Details
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Bug
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Resolution: Unresolved
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Minor
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Lustre 2.15.0
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None
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3
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9223372036854775807
Description
modprobe causes following core
PID: 283791 TASK: ffff96ad444e5640 CPU: 1 COMMAND: "modprobe"
#0 [ffffbb30822cf960] machine_kexec at ffffffff94a77167
#1 [ffffbb30822cf9b8] __crash_kexec at ffffffff94bea45a
#2 [ffffbb30822cfa78] crash_kexec at ffffffff94beb6e8
#3 [ffffbb30822cfa80] oops_end at ffffffff94a2e4db
#4 [ffffbb30822cfaa0] page_fault_oops at ffffffff94a88d0b
#5 [ffffbb30822cfaf8] exc_page_fault at ffffffff95654602
#6 [ffffbb30822cfb20] asm_exc_page_fault at ffffffff95800bc2
[exception RIP: cfs_trace_lock_tcd+9]
RIP: ffffffffc0ba3a69 RSP: ffffbb30822cfbd0 RFLAGS: 00010282
RAX: 0000000000000080 RBX: 0000000000000080 RCX: 0000000000000000
RDX: 0000000080000000 RSI: 0000000000000000 RDI: 0000000000000080
RBP: ffffbb30822cfd00 R8: ffffffffc0c51850 R9: 0000000000000010
R10: ffffbb30822cfd20 R11: 0000000000000000 R12: ffffffffc0c9bb80
R13: ffffffffc0c51851 R14: 0000000000000000 R15: 0000000000000080
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
#7 [ffffbb30822cfbd8] libcfs_debug_msg at ffffffffc0ba49a6 [libcfs]
#8 [ffffbb30822cfd18] _MODULE_INIT_START_lnet at ffffffffc0ccf073 [lnet]
#9 [ffffbb30822cfd28] do_one_initcall at ffffffff94a01374
#10 [ffffbb30822cfd90] do_init_module at ffffffff94be57bc
#11 [ffffbb30822cfdb0] __do_sys_finit_module at ffffffff94be73ce
#12 [ffffbb30822cfe70] do_syscall_64 at ffffffff9565018c
#13 [ffffbb30822cff50] entry_SYSCALL_64_after_hwframe at ffffffff958000ea
RIP: 00007fd8bee3ee5d RSP: 00007ffdc1206ce8 RFLAGS: 00000246
RAX: ffffffffffffffda RBX: 0000555564dfdfc0 RCX: 00007fd8bee3ee5d
RDX: 0000000000000000 RSI: 0000555564dfe850 RDI: 0000000000000000
RBP: 0000000000040000 R8: 0000000000000000 R9: 0000000000000004
R10: 0000000000000000 R11: 0000000000000246 R12: 0000555564dfe850
R13: 0000555564dfdf60 R14: 0000555564dfdfc0 R15: 0000555564dfe890
ORIG_RAX: 0000000000000139 CS: 0033 SS: 002b
An additional dis shows for _MODULE_INIT_START_lnet
0xffffffffc0ccf073 <_MODULE_INIT_START_lnet+115>: call 0xffffffffc0ba3090 <libcfs_setup>
Attachments
Issue Links
- is related to
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LU-14428 Convert tracefile to use ring_buffer from linux
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- Open
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Activity
It is happening on lustre master clients during exa testing.
xxx crashed during conf-sanity test_76a.
What I am aware of it is happening sporadic. May be some problem with module dependencies during startup.
If you look at tcd parameter RDI: 0000000000000080 it seems like the memory is not initialized at all.
It looks like someone is trying to use some debugging before the debug buffer is setup. Do you have a reproducer?
This problem seem to be only lustre_master related and seem to caused by the new libcfs_setup in lnet_init.
As per discussion on the LWG call today, moving tickets that do not appear to be essential to fix version 2.17. If the fix lands before code freeze we will update the fix version to reflect that but we want to focus on activities on the critical path. Please speak up if you think that this issue definitely needs to be fixed before we could issue a 2.16 release.