net: cadence: macb: Fix a possible deadlock in macb_halt_tx.
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In the Linux kernel, the following vulnerability has been resolved:
net: cadence: macb: Fix a possible deadlock in macb_halt_tx.
There is a situation where after THALT is set high, TGO stays high as
well. Because jiffies are never updated, as we are in a context with
interrupts disabled, we never exit that loop and have a deadlock.
That deadlock was noticed on a sama5d4 device that stayed locked for days.
Use retries instead of jiffies so that the timeout really works and we do
not have a deadlock anymore.
Produtos afetados
Linux · LinuxReferências
https://git.kernel.org/stable/c/0772a608d799ac0d127c0a36047a2725777aba9dhttps://git.kernel.org/stable/c/1d60c0781c1bbeaa1196b0d8aad5c435f06cb7c4https://git.kernel.org/stable/c/3e64d35475aa21d13dab71da51de51923c1a3a48https://git.kernel.org/stable/c/64675a9c00443b2e8af42af08c38fc1b78b68ba2https://git.kernel.org/stable/c/84f98955a9de0e0f591df85aa1a44f3ebcf1cb37https://git.kernel.org/stable/c/aace6b63892ce8307e502a60fe2f5a4bc6e1cfe7https://git.kernel.org/stable/c/c92d6089d8ad7d4d815ebcedee3f3907b539ff1fhttps://lists.debian.org/debian-lts-announce/2025/08/msg00010.htmlhttps://lists.debian.org/debian-lts-announce/2025/10/msg00007.html