On 05/10/2011 08:48 AM, iilluzion wrote:
[251507.006803] BUG: unable to handle kernel NULL pointer dereference
at 00000068
[251507.007103] IP: [<f803e393>] show_proc_name+0x9/0x1b [scsi_mod]

I am not hitting the problem here. The sht and proc name should be set when we allocate the host, so before it is even exported in sysfs.

Is this just a kernel.org kernel but with some vmware modules? Has this worked with older kernels?

For the other scsi/sata drivers in your setup if you just do

cat /sys/class/scsi_host/hostXYX/proc_name does it work?

Could you also send me your kernel .config.

[251507.007294] *pde = 00000000
[251507.007430] Oops: 0000 [#18] SMP
[251507.007577] last sysfs file: /sys/devices/platform/host5/scsi_host/
[251507.007868] Modules linked in: md4 hmac nls_iso8859_1 cifs crc32c
iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi xt_time
xt_connlimit xt_realm iptable_raw xt_comment xt_policy ipt_ULOG
_MASQUERADE ipt_LOG ipt_ECN ipt_ecn ipt_CLUSTERIP ipt_ah ipt_addrtype
nf_nat_tftp nf_nat_snmp_basic nf_nat_sip nf_nat_pptp nf_nat_proto_gre
nf_nat_irc nf_nat_h323 nf_nat_ftp nf_nat_amanda ts_kmp
nf_conntrack_amanda nf_conntrack_sane
nf_conntrack_tftp nf_conntrack_sip nf_conntrack_proto_sctp
nf_conntrack_pptp nf_conntrack_proto_gre nf_conntrack_netlink
nf_conntrack_netbios_ns nf_conntrack_irc nf_conntrack_h323
nf_conntrack_ftp xt_tcpmss xt_recent xt_pkttype xt_ph
ysdev xt_owner xt_NFQUEUE xt_NFLOG nfnetlink_log xt_multiport xt_mark
xt_mac xt_limit xt_length xt_iprange xt_helper xt_hashlimit xt_DSCP
xt_dscp xt_dccp xt_conntrack xt_connmark xt_CLASSIFY xt_tcpudp
xt_state iptable_nat nf_nat nf_c
onntrack_ipv4 nf_defrag_ipv4 nf_conntrack iptable_mangle nfnetlink
iptable_filter ip_tables x_tables xfs exportfs af_packet psmouse
serio_raw snd_pcsp snd_pcm snd_page_alloc snd_timer snd soundcore
shpchp pci_hotplug pcnet32 mii evde
v rtc_cmos rtc_core rtc_lib container parport_pc parport processor ac
fbcon font bitblit fbcon_rotate fbcon_ccw fbcon_ud fbcon_cw softcursor
tileblit fb fbdev sr_mod cdrom intel_agp intel_gtt agpgart i2c_piix4
i2c_core ata_piix ata_g
eneric pata_acpi libata mptspi mptscsih mptbase scsi_transport_spi
floppy button cramfs loop ext3 mbcache jbd usb_storage usb_libusual
usbcore nls_base sd_mod scsi_mod
[251507.011844] Pid: 6278, comm: iscsiadm Tainted: G      D #2 VMware, Inc. VMware Virtual Platform
[251507.012234] EIP: 0060:[<f803e393>] EFLAGS: 00210292 CPU: 0
[251507.012380] EIP is at show_proc_name+0x9/0x1b [scsi_mod]
[251507.012512] EAX: 00000000 EBX: f80452e4 ECX: f589b000 EDX:
[251507.012653] ESI: fffffffb EDI: f803e38a EBP: f529bf2c ESP:
[251507.012798]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[251507.012930] Process iscsiadm (pid: 6278, ti=f529a000 task=f5801c80
[251507.013161] Stack:
[251507.013256]  f529bf40 c115e723 f596e500 f50f62a0 c124e2dc f529bf6c
c10d2900 00000100
[251507.013501]  00000100 bf96e28c c1093f40 c124e2dc f596e514 00000100
f50d8b40 bf96e28c
[251507.013745]  f529bf8c c109427e f529bf98 c10d2881 f4d799e0 f50d8b40
fffffff7 b7d93e8c
[251507.013985] Call Trace:
[251507.014093]  [<c115e723>] dev_attr_show+0x19/0x36
[251507.014219]  [<c10d2900>] sysfs_read_file+0x7f/0xf1
[251507.014348]  [<c1093f40>] ? rw_verify_area+0xc4/0xe7
[251507.014479]  [<c109427e>] vfs_read+0x86/0xf1
[251507.014598]  [<c10d2881>] ? sysfs_read_file+0x0/0xf1
[251507.014729]  [<c1094324>] sys_read+0x3b/0x60
[251507.014852]  [<c122ee11>] syscall_call+0x7/0xb
[251507.014972] Code: 6a 14 51 e8 68 11 0c c9 c9 c3 55 89 e5 ff b0 18
ff ff ff 68 1a 28 04 f8 6a 14 51 e8 50 11 0c c9 c9 c3 55 8b 80 a4 fe
ff ff 89 e5<ff>  70 68 68 1e 28 04 f8 6a 14 51 e8 35 11 0c c9 c9 c3 55
8a 80
[251507.015502] EIP: [<f803e393>] show_proc_name+0x9/0x1b [scsi_mod]
SS:ESP 0068:f529bf2c
[251507.015744] CR2: 0000000000000068
[251507.016179] ---[ end trace 33d79edf59f24953 ]---

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