[Kernel-packages] [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-netf
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]'"):
https://github.com/xen-
project/xen/commit/93d913c6e66e01597681d0a456c1523279218524
I am way out of my depth here, but as I understand it, these xen files
get vendored into the Linux codebase:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=125c0a646a257fd58de223f2c3e1fe8a99085644
...and from there, they get copied into the git repos for both Ubuntu's
`linux` and `linux-aws` packages. Here's one of the affected files in
the Jammy LTS repos, and it definitely hasn't been patched because it
was last updated in 2021:
- linux:
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/jammy/log/include/xen/interface/io/ring.h
- linux-aws:
https://git.launchpad.net/~canonical-kernel/ubuntu/+source/linux-aws/+git/jammy/log/include/xen/interface/io/ring.h
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https://bugs.launchpad.net/bugs/2058480
Title:
[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 " multiple times,
especially during boot
Status in linux package in Ubuntu:
Confirmed
Status in linux-aws package in Ubuntu:
New
Bug description:
A newly launched Ubuntu 22.04.4 EC2 instance 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" multiple times,
especially during boot.
Reproducing step:
- Launch an Ubuntu 22.04.4 EC2 instance with the instance type t2.*.
Additional Info:
- Please use t2 instance to make sure to use xen-netfront as a network device.
- This messages similar to
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2058477, which is related
to netvsc.c
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[Kernel-packages] [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-netf
** Also affects: linux-aws (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2058480 Title: [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 " multiple times, especially during boot Status in linux package in Ubuntu: Confirmed Status in linux-aws package in Ubuntu: New Bug description: A newly launched Ubuntu 22.04.4 EC2 instance 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" multiple times, especially during boot. Reproducing step: - Launch an Ubuntu 22.04.4 EC2 instance with the instance type t2.*. Additional Info: - Please use t2 instance to make sure to use xen-netfront as a network device. - This messages similar to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2058477, which is related to netvsc.c To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2058480/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [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-netf
`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 received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2058480 Title: [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 " multiple times, especially during boot Status in linux package in Ubuntu: Confirmed Bug description: A newly launched Ubuntu 22.04.4 EC2 instance 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" multiple times, especially during boot. Reproducing step: - Launch an Ubuntu 22.04.4 EC2 instance with the instance type t2.*. Additional Info: - Please use t2 instance to make sure to use xen-netfront as a network device. - This messages similar to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2058477, which is related to netvsc.c To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2058480/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [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-netf
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 error still shows up in the logs. `uname -r` says I'm running 6.5.0-1016-aws. The webserver still functions as far as I can tell, but it's definitely a regression. I created this EC2 instance with 22.04 a couple of months ago, and it suddenly started happening. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2058480 Title: [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 " multiple times, especially during boot Status in linux package in Ubuntu: Confirmed Bug description: A newly launched Ubuntu 22.04.4 EC2 instance 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" multiple times, especially during boot. Reproducing step: - Launch an Ubuntu 22.04.4 EC2 instance with the instance type t2.*. Additional Info: - Please use t2 instance to make sure to use xen-netfront as a network device. - This messages similar to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2058477, which is related to netvsc.c To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2058480/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
