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| author | Matthew Wilcox <[email protected]> | 2019-02-05 04:12:08 +0000 |
|---|---|---|
| committer | Matthew Wilcox <[email protected]> | 2019-02-05 04:15:30 +0000 |
| commit | bd54211b8e199ffb701ec98bf4f301e4a6f38a92 (patch) | |
| tree | 15204320fbdc50172361d898e053f8341a8799ea /lib/test_xarray.c | |
| parent | Linux 5.0-rc5 (diff) | |
| download | kernel-bd54211b8e199ffb701ec98bf4f301e4a6f38a92.tar.gz kernel-bd54211b8e199ffb701ec98bf4f301e4a6f38a92.zip | |
XArray tests: RCU lock prohibits GFP_KERNEL
Drop and reacquire the RCU read lock while using GFP_KERNEL.
Reported-by: Li RongQing <[email protected]>
Signed-off-by: Matthew Wilcox <[email protected]>
Diffstat (limited to 'lib/test_xarray.c')
| -rw-r--r-- | lib/test_xarray.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/test_xarray.c b/lib/test_xarray.c index c596a957f764..671a93ee09e6 100644 --- a/lib/test_xarray.c +++ b/lib/test_xarray.c @@ -107,8 +107,11 @@ static noinline void check_xas_retry(struct xarray *xa) XA_BUG_ON(xa, xas.xa_node != XAS_RESTART); XA_BUG_ON(xa, xas_next_entry(&xas, ULONG_MAX) != xa_mk_value(0)); XA_BUG_ON(xa, xas.xa_node != NULL); + rcu_read_unlock(); XA_BUG_ON(xa, xa_store_index(xa, 1, GFP_KERNEL) != NULL); + + rcu_read_lock(); XA_BUG_ON(xa, !xa_is_internal(xas_reload(&xas))); xas.xa_node = XAS_RESTART; XA_BUG_ON(xa, xas_next_entry(&xas, ULONG_MAX) != xa_mk_value(0)); |