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Alexandre Ghiti cfb10de185
riscv: Fix kernel stack size when KASAN is enabled 
We use Kconfig to select the kernel stack size, doubling the default
size if KASAN is enabled.

But that actually only works if KASAN is selected from the beginning,
meaning that if KASAN config is added later (for example using
menuconfig), CONFIG_THREAD_SIZE_ORDER won't be updated, keeping the
default size, which is not enough for KASAN as reported in [1].

So fix this by moving the logic to compute the right kernel stack into a
header.

Fixes: a7555f6b62 ("riscv: stack: Add config of thread stack size")
Reported-by: syzbot+ba9eac24453387a9d502@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/all/000000000000eb301906222aadc2@google.com/ [1]
Cc: stable@vger.kernel.org
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20240917150328.59831-1-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-10-01 13:08:11 -07:00
..
boot Many singleton patches - please see the various changelogs for details. 2024-09-21 08:20:50 -07:00
configs RISC-V Patches for the 6.12 Merge Window, Part 1 2024-09-24 10:59:17 -07:00
crypto
errata riscv: errata: sifive: Use SYM_*() assembly macros 2024-09-15 00:03:22 -07:00
include riscv: Fix kernel stack size when KASAN is enabled 2024-10-01 13:08:11 -07:00
kernel RISC-V Patches for the 6.12 Merge Window, Part 1 2024-09-24 10:59:17 -07:00
kvm Merge branch 'kvm-redo-enable-virt' into HEAD 2024-09-17 11:38:20 -04:00
lib Merge patch series "riscv: Improve KASAN coverage to fix unit tests" 2024-09-19 01:10:44 -07:00
mm RISC-V Patches for the 6.12 Merge Window, Part 1 2024-09-24 10:59:17 -07:00
net RISC-V Patches for the 6.11 Merge Window, Part 1 2024-07-20 09:11:27 -07:00
purgatory Merge patch series "riscv: Improve KASAN coverage to fix unit tests" 2024-09-19 01:10:44 -07:00
tools
Kbuild
Kconfig riscv: Fix kernel stack size when KASAN is enabled 2024-10-01 13:08:11 -07:00
Kconfig.debug
Kconfig.errata
Kconfig.socs
Kconfig.vendor riscv: Extend cpufeature.c to detect vendor extensions 2024-07-22 15:36:54 -07:00
Makefile riscv: boot: add Image.xz support 2024-09-01 20:43:27 -07:00
Makefile.postlink