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| author |   Nicholas Bellinger <nab@linux-iscsi.org> | 2015-03-05 03:28:24 +0000 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2015-03-19 23:26:44 -0700 |
| commit | 5f7da044f8bc1cfb21c962edf34bd5699a76e7ae (patch) | |
| tree | dfc0f05b41de7359dd2d6099a498b91a8f3334d5 /drivers/coresight | |
| parent | target/pscsi: Fix NULL pointer dereference in get_device_type (diff) | |
| download | linux-dev-5f7da044f8bc1cfb21c962edf34bd5699a76e7ae.tar.xz linux-dev-5f7da044f8bc1cfb21c962edf34bd5699a76e7ae.zip | |
target: Fix virtual LUN=0 target_configure_device failure OOPs
This patch fixes a NULL pointer dereference triggered by a late
target_configure_device() -> alloc_workqueue() failure that results
in target_free_device() being called with DF_CONFIGURED already set,
which subsequently OOPses in destroy_workqueue() code.
Currently this only happens at modprobe target_core_mod time when
core_dev_setup_virtual_lun0() -> target_configure_device() fails,
and the explicit target_free_device() gets called.
To address this bug originally introduced by commit 0fd97ccf45, go
ahead and move DF_CONFIGURED to end of target_configure_device()
code to handle this special failure case.
Reported-by: Claudio Fleiner <cmf@daterainc.com>
Cc: Claudio Fleiner <cmf@daterainc.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: <stable@vger.kernel.org> # v3.7+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/coresight')
0 files changed, 0 insertions, 0 deletions