From: Patrick Farrell <p...@cray.com> The mmap_sem is downed in vvp_mmap_locks, but in case of error from cl_io_lock_alloc_add, it is not upped.
Credit to Paul Casella at Cray for finding this. Signed-off-by: Patrick Farrell <p...@cray.com> Reviewed-on: http://review.whamcloud.com/10741 Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5221 Reviewed-by: Andreas Dilger <andreas.dil...@intel.com> Signed-off-by: Oleg Drokin <oleg.dro...@intel.com> --- drivers/staging/lustre/lustre/llite/vvp_io.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/staging/lustre/lustre/llite/vvp_io.c b/drivers/staging/lustre/lustre/llite/vvp_io.c index 0e0b404..04230ed 100644 --- a/drivers/staging/lustre/lustre/llite/vvp_io.c +++ b/drivers/staging/lustre/lustre/llite/vvp_io.c @@ -269,8 +269,10 @@ static int vvp_mmap_locks(const struct lu_env *env, descr->cld_mode, descr->cld_start, descr->cld_end); - if (result < 0) + if (result < 0) { + up_read(&mm->mmap_sem); return result; + } if (vma->vm_end - addr >= count) break; -- 1.9.0 _______________________________________________ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
