syscall &&
@ -591,17 +592,17 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
regs->tnpc -= 4;
}
/* if there's no signal to deliver, we just put the saved sigmask
/* If there's no signal to deliver, we just put the saved sigmask
* back
*/
if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
clear_thread_flag(TIF_RESTORE_SIGMASK);
if (current_thread_info()->status & TS_RESTORE_SIGMASK) {
current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
}
}
void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0, unsigned long thread_info_flags)
{
if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))
if (thread_info_flags & _TIF_SIGPENDING)
do_signal(regs, orig_i0);
}

13
arch/sparc64/kernel/signal32.c
View file

@ -788,13 +788,12 @@ void do_signal32(sigset_t *oldset, struct pt_regs * regs,
syscall_restart32(orig_i0, regs, &ka.sa);
handle_signal32(signr, &ka, &info, oldset, regs);
/* a signal was successfully delivered; the saved
/* A signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TIF_RESTORE_SIGMASK flag.
* clear the TS_RESTORE_SIGMASK flag.
*/
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
return;
}
if (restart_syscall &&
@ -813,11 +812,11 @@ void do_signal32(sigset_t *oldset, struct pt_regs * regs,
regs->tnpc -= 4;
}
/* if there's no signal to deliver, we just put the saved sigmask
/* If there's no signal to deliver, we just put the saved sigmask
* back
*/
if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
clear_thread_flag(TIF_RESTORE_SIGMASK);
if (current_thread_info()->status & TS_RESTORE_SIGMASK) {
current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
}
}

36
arch/sparc64/kernel/sys_sparc.c
View file

@ -542,8 +542,7 @@ asmlinkage long sparc64_personality(unsigned long personality)
return ret;
}
int sparc64_mmap_check(unsigned long addr, unsigned long len,
unsigned long flags)
int sparc64_mmap_check(unsigned long addr, unsigned long len)
{
if (test_thread_flag(TIF_32BIT)) {
if (len >= STACK_TOP32)
@ -609,46 +608,19 @@ asmlinkage unsigned long sys64_mremap(unsigned long addr,
unsigned long old_len, unsigned long new_len,
unsigned long flags, unsigned long new_addr)
{
struct vm_area_struct *vma;
unsigned long ret = -EINVAL;
if (test_thread_flag(TIF_32BIT))
goto out;
if (unlikely(new_len >= VA_EXCLUDE_START))
goto out;
if (unlikely(invalid_64bit_range(addr, old_len)))
if (unlikely(sparc64_mmap_check(addr, old_len)))
goto out;
if (unlikely(sparc64_mmap_check(new_addr, new_len)))
goto out;
down_write(&current->mm->mmap_sem);
if (flags & MREMAP_FIXED) {
if (invalid_64bit_range(new_addr, new_len))
goto out_sem;
} else if (invalid_64bit_range(addr, new_len)) {
unsigned long map_flags = 0;
struct file *file = NULL;
ret = -ENOMEM;
if (!(flags & MREMAP_MAYMOVE))
goto out_sem;
vma = find_vma(current->mm, addr);
if (vma) {
if (vma->vm_flags & VM_SHARED)
map_flags |= MAP_SHARED;
file = vma->vm_file;
}
/* MREMAP_FIXED checked above. */
new_addr = get_unmapped_area(file, addr, new_len,
vma ? vma->vm_pgoff : 0,
map_flags);
ret = new_addr;
if (new_addr & ~PAGE_MASK)
goto out_sem;
flags |= MREMAP_FIXED;
}
ret = do_mremap(addr, old_len, new_len, flags, new_addr);
out_sem:
up_write(&current->mm->mmap_sem);
out:
return ret;

33
arch/sparc64/kernel/sys_sparc32.c
View file

@ -867,44 +867,15 @@ asmlinkage unsigned long sys32_mremap(unsigned long addr,
unsigned long old_len, unsigned long new_len,
unsigned long flags, u32 __new_addr)
{
struct vm_area_struct *vma;
unsigned long ret = -EINVAL;
unsigned long new_addr = __new_addr;
if (old_len > STACK_TOP32 || new_len > STACK_TOP32)
if (unlikely(sparc64_mmap_check(addr, old_len)))
goto out;
if (addr > STACK_TOP32 - old_len)
if (unlikely(sparc64_mmap_check(new_addr, new_len)))
goto out;
down_write(&current->mm->mmap_sem);
if (flags & MREMAP_FIXED) {
if (new_addr > STACK_TOP32 - new_len)
goto out_sem;
} else if (addr > STACK_TOP32 - new_len) {
unsigned long map_flags = 0;
struct file *file = NULL;
ret = -ENOMEM;
if (!(flags & MREMAP_MAYMOVE))
goto out_sem;
vma = find_vma(current->mm, addr);
if (vma) {
if (vma->vm_flags & VM_SHARED)
map_flags |= MAP_SHARED;
file = vma->vm_file;
}
/* MREMAP_FIXED checked above. */
new_addr = get_unmapped_area(file, addr, new_len,
vma ? vma->vm_pgoff : 0,
map_flags);
ret = new_addr;
if (new_addr & ~PAGE_MASK)
goto out_sem;
flags |= MREMAP_FIXED;
}
ret = do_mremap(addr, old_len, new_len, flags, new_addr);
out_sem:
up_write(&current->mm->mmap_sem);
out:
return ret;