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759d4899d9
Sometimes the kernel fails to boot with: "The Linux kernel failed to boot with the KernelAddressSanitizer: out of memory during initialisation" even with big amounts of memory when both kaslr and kasan are enabled. The problem is that kasan initialization code requires 1/8 of physical memory plus some for page tables. To keep as much code instrumented as possible kasan avoids using memblock for memory allocations. Instead kasan uses trivial memory allocator which simply chops off the memory from the end of online physical memory. For that reason when kaslr is enabled together with kasan avoid positioning kernel into upper memory region which would be utilized during kasan initialization. Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> |
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| .. | ||
| compressed | ||
| .gitignore | ||
| als.c | ||
| boot.h | ||
| cmdline.c | ||
| ctype.c | ||
| ebcdic.c | ||
| head.S | ||
| head_kdump.S | ||
| install.sh | ||
| ipl_parm.c | ||
| ipl_report.c | ||
| ipl_vmparm.c | ||
| kaslr.c | ||
| machine_kexec_reloc.c | ||
| Makefile | ||
| mem.S | ||
| mem_detect.c | ||
| sclp_early_core.c | ||
| startup.c | ||
| string.c | ||
| text_dma.S | ||
| uv.c | ||
| version.c | ||