Do not allow taskset for kernel threads.
These commands will cause oopses due to stack corruption:
ls /proc/*/task | grep -v ^/ | xargs echo | xargs -n1 taskset -pc 2-9
taskset -pc 1 $$
taskset -pc 0 $((pidof john))
Possible fix in userland:
for i in ` ls /proc/*/task | grep -v ^/ `
do
e=/proc/*/task/$i/exe
if test -e $e
then
taskset -pc 2-9 $i
fi
done
Signed-off-by: Olaf Hering <[EMAIL PROTECTED]>
---
kernel/sched.c | 2 ++
1 file changed, 2 insertions(+)
Index: linux-2.6.20/kernel/sched.c
===================================================================
--- linux-2.6.20.orig/kernel/sched.c
+++ linux-2.6.20/kernel/sched.c
@@ -4310,6 +4310,8 @@ long sched_setaffinity(pid_t pid, cpumas
read_unlock(&tasklist_lock);
retval = -EPERM;
+ if (!p->mm)
+ goto out_unlock;
if ((current->euid != p->euid) && (current->euid != p->uid) &&
!capable(CAP_SYS_NICE))
goto out_unlock;
-
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