Author: arybchik Date: Sat Nov 24 16:31:20 2018 New Revision: 340894 URL: https://svnweb.freebsd.org/changeset/base/340894
Log: sfxge(4): fix PreFAST static analysis warning (C6001) Fix warning "C6001: Using uninitialized memory '*sensor_maskp'" which could occur when the npages argument to efx_mcdi_sensor_info() is less than or equal to zero. Submitted by: Andrew Lee <alee at solarflare.com> Sponsored by: Solarflare Communications, Inc. MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D18128 Modified: head/sys/dev/sfxge/common/mcdi_mon.c Modified: head/sys/dev/sfxge/common/mcdi_mon.c ============================================================================== --- head/sys/dev/sfxge/common/mcdi_mon.c Sat Nov 24 16:31:08 2018 (r340893) +++ head/sys/dev/sfxge/common/mcdi_mon.c Sat Nov 24 16:31:20 2018 (r340894) @@ -399,6 +399,11 @@ efx_mcdi_sensor_info( EFSYS_ASSERT(sensor_maskp != NULL); + if (npages < 1) { + rc = EINVAL; + goto fail1; + } + for (page = 0; page < npages; page++) { uint32_t mask; @@ -415,7 +420,7 @@ efx_mcdi_sensor_info( if (req.emr_rc != 0) { rc = req.emr_rc; - goto fail1; + goto fail2; } mask = MCDI_OUT_DWORD(req, SENSOR_INFO_OUT_MASK); @@ -423,18 +428,20 @@ efx_mcdi_sensor_info( if ((page != (npages - 1)) && ((mask & (1U << MC_CMD_SENSOR_PAGE0_NEXT)) == 0)) { rc = EINVAL; - goto fail2; + goto fail3; } sensor_maskp[page] = mask; } if (sensor_maskp[npages - 1] & (1U << MC_CMD_SENSOR_PAGE0_NEXT)) { rc = EINVAL; - goto fail3; + goto fail4; } return (0); +fail4: + EFSYS_PROBE(fail4); fail3: EFSYS_PROBE(fail3); fail2: _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
