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Message-ID: <a70e4064-a040-447b-8556-1fd02f19383d@linux.vnet.ibm.com>
Date: Mon, 8 Jul 2024 15:09:50 +0530
From: Venkat Rao Bagalkote <venkat88@...ux.vnet.ibm.com>
To: jgowans@...zon.com, rppt@...nel.org, akpm@...ux-foundation.org,
        graf@...zon.de, sfr@...b.auug.org.au, linux-kernel@...r.kernel.org,
        linux-mm@...r.kernel.org
Subject: [linux-next-6.10-rc6-20240703] Warning at mm/memblock.c:1447

Greetings!!!


Observing below warning while booting, when fadump is configured with nocam.


[    0.061329] ------------[ cut here ]------------
[    0.061332] WARNING: CPU: 0 PID: 1 at mm/memblock.c:1447 
memblock_alloc_range_nid+0x24c/0x278
[    0.061337] Modules linked in:
[    0.061339] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 
6.10.0-rc6-next-20240703-auto #1
[    0.061341] Hardware name: IBM,9080-HEX POWER10 (architected) 
0x800200 0xf000006 of:IBM,FW1060.00 (NH1060_016) hv:phyp pSeries
[    0.061342] NIP:  c000000002061610 LR: c000000002061424 CTR: 
0000000000000000
[    0.061344] REGS: c000000004d2f780 TRAP: 0700   Not tainted 
(6.10.0-rc6-next-20240703-auto)
[    0.061345] MSR:  8000000002029033 <SF,VEC,EE,ME,IR,DR,RI,LE>  CR: 
44000242  XER: 20040010
[    0.061350] CFAR: c00000000206142c IRQMASK: 0
[    0.061350] GPR00: c000000002061424 c000000004d2fa20 c0000000015a3d00 
0000000000000001
[    0.061350] GPR04: 0000000000000800 00000012c0000000 0000002580000000 
ffffffffffffffff
[    0.061350] GPR08: 0000000000000000 0000000000000002 c000000002f58c08 
0000000024000242
[    0.061350] GPR12: c000000000454408 c000000003010000 c0000000000112ac 
0000000000000000
[    0.061350] GPR16: 0000000000000000 0000000000000000 0000000000000000 
0000000000000000
[    0.061350] GPR20: 0000000000000000 0000000000000000 0000000000000000 
c00000000149d390
[    0.061350] GPR24: c00000000200466c ffffffffffffffff 0000002580000000 
00000012c0000000
[    0.061350] GPR28: 0000000000000800 0000000000000005 0000000000000000 
0000000000000000
[    0.061365] NIP [c000000002061610] memblock_alloc_range_nid+0x24c/0x278
[    0.061368] LR [c000000002061424] memblock_alloc_range_nid+0x60/0x278
[    0.061370] Call Trace:
[    0.061371] [c000000004d2fa20] [c000000004d2fa60] 0xc000000004d2fa60 
(unreliable)
[    0.061373] [c000000004d2fae0] [c00000000206178c] 
memblock_phys_alloc_range+0x60/0xe4
[    0.061376] [c000000004d2fb60] [c000000002017a60] 
setup_fadump+0x114/0x244
[    0.061379] [c000000004d2fbe0] [c000000000010e78] 
do_one_initcall+0x60/0x398
[    0.061381] [c000000004d2fcc0] [c000000002006b5c] 
do_initcalls+0x12c/0x218
[    0.061383] [c000000004d2fd70] [c000000002006f28] 
kernel_init_freeable+0x238/0x370
[    0.061386] [c000000004d2fde0] [c0000000000112d8] kernel_init+0x34/0x26c
[    0.061388] [c000000004d2fe50] [c00000000000df7c] 
ret_from_kernel_user_thread+0x14/0x1c
[    0.061389] --- interrupt: 0 at 0x0
[    0.061390] Code: eb81ffe0 ebc1fff0 ebe1fff8 7c0803a6 7d710120 
7d708120 4e800020 60000000 4afbf219 60000000 3b800080 4bfffe40 
<0fe00000> e8610068 7f26cb78 38a02900
[    0.061396] ---[ end trace 0000000000000000 ]---


cat /proc/cmdline
BOOT_IMAGE=(ieee1275//vdevice/vfc-client@...000d4/disk@...50768101535e5,msdos3)/boot/vmlinuz-6.10.0-rc6-next-20240703 
root=UUID=2c90ab47-3389-4017-9f06-0c94534fd9cb ro 
crashkernel=2G-4G:384M,4G-16G:512M,16G-64G:1G,64G-128G:2G,128G-:4G 
fadump=nocma


Reverting the below commit, issue is not seen.


Commit ID: 0fa4ac6722127f4aae2ea9813ba246ce2bec8326


Regards,

Venkat.


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