** Information type changed from Proprietary to Public
** Also affects: linux (Ubuntu Artful)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Artful)
Status: New => Fix Released
** Changed in: intel
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1704317
Title:
[Bug] Crystal Ridge - 4.12 - libnvdimm, pmem: fix a NULL pointer BUG
in nd_pmem_notify
Status in intel:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Artful:
Fix Released
Bug description:
Description:
The following BUG was observed when nd_pmem_notify() was called
for a BTT device. The use of a pmem_device pointer is not valid
with BTT.
BUG: unable to handle kernel NULL pointer dereference at 0000000000000030
IP: nd_pmem_notify+0x30/0xf0 [nd_pmem]
Call Trace:
nd_device_notify+0x40/0x50
child_notify+0x10/0x20
device_for_each_child+0x50/0x90
nd_region_notify+0x20/0x30
nd_device_notify+0x40/0x50
nvdimm_region_notify+0x27/0x30
acpi_nfit_scrub+0x341/0x590 [nfit]
process_one_work+0x197/0x450
worker_thread+0x4e/0x4a0
kthread+0x109/0x140
Fix nd_pmem_notify() by setting nd_region and badblocks pointers
properly for BTT.
Target Kernel:4.12
Target Release: 17.10
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