| Subject | Re: [PATCH 176/190] Revert "net/net_namespace: Check the return value of register_pernet_subsys()" | From | Kirill Tkhai <> | Date | Wed, 21 Apr 2021 23:45:26 +0300 |
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On 21.04.2021 16:00, Greg Kroah-Hartman wrote: > This reverts commit 0eb987c874dc93f9c9d85a6465dbde20fdd3884c. > > Commits from @umn.edu addresses have been found to be submitted in "bad > faith" to try to test the kernel community's ability to review "known > malicious" changes. The result of these submissions can be found in a > paper published at the 42nd IEEE Symposium on Security and Privacy > entitled, "Open Source Insecurity: Stealthily Introducing > Vulnerabilities via Hypocrite Commits" written by Qiushi Wu (University > of Minnesota) and Kangjie Lu (University of Minnesota). > > Because of this, all submissions from this group must be reverted from > the kernel tree and will need to be re-reviewed again to determine if > they actually are a valid fix. Until that work is complete, remove this > change to ensure that no problems are being introduced into the > codebase. > > Cc: Aditya Pakki <pakki001@umn.edu> > Cc: Kirill Tkhai <ktkhai@virtuozzo.com> > Cc: David S. Miller <davem@davemloft.net> > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > --- > net/core/net_namespace.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c > index 43b6ac4c4439..9ae0b275238e 100644 > --- a/net/core/net_namespace.c > +++ b/net/core/net_namespace.c > @@ -1101,8 +1101,7 @@ static int __init net_ns_init(void) > init_net_initialized = true; > up_write(&pernet_ops_rwsem); > > - if (register_pernet_subsys(&net_ns_ops)) > - panic("Could not register network namespace subsystems"); > + register_pernet_subsys(&net_ns_ops);
Nacked-by: Kirill Tkhai <ktkhai@virtuozzo.com>
This patch does not have any problem, since it has been already carefully reviewed. Kernel panics here only, if we can't allocate ns_common::inum for init_net. This can be only a result of a critical deficiency of memory during boot.
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