Messages in this thread | | | Date | Thu, 29 Dec 2022 13:47:49 +0100 | From | Borislav Petkov <> | Subject | Re: [PATCH qemu] x86: don't let decompressed kernel image clobber setup_data |
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On Wed, Dec 28, 2022 at 11:31:34PM -0800, H. Peter Anvin wrote: > As far as a crash... that sounds like a big and a pretty serious one at that. > > Could you let me know what kernel you are using and how *exactly* you are booting it?
Right, with CONFIG_X86_VERBOSE_BOOTUP=y in a guest here, it says:
early console in extract_kernel input_data: 0x000000000be073a8 input_len: 0x00000000008cfc43 output: 0x0000000001000000 output_len: 0x000000000b600a98 kernel_total_size: 0x000000000ac26000 needed_size: 0x000000000b800000 trampoline_32bit: 0x000000000009d000
so that's a ~9M kernel which gets decompressed at 0x1000000 and the output len is, what, ~180M which looks like plenty to me...
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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