Re: [PATCH v2] arm64: vdso: Fix ABI regression in compat vdso
From: John Stultz <hidden>
Date: 2019-07-10 15:44:58
Also in:
linux-arch, linux-kselftest, linux-mips, lkml
On Wed, Jul 10, 2019 at 7:01 AM Vincenzo Frascino [off-list ref] wrote:
Prior to the introduction of Unified vDSO support and compat layer for vDSO on arm64, AT_SYSINFO_EHDR was not defined for compat tasks. In the current implementation, AT_SYSINFO_EHDR is defined even if the compat vdso layer is not built and this causes a regression in the expected behavior of the ABI. Restore the ABI behavior making sure that AT_SYSINFO_EHDR for compat tasks is defined only when CONFIG_COMPAT_VDSO is enabled. Reported-by: John Stultz <redacted> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
This seems to solve it for me! Thanks so much for the quick turnaround on a fix. I really appreciate it! Tested-by: John Stultz <redacted> thanks -john _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel