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Each PROT_WRITE segment has implicit .bss on end of last page (64-bit only for now);

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Also  workaround kernel bug invoking the escape hatch on arm64 (aarch64).
https://github.com/upx/upx/issues/611
This commit is contained in:
John Reiser
2022-10-27 11:01:37 -07:00
committed by Markus F.X.J. Oberhumer
parent 7dd2cdea1e
commit 50a6698715
10 changed files with 645 additions and 589 deletions
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src/stub/tmp/amd64-linux.elf-fold.map
Vendored
+10 -10
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@@ -8,7 +8,7 @@ Linker script and memory map
0x00000000001000bc . = ((0x100000 + SIZEOF_HEADERS) + 0xc)
.text 0x00000000001000bc 0x88c
.text 0x00000000001000bc 0x874
*(.text)
.text 0x00000000001000bc 0x199 tmp/amd64-linux.elf-fold.o
0x0000000000100245 munmap
@@ -21,20 +21,20 @@ Linker script and memory map
0x0000000000100249 mprotect
0x000000000010023d close
*fill* 0x0000000000100255 0x3 00
.text 0x0000000000100258 0x6ee tmp/amd64-linux.elf-main.o
0x00000000001007fe upx_main
.text 0x0000000000100258 0x6d7 tmp/amd64-linux.elf-main.o
0x00000000001007e7 upx_main
*(.data)
*fill* 0x0000000000100946 0x2 00
.data 0x0000000000100948 0x0 tmp/amd64-linux.elf-fold.o
.data 0x0000000000100948 0x0 tmp/amd64-linux.elf-main.o
*fill* 0x000000000010092f 0x1 00
.data 0x0000000000100930 0x0 tmp/amd64-linux.elf-fold.o
.data 0x0000000000100930 0x0 tmp/amd64-linux.elf-main.o
.data
.bss 0x0000000000100948 0x0
.bss 0x0000000000100948 0x0 tmp/amd64-linux.elf-fold.o
.bss 0x0000000000100948 0x0 tmp/amd64-linux.elf-main.o
.bss 0x0000000000100930 0x0
.bss 0x0000000000100930 0x0 tmp/amd64-linux.elf-fold.o
.bss 0x0000000000100930 0x0 tmp/amd64-linux.elf-main.o
.rela.dyn 0x0000000000100948 0x0
.rela.dyn 0x0000000000100930 0x0
.rela.text 0x0000000000000000 0x0 tmp/amd64-linux.elf-fold.o
LOAD tmp/amd64-linux.elf-fold.o
LOAD tmp/amd64-linux.elf-main.o