PWN-Hunter/android_kernel_xiaomi_sdm845
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x86, 32-bit: SRAT fix

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we were adding reserved BIOS ranges as general memory as well => not good.

solves this crash:

[   20.068075] hostname used greatest stack depth: 6464 bytes left
[   20.121404] BUG: unable to handle kernel <1>BUG: unable to handle kernel NULL pointer dereference at 00000b8c
[   20.121404] IP: [<c01160ae>] kmap_atomic_prot+0x2d/0x1c3
[   20.121404] *pdpt = 00000000367eb001 *pde = 0000000000000000
[   20.121404] Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
[   20.121404]
[   20.121404] Pid: 2061, comm: rc.sysinit Not tainted (2.6.26-rc3 #2440)
[   20.121404] EIP: 0060:[<c01160ae>] EFLAGS: 00010206 CPU: 0
[   20.121404] EIP is at kmap_atomic_prot+0x2d/0x1c3

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2008-06-06 16:28:23 +02:00
parent c45a707dbe
commit ea57a5a6db
1 changed files with 3 additions and 8 deletions
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11
arch/x86/kernel/srat_32.c
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@ -240,6 +240,7 @@ static int __init acpi20_parse_srat(struct acpi_table_srat *sratp)
for (i = 0; i < MAX_APICID; i++)
apicid_2_node[i] = pxm_to_node(apicid_to_pxm[i]);
remove_all_active_ranges();
for (j = 0; j < num_memory_chunks; j++){
struct node_memory_chunk_s * chunk = &node_memory_chunk[j];
printk("chunk %d nid %d start_pfn %08lx end_pfn %08lx\n",
@ -247,14 +248,8 @@ static int __init acpi20_parse_srat(struct acpi_table_srat *sratp)
node_read_chunk(chunk->nid, chunk);
e820_register_active_regions(chunk->nid, chunk->start_pfn,
min(chunk->end_pfn, max_pfn));
}
for_each_online_node(nid) {
unsigned long start = node_start_pfn[nid];
unsigned long end = node_end_pfn[nid];
memory_present(nid, start, end);
node_remap_size[nid] = node_memmap_size_bytes(nid, start, end);
memory_present(chunk->nid, chunk->start_pfn,
min(chunk->end_pfn, max_pfn));
}
return 1;
out_fail: