ctl ramdisk: Free compare buffer after a compare I/O request.
For a compare request, the ramdisk backend allocates a temporary buffer to hold the I/O data and then compares it against the LUN's pages in ctl_backend_ramdisk_cmp after the data has been filled. However, the tempory buffer was leaked when after the comparison was complete. Fix this by freeing the buffer after the comparison. Reviewed by: mav Sponsored by: Chelsio Communications Differential Revision: https://reviews.freebsd.org/D34316
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@ -386,6 +386,7 @@ ctl_backend_ramdisk_cmp(union ctl_io *io)
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if (res < cbe_lun->blocksize)
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break;
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}
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free(io->scsiio.kern_data_ptr, M_RAMDISK);
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if (lbas > 0) {
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off += io->scsiio.kern_rel_offset - io->scsiio.kern_data_len;
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scsi_u64to8b(off, info);
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