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linux/arch/loongarch/kernel
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Huacai Chen b795fb9f58 LoongArch: Set all reserved memblocks on Node#0 at initialization 
After commit 61167ad5fe ("mm: pass nid to reserve_bootmem_region()")
we get a panic if DEFERRED_STRUCT_PAGE_INIT is enabled:

[    0.000000] CPU 0 Unable to handle kernel paging request at virtual address 0000000000002b82, era == 90000000040e3f28, ra == 90000000040e3f18
[    0.000000] Oops[#1]:
[    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 6.5.0+ #733
[    0.000000] pc 90000000040e3f28 ra 90000000040e3f18 tp 90000000046f4000 sp 90000000046f7c90
[    0.000000] a0 0000000000000001 a1 0000000000200000 a2 0000000000000040 a3 90000000046f7ca0
[    0.000000] a4 90000000046f7ca4 a5 0000000000000000 a6 90000000046f7c38 a7 0000000000000000
[    0.000000] t0 0000000000000002 t1 9000000004b00ac8 t2 90000000040e3f18 t3 90000000040f0800
[    0.000000] t4 00000000000f0000 t5 80000000ffffe07e t6 0000000000000003 t7 900000047fff5e20
[    0.000000] t8 aaaaaaaaaaaaaaab u0 0000000000000018 s9 0000000000000000 s0 fffffefffe000000
[    0.000000] s1 0000000000000000 s2 0000000000000080 s3 0000000000000040 s4 0000000000000000
[    0.000000] s5 0000000000000000 s6 fffffefffe000000 s7 900000000470b740 s8 9000000004ad4000
[    0.000000]    ra: 90000000040e3f18 reserve_bootmem_region+0xec/0x21c
[    0.000000]   ERA: 90000000040e3f28 reserve_bootmem_region+0xfc/0x21c
[    0.000000]  CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE)
[    0.000000]  PRMD: 00000000 (PPLV0 -PIE -PWE)
[    0.000000]  EUEN: 00000000 (-FPE -SXE -ASXE -BTE)
[    0.000000]  ECFG: 00070800 (LIE=11 VS=7)
[    0.000000] ESTAT: 00010800 [PIL] (IS=11 ECode=1 EsubCode=0)
[    0.000000]  BADV: 0000000000002b82
[    0.000000]  PRID: 0014d000 (Loongson-64bit, Loongson-3A6000)
[    0.000000] Modules linked in:
[    0.000000] Process swapper (pid: 0, threadinfo=(____ptrval____), task=(____ptrval____))
[    0.000000] Stack : 0000000000000000 9000000002eb5430 0000003a00000020 90000000045ccd00
[    0.000000]         900000000470e000 90000000002c1918 0000000000000000 9000000004110780
[    0.000000]         00000000fe6c0000 0000000480000000 9000000004b4e368 9000000004110748
[    0.000000]         0000000000000000 900000000421ca84 9000000004620000 9000000004564970
[    0.000000]         90000000046f7d78 9000000002cc9f70 90000000002c1918 900000000470e000
[    0.000000]         9000000004564970 90000000040bc0e0 90000000046f7d78 0000000000000000
[    0.000000]         0000000000004000 90000000045ccd00 0000000000000000 90000000002c1918
[    0.000000]         90000000002c1900 900000000470b700 9000000004b4df78 9000000004620000
[    0.000000]         90000000046200a8 90000000046200a8 0000000000000000 9000000004218b2c
[    0.000000]         9000000004270008 0000000000000001 0000000000000000 90000000045ccd00
[    0.000000]         ...
[    0.000000] Call Trace:
[    0.000000] [<90000000040e3f28>] reserve_bootmem_region+0xfc/0x21c
[    0.000000] [<900000000421ca84>] memblock_free_all+0x114/0x350
[    0.000000] [<9000000004218b2c>] mm_core_init+0x138/0x3cc
[    0.000000] [<9000000004200e38>] start_kernel+0x488/0x7a4
[    0.000000] [<90000000040df0d8>] kernel_entry+0xd8/0xdc
[    0.000000]
[    0.000000] Code: 02eb21ad  00410f4c  380c31ac <262b818d> 6800b70d  02c1c196  0015001c  57fe4bb1  260002cd

The reason is early memblock_reserve() in memblock_init() set node id to
MAX_NUMNODES, making NODE_DATA(nid) a NULL dereference in the call chain
reserve_bootmem_region() -> init_reserved_page(). After memblock_init(),
those late calls of memblock_reserve() operate on subregions of memblock
.memory regions. As a result, these reserved regions will be set to the
correct node at the first iteration of memmap_init_reserved_pages().

So set all reserved memblocks on Node#0 at initialization can avoid this
panic.

Reported-by: WANG Xuerui <git@xen0n.name>
Tested-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: WANG Xuerui <git@xen0n.name>  # with nits addressed
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2023-09-20 14:26:29 +08:00
..
.gitignore
access-helper.h LoongArch: Add exception/interrupt handling 2022-06-03 20:09:28 +08:00
acpi.c LoongArch: Fix some build warnings with W=1 2023-09-20 14:26:28 +08:00
alternative.c LoongArch: Use common function sign_extend64() 2023-01-17 11:42:16 +08:00
asm-offsets.c LoongArch: Add Loongson Binary Translation (LBT) extension support 2023-09-06 22:53:55 +08:00
cacheinfo.c LoongArch: Refactor cache probe and flush methods 2022-10-12 16:36:14 +08:00
cpu-probe.c LoongArch: Add Loongson Binary Translation (LBT) extension support 2023-09-06 22:53:55 +08:00
crash_dump.c LoongArch: Add kdump support 2022-10-12 16:36:19 +08:00
dma.c LoongArch: Use acpi_arch_dma_setup() and remove ARCH_HAS_PHYS_TO_DMA 2022-09-24 18:39:21 +02:00
efi-header.S LoongArch: Calculate various sizes in the linker script 2023-06-29 20:58:42 +08:00
efi.c efi: Do not include <linux/screen_info.h> from EFI header 2023-07-08 20:26:36 +02:00
elf.c LoongArch: Add ELF and module support 2022-06-03 20:09:28 +08:00
entry.S LoongArch: Add basic KGDB & KDB support 2023-09-06 22:53:55 +08:00
env.c LoongArch: Add FDT booting support from efi system table 2022-12-14 08:41:53 +08:00
fpu.S LoongArch: Add Loongson Binary Translation (LBT) extension support 2023-09-06 22:53:55 +08:00
ftrace_dyn.c LoongArch: ftrace: Add direct call support 2023-05-01 17:19:53 +08:00
ftrace.c LoongArch/ftrace: Add basic support 2022-12-14 08:41:53 +08:00
genex.S LoongArch: Relay BCE exceptions to userland as SIGSEGV with si_code=SEGV_BNDERR 2023-05-01 17:19:27 +08:00
head.S LoongArch: Add KASAN (Kernel Address Sanitizer) support 2023-09-06 22:54:16 +08:00
hw_breakpoint.c LoongArch: Fix hw_breakpoint_control() for watchpoints 2023-08-26 22:21:57 +08:00
idle.c arch/idle: Change arch_cpu_idle() behavior: always exit with IRQs disabled 2023-01-13 11:48:15 +01:00
image-vars.h efi: loongarch: Drop exports of unused string routines 2022-11-09 12:42:02 +01:00
inst.c LoongArch: Add larch_insn_gen_break() to generate break insns 2023-06-29 20:58:44 +08:00
io.c LoongArch: Add misc common routines 2022-06-03 20:09:28 +08:00
irq.c LoongArch: Clean up the architectural interrupt definitions 2023-05-01 17:19:10 +08:00
jump_label.c LoongArch: Add jump-label implementation 2023-06-29 20:58:44 +08:00
kfpu.c LoongArch: Allow usage of LSX/LASX in the kernel 2023-09-06 22:53:55 +08:00
kgdb.c LoongArch: Add basic KGDB & KDB support 2023-09-06 22:53:55 +08:00
kprobes.c LoongArch: Use larch_insn_gen_break() for kprobes 2023-06-29 20:58:44 +08:00
lbt.S LoongArch: Add Loongson Binary Translation (LBT) extension support 2023-09-06 22:53:55 +08:00
machine_kexec.c LoongArch: Add kdump support 2022-10-12 16:36:19 +08:00
Makefile LoongArch: Fix some build warnings with W=1 2023-09-20 14:26:28 +08:00
mcount_dyn.S LoongArch: Remove unneeded #include <asm/export.h> 2023-08-25 23:40:26 +08:00
mcount.S LoongArch: Replace #include <asm/export.h> with #include <linux/export.h> 2023-08-25 23:40:26 +08:00
mem.c LoongArch: Set all reserved memblocks on Node#0 at initialization 2023-09-20 14:26:29 +08:00
module-sections.c LoongArch: Fix some build warnings with W=1 2023-09-20 14:26:28 +08:00
module.c LoongArch: modules/ftrace: Initialize PLT at load time 2022-12-14 08:41:54 +08:00
numa.c LoongArch: Use static defined zero page rather than allocated 2023-09-06 22:53:10 +08:00
perf_event.c LoongArch: Fix perf event id calculation 2023-06-15 14:35:52 +08:00
perf_regs.c LoongArch: Add perf events support 2022-10-12 16:36:14 +08:00
proc.c LoongArch: Introduce hardware page table walker 2023-06-29 20:58:44 +08:00
process.c LoongArch: Fix some build warnings with W=1 2023-09-20 14:26:28 +08:00
ptrace.c LoongArch: Add Loongson Binary Translation (LBT) extension support 2023-09-06 22:53:55 +08:00
relocate_kernel.S LoongArch: Remove dead code in relocate_new_kernel 2023-09-20 14:26:29 +08:00
relocate.c LoongArch: Simplify the processing of jumping new kernel for KASLR 2023-09-06 22:54:16 +08:00
reset.c LoongArch: Add hibernation (ACPI S4) support 2022-12-14 08:41:53 +08:00
rethook_trampoline.S LoongArch: Replace kretprobe with rethook 2023-06-29 20:58:44 +08:00
rethook.c LoongArch: Replace kretprobe with rethook 2023-06-29 20:58:44 +08:00
rethook.h LoongArch: Replace kretprobe with rethook 2023-06-29 20:58:44 +08:00
setup.c LoongArch: Add KASAN (Kernel Address Sanitizer) support 2023-09-06 22:54:16 +08:00
signal.c LoongArch: Fix some build warnings with W=1 2023-09-20 14:26:28 +08:00
smp.c LoongArch: Fix some build warnings with W=1 2023-09-20 14:26:28 +08:00
stacktrace.c LoongArch: Get partial stack information when providing regs parameter 2023-09-06 22:54:16 +08:00
switch.S LoongArch: Add basic STACKPROTECTOR support 2022-12-14 08:41:53 +08:00
syscall.c LoongArch: Fix some build warnings with W=1 2023-09-20 14:26:28 +08:00
sysrq.c tty: sysrq: switch sysrq handlers from int to u8 2023-07-25 19:21:03 +02:00
time.c LoongArch: Fix some build warnings with W=1 2023-09-20 14:26:28 +08:00
topology.c LoongArch: Fix some build warnings with W=1 2023-09-20 14:26:28 +08:00
traps.c LoongArch: Fix some build warnings with W=1 2023-09-20 14:26:28 +08:00
unaligned.c LoongArch: Delete unnecessary debugfs checking 2023-06-29 20:58:42 +08:00
unwind_guess.c LoongArch: Strip guess unwinder out from prologue unwinder 2023-01-17 11:42:16 +08:00
unwind_prologue.c LoongArch: Check unwind_error() in arch_stack_walk() 2023-04-19 12:07:27 +08:00
unwind.c LoongArch: Check unwind_error() in arch_stack_walk() 2023-04-19 12:07:27 +08:00
uprobes.c LoongArch: Add uprobes support 2023-06-29 20:58:44 +08:00
vdso.c LoongArch: Add support to clone a time namespace 2023-06-29 20:58:43 +08:00
vmlinux.lds.S LoongArch: Fix lockdep static memory detection 2023-09-20 14:26:28 +08:00