- Jun 24, 2010
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Prasanna S. Panchamukhi authored
Such NULL pointer dereference can occur when the driver was fixing the read errors/bad blocks and the disk was physically removed causing a system crash. This patch check if the rcu_dereference() returns valid rdev before accessing it in fix_read_error(). Cc: stable@kernel.org Signed-off-by:
Prasanna S. Panchamukhi <prasanna.panchamukhi@riverbed.com> Signed-off-by:
Rob Becker <rbecker@riverbed.com> Signed-off-by:
NeilBrown <neilb@suse.de>
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NeilBrown authored
Commit b821eaa5 broke partition detection for md arrays. The logic was almost right. However if revalidate_disk is called when the device is not yet open, bdev->bd_disk won't be set, so the flush_disk() Call will not set bd_invalidated. So when md_open is called we still need to ensure that ->bd_invalidated gets set. This is easily done with a call to check_disk_size_change in the place where the offending commit removed check_disk_change. At the important times, the size will have changed from 0 to non-zero, so check_disk_size_change will set bd_invalidated. Tested-by:
Duncan <1i5t5.duncan@cox.net> Reported-by:
Duncan <1i5t5.duncan@cox.net> Signed-off-by:
NeilBrown <neilb@suse.de>
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- Jun 12, 2010
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: wimax/i2400m: fix missing endian correction read in fw loader net8139: fix a race at the end of NAPI pktgen: Fix accuracy of inter-packet delay. pkt_sched: gen_estimator: add a new lock net: deliver skbs on inactive slaves to exact matches ipv6: fix ICMP6_MIB_OUTERRORS r8169: fix mdio_read and update mdio_write according to hw specs gianfar: Revive the driver for eTSEC devices (disable timestamping) caif: fix a couple range checks phylib: Add support for the LXT973 phy. net: Print num_rx_queues imbalance warning only when there are allocated queues
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6Linus Torvalds authored
* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: PM / x86: Save/restore MISC_ENABLE register
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git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstableLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: Btrfs: The file argument for fsync() is never null Btrfs: handle ERR_PTR from posix_acl_from_xattr() Btrfs: avoid BUG when dropping root and reference in same transaction Btrfs: prohibit a operation of changing acl's mask when noacl mount option used Btrfs: should add a permission check for setfacl Btrfs: btrfs_lookup_dir_item() can return ERR_PTR Btrfs: btrfs_read_fs_root_no_name() returns ERR_PTRs Btrfs: unwind after btrfs_start_transaction() errors Btrfs: btrfs_iget() returns ERR_PTR Btrfs: handle kzalloc() failure in open_ctree() Btrfs: handle error returns from btrfs_lookup_dir_item() Btrfs: Fix BUG_ON for fs converted from extN Btrfs: Fix null dereference in relocation.c Btrfs: fix remap_file_pages error Btrfs: uninitialized data is check_path_shared() Btrfs: fix fallocate regression Btrfs: fix loop device on top of btrfs
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git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: PCI: clear bridge resource range if BIOS assigned bad one PCI: hotplug/cpqphp, fix NULL dereference Revert "PCI: create function symlinks in /sys/bus/pci/slots/N/" PCI: change resource collision messages from KERN_ERR to KERN_INFO
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Yinghai Lu authored
Yannick found that video does not work with 2.6.34. The cause of this bug was that the BIOS had assigned the wrong range to the PCI bridge above the video device. Before 2.6.34 the kernel would have shrunk the size of the bridge window, but since d65245c3 PCI: don't shrink bridge resources the kernel will avoid shrinking BIOS ranges. So zero out the old range if we fail to claim it at boot time; this will cause us to allocate a new range at startup, restoring the 2.6.34 behavior. Fixes regression https://bugzilla.kernel.org/show_bug.cgi?id=16009. Reported-by:
Yannick <yannick.roehlly@free.fr> Acked-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
Yinghai Lu <yinghai@kernel.org> Signed-off-by:
Jesse Barnes <jbarnes@virtuousgeek.org>
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Jiri Slaby authored
