powerpc/fadump: fix "seek error: kernel virtual address: c0000027f5e19000" observed while running crash tool on vmcore captured during fadump
Bugzilla: http://bugzilla.redhat.com/2040289
Brew: https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=42844000
Tested:
[root@d87p1 127.0.0.1-2022-02-10-05:49:13]# crash /usr/lib/debug/lib/modules/5.14.0-55.bz2040289_test.el9.ppc64le/vmlinux vmcore
crash 8.0.0-4.el9
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KERNEL: /usr/lib/debug/lib/modules/5.14.0-55.bz2040289_test.el9.ppc64le/vmlinux
DUMPFILE: vmcore [PARTIAL DUMP]
CPUS: 1920
DATE: Thu Feb 10 05:45:03 EST 2022
UPTIME: 00:04:45
LOAD AVERAGE: 0.62, 0.52, 0.22
TASKS: 15734
NODENAME: d87p1.aus.stglabs.ibm.com
RELEASE: 5.14.0-55.bz2040289_test.el9.ppc64le
VERSION: #1 SMP Mon Feb 7 08:14:32 EST 2022
MACHINE: ppc64le (3250 Mhz)
MEMORY: 2500 GB
PANIC: "Kernel panic - not syncing: sysrq triggered crash"
PID: 25743
COMMAND: "bash"
TASK: c0000139065e9180 [THREAD_INFO: c0000139065e9180]
CPU: 98
STATE: TASK_RUNNING (PANIC)
crash> bt
PID: 25743 TASK: c0000139065e9180 CPU: 98 COMMAND: "bash"
#0 [c0000139063f3a30] crash_fadump at c000000000054fcc
#1 [c0000139063f3a90] ppc_panic_event at c00000000002e660
#2 [c0000139063f3ac0] atomic_notifier_call_chain at c000000000197f58
#3 [c0000139063f3b00] panic at c00000000015a9d0
#4 [c0000139063f3ba0] sysrq_handle_crash at c00000000090c458
#5 [c0000139063f3c00] __handle_sysrq at c00000000090d0ac
#6 [c0000139063f3ca0] write_sysrq_trigger at c00000000090d938
#7 [c0000139063f3ce0] proc_reg_write at c00000000061812c
#8 [c0000139063f3d10] vfs_write at c0000000005463ec
#9 [c0000139063f3d60] ksys_write at c000000000546974
#10 [c0000139063f3db0] system_call_exception at c000000000030880
#11 [c0000139063f3e10] system_call_vectored_common at c00000000000c168
crash> bt -a
PID: 0 TASK: c0000000029c3f00 CPU: 0 COMMAND: "swapper/0"
R0: 0000000000000000 R1: c000000002a43ce0 R2: c000000002a46f00
R3: 0000000000000000 R4: 80040000bc237c10 R5: 0000000000000000
R6: 0000000000000000 R7: 0000000000000080 R8: 0000000000000000
R9: 0000000000000039 R10: 0000000000000000 R11: ffffffffffffffff
R12: ffffffffffffff7f R13: c000000002dd0000 R14: 0000000000000000
R15: 0000000000000000 R16: 0000000000000000 R17: 0000000000000000
R18: 000000000f6b3dc0 R19: 0000000000000008 R20: 000000000f6a2ac0
R21: 0000000000000008 R22: 0000000008a3fc88 R23: 0000000000000001
R24: 0000000000000001 R25: 0000000000000000 R26: 000000231a7d9720
R27: 0000000000000001 R28: 0000000000000000 R29: 0000000000000001
R30: c0000000021520c0 R31: c0000000021520c8
NIP: c0000000000f8ff4 MSR: 800000000290b033 OR3: 0000000000000000
CTR: 0000000000000000 LR: c000000000b40a68 XER: 0000000020040000
CCR: 0000000022000428 MQ: 0000000000000000 DAR: 00007ff1a7a4a188
DSISR: 0000000042000000 Syscall Result: 0000000000000000
[NIP : plpar_hcall_norets_notrace+24]
[LR : dedicated_cede_loop+360]
#0 [c000000002a43ce0] hrtimer_next_event_without at c000000000247450
