stack_trace.log

[  389.256897] BUG: unable to handle kernel NULL pointer dereference at 00000008
[  389.256897] IP: [<c1301ae1>] rb_next+0x1/0x40
[  389.256897] *pdpt = 0000000026b97001 *pde = 0000000000000000 
[  389.256897] Oops: 0000 [#1] SMP 
[  389.256897] Modules linked in: testmodule(OX) nfsv3 radeon nfsd auth_rpcgss nfs_acl nfs bnep rfcomm bluetooth lockd sunrpc ttm fscache drm_kms_helper drm gpio_ich dcdbas i2c_alge
[  389.256897] CPU: 3 PID: 1727 Comm: npu_work Tainted: G        W  OX 3.13.11-ckt15+ #105
[  389.256897] Hardware name: Dell Computer Corporation PowerEdge 2850/0T7971, BIOS A06 10/03/2006
[  389.256897] task: eed48e70 ti: e75d8000 task.ti: e75d8000
[  389.256897] EIP: 0060:[<c1301ae1>] EFLAGS: 00010046 CPU: 3
[  389.256897] EIP is at rb_next+0x1/0x40
[  389.256897] EAX: 00000008 EBX: f6bb43c8 ECX: 00000006 EDX: 00000007
[  389.256897] ESI: 00000000 EDI: 00000000 EBP: e75d9d40 ESP: e75d9d1c
[  389.256897]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[  389.256897] CR0: 8005003b CR2: 00000008 CR3: 274d5000 CR4: 000007f0
[  389.256897] Stack:
[  389.256897]  e75d9d40 c108b750 c18047e8 ffffffff ffffffff f6bb4380 eed49084 c164bb40
[  389.256897]  00000000 e75d9dc4 c1631e5c f6b983f0 eed48ee0 00000001 00000001 e75d9da8
[  389.256897]  c1a59380 f6b98940 c1a59380 f6bb4380 eed48e70 eed48e70 0000005a e75d9da0
[  389.256897] Call Trace:
[  389.256897]  [<c108b750>] ? pick_next_task_fair+0xf0/0x140
[  389.256897]  [<c1631e5c>] __schedule+0x4fc/0x710
[  389.256897]  [<c100fcc7>] ? __switch_to+0xc7/0x370
[  389.256897]  [<c1631bb1>] ? __schedule+0x251/0x710
[  389.256897]  [<c1632123>] schedule+0x23/0x60
[  389.256897]  [<c1631435>] schedule_timeout+0x185/0x1e0
[  389.256897]  [<c1083e48>] ? ttwu_do_activate.constprop.99+0x58/0x70
[  389.256897]  [<c1086232>] ? try_to_wake_up+0x182/0x210
[  389.256897]  [<c1632f65>] wait_for_completion+0x85/0x100
[  389.256897]  [<c10862c0>] ? try_to_wake_up+0x210/0x210
[  389.256897]  [<c10d15b4>] stop_one_cpu+0x44/0x60
[  389.256897]  [<c1083b30>] ? deactivate_task+0x30/0x30
[  389.256897]  [<c1081d74>] migrate_to_call+0x24/0x40
[  389.256897]  [<f850d340>] host_stub_generic+0x140/0x210 [testmodule]
[  389.256897]  [<c162007b>] ? rfkill_alloc+0x8b/0x100
[  389.256897]  [<f850dd51>] host_add+0x61/0x310 [testmodule]
[  389.256897]  [<f850d3ff>] host_stub_generic+0x1ff/0x210 [testmodule]
[  389.256897]  [<f850d410>] ? host_stub_generic+0x210/0x210 [testmodule]
[  389.256897]  [<f850d473>] kthread_fn_npu_work+0x63/0xc0 [testmodule]
[  389.256897]  [<c1078b0b>] kthread+0x9b/0xb0
[  389.256897]  [<c163ca77>] ret_from_kernel_thread+0x1b/0x28
[  389.256897]  [<c1078a70>] ? flush_kthread_worker+0x90/0x90