Max Filippov 6ac5a11dc6 xtensa: fix high memory/reserved memory collision ... Xtensa memory initialization code frees high memory pages without checking whether they are in the reserved memory regions or not. That results in invalid value of totalram_pages and duplicate page usage by CMA and highmem. It produces a bunch of BUGs at startup looking like this: BUG: Bad page state in process swapper pfn:70800 page:be60c000 count:0 mapcount:-127 mapping: (null) index:0x1 flags: 0x80000000() raw: 80000000 00000000 00000001 ffffff80 00000000 be60c014 be60c014 0000000a page dumped because: nonzero mapcount Modules linked in: CPU: 0 PID: 1 Comm: swapper Tainted: G B 4.16.0-rc1-00015-g7928b2cbe55b-dirty #23 Stack: bd839d33 00000000 00000018 ba97b64c a106578c bd839d70 be60c000 00000000 a1378054 bd86a000 00000003 ba97b64c a1066166 bd839da0 be60c000 ffe00000 a1066b58 bd839dc0 be504000 00000000 000002f4 bd838000 00000000 0000001e Call Trace: [<a1065734>] bad_page+0xac/0xd0 [<a106578c>] free_pages_check_bad+0x34/0x4c [<a1066166>] __free_pages_ok+0xae/0x14c [<a1066b58>] __free_pages+0x30/0x64 [<a1365de5>] init_cma_reserved_pageblock+0x35/0x44 [<a13682dc>] cma_init_reserved_areas+0xf4/0x148 [<a10034b8>] do_one_initcall+0x80/0xf8 [<a1361c16>] kernel_init_freeable+0xda/0x13c [<a125b59d>] kernel_init+0x9/0xd0 [<a1004304>] ret_from_kernel_thread+0xc/0x18 Only free high memory pages that are not reserved. Cc: stable@vger.kernel.org Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>		2018-02-15 09:46:42 -08:00
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alpha	pci-v4.16-changes	2018-02-06 09:59:40 -08:00
arc	The core framework has a handful of patches this time around, mostly due	2018-02-01 16:56:07 -08:00
arm	KVM changes for 4.16	2018-02-10 13:16:35 -08:00
arm64	KVM changes for 4.16	2018-02-10 13:16:35 -08:00
blackfin	unify {de,}mangle_poll(), get rid of kernel-side POLL...	2018-02-11 14:37:22 -08:00
c6x	The core framework has a handful of patches this time around, mostly due	2018-02-01 16:56:07 -08:00
cris	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
frv	unify {de,}mangle_poll(), get rid of kernel-side POLL...	2018-02-11 14:37:22 -08:00
h8300	The core framework has a handful of patches this time around, mostly due	2018-02-01 16:56:07 -08:00
hexagon	The core framework has a handful of patches this time around, mostly due	2018-02-01 16:56:07 -08:00
ia64	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
m32r	The core framework has a handful of patches this time around, mostly due	2018-02-01 16:56:07 -08:00
m68k	unify {de,}mangle_poll(), get rid of kernel-side POLL...	2018-02-11 14:37:22 -08:00
metag	The core framework has a handful of patches this time around, mostly due	2018-02-01 16:56:07 -08:00
microblaze	Microblaze patches for 4.16-rc1	2018-02-02 09:48:36 -08:00
mips	unify {de,}mangle_poll(), get rid of kernel-side POLL...	2018-02-11 14:37:22 -08:00
mn10300	The core framework has a handful of patches this time around, mostly due	2018-02-01 16:56:07 -08:00
nios2	nios2 update for v4.16-rc1	2018-02-11 13:52:32 -08:00
openrisc	The core framework has a handful of patches this time around, mostly due	2018-02-01 16:56:07 -08:00
parisc	The core framework has a handful of patches this time around, mostly due	2018-02-01 16:56:07 -08:00
powerpc	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
riscv	RISC-V changes for 4.16	2018-02-07 11:33:08 -08:00
s390	KVM changes for 4.16	2018-02-10 13:16:35 -08:00
score	arch/score/kernel/setup.c: combine two seq_printf() calls into one call in show_cpuinfo()	2018-02-06 18:32:47 -08:00
sh	libnvdimm for 4.16	2018-02-06 10:41:33 -08:00
sparc	unify {de,}mangle_poll(), get rid of kernel-side POLL...	2018-02-11 14:37:22 -08:00
tile	The core framework has a handful of patches this time around, mostly due	2018-02-01 16:56:07 -08:00
um	mconsole_proc(): don't mess with file->f_pos	2018-02-09 19:28:01 -08:00
unicore32	lib: optimize cpumask_next_and()	2018-02-06 18:32:44 -08:00
x86	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
xtensa	xtensa: fix high memory/reserved memory collision	2018-02-15 09:46:42 -08:00
.gitignore
Kconfig	Makefile: introduce CONFIG_CC_STACKPROTECTOR_AUTO	2018-02-06 18:32:44 -08:00