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| author | Joel Stanley <joel@jms.id.au> | 2021-08-19 16:22:00 +0930 |
|---|---|---|
| committer | Joel Stanley <joel@jms.id.au> | 2021-08-19 16:32:20 +0930 |
| commit | 66a68b0be4ffef6a30d6b40ac1da87d6eaa8cbbf (patch) | |
| tree | b8c2357d5f18c4908d2eb2312219db2fe17f083c /arch/arm/configs | |
| parent | 2734d6c1b1a089fb593ef6a23d4b70903526fe0c (diff) | |
| download | linux-stable-66a68b0be4ffef6a30d6b40ac1da87d6eaa8cbbf.tar.gz linux-stable-66a68b0be4ffef6a30d6b40ac1da87d6eaa8cbbf.tar.bz2 linux-stable-66a68b0be4ffef6a30d6b40ac1da87d6eaa8cbbf.zip | |
ARM: config: aspeed: Enable hardened allocator feature
SLAB_FREELIST_HARDENED can protect from freelist overwrite attacks with
really small overhead.
It works best with the SLUB allocator, so make SLUB the default by
removing SLAB=y.
total used free shared buff/cache available
SLAB 425596 44065.3+/-220 311099+/-3800 14864+/-3900 70432+/-3700 352767+/-3900
SLUB 425592 44225.3+/-280 313275+/-600 12132+/-3.3 68092+/-530 355295+/-280
These figures are the average memory usage from three boots of each
option in qemu, running the Romulus userspace. The output is from
free(1), reported in kilobytes.
Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Link: https://lore.kernel.org/r/20210819065203.2620911-2-joel@jms.id.au
Signed-off-by: Joel Stanley <joel@jms.id.au>
Diffstat (limited to 'arch/arm/configs')
| -rw-r--r-- | arch/arm/configs/aspeed_g4_defconfig | 2 | ||||
| -rw-r--r-- | arch/arm/configs/aspeed_g5_defconfig | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/configs/aspeed_g4_defconfig b/arch/arm/configs/aspeed_g4_defconfig index a3ee647b1ebb..397c57e94743 100644 --- a/arch/arm/configs/aspeed_g4_defconfig +++ b/arch/arm/configs/aspeed_g4_defconfig @@ -18,8 +18,8 @@ CONFIG_BPF_SYSCALL=y CONFIG_EMBEDDED=y CONFIG_PERF_EVENTS=y # CONFIG_COMPAT_BRK is not set -CONFIG_SLAB=y CONFIG_SLAB_FREELIST_RANDOM=y +CONFIG_SLAB_FREELIST_HARDENED=y # CONFIG_ARCH_MULTI_V7 is not set CONFIG_ARCH_ASPEED=y CONFIG_MACH_ASPEED_G4=y diff --git a/arch/arm/configs/aspeed_g5_defconfig b/arch/arm/configs/aspeed_g5_defconfig index 2db48438c5d2..3f81146a9c0e 100644 --- a/arch/arm/configs/aspeed_g5_defconfig +++ b/arch/arm/configs/aspeed_g5_defconfig @@ -18,8 +18,8 @@ CONFIG_BPF_SYSCALL=y CONFIG_EMBEDDED=y CONFIG_PERF_EVENTS=y # CONFIG_COMPAT_BRK is not set -CONFIG_SLAB=y CONFIG_SLAB_FREELIST_RANDOM=y +CONFIG_SLAB_FREELIST_HARDENED=y CONFIG_ARCH_MULTI_V6=y CONFIG_ARCH_ASPEED=y CONFIG_MACH_ASPEED_G5=y |