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| author | Arve Hjønnevåg <arve@android.com> | 2009-01-31 07:21:09 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@kvm.kroah.org> | 2009-02-09 22:26:18 +0300 |
| commit | 5701c0519b7a357a602fda5c96f26197ecfc4c85 (patch) | |
| tree | 9cd14cf870d090c26540ea2d594e2eff1f9a78f6 | |
| parent | 07f269862a2981f1512de5393e2d0ce5b2ee8305 (diff) | |
| download | linux-5701c0519b7a357a602fda5c96f26197ecfc4c85.tar.xz | |
Staging: android: ram_console: Disable ECC when early init is enabled and validate buffer size
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/staging/android/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/staging/android/ram_console.c | 14 |
2 files changed, 15 insertions, 0 deletions
diff --git a/drivers/staging/android/Kconfig b/drivers/staging/android/Kconfig index 6b996db0dd6a..604bd1e0d546 100644 --- a/drivers/staging/android/Kconfig +++ b/drivers/staging/android/Kconfig @@ -27,6 +27,7 @@ menuconfig ANDROID_RAM_CONSOLE_ERROR_CORRECTION bool "Android RAM Console Enable error correction" default n depends on ANDROID_RAM_CONSOLE + depends on !ANDROID_RAM_CONSOLE_EARLY_INIT select REED_SOLOMON select REED_SOLOMON_ENC8 select REED_SOLOMON_DEC8 diff --git a/drivers/staging/android/ram_console.c b/drivers/staging/android/ram_console.c index bf006857a87a..643ac5ce381d 100644 --- a/drivers/staging/android/ram_console.c +++ b/drivers/staging/android/ram_console.c @@ -224,9 +224,23 @@ static int __init ram_console_init(struct ram_console_buffer *buffer, ram_console_buffer_size = buffer_size - sizeof(struct ram_console_buffer); + if (ram_console_buffer_size > buffer_size) { + pr_err("ram_console: buffer %p, invalid size %d, datasize %d\n", + buffer, buffer_size, ram_console_buffer_size); + return 0; + } + #ifdef CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION ram_console_buffer_size -= (DIV_ROUND_UP(ram_console_buffer_size, ECC_BLOCK_SIZE) + 1) * ECC_SIZE; + + if (ram_console_buffer_size > buffer_size) { + pr_err("ram_console: buffer %p, invalid size %d, " + "non-ecc datasize %d\n", + buffer, buffer_size, ram_console_buffer_size); + return 0; + } + ram_console_par_buffer = buffer->data + ram_console_buffer_size; |