[LU-4698] obdfilter-survey test_3a crash on OST: tgt_request_handle

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.8.0
• Affects Version/s: Lustre 2.6.0
• Environment: patch on master, single MDS/MGS, single OSS, two OSTs
• Assignee: Nathaniel Clark
• Reporter: Nathaniel Clark

Description

During "normal" run of obdfilter-survey test 3a:
OST Console log:

Mar  3 13:19:14 oss1 kernel: Lustre: Echo OBD driver; http://www.lustre.org/
Mar  3 13:19:17 oss1 kernel: LustreError: 5569:0:(sec_config.c:93:sptlrpc_target_sec_part()) unknown target ffff88001568e038(obdecho)
Mar  3 13:19:17 oss1 kernel: BUG: unable to handle kernel NULL pointer dereference at 000000000000001c
Mar  3 13:19:17 oss1 kernel: IP: [<ffffffffa15db6a5>] tgt_request_handle+0x125/0xac0 [ptlrpc]
Mar  3 13:19:17 oss1 kernel: PGD 0 
Mar  3 13:19:17 oss1 kernel: Oops: 0000 [#1] SMP 
Mar  3 13:19:17 oss1 kernel: last sysfs file: /sys/module/ptlrpc/initstate
Mar  3 13:19:17 oss1 kernel: CPU 0 
Mar  3 13:19:17 oss1 kernel: Modules linked in: lustre(U) ofd(U) osp(U) lod(U) ost(U) mdt(U) mdd(U) mgs(U) nodemap(U) osd_ldiskfs(U) ldiskfs(U) lquota(U) lfsck(U) obdecho(U) mgc(U) lov(U) osc(U) mdc(U) lmv(U) fid(U) fld(U) ptlrpc(U) obdclass(U) ksocklnd(U) lnet(U) libcfs(U) exportfs jbd sha512_generic sha256_generic crc32c_intel nfs lockd fscache auth_rpcgss nfs_acl sunrpc ipv6 ppdev parport_pc parport zfs(P)(U) zcommon(P)(U) znvpair(P)(U) zavl(P)(U) zunicode(P)(U) spl(U) zlib_deflate btusb bluetooth rfkill snd_ens1371 snd_rawmidi snd_ac97_codec ac97_bus snd_seq snd_seq_device snd_pcm snd_timer snd soundcore snd_page_alloc e1000 vmware_balloon sg i2c_piix4 i2c_core shpchp ext4 jbd2 mbcache sd_mod crc_t10dif sr_mod cdrom mptspi mptscsih mptbase scsi_transport_spi pata_acpi ata_generic ata_piix dm_mirror dm_region_hash dm_log dm_mod [last unloaded: libcfs]
Mar  3 13:19:17 oss1 kernel: 
Mar  3 13:19:17 oss1 kernel: Pid: 5569, comm: ll_ost00_002 Tainted: P           ---------------    2.6.32-431.5.1.el6_lustre.gb1c0d36.x86_64 #1 VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform
Mar  3 13:19:17 oss1 kernel: RIP: 0010:[<ffffffffa15db6a5>]  [<ffffffffa15db6a5>] tgt_request_handle+0x125/0xac0 [ptlrpc]
Mar  3 13:19:17 oss1 kernel: RSP: 0018:ffff8800287f7d50  EFLAGS: 00010246
Mar  3 13:19:17 oss1 kernel: RAX: ffff88002bf41400 RBX: ffff88002bdaec00 RCX: 0000000000000001
Mar  3 13:19:17 oss1 kernel: RDX: ffff88002bf41540 RSI: 0000000000000000 RDI: ffff88002bf41540
Mar  3 13:19:17 oss1 kernel: RBP: ffff8800287f7da0 R08: 0000000000000000 R09: ffffffff81645de0
Mar  3 13:19:17 oss1 kernel: R10: 0000000000000000 R11: 0000000000000000 R12: ffff8800287c7240
Mar  3 13:19:17 oss1 kernel: R13: 0000000000000008 R14: ffff88002bdaef70 R15: 0000000000000000
Mar  3 13:19:17 oss1 kernel: FS:  0000000000000000(0000) GS:ffff880003200000(0000) knlGS:0000000000000000
Mar  3 13:19:17 oss1 kernel: CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
Mar  3 13:19:17 oss1 kernel: CR2: 000000000000001c CR3: 0000000027843000 CR4: 00000000000007f0
Mar  3 13:19:17 oss1 kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Mar  3 13:19:17 oss1 kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Mar  3 13:19:17 oss1 kernel: Process ll_ost00_002 (pid: 5569, threadinfo ffff8800287f6000, task ffff88002921a080)
Mar  3 13:19:17 oss1 kernel: Stack:
Mar  3 13:19:17 oss1 kernel: 0000000000000010 ffff8800287f7d01 ffff8800287f7d70 ffff880013a7c000
Mar  3 13:19:17 oss1 kernel: <d> ffff880013a7c000 ffff88002b747540 ffff880015218400 ffff88002bdaec00
Mar  3 13:19:17 oss1 kernel: <d> 0000000000000001 ffff88002b6bb200 ffff8800287f7ee0 ffffffffa158a99a
Mar  3 13:19:17 oss1 kernel: Call Trace:
Mar  3 13:19:17 oss1 kernel: [<ffffffffa158a99a>] ptlrpc_main+0xd1a/0x1980 [ptlrpc]
Mar  3 13:19:17 oss1 kernel: [<ffffffff81528090>] ? thread_return+0x4e/0x76e
Mar  3 13:19:17 oss1 kernel: [<ffffffffa1589c80>] ? ptlrpc_main+0x0/0x1980 [ptlrpc]
Mar  3 13:19:17 oss1 kernel: [<ffffffff8109aee6>] kthread+0x96/0xa0
Mar  3 13:19:17 oss1 kernel: [<ffffffff8100c20a>] child_rip+0xa/0x20
Mar  3 13:19:17 oss1 kernel: [<ffffffff8109ae50>] ? kthread+0x0/0xa0
Mar  3 13:19:17 oss1 kernel: [<ffffffff8100c200>] ? child_rip+0x0/0x20
Mar  3 13:19:17 oss1 kernel: Code: 8b 83 48 02 00 00 49 89 44 24 10 48 8b 83 48 02 00 00 f6 80 4d 01 00 00 02 0f 85 4f 03 00 00 49 c7 84 24 88 00 00 00 00 00 00 00 <41> 8b 47 1c 48 89 df 89 45 c4 41 8b 47 18 41 89 84 24 80 00 00 
Mar  3 13:19:17 oss1 kernel: RIP  [<ffffffffa15db6a5>] tgt_request_handle+0x125/0xac0 [ptlrpc]
Mar  3 13:19:17 oss1 kernel: RSP <ffff8800287f7d50>
Mar  3 13:19:17 oss1 kernel: CR2: 000000000000001c
Mar  3 13:19:17 oss1 kernel: ---[ end trace be0e3de8467532c8 ]---

Issue Links

• is duplicated by: LU-5677 unable to handle kernel NULL pointer in tgt_request_handle