https://github.com/torvalds/linux
Revision bfb34527a32a1a576d9bfb7026d3ab0369a6cd60 authored by Dan Williams on 04 February 2017, 22:47:31 UTC, committed by Dan Williams on 04 February 2017, 22:47:31 UTC
When vmemmap_populate() allocates space for the memmap it does so in 2MB
sized chunks. The libnvdimm-pfn driver incorrectly accounts for this
when the alignment of the device is set to 4K. When this happens we
trigger memory allocation failures in altmap_alloc_block_buf() and
trigger warnings of the form:
WARNING: CPU: 0 PID: 3376 at arch/x86/mm/init_64.c:656 arch_add_memory+0xe4/0xf0
[..]
Call Trace:
dump_stack+0x86/0xc3
__warn+0xcb/0xf0
warn_slowpath_null+0x1d/0x20
arch_add_memory+0xe4/0xf0
devm_memremap_pages+0x29b/0x4e0
Fixes: 315c562536c4 ("libnvdimm, pfn: add 'align' attribute, default to HPAGE_SIZE")
Cc: <stable@vger.kernel.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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Tip revision: bfb34527a32a1a576d9bfb7026d3ab0369a6cd60 authored by Dan Williams on 04 February 2017, 22:47:31 UTC
libnvdimm, pfn: fix memmap reservation size versus 4K alignment
libnvdimm, pfn: fix memmap reservation size versus 4K alignment
Tip revision: bfb3452
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| .cocciconfig | -rw-r--r-- | 59 bytes |
| .get_maintainer.ignore | -rw-r--r-- | 31 bytes |
| .gitattributes | -rw-r--r-- | 30 bytes |
| .gitignore | -rw-r--r-- | 1.3 KB |
| .mailmap | -rw-r--r-- | 7.7 KB |
| COPYING | -rw-r--r-- | 18.3 KB |
| CREDITS | -rw-r--r-- | 96.0 KB |
| Kbuild | -rw-r--r-- | 2.8 KB |
| Kconfig | -rw-r--r-- | 252 bytes |
| MAINTAINERS | -rw-r--r-- | 382.5 KB |
| Makefile | -rw-r--r-- | 57.6 KB |
| README | -rw-r--r-- | 722 bytes |
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