diff options
| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-07-29 21:09:39 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-07-29 21:09:39 -0300 |
| commit | 73bcc49959e4e40911dd0dd634bf1b353827df66 (patch) | |
| tree | 6b0c1d440c490a65c51ab5cf5aee7095cb4089d3 /kernel/sys.c | |
| parent | 8447c4d15e357a458c9051ddc84aa6c8b9c27000 (diff) | |
| parent | 28a33cbc24e4256c143dce96c7d93bf423229f92 (diff) | |
Merge tag 'v3.5'
Linux 3.5
* tag 'v3.5': (1242 commits)
Linux 3.5
Remove SYSTEM_SUSPEND_DISK system state
kdb: Switch to nolock variants of kmsg_dump functions
printk: Implement some unlocked kmsg_dump functions
printk: Remove kdb_syslog_data
kdb: Revive dmesg command
dm raid1: set discard_zeroes_data_unsupported
dm thin: do not send discards to shared blocks
dm raid1: fix crash with mirror recovery and discard
pnfs-obj: Fix __r4w_get_page when offset is beyond i_size
pnfs-obj: don't leak objio_state if ore_write/read fails
ore: Unlock r4w pages in exact reverse order of locking
ore: Remove support of partial IO request (NFS crash)
ore: Fix NFS crash by supporting any unaligned RAID IO
UBIFS: fix a bug in empty space fix-up
cx25821: Remove bad strcpy to read-only char*
HID: hid-multitouch: add support for Zytronic panels
MIPS: PCI: Move fixups from __init to __devinit.
MIPS: Fix bug.h MIPS build regression
MIPS: sync-r4k: remove redundant irq operation
...
Diffstat (limited to 'kernel/sys.c')
| -rw-r--r-- | kernel/sys.c | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/kernel/sys.c b/kernel/sys.c index f0ec44dcd41..2d39a84cd85 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -1788,7 +1788,6 @@ SYSCALL_DEFINE1(umask, int, mask) #ifdef CONFIG_CHECKPOINT_RESTORE static int prctl_set_mm_exe_file(struct mm_struct *mm, unsigned int fd) { - struct vm_area_struct *vma; struct file *exe_file; struct dentry *dentry; int err; @@ -1816,13 +1815,17 @@ static int prctl_set_mm_exe_file(struct mm_struct *mm, unsigned int fd) down_write(&mm->mmap_sem); /* - * Forbid mm->exe_file change if there are mapped other files. + * Forbid mm->exe_file change if old file still mapped. */ err = -EBUSY; - for (vma = mm->mmap; vma; vma = vma->vm_next) { - if (vma->vm_file && !path_equal(&vma->vm_file->f_path, - &exe_file->f_path)) - goto exit_unlock; + if (mm->exe_file) { + struct vm_area_struct *vma; + + for (vma = mm->mmap; vma; vma = vma->vm_next) + if (vma->vm_file && + path_equal(&vma->vm_file->f_path, + &mm->exe_file->f_path)) + goto exit_unlock; } /* @@ -1835,6 +1838,7 @@ static int prctl_set_mm_exe_file(struct mm_struct *mm, unsigned int fd) if (test_and_set_bit(MMF_EXE_FILE_CHANGED, &mm->flags)) goto exit_unlock; + err = 0; set_mm_exe_file(mm, exe_file); exit_unlock: up_write(&mm->mmap_sem); @@ -2127,9 +2131,6 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3, else return -EINVAL; break; - case PR_GET_TID_ADDRESS: - error = prctl_get_tid_address(me, (int __user **)arg2); - break; default: return -EINVAL; } @@ -2147,6 +2148,9 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3, case PR_SET_MM: error = prctl_set_mm(arg2, arg3, arg4, arg5); break; + case PR_GET_TID_ADDRESS: + error = prctl_get_tid_address(me, (int __user **)arg2); + break; case PR_SET_CHILD_SUBREAPER: me->signal->is_child_subreaper = !!arg2; error = 0; |