#1 [c000000002a43d60] cpuidle_enter_state at c000000000b3d3a4
#2 [c000000002a43dc0] cpuidle_enter at c000000000b3d71c
#3 [c000000002a43e00] cpuidle_idle_call at c0000000001b9a90
#4 [c000000002a43e50] do_idle at c0000000001b9ca8
#5 [c000000002a43ea0] cpu_startup_entry at c0000000001b9ff8
#6 [c000000002a43ed0] rest_init at c00000000001291c
#7 [c000000002a43f00] start_kernel at c0000000020051c8
#8 [c000000002a43f90] start_here_common at c00000000000d39c
PID: 0 TASK: c00000000a107200 CPU: 1 COMMAND: "swapper/1"
R0: 0000000000000000 R1: c00000000a0efd50 R2: c000000002a46f00
R3: 0000000000000000 R4: 80040000bc237c10 R5: 0000000000000000
R6: 0000000000000000 R7: 0000000000000001 R8: 0000000000000000
R9: 0000000000000090 R10: 0000000000000000 R11: 0000000000102f00
R12: 00000000000fef00 R13: c00000299ffff300 R14: 0000000000000000
R15: 000000001f23e020 R16: 0000000000000000 R17: 0000000000000000
R18: 0000000000000000 R19: 0000000000000000 R20: 0000000000000000
R21: 0000000000000000 R22: 0000000000000000 R23: 0000000000000001
R24: 0000000000000001 R25: 0000000000000000 R26: 00000022ae9b7abe
R27: 0000000000000001 R28: 0000000000000000 R29: 0000000000000001
R30: c0000000021520c0 R31: c0000000021520c8
NIP: c0000000000f8ff4 MSR: 800000000290b033 OR3: 0000000000000000
CTR: 0000000000000000 LR: c000000000b40a68 XER: 0000000020040000
CCR: 0000000024000228 MQ: 0000000000000000 DAR: 00007fff963308f8
DSISR: 0000000040000000 Syscall Result: 0000000000000000
[NIP : plpar_hcall_norets_notrace+24]
[LR : dedicated_cede_loop+360]
#0 [c00000000a0efd50] (null) at 7fffffffffffffff (unreliable)
#1 [c00000000a0efdd0] cpuidle_enter_state at c000000000b3d3a4
#2 [c00000000a0efe30] cpuidle_enter at c000000000b3d71c
#3 [c00000000a0efe70] cpuidle_idle_call at c0000000001b9a90
#4 [c00000000a0efec0] do_idle at c0000000001b9ca8
#5 [c00000000a0eff10] cpu_startup_entry at c0000000001b9ffc
#6 [c00000000a0eff40] start_secondary at c000000000060620
#7 [c00000000a0eff90] start_secondary_prolog at c00000000000d254
PID: 0 TASK: c00000000a13c900 CPU: 2 COMMAND: "swapper/2"
R0: 0000000000000000 R1: c00000000a0e3d50 R2: c000000002a46f00
R3: 0000000000000000 R4: 80040000bc237c10 R5: 0000000000000000
R6: 0000000000000000 R7: 0000000000000002 R8: 0000000000000000
R9: 0000000000000090 R10: 0000000000000000 R11: 0000000000102f00
R12: 00000000000fef00 R13: c00000299fffdf00 R14: 0000000000000000
R15: 000000001f23e040 R16: 0000000000000000 R17: 0000000000000000
R18: 0000000000000000 R19: 0000000000000000 R20: 0000000000000000
R21: 0000000000000000 R22: 0000000000000000 R23: 0000000000000001
R24: 0000000000000002 R25: 0000000000000000 R26: 00000022ae9b8198
R27: 0000000000000001 R28: 0000000000000000 R29: 0000000000000001
R30: c0000000021520c0 R31: c0000000021520c8
NIP: c0000000000f8ff4 MSR: 800000000290b033 OR3: 0000000000000000
CTR: 0000000000000000 LR: c000000000b40a68 XER: 0000000020040000Signed-off-by: Diego Domingos didoming@redhat.com