common/grant_table.c:cache_flush() grabs the rcu lock for the current domain, but only releases it on error paths.
Note that this is not a security issue, as the preempt count is used exclusively for assertions at the moment. Signed-off-by: George Dunlap <[email protected]> Reviewed-by: Jan Beulich <[email protected]> --- CC: Ian Jackson <[email protected]> CC: Wei Liu <[email protected]> CC: Andrew Cooper <[email protected]> CC: Jan Beulich <[email protected]> CC: Tim Deegan <[email protected]> CC: Stefano Stabellini <[email protected]> CC: Konrad Wilk <[email protected]> --- xen/common/grant_table.c | 1 + 1 file changed, 1 insertion(+) diff --git a/xen/common/grant_table.c b/xen/common/grant_table.c index 48c547930c..8346994de6 100644 --- a/xen/common/grant_table.c +++ b/xen/common/grant_table.c @@ -3273,6 +3273,7 @@ static int cache_flush(const gnttab_cache_flush_t *cflush, grant_ref_t *cur_ref) unmap_domain_page(v); put_page(page); + rcu_unlock_domain(d); return ret; } -- 2.15.1 _______________________________________________ Xen-devel mailing list [email protected] https://lists.xenproject.org/mailman/listinfo/xen-devel
