linux-kernel - Re: [syzbot] Re: [syzbot] [kernel?] KMSAN: kernel-infoleak in vmci_host_unlocked

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Message-ID: <6854b349.a00a0220.137b3.0026.GAE@google.com>
Date: Thu, 19 Jun 2025 18:03:05 -0700
From: syzbot <syzbot+9b9124ae9b12d5af5d95@...kaller.appspotmail.com>
To: linux-kernel@...r.kernel.org
Subject: Re: [syzbot] Re: [syzbot] [kernel?] KMSAN: kernel-infoleak in
 vmci_host_unlocked_ioctl (3)

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Subject: Re: [syzbot] [kernel?] KMSAN: kernel-infoleak in vmci_host_unlocked_ioctl (3)
Author: lizhi.xu@...driver.com

#syz test

diff --git a/drivers/misc/vmw_vmci/vmci_context.c b/drivers/misc/vmw_vmci/vmci_context.c
index f22b44827e92..fe0f18a0fb63 100644
--- a/drivers/misc/vmw_vmci/vmci_context.c
+++ b/drivers/misc/vmw_vmci/vmci_context.c
@@ -314,7 +314,7 @@ int vmci_ctx_enqueue_datagram(u32 cid, struct vmci_datagram *dg)
 	}
 
 	/* Allocate guest call entry and add it to the target VM's queue. */
-	dq_entry = kmalloc(sizeof(*dq_entry), GFP_KERNEL);
+	dq_entry = kzalloc(sizeof(*dq_entry), GFP_KERNEL);
 	if (dq_entry == NULL) {
 		pr_warn("Failed to allocate memory for datagram\n");
 		vmci_ctx_put(context);