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| author | Alexander Gordeev <agordeev@linux.ibm.com> | 2024-02-21 15:25:06 +0300 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2024-02-26 12:25:09 +0300 |
| commit | 8495fd4dfee89b9b07353e8d01f0569c0330ff12 (patch) | |
| tree | 5a4831f6444ad45a5a0b98b057ddde871c8692c8 /arch/s390/boot/startup.c | |
| parent | 3334fda639cfa7bb27a457f85f4ce06d622e0511 (diff) | |
| download | linux-8495fd4dfee89b9b07353e8d01f0569c0330ff12.tar.xz | |
s390/boot: sanitize kaslr_adjust_relocs() function prototype
Do not use vmlinux.image_size within kaslr_adjust_relocs() function
to calculate the upper relocation table boundary. Instead, make both
lower and upper boundaries the function input parameters.
Acked-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/boot/startup.c')
| -rw-r--r-- | arch/s390/boot/startup.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/arch/s390/boot/startup.c b/arch/s390/boot/startup.c index c1a758921b7a..09490ddd6973 100644 --- a/arch/s390/boot/startup.c +++ b/arch/s390/boot/startup.c @@ -142,7 +142,7 @@ static void copy_bootdata(void) } #ifdef CONFIG_PIE_BUILD -static void kaslr_adjust_relocs(unsigned long min_addr, unsigned long offset) +static void kaslr_adjust_relocs(unsigned long min_addr, unsigned long max_addr, unsigned long offset) { Elf64_Rela *rela_start, *rela_end, *rela; int r_type, r_sym, rc; @@ -196,10 +196,9 @@ static void free_relocs(void) physmem_free(RR_RELOC); } -static void kaslr_adjust_relocs(unsigned long min_addr, unsigned long offset) +static void kaslr_adjust_relocs(unsigned long min_addr, unsigned long max_addr, unsigned long offset) { int *reloc; - unsigned long max_addr = min_addr + vmlinux.image_size; long loc; /* Adjust R_390_64 relocations */ @@ -464,7 +463,7 @@ void startup_kernel(void) * to bootdata made by setup_vmem() */ clear_bss_section(vmlinux_lma); - kaslr_adjust_relocs(vmlinux_lma, __kaslr_offset); + kaslr_adjust_relocs(vmlinux_lma, vmlinux_lma + vmlinux.image_size, __kaslr_offset); kaslr_adjust_got(__kaslr_offset); free_relocs(); setup_vmem(asce_limit); |