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dma: Let st*_dma() propagate MemTxResult (bsc#1193914, CVE-2021-3611)

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dma_memory_write() returns a MemTxResult type. Do not discard
it, return it to the caller.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211223115554.3155328-18-philmd@redhat.com>
(cherry picked from commit 24aed6bcb6)
References: bsc#1193914
References: CVE-2021-3611
Signed-off-by: Dario Faggioli <dfaggioli@suse.com>
This commit is contained in:
Philippe Mathieu-Daudé
2021-12-17 23:56:14 +01:00
committed by Dario Faggioli
parent 7cd37228bc
commit e28c057c97
1 changed files with 10 additions and 10 deletions
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8
include/sysemu/dma.h
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@@ -248,13 +248,13 @@ static inline void dma_memory_unmap(AddressSpace *as,
dma_memory_read(as, addr, &val, (_bits) / 8, attrs); \
return _end##_bits##_to_cpu(val); \
} \
static inline void st##_sname##_##_end##_dma(AddressSpace *as, \
static inline MemTxResult st##_sname##_##_end##_dma(AddressSpace *as, \
dma_addr_t addr, \
uint##_bits##_t val, \
MemTxAttrs attrs) \
{ \
val = cpu_to_##_end##_bits(val); \
dma_memory_write(as, addr, &val, (_bits) / 8, attrs); \
return dma_memory_write(as, addr, &val, (_bits) / 8, attrs); \
}
static inline uint8_t ldub_dma(AddressSpace *as, dma_addr_t addr, MemTxAttrs attrs)
@@ -265,10 +265,10 @@ static inline uint8_t ldub_dma(AddressSpace *as, dma_addr_t addr, MemTxAttrs att
return val;
}
static inline void stb_dma(AddressSpace *as, dma_addr_t addr,
static inline MemTxResult stb_dma(AddressSpace *as, dma_addr_t addr,
uint8_t val, MemTxAttrs attrs)
{
dma_memory_write(as, addr, &val, 1, attrs);
return dma_memory_write(as, addr, &val, 1, attrs);
}
DEFINE_LDST_DMA(uw, w, 16, le);