There are devices out there which are PCI Hot-plug controllers with compaq PCI IDs, but are not bridges, hence have pdev->subordinate NULL. But cpqphp expects the pointer to be non-NULL. Add a check to the probe function to avoid oopses like: BUG: unable to handle kernel NULL pointer dereference at 00000050 IP: [<f82e3c41>] cpqhpc_probe+0x951/0x1120 [cpqphp] *pdpt = 0000000033779001 *pde = 0000000000000000 ... The device here was: 00:0b.0 PCI Hot-plug controller [0804]: Compaq Computer Corporation PCI Hotplug Controller [0e11:a0f7] (rev 11) Subsystem: Compaq Computer Corporation Device [0e11:a2f8] Signed-off-by:
Jiri Slaby <jslaby@suse.cz> Cc: Greg KH <greg@kroah.com> Signed-off-by:
Jesse Barnes <jbarnes@virtuousgeek.org>
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Jesse Barnes authored
This reverts commit 75568f80 . Since they're just a convenience anyway, remove these symlinks since they're causing duplicate filename errors in the wild. Acked-by:
Alex Chiang <achiang@canonical.com> Signed-off-by:
Jesse Barnes <jbarnes@virtuousgeek.org>
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Bjorn Helgaas authored
We can often deal with PCI resource issues by moving devices around. In that case, there's no point in alarming the user with messages like these. There are many bug reports where the message itself is the only problem, e.g., https://bugs.launchpad.net/ubuntu/+source/linux/+bug/413419 . Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
Jesse Barnes <jbarnes@virtuousgeek.org>
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Dan Carpenter authored
The "file" argument for fsync is never null so we can remove this check. What drew my attention here is that 7ea80859 : "drop unused dentry argument to ->fsync" introduced an unconditional dereference at the start of the function and that generated a smatch warning. Signed-off-by:
Dan Carpenter <error27@gmail.com> Signed-off-by:
Chris Mason <chris.mason@oracle.com>
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Dan Carpenter authored
posix_acl_from_xattr() returns both ERR_PTRs and null, but it's OK to pass null values to set_cached_acl() Signed-off-by:
Dan Carpenter <error27@gmail.com> Signed-off-by:
Chris Mason <chris.mason@oracle.com>
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Sage Weil authored
If btrfs_ioctl_snap_destroy() deletes a snapshot but finishes with end_transaction(), the cleaner kthread may come in and drop the root in the same transaction. If that's the case, the root's refs still == 1 in the tree when btrfs_del_root() deletes the item, because commit_fs_roots() hasn't updated it yet (that happens during the commit). This wasn't a problem before only because btrfs_ioctl_snap_destroy() would commit the transaction before dropping the dentry reference, so the dead root wouldn't get queued up until after the fs root item was updated in the btree. Since it is not an error to drop the root reference and the root in the same transaction, just drop the BUG_ON() in btrfs_del_root(). Signed-off-by:
Sage Weil <sage@newdream.net> Signed-off-by:
Chris Mason <chris.mason@oracle.com>
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Shi Weihua authored
when used Posix File System Test Suite(pjd-fstest) to test btrfs, some cases about setfacl failed when noacl mount option used. I simplified used commands in pjd-fstest, and the following steps can reproduce it. ------------------------ # cd btrfs-part/ # mkdir aaa # setfacl -m m::rw aaa <- successed, but not expected by pjd-fstest. ------------------------ I checked ext3, a warning message occured, like as: setfacl: aaa/: Operation not supported Certainly, it's expected by pjd-fstest. So, i compared acl.c of btrfs and ext3. Based on that, a patch created. Fortunately, it works. Signed-off-by:
Shi Weihua <shiwh@cn.fujitsu.com> Signed-off-by:
Chris Mason <chris.mason@oracle.com>
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Shi Weihua authored
On btrfs, do the following ------------------ # su user1 # cd btrfs-part/ # touch aaa # getfacl aaa # file: aaa # owner: user1 # group: user1 user::rw- group::rw- other::r-- # su user2 # cd btrfs-part/ # setfacl -m u::rwx aaa # getfacl aaa # file: aaa # owner: user1 # group: user1 user::rwx <- successed to setfacl group::rw- other::r-- ------------------ but we should prohibit it that user2 changing user1's acl. In fact, on ext3 and other fs, a message occurs: setfacl: aaa: Operation not permitted This patch fixed it. Signed-off-by:
Shi Weihua <shiwh@cn.fujitsu.com> Signed-off-by:
Chris Mason <chris.mason@oracle.com>
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Dan Carpenter authored
btrfs_lookup_dir_item() can return either ERR_PTRs or null. Signed-off-by:
Dan Carpenter <error27@gmail.com> Signed-off-by:
