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net: wan: Add checks for NULL for utdm in undo_uhdlc_init and unmap_si_regs
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.
Fixes: 8d68100ab4
("soc/fsl/qe: fix err handling of ucc_of_parse_tdm")
Signed-off-by: Esina Ekaterina <eesina@astralinux.ru>
Link: https://lore.kernel.org/r/20230112074703.13558-1-eesina@astralinux.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
parent
4bb4db7f31
commit
488e0bf7f3
@ -1243,9 +1243,11 @@ static int ucc_hdlc_probe(struct platform_device *pdev)
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free_dev:
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free_dev:
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free_netdev(dev);
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free_netdev(dev);
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undo_uhdlc_init:
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undo_uhdlc_init:
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iounmap(utdm->siram);
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if (utdm)
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iounmap(utdm->siram);
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unmap_si_regs:
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unmap_si_regs:
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iounmap(utdm->si_regs);
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if (utdm)
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iounmap(utdm->si_regs);
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free_utdm:
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free_utdm:
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if (uhdlc_priv->tsa)
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if (uhdlc_priv->tsa)
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kfree(utdm);
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kfree(utdm);
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