lkml.org 
[lkml]   [2021]   [Apr]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 066/190] Revert "bpf: Remove unnecessary assertion on fp_old"
    Date
    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
    \
     
     \ /
      Last update: 2021-04-21 15:05    [W:3.916 / U:0.404 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site