Messages in this thread | | | Date | Tue, 27 Apr 2021 19:58:09 +0200 | From | Greg Kroah-Hartman <> | Subject | Re: [PATCH 066/190] Revert "bpf: Remove unnecessary assertion on fp_old" |
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On Wed, Apr 21, 2021 at 02:59:01PM +0200, Greg Kroah-Hartman wrote: > This reverts commit 5bf2fc1f9c88397b125d5ec5f65b1ed9300ba59d. > > 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: Daniel Borkmann <daniel@iogearbox.net> > Cc: https > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > --- > kernel/bpf/core.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c > index 75244ecb2389..da29211ea5d8 100644 > --- a/kernel/bpf/core.c > +++ b/kernel/bpf/core.c > @@ -230,6 +230,8 @@ struct bpf_prog *bpf_prog_realloc(struct bpf_prog *fp_old, unsigned int size, > struct bpf_prog *fp; > u32 pages; > > + BUG_ON(fp_old == NULL); > + > size = round_up(size, PAGE_SIZE); > pages = size / PAGE_SIZE; > if (pages <= fp_old->pages) > -- > 2.31.1 >
The original commit here is correct, I'll drop this revert.
thanks,
greg k-h
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