Attachment 7939 Details for Bug 42099

d_lookup (fs/dcache.c:2170)

42099-oops-omar-2016-08-29.txt (text/plain), 5.02 KB, created by Philipp Hahn on 2016-08-29 14:12 CEST

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Creator: Philipp Hahn

Created: 2016-08-29 14:12 CEST

Size: 5.02 KB

patch

obsolete

>[414908.259339] general protection fault: 0000 [#1] SMP
>[414908.263293] Modules linked in: nfsv4 dns_resolver nfsv3 btrfs raid6_pq xor crc32c_generic ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi rpcsec_gss_krb5 nfsd nfs_acl auth_rpcgss nfs fscache lockd sunrpc quota_v2 quota_tree e752x_edac lpc_ich edac_core mfd_core shpchp processor rng_core psmouse i2c_i801 i2c_core thermal_sys tpm_tis tpm pcspkr serio_raw evdev ext4 jbd2 crc16 dm_snapshot dm_bufio dm_mirror dm_region_hash dm_log dm_mod sd_mod crc_t10dif crct10dif_common sg sr_mod cdrom ata_generic ehci_pci e1000 uhci_hcd ata_piix ehci_hcd mptspi mptscsih floppy libata mptbase usbcore scsi_transport_spi button usb_common
>[414908.263293] CPU: 1 PID: 1464 Comm: nfsd Not tainted 3.16.0-ucs193-amd64 #1 Debian 3.16.7-ckt25-2~bpo70+1~ucs3.3.193.201604181018
>[414908.263293] Hardware name: FUJITSU SIEMENS PRIMERGY RX200S2/D1790/M73IL, BIOS 6.0 Rev. R04A5F5.1790 01/16/2006
>[414908.263293] task: ffff8800cae7f330 ti: ffff8800cae80000 task.ti: ffff8800cae80000
>[414908.263293] RIP: __d_lookup (fs/dcache.c:2226) 
>[414908.263293] RSP: 0018:ffff8800cae83bf8  EFLAGS: 00010206
>[414908.263293] RAX: ffffc900003f2160 RBX: 00011ac400000000 RCX: 000000000000000d
>[414908.263293] RDX: ffffc90000005000 RSI: ffff8800cae83cd8 RDI: ffff88011c38b6d8
>[414908.263293] RBP: ffff88011c38b6d8 R08: 000000000000000b R09: 000000000000000c
>[414908.263293] R10: 0000000000000004 R11: ffff880109ad2300 R12: ffff8800cae83cd8
>[414908.263293] R13: 0000000000000030 R14: 00000000e1b5a97e R15: ffff8801046a10b0
>[414908.263293] FS:  0000000000000000(0000) GS:ffff880127c80000(0000) knlGS:0000000000000000
>[414908.263293] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
>[414908.263293] CR2: ffffffffff600400 CR3: 00000000c4a35000 CR4: 00000000000007e0
>[414908.263293] Stack:
>[414908.263293]  ffff8800cfd61200 ffff8801046a10b0 ffff8800cae7f330 00000000000e1bbe
>[414908.263293]  ffff8800cae83cd8 ffff88011c38b6d8 ffff8800cae83cb7 0000000000000000
>[414908.263293]  ffff8801046a10b0 ffffffff811d3913 0000000000000000 ffff88011c38b6d8
>[414908.263293] Call Trace:
>[414908.263293] ? d_lookup (fs/dcache.c:2170) 
>[414908.263293] ? lookup_dcache (fs/namei.c:1319) 
>[414908.263293] ? __lookup_hash (fs/namei.c:1376) 
>[414908.263293] ? lookup_one_len (fs/namei.c:2158) 
>[414908.263293] ? nfsd_lookup_dentry (fs/nfsd/vfs.c:218) nfsd
>[414908.263293] ? nfsd_lookup (fs/nfsd/vfs.c:263) nfsd
>[414908.263293] ? svcauth_unix_set_client (net/sunrpc/svcauth_unix.c:716) sunrpc
>[414908.263293] ? nfsd3_proc_lookup (fs/nfsd/nfs3proc.c:101) nfsd
>[414908.263293] ? nfsd_dispatch (fs/nfsd/nfssvc.c:638 fs/nfsd/nfssvc.c:690) nfsd
>[414908.263293] ? svc_process_common (net/sunrpc/svc.c:1206) sunrpc
>[414908.263293] ? nfsd_destroy (fs/nfsd/nfssvc.c:566) nfsd
>[414908.263293] ? svc_process (net/sunrpc/svc.c:1331) sunrpc
>[414908.263293] ? nfsd (fs/nfsd/nfssvc.c:612) nfsd
>[414908.263293] ? kthread (kernel/kthread.c:207) 
>[414908.263293] ? flush_kthread_worker (kernel/kthread.c:176) 
>[414908.263293] ? ret_from_fork (arch/x86/kernel/entry_64S:352) 
>[414908.263293] ? flush_kthread_worker (kernel/kthread.c:176) 
>[414908.263293] Code: f8 48 c1 e8 06 44 01 f0 69 c0 01 00 37 9e d3 e8 48 8d 04 c2 48 8b 18 48 83 e3 fe 75 0e eb 34 0f 1f 40 00 48 8b 1b 48 85 db 74 28 <44> 39 73 18 75 f2 4c 8d 7b 50 4c 89 ff e8 76 e8 39 00 48 39 6b
>All code
>========
>   0:   f8                      clc    
>   1:   48 c1 e8 06             shr    $0x6,%rax
>   5:   44 01 f0                add    %r14d,%eax
>   8:   69 c0 01 00 37 9e       imul   $0x9e370001,%eax,%eax
>   e:   d3 e8                   shr    %cl,%eax
>  10:   48 8d 04 c2             lea    (%rdx,%rax,8),%rax
>  14:   48 8b 18                mov    (%rax),%rbx
>  17:   48 83 e3 fe             and    $0xfffffffffffffffe,%rbx
>  1b:   75 0e                   jne    0x2b
>  1d:   eb 34                   jmp    0x53
>  1f:   0f 1f 40 00             nopl   0x0(%rax)
>  23:   48 8b 1b                mov    (%rbx),%rbx
>  26:   48 85 db                test   %rbx,%rbx
>  29:   74 28                   je     0x53
>  2b:*  44 39 73 18             cmp    %r14d,0x18(%rbx)         <-- trapping instruction
>  2f:   75 f2                   jne    0x23
>  31:   4c 8d 7b 50             lea    0x50(%rbx),%r15
>  35:   4c 89 ff                mov    %r15,%rdi
>  38:   e8 76 e8 39 00          callq  0x39e8b3
>  3d:   48                      rex.W
>  3e:   39                      .byte 0x39
>  3f:   6b                      .byte 0x6b
>
>Code starting with the faulting instruction
>===========================================
>   0:   44 39 73 18             cmp    %r14d,0x18(%rbx)
>   4:   75 f2                   jne    0xfffffffffffffff8
>   6:   4c 8d 7b 50             lea    0x50(%rbx),%r15
>   a:   4c 89 ff                mov    %r15,%rdi
>   d:   e8 76 e8 39 00          callq  0x39e888
>  12:   48                      rex.W
>  13:   39                      .byte 0x39
>  14:   6b                      .byte 0x6b
>[414908.263293] RIP __d_lookup (fs/dcache.c:2226) 
>[414908.263293]  RSP <ffff8800cae83bf8>
>[414908.746026] ---[ end trace 2b2970d77ac95af2 ]---

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