[Bug 2058480] Re: [Ubuntu 22.04.4/linux-image-6.5.0-1014-aws] Kernel outputs "UBSAN: array-index-out-of-bounds in /build/linux-aws-6.5-4tw9h1/linux-aws-6.5-6.5.0/drivers/net/xen-netfront.c:349:9 " mul

Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: linux-aws (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2058480 Title:

[Bug 2058480] Re: [Ubuntu 22.04.4/linux-image-6.5.0-1014-aws] Kernel outputs "UBSAN: array-index-out-of-bounds in /build/linux-aws-6.5-4tw9h1/linux-aws-6.5-6.5.0/drivers/net/xen-netfront.c:349:9 " mul

It's a benign new warning due to stricter compile options. Needs source code modifications but the warning is harmless (but annoying). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2058480 Title:

[Bug 2058480] Re: [Ubuntu 22.04.4/linux-image-6.5.0-1014-aws] Kernel outputs "UBSAN: array-index-out-of-bounds in /build/linux-aws-6.5-4tw9h1/linux-aws-6.5-6.5.0/drivers/net/xen-netfront.c:349:9 " mul

This may have already been fixed upstream in December 2023: this commit to xen-project/xen looks extremely relevant, because it purports to fix an UBSAN issue with the exact same error text as this issue ("UBSAN: index 1 is out of range for type 'xen_netif_rx_sring_entry [1]'"):

[Bug 2058480] Re: [Ubuntu 22.04.4/linux-image-6.5.0-1014-aws] Kernel outputs "UBSAN: array-index-out-of-bounds in /build/linux-aws-6.5-4tw9h1/linux-aws-6.5-6.5.0/drivers/net/xen-netfront.c:349:9 " mul

** Also affects: linux-aws (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2058480 Title: [Ubuntu 22.04.4/linux-image-6.5.0-1014-aws] Kernel

[Bug 2058480] Re: [Ubuntu 22.04.4/linux-image-6.5.0-1014-aws] Kernel outputs "UBSAN: array-index-out-of-bounds in /build/linux-aws-6.5-4tw9h1/linux-aws-6.5-6.5.0/drivers/net/xen-netfront.c:349:9 " mul

`dmesg` output just after boot, capturing some of the UBSANs (first one happens 2 seconds in). I see a few different Call Traces in there. ** Attachment added: "dmesg-boot.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2058480/+attachment/5760896/+files/dmesg-boot.txt -- You

[Bug 2058480] Re: [Ubuntu 22.04.4/linux-image-6.5.0-1014-aws] Kernel outputs "UBSAN: array-index-out-of-bounds in /build/linux-aws-6.5-4tw9h1/linux-aws-6.5-6.5.0/drivers/net/xen-netfront.c:349:9 " mul

I am also affected by this. I have an Ubuntu webserver (t2.micro, 22.04.4 LTS (jammy)) that suddenly started having these show up in the kernel journalctl logs, multiple times at boot time. Just to be sure I had the latest everything, I ran `apt update`, `apt upgrade`, and rebooted; the UBSAN

[Bug 2058480] Re: [Ubuntu 22.04.4/linux-image-6.5.0-1014-aws] Kernel outputs "UBSAN: array-index-out-of-bounds in /build/linux-aws-6.5-4tw9h1/linux-aws-6.5-6.5.0/drivers/net/xen-netfront.c:349:9 " mul

Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: linux (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2058480 Title:

[Bug 2058480] Re: [Ubuntu 22.04.4/linux-image-6.5.0-1014-aws] Kernel outputs "UBSAN: array-index-out-of-bounds in /build/linux-aws-6.5-4tw9h1/linux-aws-6.5-6.5.0/drivers/net/xen-netfront.c:349:9 " mul

** Changed in: linux (Ubuntu) Assignee: (unassigned) => Marcelo Cerri (mhcerri) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2058480 Title: [Ubuntu 22.04.4/linux-image-6.5.0-1014-aws] Kernel