在 2022/7/17 下午6:22, Conor.Dooley@xxxxxxxxxxxxx 写道:
On 17/07/2022 05:29, Xianting Tian wrote:
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Hey Xianting,
I think it would be useful for non-kernel patches sent to this list,
if you specified what it was meant to apply to, for example adding
to the start of the subject line. The crash utility
list seems to apply this anyway on their side so it seems reasonable
to add `--subject-prefix="Crash-utility][PATCH" for the benefit of
others.
Thanks Conor for the advice, I will add '[PATCH' and
resend the patches
Thanks,
Conor.
This series of patches make crash tool support RISCV64 arch and the common
commands(*, bt, p, rd, mod, log, set, struct, task, dis and so on).
To make the crash tool work normally for RISCV64 arch, we need a Linux kernel
patch(under reviewing), which exports the kernel virtual memory layout, va_bits,
phys_ram_base to vmcoreinfo, it can simplify the development of crash tool.
THis Linux kernel patch:
https://patchwork.kernel.org/project/linux-riscv/patch/20220714113300.367854-2-xianting.tian@xxxxxxxxxxxxxxxxx/
This series of patches are tested on QEMU RISCV64 env and SoC platform of
T-head Xuantie 910 CPU.
====================================
Some test examples list as below
====================================
... ...
KERNEL: vmlinux
DUMPFILE: vmcore
CPUS: 1
DATE: Fri Jul 15 10:24:25 CST 2022
UPTIME: 00:00:33
LOAD AVERAGE: 0.05, 0.01, 0.00
TASKS: 41
NODENAME: buildroot
RELEASE: 5.18.9
VERSION: #30 SMP Fri Jul 15 09:47:03 CST 2022
MACHINE: riscv64 (unknown Mhz)
MEMORY: 1 GB
PANIC: "Kernel panic - not syncing: sysrq triggered crash"
PID: 113
COMMAND: "sh"
TASK: ff60000002269600 [THREAD_INFO: ff60000002269600]
CPU: 0
STATE: TASK_RUNNING (PANIC)
carsh>
crash> p mem_map
mem_map = $1 = (struct page *) 0xff6000003effbf00
crash> p /x *(struct page *) 0xff6000003effbf00
$5 = {
flags = 0x1000,
{
{
{
lru = {
next = 0xff6000003effbf08,
prev = 0xff6000003effbf08
},
{
__filler = 0xff6000003effbf08,
mlock_count = 0x3effbf08
}
},
mapping = 0x0,
index = 0x0,
private = 0x0
},
... ...
crash> mod
MODULE NAME BASE SIZE OBJECT FILE
ffffffff0113e740 nvme_core ffffffff01133000 98304 (not loaded) [CONFIG_KALLSYMS]
ffffffff011542c0 nvme ffffffff0114c000 61440 (not loaded) [CONFIG_KALLSYMS]
crash> rd ffffffff0113e740 8
ffffffff0113e740: 0000000000000000 ffffffff810874f8 .........t......
ffffffff0113e750: ffffffff011542c8 726f635f656d766e .B......nvme_cor
ffffffff0113e760: 0000000000000065 0000000000000000 e...............
ffffffff0113e770: 0000000000000000 0000000000000000 ................
crash> vtop ffffffff0113e740
VIRTUAL PHYSICAL
ffffffff0113e740 8254d740
PGD: ffffffff810e9ff8 => 2ffff001
P4D: 0000000000000000 => 000000002fffec01
PUD: 00005605c2957470 => 0000000020949801
PMD: 00007fff7f1750c0 => 0000000020947401
PTE: 0 => 209534e7
PAGE: 000000008254d000
PTE PHYSICAL FLAGS
209534e7 8254d000 (PRESENT|READ|WRITE|GLOBAL|ACCESSED|DIRTY)
PAGE PHYSICAL MAPPING INDEX CNT FLAGS
ff6000003f0777d8 8254d000 0 0 1 0
crash> bt
PID: 113 TASK: ff6000000226c200 CPU: 0 COMMAND: "sh"
#0 [ff20000010333b90] riscv_crash_save_regs at ffffffff800078f8
#1 [ff20000010333cf0] panic at ffffffff806578c6
#2 [ff20000010333d50] sysrq_reset_seq_param_set at ffffffff8038c03c
#3 [ff20000010333da0] __handle_sysrq at ffffffff8038c604
#4 [ff20000010333e00] write_sysrq_trigger at ffffffff8038cae4
#5 [ff20000010333e20] proc_reg_write at ffffffff801b7ee8
#6 [ff20000010333e40] vfs_write at ffffffff80152bb2
#7 [ff20000010333e80] ksys_write at ffffffff80152eda
#8 [ff20000010333ed0] sys_write at ffffffff80152f52
Xianting Tian (8):
Add RISCV64 framework code support
RISCV64: Make crash tool enter command line and support some commands
RISCV64: Add 'dis' command support
RISCV64: Add 'irq' command support
RISCV64: Add 'bt' command support
RISCV64: Add 'help -r' command support
RISCV64: Add 'mach' command support
RISCV64: Add the implementation of symbol verify
Makefile | 7 +-
README | 2 +-
configure.c | 39 +-
defs.h | 248 +++++++-
diskdump.c | 21 +-
help.c | 2 +-
lkcd_vmdump_v2_v3.h | 2 +-
netdump.c | 22 +-
ramdump.c | 2 +
riscv64.c | 1414 +++++++++++++++++++++++++++++++++++++++++++
symbols.c | 10 +
11 files changed, 1759 insertions(+), 10 deletions(-)
create mode 100644 riscv64.c
--
2.17.1
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