[Crash-utility] Re: [PATCH v1 0/3] ppc64: A few bug fixes for 6.x kernel

Hi Tao, On 22/09/24 22:22, Aditya Gupta wrote: 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@lists.crash-utility.osci.io/msg01079.html >> [2]: >> https://www.mail-archive.com/devel@lists.crash-utility.osci.io/msg01116.html >> [3]: >> https://www.mail-archive.com/devel@lists.crash-utility.osci.io/msg01126.html >> [4]: >> https://www.mail-archive.com/devel@lists.crash-utility.osci.io/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(-) >>