Public bug reported: Hi!
After connecting to an iSCSI-target from a DomU, I get this: [80430.277429] scsi0 : iSCSI Initiator over TCP/IP [80430.561802] Unable to handle kernel NULL pointer dereference at 0000000000000078 RIP: [80430.561809] [<ffffffff880c0f15>] :scsi_mod:scsi_calculate_bounce_limit+0x15/0x60 [80430.561826] PGD 3e60b067 PUD 3e60d067 PMD 0 [80430.561831] Oops: 0000 [1] SMP [80430.561834] CPU 0 [80430.561836] Modules linked in: crc32c libcrc32c nfs lockd sunrpc ib_iser rdma_cm iw_cm ib_addr ib_cm ib_sa ib_mad ib_core iscsi_tcp libiscsi scsi_transport_iscsi scsi_mod af_packet evdev pcspkr ipv6 8250 serial_core ext3 jbd mbcache dm_mod [80430.561858] Pid: 3207, comm: iscsid Not tainted 2.6.19-4-generic-amd64 #2 [80430.561860] RIP: e030:[<ffffffff880c0f15>] [<ffffffff880c0f15>] :scsi_mod:scsi_calculate_bounce_limit+0x15/0x60 [80430.561871] RSP: e02b:ffff88003e439ba0 EFLAGS: 00010246 [80430.561873] RAX: 0000000000000000 RBX: ffff880001326048 RCX: 0000000000000067 [80430.561876] RDX: 0000000000000071 RSI: 0000000000000400 RDI: ffff88003ef63000 [80430.561879] RBP: ffff88003ef63000 R08: 00000000fffffffe R09: 0000000000000003 [80430.561881] R10: ffff88003e47b600 R11: 00000000000001f8 R12: ffff88003ee83028 [80430.561884] R13: ffff88003ef63000 R14: 0000000000000000 R15: 0000000000000001 [80430.561889] FS: 00002b77a8bb66f0(0000) GS:ffffffff8053b000(0000) knlGS:0000000000000000 [80430.561892] CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b [80430.561894] CR2: 0000000000000000 CR3: 000000003e4c6000 CR4: 0000000000002660 [80430.561897] Process iscsid (pid: 3207, threadinfo ffff88003e438000, task ffff8800006a1180) [80430.561899] Stack: ffffffff880c1795 ffff88003e47c800 ffff88003e47c800 ffff88003ee83000 [80430.561906] ffffffff880c391d ffff88003ef63170 00000001880bc2e1 ffff88003ef63000 [80430.561910] 0000000000000000 0000000000000000 0000000000000000 00000000ffffffff [80430.561915] Call Trace: [80430.561923] [<ffffffff880c1795>] :scsi_mod:scsi_alloc_queue+0x65/0xc0 [80430.561933] [<ffffffff880c391d>] :scsi_mod:scsi_alloc_sdev+0x12d/0x1e0 [80430.561942] [<ffffffff880c3b96>] :scsi_mod:scsi_probe_and_add_lun+0x116/0xab0 [80430.561949] [<ffffffff804280b7>] klist_add_tail+0x27/0x60 [80430.561955] [<ffffffff880e5424>] :scsi_transport_iscsi:iscsi_host_match+0x14/0x70 [80430.561959] [<ffffffff8025fc32>] kobject_get+0x12/0x20 [80430.561963] [<ffffffff80386a47>] get_device+0x17/0x30 [80430.561971] [<ffffffff880c48dd>] :scsi_mod:scsi_alloc_target+0x25d/0x360 [80430.561981] [<ffffffff880c4b7c>] :scsi_mod:__scsi_scan_target+0xec/0x6b0 [80430.561986] [<ffffffff8026d009>] do_page_fault+0xec9/0x12d0 [80430.561990] [<ffffffff8021488c>] filemap_nopage+0x19c/0x370 [80430.561993] [<ffffffff80337db9>] vsscanf+0x119/0x690 [80430.561997] [<ffffffff80252b79>] sscanf+0x49/0x60 [80430.562006] [<ffffffff880c54d0>] :scsi_mod:scsi_scan_target+0x80/0xc0 [80430.562011] [<ffffffff880e5845>] :scsi_transport_iscsi:iscsi_user_scan+0x75/0xb0 [80430.562020] [<ffffffff880c5fb0>] :scsi_mod:store_scan+0xb0/0x110 [80430.562025] [<ffffffff802ff752>] sysfs_write_file+0xd2/0x120 [80430.562028] [<ffffffff80217d4e>] vfs_write+0xde/0x1a0 [80430.562031] [<ffffffff80218843>] sys_write+0x53/0x90 [80430.562035] [<ffffffff80265a86>] system_call+0x86/0x8b [80430.562037] [<ffffffff80265a00>] system_call+0x0/0x8b [80430.562040] [80430.562041] [80430.562042] Code: 8b 40 78 85 c0 75 0c 48 8b 05 c5 3c 51 f8 48 c1 e0 0c c3 48 [80430.562055] RIP [<ffffffff880c0f15>] :scsi_mod:scsi_calculate_bounce_limit+0x15/0x60 [80430.562065] RSP <ffff88003e439ba0> [80430.562066] CR2: 0000000000000078 Dom0 and DomU are running feisty with linux-image-2.6.19-4-generic-amd64. The iSCSI-Target is an openfiler-2.2 xen appliance. This thread claims there is a fix out there, but I could not find it yet: http://groups.google.com/group/open-iscsi/browse_thread/thread/c4ddd07c06546864 Ciao Martin ** Affects: xen-source (Ubuntu) Importance: Undecided Status: New -- Connecting to iscsi-target from DomU results in kernel error https://bugs.launchpad.net/bugs/138894 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
