Fix the pagefault oom path which does not drop mm->mmap_sem. This was introduced by commit c7c1e3846bac1e4b8a8941f6a194812e28b0a519 (This is not compile tested) Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx> Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx> --- arch/mips/mm/fault.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/arch/mips/mm/fault.c b/arch/mips/mm/fault.c index 6751ce9..f956ecb 100644 --- a/arch/mips/mm/fault.c +++ b/arch/mips/mm/fault.c @@ -171,6 +171,7 @@ out_of_memory: * We ran out of memory, call the OOM killer, and return the userspace * (which will retry the fault, or kill us if we got oom-killed). */ + up_read(&mm->mmap_sem); pagefault_out_of_memory(); return; -- 1.6.0.6
