| commit | 84da15169b45f7080e4b1b32f70e68e726e02740 | |
| author | Prasad J Pandit <pjp@fedoraproject.org> | |
| Mon, 24 Oct 2016 15:26:55 +0000 (24 16:26 +0100) | ||
| committer | Peter Maydell <peter.maydell@linaro.org> | |
| Mon, 24 Oct 2016 15:26:55 +0000 (24 16:26 +0100) | ||
| tree | f491891e29e296bc46b8facb4a590ba7537b664c | treesnapshot (tar.gz zip) |
| parent | 0fa758c3a069bc59a0d903d69028971c46d1a119 | commitdiff |
timer: stm32f2xx_timer: add check for prescaler value
The STM32F2XX Timer emulator uses a 16 bit prescaler value to
limit the timer clock rate. It does that by dividing the timer
frequency. If the prescaler 's->tim_psc' was set to be UINT_MAX,
it'd lead to divide by zero error. Limit prescaler value to 16
bits to avoid it.
Reported-by: Huawei PSIRT <psirt@huawei.com>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Message-id: 1476800269-31902-1-git-send-email-ppandit@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The STM32F2XX Timer emulator uses a 16 bit prescaler value to
limit the timer clock rate. It does that by dividing the timer
frequency. If the prescaler 's->tim_psc' was set to be UINT_MAX,
it'd lead to divide by zero error. Limit prescaler value to 16
bits to avoid it.
Reported-by: Huawei PSIRT <psirt@huawei.com>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Message-id: 1476800269-31902-1-git-send-email-ppandit@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| hw/timer/stm32f2xx_timer.c | diffblobblamehistory |