x86/um/vdso: Panic when vDSO can not be allocated

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The vDSO address is added to the userspace auxiliary vectors even if the
vDSO was not allocated. When accessing the page, userspace processes
will crash.

Enforce that the allocation works.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://patch.msgid.link/20251013-uml-vdso-cleanup-v1-3-a079c7adcc69@weissschuh.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

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Thomas Weißschuh 2025-10-13 12:40:20 +02:00 • committed by Johannes Berg

parent 8c0fbd6ae4

commit 12fe820fae

1 changed files with 1 additions and 11 deletions

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12

arch/x86/um/vdso/vma.c

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