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| * crush: fix crash from invalid 'take' argumentIlya Dryomov2015-06-251-2/+9
| | | | | | | | | | | | | | | | | | Verify that the 'take' argument is a valid device or bucket. Otherwise ignore it (do not add the value to the working vector). Reflects ceph.git commit 9324d0a1af61e1c234cc48e2175b4e6320fff8f4. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
| * libceph: fix wrong name "Ceph filesystem for Linux"Hong Zhiguo2015-06-251-1/+1
| | | | | | | | | | | | | | | | modinfo libceph prints the module name "Ceph filesystem for Linux", which is same as the real fs module ceph. It's confusing. Signed-off-by: Hong Zhiguo <zhiguohong@tencent.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
| * libceph: a couple tweaks for wait loopsIlya Dryomov2015-06-252-5/+4
| | | | | | | | | | | | | | | | | | - return -ETIMEDOUT instead of -EIO in case of timeout - wait_event_interruptible_timeout() returns time left until timeout and since it can be almost LONG_MAX we had better assign it to long Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: store timeouts in jiffies, verify user inputIlya Dryomov2015-06-253-20/+47
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are currently three libceph-level timeouts that the user can specify on mount: mount_timeout, osd_idle_ttl and osdkeepalive. All of these are in seconds and no checking is done on user input: negative values are accepted, we multiply them all by HZ which may or may not overflow, arbitrarily large jiffies then get added together, etc. There is also a bug in the way mount_timeout=0 is handled. It's supposed to mean "infinite timeout", but that's not how wait.h APIs treat it and so __ceph_open_session() for example will busy loop without much chance of being interrupted if none of ceph-mons are there. Fix all this by verifying user input, storing timeouts capped by msecs_to_jiffies() in jiffies and using the new ceph_timeout_jiffies() helper for all user-specified waits to handle infinite timeouts correctly. Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: use kvfree() instead of open-coding itIlya Dryomov2015-06-251-4/+1
| | | | | | | | | | | | | | This one sneaked in through vfs tree with commit 2b777c9dd9eb ("ceph_sync_read: stop poking into iov_iter guts"). Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
| * libceph: allow setting osd_req_op's flagsYan, Zheng2015-06-251-9/+15
| | | | | | | | | | Signed-off-by: Yan, Zheng <zyan@redhat.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: properly release STAT request's raw_data_inYan, Zheng2015-06-251-0/+3
| | | | | | | | | | Signed-off-by: Yan, Zheng <zyan@redhat.com> Reviewed-by: Alex Elder <elder@linaro.org>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2015-06-011-13/+20
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/net/phy/amd-xgbe-phy.c drivers/net/wireless/iwlwifi/Kconfig include/net/mac80211.h iwlwifi/Kconfig and mac80211.h were both trivial overlapping changes. The drivers/net/phy/amd-xgbe-phy.c file got removed in 'net-next' and the bug fix that happened on the 'net' side is already integrated into the rest of the amd-xgbe driver. Signed-off-by: David S. Miller <davem@davemloft.net>
| * Revert "libceph: clear r_req_lru_item in __unregister_linger_request()"Ilya Dryomov2015-05-201-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit ba9d114ec5578e6e99a4dfa37ff8ae688040fd64. .. which introduced a regression that prevented all lingering requests requeued in kick_requests() from ever being sent to the OSDs, resulting in a lot of missed notifies. In retrospect it's pretty obvious that r_req_lru_item item in the case of lingering requests can be used not only for notarget, but also for unsent linkage due to how tightly actual map and enqueue operations are coupled in __map_request(). The assertion that was being silenced is taken care of in the previous ("libceph: request a new osdmap if lingering request maps to no osd") commit: by always kicking homeless lingering requests we ensure that none of them ends up on the notarget list outside of the critical section guarded by request_mutex. Cc: stable@vger.kernel.org # 3.18+, needs b0494532214b "libceph: request a new osdmap if lingering request maps to no osd" Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Sage Weil <sage@redhat.com>
