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| author | Robert Jarzmik <rjarzmik@free.fr> | 2008-05-02 21:17:06 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-05-04 11:06:05 +0100 |
| commit | 649de51b883746d76c5fa1614dd067054c9d702a (patch) | |
| tree | 68c3b172063bdf4cc82a727d3d4ca48f63487665 /arch/arm/mach-pxa/pm.c | |
| parent | c8df9a53e8d16877fc0b268b002af2a47a14643a (diff) | |
| download | linux-rpi3-649de51b883746d76c5fa1614dd067054c9d702a.tar.gz linux-rpi3-649de51b883746d76c5fa1614dd067054c9d702a.tar.bz2 linux-rpi3-649de51b883746d76c5fa1614dd067054c9d702a.zip | |
[ARM] 5027/1: Fixed random memory corruption on pxa suspend cycle.
Each time a pxa type cpu went in suspend, a portion of
kmalloc memory was corrupted.
The issue was an incorrect length allocation introduced by
the commit 711be5ccfe9a02ba560aa918a008c31ea4760163 for
the save registers array (=> overflow).
Signed-off-by: Robert Jarzmik <rjarzmik@free.fr>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-pxa/pm.c')
| -rw-r--r-- | arch/arm/mach-pxa/pm.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/arm/mach-pxa/pm.c b/arch/arm/mach-pxa/pm.c index ec1bbf333a3a..329df2152dcd 100644 --- a/arch/arm/mach-pxa/pm.c +++ b/arch/arm/mach-pxa/pm.c @@ -42,7 +42,7 @@ int pxa_pm_enter(suspend_state_t state) if (state != PM_SUSPEND_STANDBY) { pxa_cpu_pm_fns->save(sleep_save); /* before sleeping, calculate and save a checksum */ - for (i = 0; i < pxa_cpu_pm_fns->save_size - 1; i++) + for (i = 0; i < pxa_cpu_pm_fns->save_count - 1; i++) sleep_save_checksum += sleep_save[i]; } @@ -55,7 +55,7 @@ int pxa_pm_enter(suspend_state_t state) if (state != PM_SUSPEND_STANDBY) { /* after sleeping, validate the checksum */ - for (i = 0; i < pxa_cpu_pm_fns->save_size - 1; i++) + for (i = 0; i < pxa_cpu_pm_fns->save_count - 1; i++) checksum += sleep_save[i]; /* if invalid, display message and wait for a hardware reset */ @@ -101,7 +101,8 @@ static int __init pxa_pm_init(void) return -EINVAL; } - sleep_save = kmalloc(pxa_cpu_pm_fns->save_size, GFP_KERNEL); + sleep_save = kmalloc(pxa_cpu_pm_fns->save_count * sizeof(unsigned long), + GFP_KERNEL); if (!sleep_save) { printk(KERN_ERR "failed to alloc memory for pm save\n"); return -ENOMEM; |