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git.karo-electronics.de Git - linux-beck.git/commit
perfcounters: fix use after free in perf_release()
running...
while true; do
foo -d 1 -f 1 -c 100000 & sleep 1
kerneltop -d 1 -f 1 -e 1 -c 25000 -p `pidof foo`
done
while true; do
killall foo; killall kerneltop; sleep 2
done
...in two shells with SLUB_DEBUG enabled produces flood of:
BUG task_struct: Poison overwritten.
Fix the use-after-free bug in perf_release().
Signed-off-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>