On Fri, Sep 15, 2017 at 01:21:52PM +0800, shuwang@xxxxxxxxxx wrote: > From: Shu Wang <shuwang@xxxxxxxxxx> > > Kmemleak reports about a thousand false positives for fusion-> > cmd_list[]. Root casue is the cmd_list objects are allocated from > slab allocator, and stored its pointer in object allocated by page > allocator. The fix will tell kmemleak to track and scan fusion > object. > > V2: > Add comment, balance braces, move kmemleak_free before free_pages. > checkpatch passed. > > Before patch: > kmemleak: 1004 new suspected memory leaks (see /sys/kernel/debug/kmemleak) > > unreferenced object 0xffff88042584e000 (size 8192): > backtrace: > kmemleak_alloc+0x4a/0xa0 > __kmalloc+0xec/0x220 > megasas_alloc_cmdlist_fusion+0x3e/0x140 [megaraid_sas] > megasas_alloc_cmds_fusion+0x44/0x450 [megaraid_sas] > megasas_init_adapter_fusion+0x21d/0x6e0 [megaraid_sas] > megasas_init_fw+0x357/0xd30 [megaraid_sas] > megasas_probe_one.part.34+0x5be/0x1040 [megaraid_sas] > megasas_probe_one+0x46/0xc0 [megaraid_sas] > local_pci_probe+0x45/0xa0 > work_for_cpu_fn+0x14/0x20 > process_one_work+0x149/0x360 > worker_thread+0x1d8/0x3c0 > kthread+0x109/0x140 > ret_from_fork+0x25/0x30 > > Signed-off-by: Shu Wang <shuwang@xxxxxxxxxx> Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx> Thanks. -- Catalin
