Wei Fang 354a086d93 scsi:libsas: fix oops caused by assigning a freed task to ->lldd_task ... A freed task has been assigned to ->lldd_task when lldd_execute_task() failed in sas_ata_qc_issue(), and access of ->lldd_task will cause an oops: Call trace: [<ffffffc000641f64>] sas_ata_post_internal+0x6c/0x150 [<ffffffc0006c0d64>] ata_exec_internal_sg+0x32c/0x588 [<ffffffc0006c1048>] ata_exec_internal+0x88/0xe8 [<ffffffc0006c13b4>] ata_dev_read_id+0x204/0x5e0 [<ffffffc0006c17f0>] ata_dev_reread_id+0x60/0xc8 [<ffffffc0006c3098>] ata_dev_revalidate+0x88/0x1e0 [<ffffffc0006cf828>] ata_eh_recover+0xcf8/0x13a8 [<ffffffc0006d075c>] ata_do_eh+0x5c/0xe0 [<ffffffc0006d0828>] ata_std_error_handler+0x48/0x98 [<ffffffc0006d042c>] ata_scsi_port_error_handler+0x474/0x658 [<ffffffc000641b78>] async_sas_ata_eh+0x50/0x80 [<ffffffc0000ca664>] async_run_entry_fn+0x64/0x180 [<ffffffc0000c085c>] process_one_work+0x164/0x438 [<ffffffc0000c0c74>] worker_thread+0x144/0x4b0 [<ffffffc0000c70fc>] kthread+0xfc/0x110 Fix this by reassigning NULL to ->lldd_task in error path. Signed-off-by: Wei Fang <fangwei1@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>		2016-07-20 20:53:35 -04:00
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Kconfig
Makefile
sas_ata.c	scsi:libsas: fix oops caused by assigning a freed task to ->lldd_task	2016-07-20 20:53:35 -04:00
sas_discover.c
sas_dump.c
sas_dump.h
sas_event.c
sas_expander.c
sas_host_smp.c
sas_init.c
sas_internal.h
sas_phy.c
sas_port.c
sas_scsi_host.c
sas_task.c