Date: Sun, 23 Mar 1997 17:46:17 -0800 (PST) From: "Justin T. Gibbs" <gibbs> To: CVS-committers, cvs-all, cvs-sys Subject: cvs commit: src/sys/scsi scsi_base.c Message-ID: <199703240146.RAA17509@freefall.freebsd.org>
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gibbs 97/03/23 17:46:16 Modified: sys/scsi scsi_base.c Log: free_xs must be called at splbio(). This is usually the case since the main caller is scsi_done which the controller interrupt handlers call. In the case of a non-buffer based transaction, the xs structure is freed by the process that initiated the transfer in scsi_scsi_cmd. In this case, an explicit splbio/splx pair around the call to free_xs is required. Without the splbio protection, the xs free list could be corrupted, and the type driver's start routine might run without spl protection. Submitted by: Tor Egge <Tor.Egge@idt.ntnu.no> Obtained from: PR kern/2891 Revision Changes Path 1.47 +3 -1 src/sys/scsi/scsi_base.c
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