Date: Sun, 15 Mar 2015 20:15:11 +0000 (UTC) From: Adrian Chadd <adrian@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r280055 - head/sys/dev/wpi Message-ID: <201503152015.t2FKFBan053594@svn.freebsd.org>
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Author: adrian Date: Sun Mar 15 20:15:10 2015 New Revision: 280055 URL: https://svnweb.freebsd.org/changeset/base/280055 Log: Fix races between wpi_rx_done() and wpi_stop() PR: kern/197143 Submitted by: Andriy Voskoboinyk <s3erios@gmail.com> Modified: head/sys/dev/wpi/if_wpi.c Modified: head/sys/dev/wpi/if_wpi.c ============================================================================== --- head/sys/dev/wpi/if_wpi.c Sun Mar 15 20:13:58 2015 (r280054) +++ head/sys/dev/wpi/if_wpi.c Sun Mar 15 20:15:10 2015 (r280055) @@ -1952,6 +1952,12 @@ wpi_notif_intr(struct wpi_softc *sc) case WPI_RX_DONE: /* An 802.11 frame has been received. */ wpi_rx_done(sc, desc, data); + + if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { + /* wpi_stop() was called. */ + return; + } + break; case WPI_TX_DONE:
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