github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-27 16:44:58 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

IB/hfi1: Prevent NULL pointer dereference

Browse Source 
Prevent a potential NULL pointer dereference (found
by code inspection) when unregistering an MMU handler.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Jubin John <jubin.john@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Mitko Haralanov 2016-03-08 11:14:31 -08:00 committed by Doug Ledford
parent c81e1f6452
commit 4b00d9490f
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/staging/rdma/hfi1/mmu_rb.c
View File

@ -107,6 +107,9 @@ void hfi1_mmu_rb_unregister(struct rb_root *root)
struct mmu_rb_handler *handler = find_mmu_handler(root);
unsigned long flags;
if (!handler)
return;
spin_lock_irqsave(&mmu_rb_lock, flags);
list_del(&handler->list);
spin_unlock_irqrestore(&mmu_rb_lock, flags);