CVE-2024-42290

irqchip/imx-irqsteer: Handle runtime power management correctly

State: Published
Severity: Not scored
Published: Aug 17, 2024
Updated: May 11, 2026
Reserved: Jul 30, 2024

Description

In the Linux kernel, the following vulnerability has been resolved:

irqchip/imx-irqsteer: Handle runtime power management correctly

The power domain is automatically activated from clk_prepare(). However, on certain platforms like i.MX8QM and i.MX8QXP, the power-on handling invokes sleeping functions, which triggers the 'scheduling while atomic' bug in the context switch path during device probing:

BUG: scheduling while atomic: kworker/u13:1/48/0x00000002 Call trace: __schedule_bug+0x54/0x6c __schedule+0x7f0/0xa94 schedule+0x5c/0xc4 schedule_preempt_disabled+0x24/0x40 __mutex_lock.constprop.0+0x2c0/0x540 __mutex_lock_slowpath+0x14/0x20 mutex_lock+0x48/0x54 clk_prepare_lock+0x44/0xa0 clk_prepare+0x20/0x44 imx_irqsteer_resume+0x28/0xe0 pm_generic_runtime_resume+0x2c/0x44 __genpd_runtime_resume+0x30/0x80 genpd_runtime_resume+0xc8/0x2c0 __rpm_callback+0x48/0x1d8 rpm_callback+0x6c/0x78 rpm_resume+0x490/0x6b4 __pm_runtime_resume+0x50/0x94 irq_chip_pm_get+0x2c/0xa0 __irq_do_set_handler+0x178/0x24c irq_set_chained_handler_and_data+0x60/0xa4 mxc_gpio_probe+0x160/0x4b0

Cure this by implementing the irq_bus_lock/sync_unlock() interrupt chip callbacks and handle power management in them as they are invoked from non-atomic context.

[ tglx: Rewrote change log, added Fixes tag ]

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	0136afa08967f6e160b9b4e85a7a70e4180a8333 to before a590e8dea3df2639921f874d763be961dd74e8f9Affected 0136afa08967f6e160b9b4e85a7a70e4180a8333 to before 3a2884a44e5cda192df1b28e9925661f79f599a1Affected 0136afa08967f6e160b9b4e85a7a70e4180a8333 to before fa1803401e1c360efe6342fb41d161cc51748a11Affected 0136afa08967f6e160b9b4e85a7a70e4180a8333 to before 58c56735facb225a5c46fa4b8bbbe7f31d1cb894Affected 0136afa08967f6e160b9b4e85a7a70e4180a8333 to before 21bd3f9e7f924cd2fc892a484e7a50c7e1847565Affected 0136afa08967f6e160b9b4e85a7a70e4180a8333 to before f8ae38f1dfe652779c7c613facbc257cec00ac44Affected 0136afa08967f6e160b9b4e85a7a70e4180a8333 to before 33b1c47d1fc0b5f06a393bb915db85baacba18eaAffected
LinuxLinux	5.0Affected before 5.0Not affected 5.4.282 through 5.4.Not affected 5.10.224 through 5.10.Not affected 5.15.165 through 5.15.Not affected 6.1.103 through 6.1.Not affected 6.6.44 through 6.6.Not affected 6.10.3 through 6.10.Not affected 6.11 and laterNot affected

Product

Versions

LinuxLinux

0136afa08967f6e160b9b4e85a7a70e4180a8333 to before a590e8dea3df2639921f874d763be961dd74e8f9Affected
0136afa08967f6e160b9b4e85a7a70e4180a8333 to before 3a2884a44e5cda192df1b28e9925661f79f599a1Affected
0136afa08967f6e160b9b4e85a7a70e4180a8333 to before fa1803401e1c360efe6342fb41d161cc51748a11Affected
0136afa08967f6e160b9b4e85a7a70e4180a8333 to before 58c56735facb225a5c46fa4b8bbbe7f31d1cb894Affected
0136afa08967f6e160b9b4e85a7a70e4180a8333 to before 21bd3f9e7f924cd2fc892a484e7a50c7e1847565Affected
0136afa08967f6e160b9b4e85a7a70e4180a8333 to before f8ae38f1dfe652779c7c613facbc257cec00ac44Affected
0136afa08967f6e160b9b4e85a7a70e4180a8333 to before 33b1c47d1fc0b5f06a393bb915db85baacba18eaAffected

LinuxLinux

5.0Affected
before 5.0Not affected
5.4.282 through 5.4.*Not affected
5.10.224 through 5.10.*Not affected
5.15.165 through 5.15.*Not affected
6.1.103 through 6.1.*Not affected
6.6.44 through 6.6.*Not affected
6.10.3 through 6.10.*Not affected
6.11 and laterNot affected

References

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