Re: [PATCH] fs: Prevent file descriptor table allocations exceeding INT_MAX

[Christian Brauner <brauner@kernel.org>]

On Sun, 29 Jun 2025 03:40:21 -0400, Sasha Levin wrote:
> When sysctl_nr_open is set to a very high value (for example, 1073741816
> as set by systemd), processes attempting to use file descriptors near
> the limit can trigger massive memory allocation attempts that exceed
> INT_MAX, resulting in a WARNING in mm/slub.c:
> 
>   WARNING: CPU: 0 PID: 44 at mm/slub.c:5027 __kvmalloc_node_noprof+0x21a/0x288
> 
> [...]

Applied to the vfs-6.17.misc branch of the vfs/vfs.git tree.
Patches in the vfs-6.17.misc branch should appear in linux-next soon.

Please report any outstanding bugs that were missed during review in a
new review to the original patch series allowing us to drop it.

It's encouraged to provide Acked-bys and Reviewed-bys even though the
patch has now been applied. If possible patch trailers will be updated.

Note that commit hashes shown below are subject to change due to rebase,
trailer updates or similar. If in doubt, please check the listed branch.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git
branch: vfs-6.17.misc

[1/1] fs: Prevent file descriptor table allocations exceeding INT_MAX
      https://git.kernel.org/vfs/vfs/c/c608a019c82f