linux-stable/drivers/xen
Masahiro Yamada dbac14a5a0 xen: unexport __init-annotated xen_xlate_map_ballooned_pages()
EXPORT_SYMBOL and __init is a bad combination because the .init.text
section is freed up after the initialization. Hence, modules cannot
use symbols annotated __init. The access to a freed symbol may end up
with kernel panic.

modpost used to detect it, but it has been broken for a decade.

Recently, I fixed modpost so it started to warn it again, then this
showed up in linux-next builds.

There are two ways to fix it:

  - Remove __init
  - Remove EXPORT_SYMBOL

I chose the latter for this case because none of the in-tree call-sites
(arch/arm/xen/enlighten.c, arch/x86/xen/grant-table.c) is compiled as
modular.

Fixes: 243848fc01 ("xen/grant-table: Move xlated_setup_gnttab_pages to common place")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>
Link: https://lore.kernel.org/r/20220606045920.4161881-1-masahiroy@kernel.org
Signed-off-by: Juergen Gross <jgross@suse.com>
2022-06-07 08:11:35 +02:00
..
events xen/console: harden hvc_xen against event channel storms 2021-12-16 08:24:08 +01:00
xen-pciback xen-pciback: allow compiling on other archs than x86 2021-11-02 08:03:43 -05:00
xenbus xen: replace xen_remap() with memremap() 2022-06-01 07:24:17 +02:00
xenfs
acpi.c
arm-device.c
balloon.c xen/balloon: don't use PV mode extra memory for zone device allocations 2022-04-07 15:08:37 -05:00
biomerge.c
cpu_hotplug.c xen/cpuhotplug: Fix initial CPU offlining for PV(H) guests 2020-05-21 13:01:45 -05:00
dbgp.c
efi.c
evtchn.c xen/evtchn: use READ/WRITE_ONCE() for accessing ring indices 2021-02-23 10:07:52 -06:00
features.c xen: check required Xen features 2021-08-30 11:57:45 +02:00
gntalloc.c xen: switch gnttab_end_foreign_access() to take a struct page pointer 2022-05-27 11:05:29 +02:00
gntdev-common.h xen: Use evtchn_type_t as a type for event channels 2020-04-07 12:12:54 +02:00
gntdev-dmabuf.c xen: switch gnttab_end_foreign_access() to take a struct page pointer 2022-05-27 11:05:29 +02:00
gntdev-dmabuf.h
gntdev.c xen/gntdev: fix unmap notification order 2022-01-06 08:52:22 +01:00
grant-dma-iommu.c xen/grant-dma-iommu: Introduce stub IOMMU driver 2022-06-06 16:07:30 +02:00
grant-dma-ops.c xen/grant-dma-ops: Retrieve the ID of backend's domain for DT devices 2022-06-06 16:07:30 +02:00
grant-table.c xen/grants: support allocating consecutive grants 2022-06-06 08:54:35 +02:00
Kconfig xen/grant-dma-ops: Retrieve the ID of backend's domain for DT devices 2022-06-06 16:07:30 +02:00
Makefile xen/grant-dma-iommu: Introduce stub IOMMU driver 2022-06-06 16:07:30 +02:00
manage.c xen: don't hang when resuming PCI device 2022-03-25 14:22:15 -05:00
mcelog.c
mem-reservation.c x86/xen: remove 32-bit pv leftovers 2021-11-02 08:03:43 -05:00
pci.c xen/pci: Make use of the helper macro LIST_HEAD() 2022-02-10 11:10:23 +01:00
pcpu.c xen: Use DEVICE_ATTR_*() macro 2021-07-05 09:23:31 +02:00
platform-pci.c xen: Set platform PCI device INTX affinity to CPU0 2021-01-13 16:12:03 +01:00
privcmd-buf.c
privcmd.c xen/privcmd: drop "pages" parameter from xen_remap_pfn() 2021-10-05 08:20:27 +02:00
privcmd.h
pvcalls-back.c xen/pvcalls-back: Remove redundant 'flush_workqueue()' calls 2021-11-02 07:45:44 -05:00
pvcalls-front.c xen: switch gnttab_end_foreign_access() to take a struct page pointer 2022-05-27 11:05:29 +02:00
pvcalls-front.h
swiotlb-xen.c swiotlb-xen: fix DMA_ATTR_NO_KERNEL_MAPPING on arm 2022-05-11 19:48:32 +02:00
sys-hypervisor.c drivers/xen: use helper macro __ATTR_RW 2022-03-10 09:27:55 -06:00
time.c x86/paravirt: Switch time pvops functions to use static_call() 2021-03-11 16:17:52 +01:00
unpopulated-alloc.c xen/balloon: don't use PV mode extra memory for zone device allocations 2022-04-07 15:08:37 -05:00
xen-acpi-pad.c
xen-acpi-processor.c xen: Fix implicit type conversion 2021-11-02 07:45:44 -05:00
xen-balloon.c xen: Use DEVICE_ATTR_*() macro 2021-07-05 09:23:31 +02:00
xen-front-pgdir-shbuf.c xen: switch gnttab_end_foreign_access() to take a struct page pointer 2022-05-27 11:05:29 +02:00
xen-scsiback.c xen/scsiback: use new command result macros 2022-05-19 14:02:43 +02:00
xlate_mmu.c xen: unexport __init-annotated xen_xlate_map_ballooned_pages() 2022-06-07 08:11:35 +02:00