diff options
| author | Yangbo Lu <yangbo.lu@nxp.com> | 2021-07-05 16:53:06 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-07-05 10:09:29 -0700 |
| commit | 55eac20617ca84129273ab248f4d7bfe456967de (patch) | |
| tree | c6ec8dedcc5741397c2d076c4753455d180b73be | |
| parent | 6ff63a150b5556012589ae59efac1b5eeb7d32c3 (diff) | |
ptp: fix NULL pointer dereference in ptp_clock_register
Fix NULL pointer dereference in ptp_clock_register. The argument
"parent" of ptp_clock_register may be NULL pointer.
Fixes: 73f37068d540 ("ptp: support ptp physical/virtual clocks conversion")
Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/ptp/ptp_clock.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/ptp/ptp_clock.c b/drivers/ptp/ptp_clock.c index f012fa581cf4..ce6d9fc85607 100644 --- a/drivers/ptp/ptp_clock.c +++ b/drivers/ptp/ptp_clock.c @@ -236,7 +236,7 @@ struct ptp_clock *ptp_clock_register(struct ptp_clock_info *info, } /* PTP virtual clock is being registered under physical clock */ - if (parent->class && parent->class->name && + if (parent && parent->class && parent->class->name && strcmp(parent->class->name, "ptp") == 0) ptp->is_virtual_clock = true; |