[PATCH] include: sbi_platform: Increase default stack size
Vivian Wang <[email protected]>
| Newsgroups | org.infradead.lists.opensbi |
|---|---|
| Message-ID | <[email protected]> |
sbi_misaligned_v_ld_emulator() has a local buffer (namely mask) which is 8192 bytes in size, so the default stack size is not enough. Double it to 16384. This stack overflow can be observed by any S-mode software and leads to M-mode crash or unexpected behavior, as long as the S-mode software does not enable FWFT misaligned delegation [1]. This may be considered a temporary fix until further fixes are made to misaligned handling [2]. Link: https://lore.kernel.org/linux-riscv/nrvt74qnojaubiwjo37ums4lnclu466hovwrhmtbag6f5uhrql@q6msoe2oto4b # [1] Link: https://lore.kernel.org/opensbi/[email protected] # [2] Signed-off-by: Vivian Wang <[email protected]> --- include/sbi/sbi_platform.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/sbi/sbi_platform.h b/include/sbi/sbi_platform.h index fe382b56..ec1e0f73 100644 --- a/include/sbi/sbi_platform.h +++ b/include/sbi/sbi_platform.h @@ -160,7 +160,7 @@ struct sbi_platform_operations { }; /** Platform default per-HART stack size for exception/interrupt handling */ -#define SBI_PLATFORM_DEFAULT_HART_STACK_SIZE 8192 +#define SBI_PLATFORM_DEFAULT_HART_STACK_SIZE 16384 /** Platform default heap size */ #define SBI_PLATFORM_DEFAULT_HEAP_SIZE(__num_hart) \ -- 2.54.0 -- opensbi mailing list [email protected] http://lists.infradead.org/mailman/listinfo/opensbi