diff options
| author | Yang Yingliang <yangyingliang@huawei.com> | 2021-10-08 14:31:50 +0800 |
|---|---|---|
| committer | Sebastian Reichel <sebastian.reichel@collabora.com> | 2021-10-12 17:18:46 +0200 |
| commit | 1d422ecfc48ee683ae1ccc9217764f6310c0ffce (patch) | |
| tree | b5d96b30e918b0de8b0ff428e491e0f1e41a7185 /drivers/pci/probe.c | |
| parent | bf895295e9a73411889816f1a0c1f4f1a2d9c678 (diff) | |
power: supply: max17040: fix null-ptr-deref in max17040_probe()
Add check the return value of devm_regmap_init_i2c(), otherwise
later access may cause null-ptr-deref as follows:
KASAN: null-ptr-deref in range [0x0000000000000360-0x0000000000000367]
RIP: 0010:regmap_read+0x33/0x170
Call Trace:
max17040_probe+0x61b/0xff0 [max17040_battery]
? write_comp_data+0x2a/0x90
? max17040_set_property+0x1d0/0x1d0 [max17040_battery]
? tracer_hardirqs_on+0x33/0x520
? __sanitizer_cov_trace_pc+0x1d/0x50
? _raw_spin_unlock_irqrestore+0x4b/0x60
? trace_hardirqs_on+0x63/0x2d0
? write_comp_data+0x2a/0x90
? __sanitizer_cov_trace_pc+0x1d/0x50
? max17040_set_property+0x1d0/0x1d0 [max17040_battery]
i2c_device_probe+0xa31/0xbe0
Fixes: 6455a8a84bdf ("power: supply: max17040: Use regmap i2c")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Diffstat (limited to 'drivers/pci/probe.c')
0 files changed, 0 insertions, 0 deletions