| * libceph: request a new osdmap if lingering request maps to no osdIlya Dryomov2015-05-201-11/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit does two things. First, if there are any homeless lingering requests, we now request a new osdmap even if the osdmap that is being processed brought no changes, i.e. if a given lingering request turned homeless in one of the previous epochs and remained homeless in the current epoch. Not doing so leaves us with a stale osdmap and as a result we may miss our window for reestablishing the watch and lose notifies. MON=1 OSD=1: # cat linger-needmap.sh #!/bin/bash rbd create --size 1 test DEV=$(rbd map test) ceph osd out 0 rbd map dne/dne # obtain a new osdmap as a side effect (!) sleep 1 ceph osd in 0 rbd resize --size 2 test # rbd info test | grep size -> 2M # blockdev --getsize $DEV -> 1M N.B.: Not obtaining a new osdmap in between "osd out" and "osd in" above is enough to make it miss that resize notify, but that is a bug^Wlimitation of ceph watch/notify v1. Second, homeless lingering requests are now kicked just like those lingering requests whose mapping has changed. This is mainly to recognize that a homeless lingering request makes no sense and to preserve the invariant that a registered lingering request is not sitting on any of r_req_lru_item lists. This spares us a WARN_ON, which commit ba9d114ec557 ("libceph: clear r_req_lru_item in __unregister_linger_request()") tried to fix the _wrong_ way. Cc: stable@vger.kernel.org # 3.10+ Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Sage Weil <sage@redhat.com>
* | net: Add a struct net parameter to sock_create_kernEric W. Biederman2015-05-111-2/+2
|/ | | | | | | | This is long overdue, and is part of cleaning up how we allocate kernel sockets that don't reference count struct net. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* crush: straw2 bucket type with an efficient 64-bit crush_ln()Ilya Dryomov2015-04-224-0/+306
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is an improved straw bucket that correctly avoids any data movement between items A and B when neither A nor B's weights are changed. Said differently, if we adjust the weight of item C (including adding it anew or removing it completely), we will only see inputs move to or from C, never between other items in the bucket. Notably, there is not intermediate scaling factor that needs to be calculated. The mapping function is a simple function of the item weights. The below commits were squashed together into this one (mostly to avoid adding and then yanking a ~6000 lines worth of crush_ln_table): - crush: add a straw2 bucket type - crush: add crush_ln to calculate nature log efficently - crush: improve straw2 adjustment slightly - crush: change crush_ln to provide 32 more digits - crush: fix crush_get_bucket_item_weight and bucket destroy for straw2 - crush/mapper: fix divide-by-0 in straw2 (with div64_s64() for draw = ln / w and INT64_MIN -> S64_MIN - need to create a proper compat.h in ceph.git) Reflects ceph.git commits 242293c908e923d474910f2b8203fa3b41eb5a53, 32a1ead92efcd351822d22a5fc37d159c65c1338, 6289912418c4a3597a11778bcf29ed5415117ad9, 35fcb04e2945717cf5cfe150b9fa89cb3d2303a1, 6445d9ee7290938de1e4ee9563912a6ab6d8ee5f, b5921d55d16796e12d66ad2c4add7305f9ce2353. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* crush: ensuring at most num-rep osds are selectedIlya Dryomov2015-04-221-4/+12
| | | | | | | | | | | | | Crush temporary buffers are allocated as per replica size configured by the user. When there are more final osds (to be selected as per rule) than the replicas, buffer overlaps and it causes crash. Now, it ensures that at most num-rep osds are selected even if more number of osds are allowed by the rule. Reflects ceph.git commits 6b4d1aa99718e3b367496326c1e64551330fabc0, 234b066ba04976783d15ff2abc3e81b6cc06fb10. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* crush: drop unnecessary include from mapper.cIlya Dryomov2015-04-221-1/+0
| | | | Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* libceph: expose client options through debugfsIlya Dryomov2015-04-201-0/+24
| | | | | | Add a client_options attribute for showing libceph options. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* libceph, ceph: split ceph_show_options()Ilya Dryomov2015-04-201-0/+37
