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IB/srp: Fix use-after-free in srp_reset_req()

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srp_free_req() uses the scsi_cmnd structure contents to unmap
buffers, so we must invoke srp_free_req() before we release
ownership of that structure.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: David Dillow <dillowda@ornl.gov>
Cc: <stable@vger.kernel.org>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Bart Van Assche 2012-08-24 10:27:54 +00:00 committed by Roland Dreier
parent 979570e029
commit 9b796d06d5
1 changed files with 1 additions and 1 deletions
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2
drivers/infiniband/ulp/srp/ib_srp.c
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@ -638,9 +638,9 @@ static void srp_reset_req(struct srp_target_port *target, struct srp_request *re
struct scsi_cmnd *scmnd = srp_claim_req(target, req, NULL);
if (scmnd) {
srp_free_req(target, req, scmnd, 0);
scmnd->result = DID_RESET << 16;
scmnd->scsi_done(scmnd);
srp_free_req(target, req, scmnd, 0);
}
}