[LU-10083] racer test_1: test failed to respond and timed out

• Type: Bug
• Resolution: Cannot Reproduce
• Priority: Minor
• Affects Version/s: Lustre 2.11.0
• Environment: trevis, full, x86_64 servers, ppc clients; servers: el7.4, ldiskfs, branch master, v2.10.53.1, b3642; clients: el7.4, branch master, v2.10.53.1, b3642
• Severity: 3
• Assignee: WC Triage
• Reporter: James Casper

Description

https://testing.hpdd.intel.com/test_sessions/ba995751-659c-4e63-9b5b-fbf101137b78

About 15 processes became stuck (138 stuck traces total). Most traces look similar to this one in client dmesg:

[ 3827.855926] file_concat.sh  D 00003fffb2dad678     0 28316      1 0x00000082
[ 3827.855966] Call Trace:
[ 3827.855992] [c00000004885f5a0] [d000000004116129] __func__.50680+0x2c71/0xffffffffffffd220 [lustre] (unreliable)
[ 3827.856050] [c00000004885f770] [c000000000019634] .__switch_to+0x254/0x460
[ 3827.856092] [c00000004885f820] [c0000000009a9c1c] .__schedule+0x43c/0xb00
[ 3827.856131] [c00000004885f950] [c0000000009ab86c] .schedule_preempt_disabled+0x2c/0xa0
[ 3827.856177] [c00000004885f9c0] [c0000000009a7efc] .__mutex_lock_slowpath+0x10c/0x2c0
[ 3827.856222] [c00000004885fa90] [c0000000009a810c] .mutex_lock+0x5c/0x60
[ 3827.856262] [c00000004885fb10] [c0000000003367bc] .path_openat+0x9dc/0x1ad0
[ 3827.856301] [c00000004885fc50] [c00000000033b800] .do_filp_open+0x40/0xb0
[ 3827.856340] [c00000004885fd80] [c000000000319408] .SyS_open+0x128/0x270
[ 3827.856379] [c00000004885fe30] [c00000000000a184] system_call+0x38/0xb4