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| author | Jiri Kosina <jkosina@suse.cz> | 2012-08-02 15:33:59 +0200 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2012-08-03 11:25:12 +0100 |
| commit | 5b24c421621792fcc588af6f644d6acf2dd798cc (patch) | |
| tree | bc89e67b20c47a8bacde1b82d087054e941aee24 | |
| parent | bba3d8c3b3c0f2123be5bc687d1cddc13437c923 (diff) | |
| download | linux-5b24c421621792fcc588af6f644d6acf2dd798cc.tar.gz linux-5b24c421621792fcc588af6f644d6acf2dd798cc.tar.bz2 linux-5b24c421621792fcc588af6f644d6acf2dd798cc.zip | |
[PARISC] fix personality flag check in copy_thread()
Directly comparing task_struct->personality against PER_* is not fully
correct, as it doesn't take flags potentially stored in top three bytes
into account.
Analogically, directly forcefully setting personality to PER_LINUX32 or
PER_LINUX discards any flags stored in the top three bytes.
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| -rw-r--r-- | arch/parisc/kernel/process.c | 2 | ||||
| -rw-r--r-- | arch/parisc/kernel/sys_parisc.c | 8 |
2 files changed, 5 insertions, 5 deletions
diff --git a/arch/parisc/kernel/process.c b/arch/parisc/kernel/process.c index d4b94b395c16..2c05a9292a81 100644 --- a/arch/parisc/kernel/process.c +++ b/arch/parisc/kernel/process.c @@ -309,7 +309,7 @@ copy_thread(unsigned long clone_flags, unsigned long usp, cregs->ksp = (unsigned long)stack + (pregs->gr[21] & (THREAD_SIZE - 1)); cregs->gr[30] = usp; - if (p->personality == PER_HPUX) { + if (personality(p->personality) == PER_HPUX) { #ifdef CONFIG_HPUX cregs->kpc = (unsigned long) &hpux_child_return; #else diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c index c9b932260f47..7426e40699bd 100644 --- a/arch/parisc/kernel/sys_parisc.c +++ b/arch/parisc/kernel/sys_parisc.c @@ -225,12 +225,12 @@ long parisc_personality(unsigned long personality) long err; if (personality(current->personality) == PER_LINUX32 - && personality == PER_LINUX) - personality = PER_LINUX32; + && personality(personality) == PER_LINUX) + personality = (personality & ~PER_MASK) | PER_LINUX32; err = sys_personality(personality); - if (err == PER_LINUX32) - err = PER_LINUX; + if (personality(err) == PER_LINUX32) + err = (err & ~PER_MASK) | PER_LINUX; return err; } |