| | | | | | | | | Split ceph_show_options() into two pieces and move the piece responsible for printing client (libceph) options into net/ceph. This way people adding a libceph option wouldn't have to remember to update code in fs/ceph. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* libceph: don't overwrite specific con error msgsIlya Dryomov2015-04-201-12/+13
| | | | | | | | | | | | | - specific con->error_msg messages (e.g. "protocol version mismatch") end up getting overwritten by a catch-all "socket error on read / write", introduced in commit 3a140a0d5c4b ("libceph: report socket read/write error message") - "bad message sequence # for incoming message" loses to "bad crc" due to the fact that -EBADMSG is used for both Fix it, and tidy up con->error_msg assignments and pr_errs while at it. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
* Revert "libceph: use memalloc flags for net IO"Ilya Dryomov2015-04-071-8/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 89baaa570ab0b476db09408d209578cfed700e9f. Dirty page throttling should be sufficient for us in the general case so there is no need to use __GFP_MEMALLOC - it would be needed only in the swap-over-rbd case, which we currently don't support. (It would probably take approximately the commit that is being reverted to add that support, but we would also need the "swap" option to distinguish from the general case and make sure swap ceph_client-s aren't shared with anything else.) See ceph-devel threads [1] and [2] for the details of why enabling pfmemalloc reserves for all cases is a bad thing. On top of potential system lockups related to drained emergency reserves, this turned out to cause ceph lockups in case peers are on the same host and communicating via loopback due to sk_filter() dropping pfmemalloc skbs on the receiving side because the receiving loopback socket is not tagged with SOCK_MEMALLOC. [1] "SOCK_MEMALLOC vs loopback" http://www.spinics.net/lists/ceph-devel/msg22998.html [2] "[PATCH] libceph: don't set memalloc flags in loopback case" http://www.spinics.net/lists/ceph-devel/msg23392.html Conflicts: net/ceph/messenger.c [ context: tcp_nodelay option ] Cc: Mike Christie <michaelc@cs.wisc.edu> Cc: Mel Gorman <mgorman@suse.de> Cc: Sage Weil <sage@redhat.com> Cc: stable@vger.kernel.org # 3.18+, needs backporting Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Acked-by: Mike Christie <michaelc@cs.wisc.edu> Acked-by: Mel Gorman <mgorman@suse.de>
* Merge branch 'for-linus' of ↵Linus Torvalds2015-02-196-162/+54
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client Pull Ceph changes from Sage Weil: "On the RBD side, there is a conversion to blk-mq from Christoph, several long-standing bug fixes from Ilya, and some cleanup from Rickard Strandqvist. On the CephFS side there is a long list of fixes from Zheng, including improved session handling, a few IO path fixes, some dcache management correctness fixes, and several blocking while !TASK_RUNNING fixes. The core code gets a few cleanups and Chaitanya has added support for TCP_NODELAY (which has been used on the server side for ages but we somehow missed on the kernel client). There is also an update to MAINTAINERS to fix up some email addresses and reflect that Ilya and Zheng are doing most of the maintenance for RBD and CephFS these days. Do not be surprised to see a pull request come from one of them in the future if I am unavailable for some reason" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (27 commits) MAINTAINERS: update Ceph and RBD maintainers libceph: kfree() in put_osd() shouldn't depend on authorizer libceph: fix double __remove_osd() problem rbd: convert to blk-mq ceph: return error for traceless reply race ceph: fix dentry leaks ceph: re-send requests when MDS enters reconnecting stage ceph: show nocephx_require_signatures and notcp_nodelay options libceph: tcp_nodelay support rbd: do not treat standalone as flatten ceph: fix atomic_open snapdir ceph: properly mark empty directory as complete client: include kernel version in client metadata ceph: provide seperate {inode,file}_operations for snapdir ceph: fix request time stamp encoding ceph: fix reading inline data when i_size > PAGE_SIZE ceph: avoid block operation when !TASK_RUNNING (ceph_mdsc_close_sessions) ceph: avoid block operation when !TASK_RUNNING (ceph_get_caps) ceph: avoid block operation when !TASK_RUNNING (ceph_mdsc_sync) rbd: fix error paths in rbd_dev_refresh() ...
