[LU-5928] sanity test_133f timeout: lprocfs_exp_nodemap_seq_show() oops

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.7.0
• Affects Version/s: Lustre 2.7.0
• Environment: before upgrade system is 2.6.0; after upgrade: MDS and OSS are lustre-master build # 2733; clients are 2.6.0
• Severity: 3
• Assignee: Dmitry Eremin (Inactive)
• Reporter: Sarah Liu

Description

MDS console:
After rolling upgrade OSS and MDS from 2.6.0 to master, clients are still 2.6.0, when running saniy sub test 133f, MDS oops

Lustre: DEBUG MARKER: == sanity test 133f: Check for LBUGs/Oopses/unreadable files in /proc == 14:30:46 (1416263446)
general protection fault: 0000 [#1] SMP 
last sysfs file: /sys/devices/pci0000:ff/0000:ff:13.6/irq
CPU 25 
Modules linked in: osp(U) mdd(U) lod(U) mdt(U) lfsck(U) mgs(U) mgc(U) osd_ldiskfs(U) lquota(U) ldiskfs(U) jbd2 lustre(U) lov(U) mdc(U) fid(U) lmv(U) fld(U) ksocklnd(U) ptlrpc(U) obdclass(U) lnet(U) sha512_generic sha256_generic crc32c_intel libcfs(U) nfsd exportfs autofs4 nfs lockd fscache auth_rpcgss nfs_acl sunrpc cpufreq_ondemand acpi_cpufreq freq_table mperf ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm ib_addr ipv6 iTCO_wdt iTCO_vendor_support microcode sg sb_edac edac_core i2c_i801 lpc_ich mfd_core ioatdma mlx4_ib ib_sa ib_mad ib_core mlx4_en mlx4_core igb dca i2c_algo_bit i2c_core ptp pps_core shpchp ext3 jbd mbcache sd_mod crc_t10dif isci libsas scsi_transport_sas ahci wmi dm_mirror dm_region_hash dm_log dm_mod [last unloaded: llog_test]

Pid: 68277, comm: cat Not tainted 2.6.32-431.29.2.el6_lustre.x86_64 #1 Intel Corporation S2600GZ/S2600GZ
RIP: 0010:[<ffffffff8128af39>]  [<ffffffff8128af39>] strnlen+0x9/0x40
RSP: 0018:ffff880823671ca8  EFLAGS: 00010286
RAX: ffffffff817b5db4 RBX: ffff880820cda000 RCX: 0000000000000002
RDX: 5f6b636568635f63 RSI: ffffffffffffffff RDI: 5f6b636568635f63
RBP: ffff880823671ca8 R08: 0000000000000073 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: ffff880820cd9000
R13: 5f6b636568635f63 R14: 00000000ffffffff R15: 0000000000000000
FS:  00007fd2dee1c700(0000) GS:ffff88044e520000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000228a038 CR3: 000000082201c000 CR4: 00000000000407e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process cat (pid: 68277, threadinfo ffff880823670000, task ffff88081eb74aa0)
Stack:
 ffff880823671ce8 ffffffff8128c1f0 0000000000000000 ffff880820cd9000
<d> ffffffffa0603a59 ffffffffa0603a57 ffff880823671db8 ffff880820cda000
<d> ffff880823671d88 ffffffff8128d638 0000000000000004 0000000affffffff
Call Trace:
 [<ffffffff8128c1f0>] string+0x40/0x100
 [<ffffffff8128d638>] vsnprintf+0x218/0x5e0
 [<ffffffff811f3cc0>] ? proc_reg_open+0x0/0x160
 [<ffffffff812284cf>] ? security_inode_permission+0x1f/0x30
 [<ffffffff811ae952>] seq_vprintf+0x32/0x60
 [<ffffffff811ae9bd>] seq_printf+0x3d/0x40
 [<ffffffff811aeac0>] ? seq_read+0x0/0x400
 [<ffffffffa05dc5e7>] lprocfs_exp_nodemap_seq_show+0x27/0x40 [obdclass]
 [<ffffffff811aebb2>] seq_read+0xf2/0x400
 [<ffffffff811f42fe>] proc_reg_read+0x7e/0xc0
 [<ffffffff81189a75>] vfs_read+0xb5/0x1a0
 [<ffffffff81189bb1>] sys_read+0x51/0x90
 [<ffffffff8100b072>] system_call_fastpath+0x16/0x1b
Code: 66 90 48 83 c2 01 80 3a 00 75 f7 48 89 d0 48 29 f8 c9 c3 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 55 48 85 f6 48 89 e5 74 2e <80> 3f 00 74 29 48 83 ee 01 48 89 f8 eb 12 66 0f 1f 84 00 00 00 
RIP  [<ffffffff8128af39>] strnlen+0x9/0x40
 RSP <ffff880823671ca8>
Initializing cgroup subsys cpuset
Initializing cgroup subsys cpu
Linux version 2.6.32-431.29.2.el6_lustre.x86_64 ([e-mail]) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-11) (GCC) ) #1 SMP Thu Nov 6 12:02:29 PST 2014
Command line: ro root=UUID=c301d149-2cdb-40cc-aaad-0c2a8780bdf7 rd_NO_LUKS rd_NO_LVM LANG=en_US.UTF-8 rd_NO_MD console=tty0 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM console=ttyS0,115200 irqpoll nr_cpus=1 reset_devices cgroup_disable=memory mce=off disable_cpu_apicid=0 memmap=exactmap memmap=574K@4K memmap=133550K@49726K elfcorehdr=183276K memmap=4K$0K memmap=62K$578K memmap=128K$896K memmap=42200K$3067876K memmap=992K#3110076K memmap=488K#3111068K memmap=568K#3111556K memmap=516K#3112124K memmap=294912K$3112960K memmap=4K$4173824K memmap=4K$4174948K memmap=16K$4174960K memmap=4K$4175872K memmap=6016K$4188288K

Issue Links

• is related to: LU-5963 wrong hashing in LU-4647