摘要:
In the Linux kernel, the following vulnerability has been resolved:i2c: tegra: Do not mark ACPI devices as irq safeOn ACPI machines, the tegra i2c module encounters an issue due to amutex being called inside a spinlock. This leads to the following bug: BUG: sleeping function called from invalid context at kernel/locking/mutex.c:585 ... Call trace: __might_sleep __mutex_lock_common mutex_lock_nested acpi_subsys_runtime_resume rpm_resume tegra_i2c_xferThe problem arises because during __pm_runtime_resume(), the spinlock&dev->power.lock is acquired before rpm_resume() is called. Later,rpm_resume() invokes acpi_subsys_runtime_resume(), which relies onmutexes, triggering the error.To address this issue, devices on ACPI are now marked as not IRQ-safe,considering the dependency of acpi_subsys_runtime_resume() on mutexes.
安全等级: Low
公告ID: KylinSec-SA-2024-3895
发布日期: 2024年10月12日
关联CVE: CVE-2024-45029
In the Linux kernel, the following vulnerability has been resolved:i2c: tegra: Do not mark ACPI devices as irq safeOn ACPI machines, the tegra i2c module encounters an issue due to amutex being called inside a spinlock. This leads to the following bug: BUG: sleeping function called from invalid context at kernel/locking/mutex.c:585 ... Call trace: __might_sleep __mutex_lock_common mutex_lock_nested acpi_subsys_runtime_resume rpm_resume tegra_i2c_xferThe problem arises because during __pm_runtime_resume(), the spinlock&dev->power.lock is acquired before rpm_resume() is called. Later,rpm_resume() invokes acpi_subsys_runtime_resume(), which relies onmutexes, triggering the error.To address this issue, devices on ACPI are now marked as not IRQ-safe,considering the dependency of acpi_subsys_runtime_resume() on mutexes.
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