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

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Message-ID: <aRyn7Ibaqa5rlHHx@fedora>
Date: Tue, 18 Nov 2025 09:07:56 -0800
From: "Vishal Moola (Oracle)" <vishal.moola@...il.com>
To: Biju Das <biju.das.jz@...renesas.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

On Tue, Nov 18, 2025 at 04:14:01PM +0000, Biju Das wrote:
> Hi All,
> 
> I get below warning with today's next. Can you please suggest how to fix this warning?

Thanks Biju. This has been fixed and will be in whenever Andrews tree
gets merged again.

> 
> [   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