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DLPX-84907 CVE-2022-3628 #29

Merged
merged 1 commit into from
Mar 1, 2023
Merged

DLPX-84907 CVE-2022-3628 #29

merged 1 commit into from
Mar 1, 2023

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@prakashsurya prakashsurya force-pushed the dlpx/pr/prakashsurya/5bc52641-0937-49c4-a74b-bc4b52fe26f4 branch 2 times, most recently from aceb62f to 72497ae Compare February 28, 2023 19:39
sebroy
sebroy reviewed Feb 28, 2023
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@prakashsurya prakashsurya force-pushed the dlpx/pr/prakashsurya/5bc52641-0937-49c4-a74b-bc4b52fe26f4 branch from 72497ae to a4cb333 Compare February 28, 2023 20:07
@prakashsurya prakashsurya marked this pull request as ready for review March 1, 2023 17:01
@prakashsurya prakashsurya enabled auto-merge (squash) March 1, 2023 17:03
@prakashsurya prakashsurya merged commit e5dd7f7 into 6.0/stage Mar 1, 2023
@prakashsurya prakashsurya deleted the dlpx/pr/prakashsurya/5bc52641-0937-49c4-a74b-bc4b52fe26f4 branch March 1, 2023 17:08
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@pchelkin91 @roxanan1996
dma-mapping: benchmark: handle NUMA_NO_NODE correctly
6c2825e 
BugLink: https://bugs.launchpad.net/bugs/2072617

[ Upstream commit e64746e74f717961250a155e14c156616fcd981f ]

cpumask_of_node() can be called for NUMA_NO_NODE inside do_map_benchmark()
resulting in the following sanitizer report:

UBSAN: array-index-out-of-bounds in ./arch/x86/include/asm/topology.h:72:28
index -1 is out of range for type 'cpumask [64][1]'
CPU: 1 PID: 990 Comm: dma_map_benchma Not tainted 6.9.0-rc6 #29
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996)
Call Trace:
 <TASK>
dump_stack_lvl (lib/dump_stack.c:117)
ubsan_epilogue (lib/ubsan.c:232)
__ubsan_handle_out_of_bounds (lib/ubsan.c:429)
cpumask_of_node (arch/x86/include/asm/topology.h:72) [inline]
do_map_benchmark (kernel/dma/map_benchmark.c:104)
map_benchmark_ioctl (kernel/dma/map_benchmark.c:246)
full_proxy_unlocked_ioctl (fs/debugfs/file.c:333)
__x64_sys_ioctl (fs/ioctl.c:890)
do_syscall_64 (arch/x86/entry/common.c:83)
entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)

Use cpumask_of_node() in place when binding a kernel thread to a cpuset
of a particular node.

Note that the provided node id is checked inside map_benchmark_ioctl().
It's just a NUMA_NO_NODE case which is not handled properly later.

Found by Linux Verification Center (linuxtesting.org).

Fixes: 65789da ("dma-mapping: add benchmark support for streaming DMA APIs")
Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
Acked-by: Barry Song <baohua@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Portia Stephens <portia.stephens@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
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@prakashsurya
DLPX-84907 CVE-2022-3628 (#29)
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