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[SCSI] fix use-after-free in scsi_init_io()

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we're using a pointer through a freed command to reset the request,
which has shown up as an oops with slab poisoning:

Reported-by: Tejun Heo <tj@kernel.org>
Reported-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
James Bottomley 2010-08-16 10:06:26 -05:00
parent 7e44331240
commit 3a5c19c23d
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/scsi_lib.c
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@ -1011,8 +1011,8 @@ int scsi_init_io(struct scsi_cmnd *cmd, gfp_t gfp_mask)
err_exit:
scsi_release_buffers(cmd);
scsi_put_command(cmd);
cmd->request->special = NULL;
scsi_put_command(cmd);
return error;
}
EXPORT_SYMBOL(scsi_init_io);