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 ]
Vendor | Product | Version | CPE |
---|---|---|---|
linux | linux_kernel | * | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
[
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/irqchip/irq-imx-irqsteer.c"
],
"versions": [
{
"version": "0136afa08967",
"lessThan": "a590e8dea3df",
"status": "affected",
"versionType": "git"
},
{
"version": "0136afa08967",
"lessThan": "3a2884a44e5c",
"status": "affected",
"versionType": "git"
},
{
"version": "0136afa08967",
"lessThan": "fa1803401e1c",
"status": "affected",
"versionType": "git"
},
{
"version": "0136afa08967",
"lessThan": "58c56735facb",
"status": "affected",
"versionType": "git"
},
{
"version": "0136afa08967",
"lessThan": "21bd3f9e7f92",
"status": "affected",
"versionType": "git"
},
{
"version": "0136afa08967",
"lessThan": "f8ae38f1dfe6",
"status": "affected",
"versionType": "git"
},
{
"version": "0136afa08967",
"lessThan": "33b1c47d1fc0",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/irqchip/irq-imx-irqsteer.c"
],
"versions": [
{
"version": "5.0",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.0",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.4.282",
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.10.224",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.15.165",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.1.103",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.6.44",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.10.3",
"lessThanOrEqual": "6.10.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.11",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
]
git.kernel.org/stable/c/21bd3f9e7f924cd2fc892a484e7a50c7e1847565
git.kernel.org/stable/c/33b1c47d1fc0b5f06a393bb915db85baacba18ea
git.kernel.org/stable/c/3a2884a44e5cda192df1b28e9925661f79f599a1
git.kernel.org/stable/c/58c56735facb225a5c46fa4b8bbbe7f31d1cb894
git.kernel.org/stable/c/a590e8dea3df2639921f874d763be961dd74e8f9
git.kernel.org/stable/c/f8ae38f1dfe652779c7c613facbc257cec00ac44
git.kernel.org/stable/c/fa1803401e1c360efe6342fb41d161cc51748a11