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| author | Jann Horn <jannh@google.com> | 2018-06-25 17:22:00 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-11 16:03:51 +0200 |
| commit | 8cff10da50b2f03819567b2ee342dffd9d0eb9eb (patch) | |
| tree | e9b2ccdfbb77e071fed13d301096884ae67d350a /drivers/staging/comedi/drivers/quatech_daqp_cs.c | |
| parent | 242dbd2b3df71a42e3bca5fbb2cf1eda161e078f (diff) | |
netfilter: nf_log: don't hold nf_log_mutex during user access
commit ce00bf07cc95a57cd20b208e02b3c2604e532ae8 upstream.
The old code would indefinitely block other users of nf_log_mutex if
a userspace access in proc_dostring() blocked e.g. due to a userfaultfd
region. Fix it by moving proc_dostring() out of the locked region.
This is a followup to commit 266d07cb1c9a ("netfilter: nf_log: fix
sleeping function called from invalid context"), which changed this code
from using rcu_read_lock() to taking nf_log_mutex.
Fixes: 266d07cb1c9a ("netfilter: nf_log: fix sleeping function calle[...]")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/comedi/drivers/quatech_daqp_cs.c')
0 files changed, 0 insertions, 0 deletions