diff options
| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-06-27 21:01:09 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-06-27 21:01:09 -0300 |
| commit | b907a8622e39eecfc4b243f3be3ad26559d1faee (patch) | |
| tree | b99ead386fccde5ea8252b5b5ebff8ffd83cd03d /arch/parisc/kernel | |
| parent | 68f052d01b53b858897d80beb0095920abe5868e (diff) | |
Linux-libre 4.6.3-gnupck-4.6.3-gnu
Diffstat (limited to 'arch/parisc/kernel')
| -rw-r--r-- | arch/parisc/kernel/unaligned.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/parisc/kernel/unaligned.c b/arch/parisc/kernel/unaligned.c index d7c0acb35..8d49614d6 100644 --- a/arch/parisc/kernel/unaligned.c +++ b/arch/parisc/kernel/unaligned.c @@ -666,7 +666,7 @@ void handle_unaligned(struct pt_regs *regs) break; } - if (modify && R1(regs->iir)) + if (ret == 0 && modify && R1(regs->iir)) regs->gr[R1(regs->iir)] = newbase; @@ -677,6 +677,14 @@ void handle_unaligned(struct pt_regs *regs) if (ret) { + /* + * The unaligned handler failed. + * If we were called by __get_user() or __put_user() jump + * to it's exception fixup handler instead of crashing. + */ + if (!user_mode(regs) && fixup_exception(regs)) + return; + printk(KERN_CRIT "Unaligned handler failed, ret = %d\n", ret); die_if_kernel("Unaligned data reference", regs, 28); |