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authorAlexandre Ghiti <alexghiti@rivosinc.com>2024-09-17 18:03:28 +0300
committerPalmer Dabbelt <palmer@rivosinc.com>2024-10-01 23:08:11 +0300
commitcfb10de18538e383dbc4f3ce7f477ce49287ff3d (patch)
tree3ea0cffff996f84aaa0af066035102b9665fb344 /lib/string_helpers.c
parentc625154993d0d24a962b1830cd5ed92adda2cf86 (diff)
downloadlinux-cfb10de18538e383dbc4f3ce7f477ce49287ff3d.tar.xz
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: a7555f6b62e7 ("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>
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