Greetings all, iscsiadm has caused kernel NULL pointer dereference, that looks like follows:
[ 29.833228] BUG: unable to handle kernel NULL pointer dereference at 00000000000000d0 [ 29.835268] IP: [<ffffffff81045c29>] __ticket_spin_lock+0x9/0x30 [ 29.836034] PGD 114f15067 PUD 114f14067 PMD 0 [ 29.836034] Oops: 0002 [#1] SMP [ 29.852450] sd 6:0:0:0: Attached scsi generic sg3 type 0 [ 29.852468] scst[2564] scst_register_device[976]: Attached to scsi6, channel 0, id 0, lun 0, type 0 [ 29.852567] sd 4:0:0:0: Attached scsi generic sg4 type 0 [ 29.852578] scst[2565] scst_register_device[976]: Attached to scsi4, channel 0, id 0, lun 0, type 0 [ 29.859101] drm serio_raw sysimgblt sysfillrect virtio_balloon nfsd(OF) nfs_acl syscopyarea auth_rpcgss nfs i2c_piix4 fscache lockd sunrpc mac_hid lp parport floppy ixgbevf [ 29.859101] CPU 1 [ 29.859101] Pid: 2569, comm: iscsiadm Tainted: GF O 3.8.13-030813-generic #201305111843 Bochs Bochs [ 29.859101] RIP: 0010:[<ffffffff81045c29>] [<ffffffff81045c29>] __ticket_spin_lock+0x9/0x30 [ 29.859101] RSP: 0018:ffff880114ca7d98 EFLAGS: 00010206 [ 29.859101] RAX: 0000000000010000 RBX: 00000000000000d0 RCX: 0000000000000001 [ 29.859101] RDX: ffff880115287000 RSI: 0000000000000003 RDI: 00000000000000d0 [ 29.859101] RBP: ffff880114ca7d98 R08: 0000000000000000 R09: 0000000000000c55 [ 29.859101] R10: ffffea000454a1c0 R11: 0000000000000246 R12: 00000000000000d0 [ 29.859101] R13: 0000000000000000 R14: ffff8801157f6438 R15: ffff880115fc8c00 [ 29.859101] FS: 00007f6bbb801700(0000) GS:ffff88011fd00000(0000) knlGS:0000000000000000 [ 29.859101] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.859101] CR2: 00000000000000d0 CR3: 000000011494e000 CR4: 00000000000006e0 [ 29.859101] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.859101] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 29.859101] Process iscsiadm (pid: 2569, threadinfo ffff880114ca6000, task ffff880114e20000) [ 29.859101] Stack: [ 29.859101] ffff880114ca7db8 ffffffff816ed63e ffff88011fffbd80 ffff880115287000 [ 29.859101] ffff880114ca7e28 ffffffffa05d194f ffff88011516bd20 ffff880118bed600 [ 29.859101] 0000000995fdf9ab ffffffff81ef7b20 00000000000080d0 0000000000000000 [ 29.859101] Call Trace: [ 29.859101] [<ffffffff816ed63e>] _raw_spin_lock_bh+0x1e/0x30 [ 29.859101] [<ffffffffa05d194f>] iscsi_sw_tcp_host_get_param+0x6f/0xe0 [iscsi_tcp] [ 29.859101] [<ffffffffa05ab2ac>] show_host_param_ISCSI_HOST_PARAM_IPADDRESS+0x4c/0x60 [scsi_transport_iscsi] [ 29.859101] [<ffffffff8145e7a0>] dev_attr_show+0x20/0x60 [ 29.859101] [<ffffffff81139aae>] ? __get_free_pages+0xe/0x40 [ 29.859101] [<ffffffff8120f736>] fill_read_buffer.isra.8+0x66/0xf0 [ 29.859101] [<ffffffff8120f864>] sysfs_read_file+0xa4/0xc0 [ 29.859101] [<ffffffff8119b4d0>] vfs_read+0xb0/0x180 [ 29.859101] [<ffffffff8119b5f2>] sys_read+0x52/0xa0 [ 29.859101] [<ffffffff816f629d>] system_call_fastpath+0x1a/0x1f [ 29.859101] Code: 00 00 48 c7 c1 31 5a 04 81 48 c7 c2 2e 5a 04 81 e9 dd fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 55 b8 00 00 01 00 48 89 e5 <f0> 0f c1 07 89 c2 c1 ea 10 66 39 c2 74 13 66 0f 1f 84 00 00 00 [ 29.859101] RIP [<ffffffff81045c29>] __ticket_spin_lock+0x9/0x30 [ 29.859101] RSP <ffff880114ca7d98> [ 29.859101] CR2: 00000000000000d0 [ 29.926003] ---[ end trace 3db857a832dd3e91 ]--- Kernel is mainline 3.8.13. Can anybody please advise if this is some known issue and/or how to investigate this further? Thanks, Alex. -- You received this message because you are subscribed to the Google Groups "open-iscsi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/open-iscsi. For more options, visit https://groups.google.com/groups/opt_out.
