Re: [PATCH v2] arm64: poe: fix stale POR_EL0 values for ptrace
From: Will Deacon <will@kernel.org>
Date: 2026-01-29 12:58:59
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stable
On Tue, 27 Jan 2026 13:39:26 +0000, Joey Gouly wrote:
If a process wrote to POR_EL0 and then crashed before a context switch happened, the coredump would contain an incorrect value for POR_EL0. The value read in poe_get() would be a stale value left in thread.por_el0. Fix this by reading the value from the system register, if the target thread is the current thread. [...]
Applied to arm64 (for-next/cpufeature), thanks!
[1/1] arm64: poe: fix stale POR_EL0 values for ptrace
https://git.kernel.org/arm64/c/1f3b950492db
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev