* [bug report] MIPS: add support for SGI Octane (IP30)
@ 2020-01-22 10:03 Dan Carpenter
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From: Dan Carpenter @ 2020-01-22 10:03 UTC (permalink / raw)
To: tbogendoerfer; +Cc: linux-mips
Hello Thomas Bogendoerfer,
This is a semi-automatic email about new static checker warnings.
The patch 7505576d1c1a: "MIPS: add support for SGI Octane (IP30)"
from Oct 24, 2019, leads to the following Smatch complaint:
./arch/mips/sgi-ip30/ip30-irq.c:236 heart_domain_free()
warn: variable dereferenced before check 'irqd' (see line 235)
./arch/mips/sgi-ip30/ip30-irq.c
234 irqd = irq_domain_get_irq_data(domain, virq);
235 clear_bit(irqd->hwirq, heart_irq_map);
^^^^^^^^^^^
Dereference
236 if (irqd && irqd->chip_data)
^^^^
Check too late.
237 kfree(irqd->chip_data);
238 }
regards,
dan carpenter
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