lkml.org 
[lkml]   [2023]   [Jan]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v4] net: wan: Add checks for NULL for utdm in undo_uhdlc_init and unmap_si_regs
Date
If uhdlc_priv_tsa != 1 then utdm is not initialized.
And if ret != NULL then goto undo_uhdlc_init, where
utdm is dereferenced. Same if dev == NULL.

Found by Astra Linux on behalf of Linux Verification Center
(linuxtesting.org) with SVACE.

Signed-off-by: Esina Ekaterina <eesina@astralinux.ru>
---
v4: Fix style
v3: Remove braces
v2: Add check for NULL for unmap_si_regs
---
drivers/net/wan/fsl_ucc_hdlc.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wan/fsl_ucc_hdlc.c b/drivers/net/wan/fsl_ucc_hdlc.c
index 22edea6ca4b8..1c53b5546927 100644
--- a/drivers/net/wan/fsl_ucc_hdlc.c
+++ b/drivers/net/wan/fsl_ucc_hdlc.c
@@ -1243,9 +1243,11 @@ static int ucc_hdlc_probe(struct platform_device *pdev)
free_dev:
free_netdev(dev);
undo_uhdlc_init:
- iounmap(utdm->siram);
+ if (utdm)
+ iounmap(utdm->siram);
unmap_si_regs:
- iounmap(utdm->si_regs);
+ if (utdm)
+ iounmap(utdm->si_regs);
free_utdm:
if (uhdlc_priv->tsa)
kfree(utdm);
--
2.39.0
\
 
 \ /
  Last update: 2023-03-26 23:36    [W:0.050 / U:0.248 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site