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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2008-03-19 17:59:44 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2008-03-19 17:59:44 -0400 |
| commit | c7c350e92aab1bba68f26a6027b734adcf9824ba (patch) | |
| tree | aa99bd94c3049dd871d9c030d70a5f3d87591a95 /include/asm-parisc/futex.h | |
| parent | 2f42b5d043ee271d1e5d30ecd77186b6c4d4e534 (diff) | |
| parent | f8512ad0da16cbe156f3a7627971cdf0b39c4138 (diff) | |
| download | linux-stable-c7c350e92aab1bba68f26a6027b734adcf9824ba.tar.gz linux-stable-c7c350e92aab1bba68f26a6027b734adcf9824ba.tar.bz2 linux-stable-c7c350e92aab1bba68f26a6027b734adcf9824ba.zip | |
Merge branch 'hotfixes' into devel
Diffstat (limited to 'include/asm-parisc/futex.h')
| -rw-r--r-- | include/asm-parisc/futex.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/include/asm-parisc/futex.h b/include/asm-parisc/futex.h index dbee6e60aa81..fdc6d055ef7f 100644 --- a/include/asm-parisc/futex.h +++ b/include/asm-parisc/futex.h @@ -56,6 +56,12 @@ futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval) int err = 0; int uval; + /* futex.c wants to do a cmpxchg_inatomic on kernel NULL, which is + * our gateway page, and causes no end of trouble... + */ + if (segment_eq(KERNEL_DS, get_fs()) && !uaddr) + return -EFAULT; + if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int))) return -EFAULT; @@ -67,5 +73,5 @@ futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval) return uval; } -#endif -#endif +#endif /*__KERNEL__*/ +#endif /*_ASM_PARISC_FUTEX_H*/ |