path: root/src/time/clock_gettime.c
diff options
authorRich Felker <>2011-02-19 11:04:36 -0500
committerRich Felker <>2011-02-19 11:04:36 -0500
commit19eb13b9a4cf2f787f60b6e2a6d26a6cd7d3ffd2 (patch)
treec02fa747b1ad7370b689af34f15139cb62fa9863 /src/time/clock_gettime.c
parenta49c119276742d7d212fb88f83a8f559ca549e72 (diff)
race condition fix: block all signals before decrementing thread count
the existence of a (kernelspace) thread must never have observable effects after the thread count is decremented. if signals are not blocked, it could end up handling the signal for rsyscall and contributing towards the count of threads which have changed ids, causing a thread to be missed. this could lead to one thread retaining unwanted privilege level. this change may also address other subtle race conditions in application code that uses signals.
Diffstat (limited to 'src/time/clock_gettime.c')
0 files changed, 0 insertions, 0 deletions