linux-kernel - Re: [PATCH v3 0/4] make vmalloc gfp flags usage more apparent

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Message-ID:
 <TY3PR01MB11346E8536B69E11A9A9DAB0886D6A@TY3PR01MB11346.jpnprd01.prod.outlook.com>
Date: Tue, 18 Nov 2025 16:14:01 +0000
From: Biju Das <biju.das.jz@...renesas.com>
To: "vishal.moola@...il.com" <vishal.moola@...il.com>
CC: "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"bpf@...r.kernel.org" <bpf@...r.kernel.org>, "hch@...radead.org"
	<hch@...radead.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "linux-mm@...ck.org" <linux-mm@...ck.org>,
	"urezki@...il.com" <urezki@...il.com>
Subject: Re: [PATCH v3 0/4] make vmalloc gfp flags usage more apparent

Hi All,

I get below warning with today's next. Can you please suggest how to fix this warning?


[   13.122280] systemd[1]: File System Check on Root Device was skipped because of an unmet condition check (ConditionPathIsReadWrite=!/).
[   13.142562] ------------[ cut here ]------------
[   13.147308] Unexpected gfp: 0x400000 (__GFP_ACCOUNT). Fixing up to gfp: 0x100dc0 (GFP_USER|__GFP_ZERO). Fix your code!
[   13.158526] WARNING: mm/vmalloc.c:3937 at vmalloc_fix_flags+0x9c/0xac, CPU#1: systemd/1
[   13.166576] Modules linked in: backlight ipv6
[   13.170983] CPU: 1 UID: 0 PID: 1 Comm: systemd Not tainted 6.18.0-rc6-next-20251118-gcc318393a5df #175 PREEMPT
[   13.181082] Hardware name: Renesas SMARC EVK based on r9a07g054l2 (DT)
[   13.187641] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[   13.194675] pc : vmalloc_fix_flags+0x9c/0xac
[   13.194705] lr : vmalloc_fix_flags+0x9c/0xac
[   13.194715] sp : ffff8000828fbab0
[   13.194719] x29: ffff8000828fbad0 x28: 0000000000000000 x27: 0000000000000000
[   13.194734] x26: 0000000000000000 x25: 0000000000000000 x24: 000000000000000f
[   13.194746] x23: 0000ffffcc595b58 x22: 0000000000001000 x21: 0000000000100cc0
[   13.194757] x20: ffff8000801d7af0 x19: 0000000000001000 x18: 0000000000000006
[   13.194768] x17: 0000000000000000 x16: 0000000000000000 x15: 006c326703000000
[   13.194779] x14: 00000000000001da x13: 00000000000001da x12: 0000000000000000
[   13.194790] x11: 00000000000000c0 x10: 0000000000000ac0 x9 : ffff8000828fb920
[   13.194802] x8 : ffff00000aca8b20 x7 : 00000000021cb08a x6 : 0000000000000186
[   13.194813] x5 : 000000009d17f2f7 x4 : ffff800037e00000 x3 : 0000000000000010
[   13.194824] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff00000aca8000
[   13.194836] Call trace:
[   13.194842]  vmalloc_fix_flags+0x9c/0xac (P)
[   13.194855]  __vmalloc_noprof+0x60/0x74
[   13.194865]  bpf_prog_alloc_no_stats+0x44/0x218
[   13.194879]  bpf_prog_alloc+0x28/0xec
[   13.194888]  bpf_prog_load+0x168/0xcdc
[   13.194899]  __sys_bpf+0x814/0x211c
[   13.194907]  __arm64_sys_bpf+0x24/0x40
[   13.194916]  invoke_syscall+0x48/0x104
[   13.194927]  el0_svc_common.constprop.0+0x40/0xe0
[   13.194935]  do_el0_svc+0x1c/0x28
[   13.194943]  el0_svc+0x34/0x108
[   13.194955]  el0t_64_sync_handler+0xa0/0xf0
[   13.194964]  el0t_64_sync+0x198/0x19c
[   13.194975] ---[ end trace 0000000000000000 ]---
[   13.328233] fuse: init (API version 7.45)
[   13.339395] systemd[1]: Starting Journal Service...


Cheers,
Biju