[LU-14444] LBUG: client kernel panic with "ASSERTION( req->rq_reqmsg ) failed"

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.15.0
• Affects Version/s: Lustre 2.14.0, Lustre 2.12.6
• Labels: sec
• Severity: 3
• Assignee: Sebastien Buisson
• Reporter: Sebastien Buisson

Description

A client node got a kernel panic with the log:

2021-02-17T13:04:06.296603+01:00 node1001 kern.warning kernel: Lustre: 214367:0:(sec_gss.c:315:cli_ctx_expire()) ctx 00000000978c878b(72801->lustre-MDT0001_UUID) get expired: 1613563430(-16s)
2021-02-17T13:04:06.343079+01:00 node1001 kern.warning kernel: Lustre: 214372:0:(sec_gss.c:377:gss_cli_ctx_uptodate()) client refreshed ctx 000000004331a6ad idx 0xb7afb39c064dbfbe (72801->lustre-MDT0001_UUID), expiry 1613564032(+586s)
2021-02-17T13:04:06.370536+01:00 node1001 kern.warning kernel: Lustre: 214367:0:(sec_gss.c:1228:gss_cli_ctx_fini_common()) gss.keyring@0000000023f60ad5: destroy ctx 00000000e97836cf(72801->lustre-MDT0000_UUID)
2021-02-17T13:04:07.339156+01:00 node1001 kern.emerg kernel: LustreError: 214366:0:(sec.c:497:sptlrpc_req_ctx_switch()) ASSERTION( req->rq_reqmsg ) failed:
2021-02-17T13:04:07.339293+01:00 node1001 kern.emerg kernel: LustreError: 214366:0:(sec.c:497:sptlrpc_req_ctx_switch()) LBUG
2021-02-17T13:04:07.339357+01:00 node1001 kern.info kernel: Pid: 214366, comm: slurm_script 4.18.0-193.6.3.el8_2.x86_64 #1 SMP Mon Jun 1 20:24:55 UTC 2020
2021-02-17T13:04:07.351784+01:00 node1001 kern.info kernel: Call Trace TBD:
2021-02-17T13:04:07.351850+01:00 node1001 kern.emerg kernel: Kernel panic - not syncing: LBUG

The error occurred while doing this kind of test:

while :; do date; klist; ls $HOME|wc; klist; sleep 1; done