linux-kernel - Re: [syzbot] WARNING: refcount bug in qrtr_node

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Message-ID: <9b98fb89-c9a1-d220-2583-66e89c765d23@gmail.com>
Date:   Tue, 31 Aug 2021 21:26:34 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     syzbot <syzbot+c613e88b3093ebf3686e@...kaller.appspotmail.com>,
        bjorn.andersson@...aro.org, dan.carpenter@...cle.com,
        hdanton@...a.com, linux-kernel@...r.kernel.org,
        manivannan.sadhasivam@...aro.org, netdev@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] WARNING: refcount bug in qrtr_node_lookup



On 8/31/21 8:41 PM, syzbot wrote:
> Hello,
> 
> syzbot tried to test the proposed patch but the build/boot failed:
> 
> arch/x86/kernel/setup.c:916:6: error: implicit declaration of function 'acpi_mps_check' [-Werror,-Wimplicit-function-declaration]
> arch/x86/kernel/setup.c:1110:2: error: implicit declaration of function 'acpi_table_upgrade' [-Werror,-Wimplicit-function-declaration]
> arch/x86/kernel/setup.c:1112:2: error: implicit declaration of function 'acpi_boot_table_init' [-Werror,-Wimplicit-function-declaration]
> arch/x86/kernel/setup.c:1120:2: error: implicit declaration of function 'early_acpi_boot_init' [-Werror,-Wimplicit-function-declaration]
> arch/x86/kernel/setup.c:1162:2: error: implicit declaration of function 'acpi_boot_init' [-Werror,-Wimplicit-function-declaration]
> 
> 
> Tested on:
> 
> commit:         9e9fb765 Merge tag 'net-next-5.15' of git://git.kernel..
> git tree:       upstream
> dashboard link: https://syzkaller.appspot.com/bug?extid=c613e88b3093ebf3686e
> compiler:       
> patch:          https://syzkaller.appspot.com/x/patch.diff?x=1413e2f5300000
> 

Tree seems broken, no idea why the following is needed.

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 63b20536c8d236083336c2b50dc5f54225a80eab..6edec9a28293ea3241bd7842ab5555a1691e6cea 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -22,6 +22,7 @@
 #include <linux/usb/xhci-dbgp.h>
 #include <linux/static_call.h>
 #include <linux/swiotlb.h>
+#include <linux/acpi.h>
 
 #include <uapi/linux/mount.h>