Apply initial changes to support kernel address space layout randomization (KASLR) for loongarch64. This is the minimal patch required to process loongarch64 dumps for the kernels configured with CONFIG_RANDOMIZE_BASE(CONFIG_RELOCATABLE), and to accept the "--kaslr" command line option. Only dumpfiles whose headers contain kernel VMCOREINFO data are supported.
Example: crash vmcore vmlinux --kaslr auto Co-developed-by: Youling Tang <[email protected]> Signed-off-by: Youling Tang <[email protected]> Signed-off-by: Ming Wang <[email protected]> --- crash.8 | 2 +- help.c | 9 +++++---- main.c | 3 ++- symbols.c | 10 ++++++---- 4 files changed, 14 insertions(+), 10 deletions(-) diff --git a/crash.8 b/crash.8 index e553a0b..0662f92 100644 --- a/crash.8 +++ b/crash.8 @@ -491,7 +491,7 @@ Search for the kernel source code in directory instead of in the standard location that is compiled into the debuginfo data. .TP .BI --kaslr \ offset | auto -If an x86_64 kernel was configured with +If an x86, x86_64, s390x or loongarch64 kernel was configured with .B CONFIG_RANDOMIZE_BASE, the offset value is equal to the difference between the symbol values compiled into the vmlinux file and their relocated KASLR values. If set to diff --git a/help.c b/help.c index d80e843..cd3c97f 100644 --- a/help.c +++ b/help.c @@ -336,10 +336,11 @@ char *program_usage_info[] = { " and verification. The default count is 32768.", "", " --kaslr offset | auto", - " If x86, x86_64 or s390x kernel was configured with CONFIG_RANDOMIZE_BASE,", - " the offset value is equal to the difference between the symbol values ", - " compiled into the vmlinux file and their relocated KASLR value. If", - " set to auto, the KASLR offset value will be automatically calculated.", + " If x86, x86_64, s390x or loongarch64 kernel was configured with", + " CONFIG_RANDOMIZE_BASE, the offset value is equal to the difference", + " between the symbol values compiled into the vmlinux file and their", + " relocated KASLR value. If set to auto, the KASLR offset value will", + " be automatically calculated.", "", " --minimal", " Bring up a session that is restricted to the log, dis, rd, sym,", diff --git a/main.c b/main.c index 4fd4ca5..0b6b927 100644 --- a/main.c +++ b/main.c @@ -228,7 +228,8 @@ main(int argc, char **argv) } else if (STREQ(long_options[option_index].name, "kaslr")) { if (!machine_type("X86_64") && !machine_type("ARM64") && !machine_type("X86") && - !machine_type("S390X") && !machine_type("RISCV64")) + !machine_type("S390X") && !machine_type("RISCV64") && ++ !machine_type("LOONGARCH64")) error(INFO, "--kaslr not valid " "with this machine type.\n"); else if (STREQ(optarg, "auto")) diff --git a/symbols.c b/symbols.c index 11e0ca2..d017681 100644 --- a/symbols.c +++ b/symbols.c @@ -629,7 +629,8 @@ kaslr_init(void) char *string; if ((!machine_type("X86_64") && !machine_type("ARM64") && !machine_type("X86") && - !machine_type("S390X") && !machine_type("RISCV64")) || (kt->flags & RELOC_SET)) + !machine_type("S390X") && !machine_type("RISCV64") && !machine_type("LOONGARCH64")) || + (kt->flags & RELOC_SET)) return; if (!kt->vmcoreinfo._stext_SYMBOL && @@ -794,8 +795,8 @@ store_symbols(bfd *abfd, int dynamic, void *minisyms, long symcount, fromend, size, store); } else if (!(kt->flags & RELOC_SET)) kt->flags |= RELOC_FORCE; - } else if (machine_type("X86_64") || machine_type("ARM64") || - machine_type("S390X") || machine_type("RISCV64")) { + } else if (machine_type("X86_64") || machine_type("ARM64") || machine_type("S390X") || + machine_type("RISCV64") || machine_type("LOONGARCH64")) { if ((kt->flags2 & RELOC_AUTO) && !(kt->flags & RELOC_SET)) derive_kaslr_offset(abfd, dynamic, from, fromend, size, store); @@ -867,7 +868,8 @@ store_sysmap_symbols(void) strerror(errno)); if (!machine_type("X86") && !machine_type("X86_64") && - !machine_type("ARM64") && !machine_type("S390X")) + !machine_type("ARM64") && !machine_type("S390X") && + !machine_type("LOONGARCH64")) kt->flags &= ~RELOC_SET; first = 0; -- 2.39.2 -- Crash-utility mailing list -- [email protected] To unsubscribe send an email to [email protected] https://${domain_name}/admin/lists/devel.lists.crash-utility.osci.io/ Contribution Guidelines: https://github.com/crash-utility/crash/wiki
