/* * osd_sec.h - OSD security manager API * * Copyright (C) 2008 Panasas Inc. All rights reserved. * * Authors: * Boaz Harrosh * Benny Halevy * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 * */ #ifndef __OSD_SEC_H__ #define __OSD_SEC_H__ #include #include /* * Contains types and constants of osd capabilities and security * encoding/decoding. * API is trying to keep security abstract so initiator of an object * based pNFS client knows as little as possible about security and * capabilities. It is the Server's osd-initiator place to know more. * Also can be used by osd-target. */ void osd_sec_encode_caps(void *caps, ...);/* NI */ void osd_sec_init_nosec_doall_caps(void *caps, const struct osd_obj_id *obj, bool is_collection, const bool is_v1); bool osd_is_sec_alldata(struct osd_security_parameters *sec_params); /* Conditionally sign the CDB according to security setting in ocdb * with cap_key */ void osd_sec_sign_cdb(struct osd_cdb *ocdb, const u8 *cap_key); /* Unconditionally sign the BIO data with cap_key. * Check for osd_is_sec_alldata() was done prior to calling this. */ void osd_sec_sign_data(void *data_integ, struct bio *bio, const u8 *cap_key); /* Version independent copy of caps into the cdb */ void osd_set_caps(struct osd_cdb *cdb, const void *caps); #endif /* ndef __OSD_SEC_H__ */ t/'>summaryrefslogtreecommitdiff
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authorAndrei Vagin <avagin@openvz.org>2017-01-04 19:28:14 -0800
committerEric W. Biederman <ebiederm@xmission.com>2017-01-10 13:34:56 +1300
commitadd7c65ca426b7a37184dd3d2172394e23d585d6 (patch)
tree28b08b519540041b06ed0ab0b1c005076b932e8e /include/rdma
parent75422726b0f717d67db3283c2eb5bc14fa2619c5 (diff)
pid: fix lockdep deadlock warning due to ucount_lock
========================================================= [ INFO: possible irq lock inversion dependency detected ] 4.10.0-rc2-00024-g4aecec9-dirty #118 Tainted: G W --------------------------------------------------------- swapper/1/0 just changed the state of lock: (&(&sighand->siglock)->rlock){-.....}, at: [<ffffffffbd0a1bc6>] __lock_task_sighand+0xb6/0x2c0 but this lock took another, HARDIRQ-unsafe lock in the past: (ucounts_lock){+.+...} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Chain exists of: &(&sighand->siglock)->rlock --> &(&tty->ctrl_lock)->rlock --> ucounts_lock Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(ucounts_lock); local_irq_disable(); lock(&(&sighand->siglock)->rlock); lock(&(&tty->ctrl_lock)->rlock); <Interrupt> lock(&(&sighand->siglock)->rlock); *** DEADLOCK *** This patch removes a dependency between rlock and ucount_lock. Fixes: f333c700c610 ("pidns: Add a limit on the number of pid namespaces") Cc: stable@vger.kernel.org Signed-off-by: Andrei Vagin <avagin@openvz.org> Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'include/rdma')