Hi Tao,
On 22/09/24 22:22, Aditya Gupta wrote:
Hi Tao,
crash-utility works well for me on pp64le, with the patches applied.
Seems to cause some issues, for every swapper task, it shows all stack
frames as '_end':
crash> bt
PID: 0 TASK: c00000000a9cff00 CPU: 5 COMMAND: "swapper/5"
R0: 0000000000000000 R1: c00000000aaa7d10 R2: c000000001c19000
R3: 0000000000000000 R4: 0000000000000000 R5: 000000000000003a
R6: 0000000000000000 R7: 0000010000000000 R8: ffffffffffffffbf
R9: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000
R12: 0000000000000000 R13: c00000297fffa300 R14: 0000000000000000
R15: 000000001ef111a0 R16: 0000000000000000 R17: 0000000000000000
R18: 0000000000000000 R19: 0000000000000000 R20: 0000000000000000
R21: 0000000000000000 R22: 0000000000000000 R23: 0000000000000001
R24: 0000000000000005 R25: 0000000000000000 R26: 000002a07e5f19e2
R27: 0000000000000000 R28: 0000000000000000 R29: 0000000000000001
R30: c0000000021820a0 R31: c0000000021820a8
NIP: c0000000000fabec MSR: 800000000298b033 OR3: 000000000000011c
CTR: 0000000000000000 LR: c00000000115b9c8 XER: 0000000020040000
CCR: 0000000022000202 MQ: 0000000000000000 DAR: 0000000000000000
DSISR: 0000000000000000 Syscall Result: 0000000000000000
[NIP : plpar_hcall_norets_notrace+24]
[LR : check_and_cede_processor+72]
#0 [c00000000aaa7d10] _end at c00000000aaa7d60 (unreliable)
#1 [c00000000aaa7d60] _end at c00000000aaa7dc0 (unreliable)
#2 [c00000000aaa7db0] _end at c00000000aaa7e60 (unreliable)
Checking why.
Thanks,
Aditya Gupta
Haven't done extensive testing to give a tested-by, but will try.
Overall looks good to me.
Thanks,
Aditya Gupta
On 18/09/24 05:12, Tao Liu wrote:
There are 3 bugs, which are caused due to newer kernel change, they were
found when testing the gdb stack unwinding support[1] for ppc64
against the
6.x kernels. See the discussion in [2][3]. So they'd better to be fixed
in a batch.
Note: the NO.1 patch: "ppc64: Fix bt printing error stack trace" was
posted individually in [4], and it gets updated in this patchset.
So please review this patchset instead.
[1]:
https://www.mail-archive.com/devel@xxxxxxxxxxxxxxxxxxxxxxxxxxx/msg01079.html
[2]:
https://www.mail-archive.com/devel@xxxxxxxxxxxxxxxxxxxxxxxxxxx/msg01116.html
[3]:
https://www.mail-archive.com/devel@xxxxxxxxxxxxxxxxxxxxxxxxxxx/msg01126.html
[4]:
https://www.mail-archive.com/devel@xxxxxxxxxxxxxxxxxxxxxxxxxxx/msg01124.html
Tao Liu (3):
ppc64: Fix bt printing error stack trace
ppc64: check sp at the start of stack back trace
ppc64: fix the bug eframe won't print for newer kernel
defs.h | 6 +++-
ppc64.c | 110 +++++++++++++++++++++++++++++++++++++++++++++++++-------
2 files changed, 102 insertions(+), 14 deletions(-)
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