diff options
| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2011-11-28 12:33:10 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-12-21 12:58:30 -0800 |
| commit | 31922adf08bd43e543eebb83adb856a489986aa6 (patch) | |
| tree | e0ee98729d24bacad1b9216da4624e9bdc9edfb0 /mm | |
| parent | 32d7d1813d394c2e74b444cc4226ece55a26739a (diff) | |
target/file: walk properly over sg list
commit 9649fa1b8764f64c8cc4293e197e14cd46fe7205 upstream.
This patch changes fileio to use for_each_sg() when walking se_task->task_sg
memory passed into from loopback LLD struct scsi_cmnd scatterlist memory.
This addresses an issue where FILEIO backends with loopback where hitting the
following OOPs with mkfs.ext2:
|kernel BUG at include/linux/scatterlist.h:97!
|invalid opcode: 0000 [#1] PREEMPT SMP
|Modules linked in: sd_mod tcm_loop target_core_stgt scsi_tgt target_core_pscsi target_core_file target_core_iblock target_core_mod configfs scsi_mod
|
|Pid: 671, comm: LIO_fileio Not tainted 3.1.0-rc10+ #139 Bochs Bochs
|EIP: 0060:[<e0afd746>] EFLAGS: 00010202 CPU: 0
|EIP is at fd_do_task+0x396/0x420 [target_core_file]
| [<e0aa7884>] __transport_execute_tasks+0xd4/0x190 [target_core_mod]
| [<e0aa797c>] transport_execute_tasks+0x3c/0xf0 [target_core_mod]
|EIP: [<e0afd746>] fd_do_task+0x396/0x420 [target_core_file] SS:ESP 0068:dea47e90
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions