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e07ecd76d4
When btt devices were re-worked to be child devices of regions this routine was overlooked. It mistakenly attempts to_nd_namespace_pmem() or to_nd_namespace_blk() conversions on btt and pfn devices. By luck to date we have happened to be hitting valid memory leading to a uuid miscompare, but a recent change to struct nd_namespace_common causes: BUG: unable to handle kernel NULL pointer dereference at 0000000000000001 IP: [<ffffffff814610dc>] memcmp+0xc/0x40 [..] Call Trace: [<ffffffffa0028631>] is_uuid_busy+0xc1/0x2a0 [libnvdimm] [<ffffffffa0028570>] ? to_nd_blk_region+0x50/0x50 [libnvdimm] [<ffffffff8158c9c0>] device_for_each_child+0x50/0x90 Cc: <stable@vger.kernel.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com> |
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| .. | ||
| blk.c | ||
| btt_devs.c | ||
| btt.c | ||
| btt.h | ||
| bus.c | ||
| claim.c | ||
| core.c | ||
| dimm_devs.c | ||
| dimm.c | ||
| e820.c | ||
| Kconfig | ||
| label.c | ||
| label.h | ||
| Makefile | ||
| namespace_devs.c | ||
| nd-core.h | ||
| nd.h | ||
| pfn_devs.c | ||
| pfn.h | ||
| pmem.c | ||
| region_devs.c | ||
| region.c | ||