[RTEMS Project] #4252: grtc.c: Dereference before null check error spotted by Coverity
RTEMS trac
trac at rtems.org
Tue Feb 16 20:50:40 UTC 2021
#4252: grtc.c: Dereference before null check error spotted by Coverity
------------------------+--------------------
Reporter: Ryan Long | Owner: (none)
Type: defect | Status: new
Priority: normal | Milestone: 6.1
Component: bsps | Version: 6
Severity: normal | Keywords:
Blocked By: | Blocking:
------------------------+--------------------
CID 1399840: Dereference before null check in grtc_ioctl().
{{{
1534 rtems_libio_ioctl_args_t *ioarg = (rtems_libio_ioctl_args_t
*)arg;
deref_ptr: Directly dereferencing pointer ioarg.
1535 unsigned int *data = ioarg->buffer;
1536 int status,frm_len,i,ret;
1537 struct grtc_ioc_buf_params *buf_arg;
1538 struct grtc_ioc_config *cfg;
1539 struct grtc_ioc_hw_status *hwregs;
1540 struct grtc_ioc_pools_setup *pocfg;
1541 struct grtc_ioc_assign_frm_pool *poassign;
1542 struct grtc_frame *frm, *frms;
1543 struct grtc_frame_pool *pool;
1544 struct grtc_list *frmlist;
1545 struct grtc_ioc_stats *stats;
1546 unsigned int mem;
1547 IRQ_LOCAL_DECLARE(oldLevel);
1548
1549 FUNCDBG();
1550
1551 if ( drvmgr_get_dev(&grtc_drv_info.general, minor, &dev) ) {
1552 return RTEMS_INVALID_NUMBER;
1553 }
1554 pDev = (struct grtc_priv *)dev->priv;
1555
CID 1399840 (#1 of 1): Dereference before null check
(REVERSE_INULL)check_after_deref: Null-checking ioarg suggests that it may
be null, but it has already been dereferenced on all paths leading to the
check.
1556 if (!ioarg)
}}}
--
Ticket URL: <http://devel.rtems.org/ticket/4252>
RTEMS Project <http://www.rtems.org/>
RTEMS Project
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