| * libceph: kfree() in put_osd() shouldn't depend on authorizerIlya Dryomov2015-02-191-2/+3
| | | | | | | | | | | | | | | | | | | | | | a255651d4cad ("ceph: ensure auth ops are defined before use") made kfree() in put_osd() conditional on the authorizer. A mechanical mistake most likely - fix it. Cc: Alex Elder <elder@linaro.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Sage Weil <sage@redhat.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: fix double __remove_osd() problemIlya Dryomov2015-02-191-8/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It turns out it's possible to get __remove_osd() called twice on the same OSD. That doesn't sit well with rb_erase() - depending on the shape of the tree we can get a NULL dereference, a soft lockup or a random crash at some point in the future as we end up touching freed memory. One scenario that I was able to reproduce is as follows: <osd3 is idle, on the osd lru list> <con reset - osd3> con_fault_finish() osd_reset() <osdmap - osd3 down> ceph_osdc_handle_map() <takes map_sem> kick_requests() <takes request_mutex> reset_changed_osds() __reset_osd() __remove_osd() <releases request_mutex> <releases map_sem> <takes map_sem> <takes request_mutex> __kick_osd_requests() __reset_osd() __remove_osd() <-- !!! A case can be made that osd refcounting is imperfect and reworking it would be a proper resolution, but for now Sage and I decided to fix this by adding a safe guard around __remove_osd(). Fixes: http://tracker.ceph.com/issues/8087 Cc: Sage Weil <sage@redhat.com> Cc: stable@vger.kernel.org # 3.9+: 7c6e6fc53e73: libceph: assert both regular and lingering lists in __remove_osd() Cc: stable@vger.kernel.org # 3.9+: cc9f1f518cec: libceph: change from BUG to WARN for __remove_osd() asserts Cc: stable@vger.kernel.org # 3.9+ Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Sage Weil <sage@redhat.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: tcp_nodelay supportChaitanya Huilgol2015-02-192-2/+28
| | | | | | | | | | | | | | | | | | | | | | TCP_NODELAY socket option set on connection sockets, disables Nagle’s algorithm and improves latency characteristics. tcp_nodelay(default)/notcp_nodelay option flags provided to enable/disable setting the socket option. Signed-off-by: Chaitanya Huilgol <chaitanya.huilgol@sandisk.com> [idryomov@redhat.com: NO_TCP_NODELAY -> TCP_NODELAY, minor adjustments] Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
| * libceph: use mon_client.c/put_generic_request() moreIlya Dryomov2015-02-191-2/+2
| | | | | | | | Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
| * libceph: nuke pool op infrastructureIlya Dryomov2015-02-193-148/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | On Mon, Dec 22, 2014 at 5:35 PM, Sage Weil <sage@newdream.net> wrote: > On Mon, 22 Dec 2014, Ilya Dryomov wrote: >> Actually, pool op stuff has been unused for over two years - looks like >> it was added for rbd create_snap and that got ripped out in 2012. It's >> unlikely we'd ever need to manage pools or snaps from the kernel client >> so I think it makes sense to nuke it. Sage? > > Yep! Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
* | mm: gup: use get_user_pages_unlockedAndrea Arcangeli2015-02-111-4/+2
|/ | | | | | | | | | | | This allows those get_user_pages calls to pass FAULT_FLAG_ALLOW_RETRY to the page fault in order to release the mmap_sem during the I/O. Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Andres Lagar-Cavilla <andreslc@google.com> Cc: Peter Feiner <pfeiner@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* libceph: fix sparse endianness warningsIlya Dryomov2015-01-082-2/+2
| | | | | | | The only real issue is the one in auth_x.c and it came with 3.19-rc1 merge. Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
* libceph: specify position of extent operationYan, Zheng2014-12-171-13/+6
| | | | | | | | | allow specifying position of extent operation in multi-operations osd request. This is required for cephfs to convert inline data to normal data (compare xattr, then write object). Signed-off-by: Yan, Zheng <zyan@redhat.com> Reviewed-by: Ilya Dryomov <idryomov@redhat.com>
* libceph: add CREATE osd operation supportYan, Zheng2014-12-171-20/+22
| | | | | | | | Add CEPH_OSD_OP_CREATE support. Also change libceph to not treat CEPH_OSD_OP_DELETE as an extent op and add an assert to that end. Signed-off-by: Yan, Zheng <zyan@redhat.com> Reviewed-by: Ilya Dryomov <idryomov@redhat.com>
* libceph: add SETXATTR/CMPXATTR osd operations supportYan, Zheng2014-12-171-0/+47
| | | | | Signed-off-by: Yan, Zheng <zyan@redhat.com> Reviewed-by: Ilya Dryomov <idryomov@redhat.com>
* libceph: require cephx message signature by defaultYan, Zheng2014-12-171-0/+13
| | | | | Signed-off-by: Yan, Zheng <zyan@redhat.com> Reviewed-by: Ilya Dryomov <idryomov@redhat.com>
* libceph: message signature supportYan, Zheng2014-12-173-3/+103
| | | | Signed-off-by: Yan, Zheng <zyan@redhat.com>
* libceph: store session key in cephx authorizerYan, Zheng2014-12-172-7/+12
| | | | | | | Session key is required when calculating message signature. Save the session key in authorizer, this avoid lookup ticket handler for each message Signed-off-by: Yan, Zheng <zyan@redhat.com>
* libceph: nuke ceph_kvfree()Ilya Dryomov2014-12-173-11/+3
| | | | | | | | | Use kvfree() from linux/mm.h instead, which is identical. Also fix the ceph_buffer comment: we will allocate with kmalloc() up to 32k - the value of PAGE_ALLOC_COSTLY_ORDER, but that really is just an implementation detail so don't mention it at all. Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
* libceph: change from BUG to WARN for __remove_osd() assertsIlya Dryomov2014-11-131-2/+2
| | | | | | | No reason to use BUG_ON for osd request list assertions. Signed-off-by: Ilya Dryomov <idryomov@redhat.com> Reviewed-by: Alex Elder <elder@linaro.org>
* libceph: clear r_req_lru_item in __unregister_linger_request()Ilya Dryomov2014-11-131-0/+2
| | | | | | | | | | | | | kick_requests() can put linger requests on the notarget list. This means we need to clear the much-overloaded req->r_req_lru_item in __unregister_linger_request() as well, or we get an assertion failure in ceph_osdc_release_request() - !list_empty(&req->r_req_lru_item). AFAICT the assumption was that registered linger requests cannot be on any of req->r_req_lru_item lists, but that's clearly not the case. Signed-off-by: Ilya Dryomov <idryomov@redhat.com> Reviewed-by: Alex Elder <elder@linaro.org>
* libceph: unlink from o_linger_requests when clearing r_osdIlya Dryomov2014-11-131-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | Requests have to be unlinked from both osd->o_requests (normal requests) and osd->o_linger_requests (linger requests) lists when clearing req->r_osd. Otherwise __unregister_linger_request() gets confused and we trip over a !list_empty(&osd->o_linger_requests) assert in __remove_osd(). MON=1 OSD=1: # cat remove-osd.sh #!/bin/bash rbd create --size 1 test DEV=$(rbd map test) ceph osd out 0 sleep 3 rbd map dne/dne # obtain a new osdmap as a side effect rbd unmap $DEV & # will block sleep 3 ceph osd in 0 Signed-off-by: Ilya Dryomov <idryomov@redhat.com> Reviewed-by: Alex Elder <elder@linaro.org>
* libceph: do not crash on large auth ticketsIlya Dryomov2014-11-131-37/+132
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Large (greater than 32k, the value of PAGE_ALLOC_COSTLY_ORDER) auth tickets will have their buffers vmalloc'ed, which leads to the following crash in crypto: [ 28.685082] BUG: unable to handle kernel paging request at ffffeb04000032c0 [ 28.686032] IP: [<ffffffff81392b42>] scatterwalk_pagedone+0x22/0x80 [ 28.686032] PGD 0 [ 28.688088] Oops: 0000 [#1] PREEMPT SMP [ 28.688088] Modules linked in: [ 28.688088] CPU: 0 PID: 878 Comm: kworker/0:2 Not tainted 3.17.0-vm+ #305 [ 28.688088] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007 [ 28.688088] Workqueue: ceph-msgr con_work [ 28.688088] task: ffff88011a7f9030 ti: ffff8800d903c000 task.ti: ffff8800d903c000 [ 28.688088] RIP: 0010:[<ffffffff81392b42>] [<ffffffff81392b42>] scatterwalk_pagedone+0x22/0x80 [ 28.688088] RSP: 0018:ffff8800d903f688 EFLAGS: 00010286 [ 28.688088] RAX: ffffeb04000032c0 RBX: ffff8800d903f718 RCX: ffffeb04000032c0 [ 28.688088] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8800d903f750 [ 28.688088] RBP: ffff8800d903f688 R08: 00000000000007de R09: ffff8800d903f880 [ 28.688088] R10: 18df467c72d6257b R11: 0000000000000000 R12: 0000000000000010 [ 28.688088] R13: ffff8800d903f750 R14: ffff8800d903f8a0 R15: 0000000000000000 [ 28.688088] FS: 00007f50a41c7700(0000) GS:ffff88011fc00000(0000) knlGS:0000000000000000 [ 28.688088] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 28.688088] CR2: ffffeb04000032c0 CR3: 00000000da3f3000 CR4: 00000000000006b0 [ 28.688088] Stack: [ 28.688088] ffff8800d903f698 ffffffff81392ca8 ffff8800d903f6e8 ffffffff81395d32 [ 28.688088] ffff8800dac96000 ffff880000000000 ffff8800d903f980 ffff880119b7e020 [ 28.688088] ffff880119b7e010 0000000000000000 0000000000000010 0000000000000010 [ 28.688088] Call Trace: [ 28.688088] [<ffffffff81392ca8>] scatterwalk_done+0x38/0x40 [ 28.688088] [<ffffffff81392ca8>] scatterwalk_done+0x38/0x40 [ 28.688088] [<ffffffff81395d32>] blkcipher_walk_done+0x182/0x220 [ 28.688088] [<ffffffff813990bf>] crypto_cbc_encrypt+0x15f/0x180 [ 28.688088] [<ffffffff81399780>] ? crypto_aes_set_key+0x30/0x30 [ 28.688088] [<ffffffff8156c40c>] ceph_aes_encrypt2+0x29c/0x2e0 [ 28.688088] [<ffffffff8156d2a3>] ceph_encrypt2+0x93/0xb0 [ 28.688088] [<ffffffff8156d7da>] ceph_x_encrypt+0x4a/0x60 [ 28.688088] [<ffffffff8155b39d>] ? ceph_buffer_new+0x5d/0xf0 [ 28.688088] [<ffffffff8156e837>] ceph_x_build_authorizer.isra.6+0x297/0x360 [ 28.688088] [<ffffffff8112089b>] ? kmem_cache_alloc_trace+0x11b/0x1c0 [ 28.688088] [<ffffffff8156b496>] ? ceph_auth_create_authorizer+0x36/0x80 [ 28.688088] [<ffffffff8156ed83>] ceph_x_create_authorizer+0x63/0xd0 [ 28.688088] [<ffffffff8156b4b4>] ceph_auth_create_authorizer+0x54/0x80 [ 28.688088] [<ffffffff8155f7c0>] get_authorizer+0x80/0xd0 [ 28.688088] [<ffffffff81555a8b>] prepare_write_connect+0x18b/0x2b0 [ 28.688088] [<ffffffff81559289>] try_read+0x1e59/0x1f10 This is because we set up crypto scatterlists as if all buffers were kmalloc'ed. Fix it. Cc: stable@vger.kernel.org Signed-off-by: Ilya Dryomov <idryomov@redhat.com> Reviewed-by: Sage Weil <sage@redhat.com>
* libceph: eliminate unnecessary allocation in process_one_ticket()Ilya Dryomov2014-10-311-15/+10
| | | | | | | | | | | Commit c27a3e4d667f ("libceph: do not hard code max auth ticket len") while fixing a buffer overlow tried to keep the same as much of the surrounding code as possible and introduced an unnecessary kmalloc() in the unencrypted ticket path. It is likely to fail on huge tickets, so get rid of it. Signed-off-by: Ilya Dryomov <idryomov@redhat.com> Reviewed-by: Sage Weil <sage@redhat.com>
* libceph: use memalloc flags for net IOMike Christie2014-10-301-1/+9
| | | | | | | | | | | | | | | | | | | | | | This patch has ceph's lib code use the memalloc flags. If the VM layer needs to write data out to free up memory to handle new allocation requests, the block layer must be able to make forward progress. To handle that requirement we use structs like mempools to reserve memory for objects like bios and requests. The problem is when we send/receive block layer requests over the network layer, net skb allocations can fail and the system can lock up. To solve this, the memalloc related flags were added. NBD, iSCSI and NFS uses these flags to tell the network/vm layer that it should use memory reserves to fullfill allcation requests for structs like skbs. I am running ceph in a bunch of VMs in my laptop, so this patch was not tested very harshly. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Reviewed-by: Ilya Dryomov <idryomov@redhat.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2014-10-159-228/+153
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client Pull Ceph updates from Sage Weil: "There is the long-awaited discard support for RBD (Guangliang Zhao, Josh Durgin), a pile of RBD bug fixes that didn't belong in late -rc's (Ilya Dryomov, Li RongQing), a pile of fs/ceph bug fixes and performance and debugging improvements (Yan, Zheng, John Spray), and a smattering of cleanups (Chao Yu, Fabian Frederick, Joe Perches)" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (40 commits) ceph: fix divide-by-zero in __validate_layout() rbd: rbd workqueues need a resque worker libceph: ceph-msgr workqueue needs a resque worker ceph: fix bool assignments libceph: separate multiple ops with commas in debugfs output libceph: sync osd op definitions in rados.h libceph: remove redundant declaration ceph: additional debugfs output ceph: export ceph_session_state_name function ceph: include the initial ACL in create/mkdir/mknod MDS requests ceph: use pagelist to present MDS request data libceph: reference counting pagelist ceph: fix llistxattr on symlink ceph: send client metadata to MDS ceph: remove redundant code for max file size verification ceph: remove redundant io_iter_advance() ceph: move ceph_find_inode() outside the s_mutex ceph: request xattrs if xattr_version is zero rbd: set the remaining discard properties to enable support rbd: use helpers to handle discard for layered images correctly ...
