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Harshit Mogalapalli 4da411086f xen/privcmd: Fix a possible warning in privcmd_ioctl_mmap_resource() 
[ Upstream commit 8b997b2bb2c53b76a6db6c195930e9ab8e4b0c79 ]

As 'kdata.num' is user-controlled data, if user tries to allocate
memory larger than(>=) MAX_ORDER, then kcalloc() will fail, it
creates a stack trace and messes up dmesg with a warning.

Call trace:
-> privcmd_ioctl
--> privcmd_ioctl_mmap_resource

Add __GFP_NOWARN in order to avoid too large allocation warning.
This is detected by static analysis using smatch.

Fixes: 3ad0876554ca ("xen/privcmd: add IOCTL_PRIVCMD_MMAP_RESOURCE")
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20221126050745.778967-1-harshit.m.mogalapalli@oracle.com
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-12-31 13:31:59 +01:00
..
events
xen: branch for v6.0-rc1b
2022-08-14 09:28:54 -07:00
xen-pciback
xen-pciback: Allow setting PCI_MSIX_FLAGS_MASKALL too
2022-11-14 13:29:10 +01:00
xenbus
xen: branch for v6.0-rc7
2022-09-23 08:31:24 -07:00
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
…
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
x86/xen: Remove undefined behavior in setup_features()
2022-06-21 16:36:11 +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/gntdev: Accommodate VMA splitting
2022-10-06 10:40:21 +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: Accommodate VMA splitting
2022-10-06 10:40:21 +02:00
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/virtio: Convert PAGE_SIZE/PAGE_SHIFT/PFN_UP to Xen counterparts
2022-10-14 14:22:23 +02:00
grant-table.c
xen/grants: prevent integer overflow in gnttab_dma_alloc_pages()
2022-09-02 11:05:19 +02:00
Kconfig
xen: Kconfig: Fix spelling mistake "Maxmium" -> "Maximum"
2022-10-12 08:39:50 +02:00
Makefile
xen/grant-dma-iommu: Introduce stub IOMMU driver
2022-06-06 16:07:30 +02:00
manage.c
xen/manage: Use orderly_reboot() to reboot
2022-08-01 07:42:22 +02:00
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/pcpu: fix possible memory leak in register_pcpu()
2022-11-14 13:29:07 +01:00
platform-pci.c
xen/platform-pci: use define instead of literal number
2022-11-15 07:34:13 +01:00
privcmd-buf.c
…
privcmd.c
xen/privcmd: Fix a possible warning in privcmd_ioctl_mmap_resource()
2022-12-31 13:31:59 +01:00
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: Fix spelling mistake
2022-08-01 07:42:42 +02:00
xen-scsiback.c
SCSI misc on 20221007
2022-10-07 12:33:18 -07:00
xlate_mmu.c
xen: unexport __init-annotated xen_xlate_map_ballooned_pages()
2022-06-07 08:11:35 +02:00