lkml.org 
[lkml]   [2022]   [Jul]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH v3 2/4] bpf-lsm: Make bpf_lsm_userns_create() sleepable
    Date
    Users may want to audit calls to security_create_user_ns() and access
    user space memory. Also create_user_ns() runs without
    pagefault_disabled(). Therefore, make bpf_lsm_userns_create() sleepable
    for mandatory access control policies.

    Signed-off-by: Frederick Lawler <fred@cloudflare.com>

    ---
    Changes since v2:
    - Rename create_user_ns hook to userns_create
    Changes since v1:
    - None
    ---
    kernel/bpf/bpf_lsm.c | 1 +
    1 file changed, 1 insertion(+)

    diff --git a/kernel/bpf/bpf_lsm.c b/kernel/bpf/bpf_lsm.c
    index c1351df9f7ee..4593437809cc 100644
    --- a/kernel/bpf/bpf_lsm.c
    +++ b/kernel/bpf/bpf_lsm.c
    @@ -250,6 +250,7 @@ BTF_ID(func, bpf_lsm_task_getsecid_obj)
    BTF_ID(func, bpf_lsm_task_prctl)
    BTF_ID(func, bpf_lsm_task_setscheduler)
    BTF_ID(func, bpf_lsm_task_to_inode)
    +BTF_ID(func, bpf_lsm_userns_create)
    BTF_SET_END(sleepable_lsm_hooks)

    bool bpf_lsm_is_sleepable_hook(u32 btf_id)
    --
    2.30.2
    \
     
     \ /
      Last update: 2022-07-21 19:29    [W:4.092 / U:0.028 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site