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| author | Toshi Kani <toshi.kani@hpe.com> | 2017-04-26 02:04:13 +0300 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2017-04-28 22:46:47 +0300 |
| commit | b2518c78ce76896f0f8f7940bf02104b227e1709 (patch) | |
| tree | 9b8cfee35090df0d14df0e9e4ad20f3ff1d53cdc /drivers/nvdimm/e820.c | |
| parent | ab630891ce0eb83dc6c37971b35b228fc9e225ca (diff) | |
| download | linux-b2518c78ce76896f0f8f7940bf02104b227e1709.tar.xz | |
libnvdimm, pmem: fix a NULL pointer BUG in nd_pmem_notify
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.
Cc: <stable@vger.kernel.org>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Fixes: 719994660c24 ("libnvdimm: async notification support")
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm/e820.c')
0 files changed, 0 insertions, 0 deletions