Re: [PATCH 4.9 0/6] Convert isec->lock into a spinlock fixing deadlock on GFS2

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On Sat, Jul 30, 2022 at 07:03:37PM +0200, Alexander Grund wrote:
> This patchset backports basically upstream commit 9287aed2
> (selinux: Convert isec->lock into a spinlock). This
> "fixes a deadlock between selinux and GFS2 when GFS2 invalidates a security label",
> see the original discussion at
> https://lore.kernel.org/all/1478812710-17190-2-git-send-email-agruenba@xxxxxxxxxx/T/
> It also contains the follow-up fixes to make this correct.
> 
> The first 3 commits (by Andreas) are valuable on their own too as
> they fix a documentation bug, avoid partially initialized structs
> and (slightly) improve performance while making the code cleaner.
> 
> Andreas Gruenbacher (4):
>   selinux: Minor cleanups
>   proc: Pass file mode to proc_pid_make_inode
>   selinux: Clean up initialization of isec->sclass
>   selinux: Convert isec->lock into a spinlock
> 
> Paul Moore (1):
>   selinux: fix inode_doinit_with_dentry() LABEL_INVALID error handling
> 
> Tianyue Ren (1):
>   selinux: fix error initialization in inode_doinit_with_dentry()
> 
>  fs/proc/base.c                    |  23 +++---
>  fs/proc/fd.c                      |   6 +-
>  fs/proc/internal.h                |   2 +-
>  fs/proc/namespaces.c              |   3 +-
>  security/selinux/hooks.c          | 123 +++++++++++++++++++-----------
>  security/selinux/include/objsec.h |   5 +-
>  security/selinux/selinuxfs.c      |   4 +-
>  7 files changed, 96 insertions(+), 70 deletions(-)
> 
> -- 
> 2.25.1
> 

All look good, now queued up, thanks,


greg k-h



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