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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2011-11-28 12:33:10 +0100 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2011-12-06 06:00:57 +0000 |
| commit | 9649fa1b8764f64c8cc4293e197e14cd46fe7205 (patch) | |
| tree | c22257cf450c45ae663db66604ee09e230939e4d /include | |
| parent | 5c73b678f729ea087ef57b59a5d7b5dd3a97042b (diff) | |
| download | linux-9649fa1b8764f64c8cc4293e197e14cd46fe7205.tar.gz linux-9649fa1b8764f64c8cc4293e197e14cd46fe7205.tar.bz2 linux-9649fa1b8764f64c8cc4293e197e14cd46fe7205.zip | |
target/file: walk properly over sg list
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>
Cc: stable@kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions