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2012-03-209p: make register_filesystem() the last failure exitAl Viro1-8/+8
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20usbfs: kill racy detection of simple_pin_fs()Al Viro1-9/+1
can check MS_KERNMOUNT in flags now Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20make simple_pin_fs() pass MS_KERNMOUNT - it's a kernel-internal oneAl Viro1-1/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20ibmasmfs: make register_filesystem the last failure exitAl Viro1-6/+5
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20spufs: make register_filesystem the last potential failure exitAl Viro1-5/+5
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20kill reiserfs_fs_{i,sb}.hAl Viro3-619/+597
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20move private bits of reiserfs_fs.h to fs/reiserfs/reiserfs.hAl Viro29-2362/+2354
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20kill pointless includes of reiserfs_fs_{i,sb}.hAl Viro5-6/+0
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20move reiserfs_acl.h to fs/reiserfs/acl.hAl Viro7-6/+6
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20take private bits of reiserfs_xattr.h to fs/reiserfs/xattr.hAl Viro11-137/+133
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20vfs: take path_get_longterm() out of write_seqcount scopeAl Viro1-12/+15
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20no need to play with fs->seq in exit_fs()Al Viro1-2/+0
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20switch touch_atime to struct pathAl Viro8-19/+21
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20switch unix_sock to struct pathAl Viro4-29/+19
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20constify path argument of trace_seq_path()Al Viro2-3/+3
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20constify path argument of audit_log_d_path()Al Viro2-2/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20aio: fix the comment in aio_kick_handler()Al Viro1-1/+1
It should've been changed when queue_work() became queue_delayed_work(..., 0) in there. It's always had been about not needing a delay, not about not using specific function... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20aio: don't bother with cancel_delayed_work() in exit_aio()Al Viro1-4/+0
__put_ioctx() will cover it anyway. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20aio: use cancel_delayed_work_sync()Al Viro1-2/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20aio: aio_nr_lock is taken only synchronously nowAl Viro1-3/+3
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20aio: aio_nr decrements don't need to be delayedAl Viro1-28/+14
we can do that right in __put_ioctx(); as the result, the loop in ioctx_alloc() can be killed. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20aio: don't bother with async freeing on failure in ioctx_alloc()Al Viro1-7/+5
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20fs: initial qnx6fs additionKai Bankett13-0/+1668
Adds support for qnx6fs readonly support to the linux kernel. * Mount option The option mmi_fs can be used to mount Harman Becker/Audi MMI 3G HDD qnx6fs filesystems. * Documentation A high level filesystem stucture description can be found in the Documentation/filesystems directory. (qnx6.txt) * Additional features - Active (stable) superblock selection - Superblock checksum check (enforced) - Supports mount of qnx6 filesystems with to host different endianess - Automatic endianess detection - Longfilename support (with non-enfocing crc check) - All blocksizes (512, 1024, 2048 and 4096 supported) Signed-off-by: Kai Bankett <chaosman@ontika.net> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20qnx4fs: small cleanupKai Bankett2-31/+0
Small qnx4 cleanup patch. - removes .writepage, .write_begin and .write_end (+callback functions) - removes '.' path checking in namei.c (handled on upper layers) Signed-off-by: Kai Bankett <chaosman@ontika.net> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20vfs: d_alloc_root() goneAl Viro3-25/+6
all callers converted to d_make_root() by now Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20tidy up after d_make_root() conversionAl Viro6-53/+26
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20minixfs: switch to d_make_root()Al Viro1-16/+12
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20hfsplus: switch to d_make_root()Al Viro1-8/+9
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20fat: switch to d_make_root()Al Viro1-4/+4
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20ntfs: switch to d_make_root()Al Viro1-3/+4
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20switch open-coded instances of d_make_root() to new helperAl Viro64-264/+105
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20procfs: clean proc_fill_super() upAl Viro1-4/+3
First of all, there's no need to zero ->i_uid/->i_gid on root inode - both had been set to zero already. Moreover, let's take the iput() on failure to the failure exit it belongs to... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20... and the same failure exits cleanup for ocfs2Al Viro1-6/+4
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20coda: clean failure exits in coda_fill_super()Al Viro1-4/+1
same as for cifs, move iput() to the right place, make it unconditional Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20clean up the failure exits in cifs_read_super()Al Viro1-4/+1
no need to make that iput() conditional, just take it to the right place... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20vfs: turn generic_drop_inode() into static inlineAl Viro2-12/+4
Once upon a time it used to be much bigger, but these days there's no point whatsoever keeping it in fs/inode.c, especially since it's not even needed as initializer for ->drop_inode() - it's the default and leaving ->drop_inode NULL will do just as well. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20ecryptfs: don't bother with ->drop_inode()Al Viro1-1/+0
generic_drop_inode() is the default Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20vfs: drop_file_write_access() made staticAl Viro2-3/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-20vfs: check i_nlink limits in vfs_{mkdir,rename_dir,link}Al Viro26-149/+46
New field of struct super_block - ->s_max_links. Maximal allowed value of ->i_nlink or 0; in the latter case all checks still need to be done in ->link/->mkdir/->rename instances. Note that this limit applies both to directoris and to non-directories. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-18Linux 3.3Linus Torvalds1-1/+1
2012-03-18Don't limit non-nested epoll pathsJason Baron1-0/+4
Commit 28d82dc1c4ed ("epoll: limit paths") that I did to limit the number of possible wakeup paths in epoll is causing a few applications to longer work (dovecot for one). The original patch is really about limiting the amount of epoll nesting (since epoll fds can be attached to other fds). Thus, we probably can allow an unlimited number of paths of depth 1. My current patch limits it at 1000. And enforce the limits on paths that have a greater depth. This is captured in: https://bugzilla.redhat.com/show_bug.cgi?id=681578 Signed-off-by: Jason Baron <jbaron@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-17netfilter: ctnetlink: fix race between delete and timeout expirationPablo Neira Ayuso1-11/+12
Kerin Millar reported hardlockups while running `conntrackd -c' in a busy firewall. That system (with several processors) was acting as backup in a primary-backup setup. After several tries, I found a race condition between the deletion operation of ctnetlink and timeout expiration. This patch fixes this problem. Tested-by: Kerin Millar <kerframil@gmail.com> Reported-by: Kerin Millar <kerframil@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-16ipv6: Don't dev_hold(dev) in ip6_mc_find_dev_rcu.RongQing.Li1-1/+0
ip6_mc_find_dev_rcu() is called with rcu_read_lock(), so don't need to dev_hold(). With dev_hold(), not corresponding dev_put(), will lead to leak. [ bug introduced in 96b52e61be1 (ipv6: mcast: RCU conversions) ] Signed-off-by: RongQing.Li <roy.qing.li@gmail.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-16nilfs2: fix NULL pointer dereference in nilfs_load_super_block()Ryusuke Konishi1-0/+1
According to the report from Slicky Devil, nilfs caused kernel oops at nilfs_load_super_block function during mount after he shrank the partition without resizing the filesystem: BUG: unable to handle kernel NULL pointer dereference at 00000048 IP: [<d0d7a08e>] nilfs_load_super_block+0x17e/0x280 [nilfs2] *pde = 00000000 Oops: 0000 [#1] PREEMPT SMP ... Call Trace: [<d0d7a87b>] init_nilfs+0x4b/0x2e0 [nilfs2] [<d0d6f707>] nilfs_mount+0x447/0x5b0 [nilfs2] [<c0226636>] mount_fs+0x36/0x180 [<c023d961>] vfs_kern_mount+0x51/0xa0 [<c023ddae>] do_kern_mount+0x3e/0xe0 [<c023f189>] do_mount+0x169/0x700 [<c023fa9b>] sys_mount+0x6b/0xa0 [<c04abd1f>] sysenter_do_call+0x12/0x28 Code: 53 18 8b 43 20 89 4b 18 8b 4b 24 89 53 1c 89 43 24 89 4b 20 8b 43 20 c7 43 2c 00 00 00 00 23 75 e8 8b 50 68 89 53 28 8b 54 b3 20 <8b> 72 48 8b 7a 4c 8b 55 08 89 b3 84 00 00 00 89 bb 88 00 00 00 EIP: [<d0d7a08e>] nilfs_load_super_block+0x17e/0x280 [nilfs2] SS:ESP 0068:ca9bbdcc CR2: 0000000000000048 This turned out due to a defect in an error path which runs if the calculated location of the secondary super block was invalid. This patch fixes it and eliminates the reported oops. Reported-by: Slicky Devil <slicky.dvl@gmail.com> Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Tested-by: Slicky Devil <slicky.dvl@gmail.com> Cc: <stable@vger.kernel.org> [2.6.30+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-16nilfs2: clamp ns_r_segments_percentage to [1, 99]Haogang Chen1-0/+6
ns_r_segments_percentage is read from the disk. Bogus or malicious value could cause integer overflow and malfunction due to meaningless disk usage calculation. This patch reports error when mounting such bogus volumes. Signed-off-by: Haogang Chen <haogangchen@gmail.com> Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-16afs: Remote abort can cause BUG in rxrpc codeAnton Blanchard1-0/+3
When writing files to afs I sometimes hit a BUG: kernel BUG at fs/afs/rxrpc.c:179! With a backtrace of: afs_free_call afs_make_call afs_fs_store_data afs_vnode_store_data afs_write_back_from_locked_page afs_writepages_region afs_writepages The cause is: ASSERT(skb_queue_empty(&call->rx_queue)); Looking at a tcpdump of the session the abort happens because we are exceeding our disk quota: rx abort fs reply store-data error diskquota exceeded (32) So the abort error is valid. We hit the BUG because we haven't freed all the resources for the call. By freeing any skbs in call->rx_queue before calling afs_free_call we avoid hitting leaking memory and avoid hitting the BUG. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: David Howells <dhowells@redhat.com> Cc: <stable@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-16afs: Read of file returns EBADMSGAnton Blanchard1-1/+1
A read of a large file on an afs mount failed: # cat junk.file > /dev/null cat: junk.file: Bad message Looking at the trace, call->offset wrapped since it is only an unsigned short. In afs_extract_data: _enter("{%u},{%zu},%d,,%zu", call->offset, len, last, count); ... if (call->offset < count) { if (last) { _leave(" = -EBADMSG [%d < %zu]", call->offset, count); return -EBADMSG; } Which matches the trace: [cat ] ==> afs_extract_data({65132},{524},1,,65536) [cat ] <== afs_extract_data() = -EBADMSG [0 < 65536] call->offset went from 65132 to 0. Fix this by making call->offset an unsigned int. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: David Howells <dhowells@redhat.com> Cc: <stable@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-16C6X: remove dead code from entry.SMark Salter1-27/+0
The ENDPROC() on sys_fadvise64_c6x() in arch/c6x/kernel/entry.S is outside of the conditional block with the matching ENTRY() macro. This leads a newer (v2.22 vs. v2.20) assembler to complain: /tmp/ccGZBaPT.s: Assembler messages: /tmp/ccGZBaPT.s: Error: .size expression for sys_fadvise64_c6x does not evaluate to a constant The conditional block became dead code when c6x switched to generic unistd.h and should be removed along with the offending ENDPROC(). Signed-off-by: Mark Salter <msalter@redhat.com> Acked-by: David Howells <dhowells@redhat.com>
2012-03-16wimax/i2400m: fix erroneous NETDEV_TX_BUSY useEric Dumazet1-20/+10
A driver start_xmit() method cannot free skb and return NETDEV_TX_BUSY, since caller is going to reuse freed skb. In fact netif_tx_stop_queue() / netif_stop_queue() is needed before returning NETDEV_TX_BUSY or you can trigger a ksoftirqd fatal loop. In case of memory allocation error, only safe way is to drop the packet and return NETDEV_TX_OK Also increments tx_dropped counter Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-16net/hyperv: fix erroneous NETDEV_TX_BUSY useEric Dumazet1-2/+2
A driver start_xmit() method cannot free skb and return NETDEV_TX_BUSY, since caller is going to reuse freed skb. This is mostly a revert of commit bf769375c (staging: hv: fix the return status of netvsc_start_xmit()) In fact netif_tx_stop_queue() / netif_stop_queue() is needed before returning NETDEV_TX_BUSY or you can trigger a ksoftirqd fatal loop. In case of memory allocation error, only safe way is to drop the packet and return NETDEV_TX_OK Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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