| * libceph: ceph-msgr workqueue needs a resque workerIlya Dryomov2014-10-141-1/+5
| | | | | | | | | | | | | | | | | | | | | | Commit f363e45fd118 ("net/ceph: make ceph_msgr_wq non-reentrant") effectively removed WQ_MEM_RECLAIM flag from ceph_msgr_wq. This is wrong - libceph is very much a memory reclaim path, so restore it. Cc: stable@vger.kernel.org # needs backporting for < 3.12 Signed-off-by: Ilya Dryomov <idryomov@redhat.com> Tested-by: Micha Krause <micha@krausam.de> Reviewed-by: Sage Weil <sage@redhat.com>
| * libceph: separate multiple ops with commas in debugfs outputIlya Dryomov2014-10-141-1/+2
| | | | | | | | | | | | | | | | For requests with multiple ops, separate ops with commas instead of \t, which is a field separator here. Signed-off-by: Ilya Dryomov <idryomov@redhat.com> Reviewed-by: Sage Weil <sage@redhat.com>
| * libceph: sync osd op definitions in rados.hIlya Dryomov2014-10-142-132/+8
| | | | | | | | | | | | | | | | Bring in missing osd ops and strings, use macros to eliminate multiple points of maintenance. Signed-off-by: Ilya Dryomov <idryomov@redhat.com> Reviewed-by: Sage Weil <sage@redhat.com>
| * libceph: reference counting pagelistYan, Zheng2014-10-142-5/+6
| | | | | | | | | | | | | | this allow pagelist to present data that may be sent multiple times. Signed-off-by: Yan, Zheng <zyan@redhat.com> Reviewed-by: Sage Weil <sage@redhat.com>
| * libceph: don't try checking queue_work() return valueIlya Dryomov2014-10-141-10/+5
| | | | | | | | | | | | | | | | | | queue_work() doesn't "fail to queue", it returns false if work was already on a queue, which can't happen here since we allocate event_work right before we queue it. So don't bother at all. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: Convert pr_warning to pr_warnJoe Perches2014-10-145-37/+39
| | | | | | | | | | | | | | | | | | | | | | | | Use the more common pr_warn. Other miscellanea: o Coalesce formats o Realign arguments Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
| * libceph: fix a use after free issue in osdmap_set_max_osdLi RongQing2014-10-141-16/+16
| | | | | | | | | | | | | | | | | | | | | | If the state variable is krealloced successfully, map->osd_state will be freed, once following two reallocation failed, and exit the function without resetting map->osd_state, map->osd_state become a wild pointer. fix it by resetting them after krealloc successfully. Signed-off-by: Li RongQing <roy.qing.li@gmail.com> Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
| * libceph: select CRYPTO_CBC in addition to CRYPTO_AESIlya Dryomov2014-10-141-0/+1
| | | | | | | | | | | | | | | | | | | | We want "cbc(aes)" algorithm, so select CRYPTO_CBC too, not just CRYPTO_AES. Otherwise on !CRYPTO_CBC kernels we fail rbd map/mount with libceph: error -2 building auth method x request Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
| * libceph: resend lingering requests with a new tidIlya Dryomov2014-10-141-19/+54
| | | | | | | | | | | | | | | | | | | | | | | | | | Both not yet registered (r_linger && list_empty(&r_linger_item)) and registered linger requests should use the new tid on resend to avoid the dup op detection logic on the OSDs, yet we were doing this only for "registered" case. Factor out and simplify the "registered" logic and use the new helper for "not registered" case as well. Fixes: http://tracker.ceph.com/issues/8806 Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: abstract out ceph_osd_request enqueue logicIlya Dryomov2014-10-141-7/+17
| | | | | | | | | | | | | | Introduce __enqueue_request() and switch to it. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
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