Linux kernel faulty on unmap_single on Exadata compute nodes (Doc ID 1514687.1)

Last updated on SEPTEMBER 05, 2016

Applies to:

Exadata Database Machine X2-2 Full Rack - Version All Versions to All Versions [Release All Releases]
Exadata Database Machine X2-2 Half Rack - Version All Versions to All Versions [Release All Releases]
Exadata Database Machine X2-2 Qtr Rack - Version All Versions to All Versions [Release All Releases]
Exadata Database Machine V2 - Version All Versions to All Versions [Release All Releases]
Oracle Exadata Hardware - Version 11.2.0.2 to 11.2.0.3 [Release 11.2]
x86 64 bit

Symptoms

Buffer I/O error on device sdb, logical block 0
scsi 13:0:0:0: rejecting I/O to dead device
Buffer I/O error on device sdb, logical block 0
 unable to read partition table
RDS/IB: connected to 172.16.3.16 version 3.1
RPC: bad TCP reclen 0x00000000 (non-terminal)
RPC: bad TCP reclen 0x00000000 (non-terminal)
RPC: bad TCP reclen 0x00000000 (non-terminal)
RPC: bad TCP reclen 0x00000000 (non-terminal)
Unable to handle kernel paging request at ffff80fd41180640 RIP:
 [<ffffffff8007e582>] unmap_single+0x24/0xc6
PGD 0
Oops: 0000 [1] SMP
last sysfs file: /class/infiniband_mad/umad0/port
CPU 4
Modules linked in: sr_mod cdrom oracleacfs(PFU) oracleadvm(PFU) oracleoks(PU) nfs lockd fscache nfs_acl krg_8_5_0_3005(PFU) ipmi_poweroff ipmi_watchdog ipmi_devintf ipmi_si(U) ipmi_msghandler sunrpc bonding(U) iscsi_tcp libiscsi scsi_transport_iscsi rds(U) ib_ipoib(U) ipoib_helper(U) ipv6 xfrm_nalgo crypto_api rdma_ucm(U) rdma_cm(U) ib_ucm(U) ib_uverbs(U) ib_umad(U) ib_cm(U) iw_cm(U) ib_addr(U) ib_sa(U) dm_mirror dm_log dm_multipath scsi_dh dm_mod video hwmon backlight sbs i2c_ec button battery asus_acpi acpi_memhotplug ac fuse(U) parport_pc lp parport mlx4_ib(U) ib_mad(U) ib_core(U) sg joydev shpchp ahci mlx4_core(U) igb i2c_i801 i2c_core pcspkr usb_storage ata_piix libata cciss(U) megaraid_sas(U) sd_mod scsi_mod ext3 jbd ehci_hcd ohci_hcd uhci_hcd
Pid: 11092, comm: oracle Tainted: PF     2.6.18-128.1.16.0.1.el5 #1
RIP: 0010:[<ffffffff8007e582>]  [<ffffffff8007e582>] unmap_single+0x24/0xc6
RSP: 0018:ffff81048fb23cd8  EFLAGS: 00010202
RAX: ffff8100190c1000 RBX: 00000000ceba0300 RCX: 0000000000000000
RDX: ffffffffa5017ec8 RSI: 41e9f62821005000 RDI: ffff81127ff18870
RBP: 00083d4ea5017ec8 R08: ffff810009000000 R09: 00007f0000000000
R10: 0000000000000000 R11: 0000000000000046 R12: 0000000000000000
R13: 000000000000003d R14: ffff81127ff18870 R15: 0000000000000000
FS:  00002b9ac7839e60(0000) GS:ffff810140de5d40(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: ffff80fd41180640 CR3: 0000000fd9ac0000 CR4: 00000000000006a0
Process oracle (pid: 11092, threadinfo ffff81048fb22000, task ffff810a66e4a820)
Stack:  0000000000000286 ffff8103561da000 0000000000000000 ffffffff80150a56
 ffff8112422b7840 ffff81126dcc3cc0 ffff8112422b7858 ffff81125642d1c0
 000000000000014a ffffffff8848da6f ffff8112422b7840 ffff81126dcc3cc0
Call Trace:
 [<ffffffff80150a56>] swiotlb_unmap_sg+0xba/0x126
 [<ffffffff8848da6f>] :rds:__rds_ib_teardown_mr+0x3d/0xa3
 [<ffffffff8848dca1>] :rds:rds_ib_flush_mr_pool+0x1cc/0x2c7
 [<ffffffff8848ddb6>] :rds:rds_ib_flush_mrs+0x1a/0x2e
 [<ffffffff8848475f>] :rds:rds_release+0x70/0xe5
 [<ffffffff80055562>] sock_release+0x19/0x9a
 [<ffffffff8005575d>] sock_close+0x2c/0x30
 [<ffffffff80012e22>] __fput+0xae/0x198
 [<ffffffff80023de6>] filp_close+0x5c/0x64
 [<ffffffff8001e333>] sys_close+0x88/0xbd
 [<ffffffff885e7b66>] :krg_8_5_0_3005:_close_origcode+0x78/0x1e2
 [<ffffffff885e3b6a>] :krg_8_5_0_3005:_close_postcode+0x0/0x229
 [<ffffffff885df7a1>] :krg_8_5_0_3005:syscall_wrappers_generic_flow+0x1f6/0x514
 [<ffffffff885e7aee>] :krg_8_5_0_3005:_close_origcode+0x0/0x1e2
 [<ffffffff885dfd8c>] :krg_8_5_0_3005:SYS_close_common_wrap+0x46/0xed
 [<ffffffff885e1588>] :krg_8_5_0_3005:SYS_close_wrap64+0x25/0x41
 [<ffffffff8005e28d>] tracesys+0xd5/0xe0
# imageinfo
Kernel version: 2.6.18-128.1.16.0.1.el5 #1 SMP Tue Jun 30 16:48:30 EDT 2009 x86_64
Image version: 11.2.2.4.2.111221
Image activated: 2012-04-15 13:12:42 -0500
Image status: success
System partition on device: /dev/sda1

# rpm -qa|grep ofa
ofa-2.6.18-128.1.16.0.1.el5-1.4.2-14

 

Cause

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