Chris Mason <chris.mason@oracle.com>
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Dan Carpenter authored
btrfs_read_fs_root_no_name() returns ERR_PTRs on error so I added a check for that. It's not clear to me if it can also return NULL pointers or not so I left the original NULL pointer check as is. Signed-off-by:
Dan Carpenter <error27@gmail.com> Signed-off-by:
Chris Mason <chris.mason@oracle.com>
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Dan Carpenter authored
This was added by a22285a6 : "Btrfs: Integrate metadata reservation with start_transaction". If we goto out here then we skip all the unwinding and there are locks still held etc. Signed-off-by:
Dan Carpenter <error27@gmail.com> Signed-off-by:
Chris Mason <chris.mason@oracle.com>
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Dan Carpenter authored
btrfs_iget() returns an ERR_PTR() on failure and not null. Signed-off-by:
Dan Carpenter <error27@gmail.com> Signed-off-by:
Chris Mason <chris.mason@oracle.com>
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Dan Carpenter authored
Unwind and return -ENOMEM if the allocation fails here. Signed-off-by:
Dan Carpenter <error27@gmail.com> Signed-off-by:
Chris Mason <chris.mason@oracle.com>
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Dan Carpenter authored
If btrfs_lookup_dir_item() fails, we should can just let the mount fail with an error. Signed-off-by:
Dan Carpenter <error27@gmail.com> Signed-off-by:
Chris Mason <chris.mason@oracle.com>
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Yan, Zheng authored
Tree blocks can live in data block groups in FS converted from extN. So it's easy to trigger the BUG_ON. Signed-off-by:
Yan Zheng <zheng.yan@oracle.com> Signed-off-by:
Chris Mason <chris.mason@oracle.com>
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Yan, Zheng authored
Fix a potential null dereference in relocation.c Signed-off-by:
Yan Zheng <zheng.yan@oracle.com> Acked-by:
Dan Carpenter <error27@gmail.com> Signed-off-by:
Chris Mason <chris.mason@oracle.com>
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Inaky Perez-Gonzalez authored
i2400m_fw_hdr_check() was accessing hardware field bcf_hdr->module_type (little endian 32) without converting to host byte sex. Reported-by:
Данилин Михаил <mdanilin@nsg.net.ru> Signed-off-by:
Inaky Perez-Gonzalez <inaky@linux.intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6Linus Torvalds authored
* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6: kbuild: Create output directory in Makefile.modbuiltin kbuild: Generate modules.builtin in make modules
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git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6Linus Torvalds authored
* 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6: pcmcia: avoid validate_cis failure on CIS override pcmcia: dev_node removal bugfix pcmcia: yenta_socket.c Remove extra #ifdef CONFIG_YENTA_TI pcmcia: only keep saved I365_CSCINT flag if there is no PCI irq
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-clientLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: ceph: try to send partial cap release on cap message on missing inode ceph: release cap on import if we don't have the inode ceph: fix misleading/incorrect debug message ceph: fix atomic64_t initialization on ia64 ceph: fix lease revocation when seq doesn't match ceph: fix f_namelen reported by statfs ceph: fix memory leak in statfs ceph: fix d_subdirs ordering problem
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- Jun 11, 2010
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Miao Xie authored
when we use remap_file_pages() to remap a file, remap_file_pages always return error. It is because btrfs didn't set VM_CAN_NONLINEAR for vma. Signed-off-by:
Miao Xie <miaox@cn.fujitsu.com> Signed-off-by:
Chris Mason <chris.mason@oracle.com>
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Dan Carpenter authored
refs can be used with uninitialized data if btrfs_lookup_extent_info() fails on the first pass through the loop. In the original code if that happens then check_path_shared() probably returns 1, this patch changes it to return 1 for safety. Signed-off-by:
Dan Carpenter <error27@gmail.com> Signed-off-by:
Chris Mason <chris.mason@oracle.com>
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Josef Bacik authored
Seems that when btrfs_fallocate was converted to use the new ENOSPC stuff we dropped passing the mode to the function that actually does the preallocation. This breaks anybody who wants to use FALLOC_FL_KEEP_SIZE. Thanks, Signed-off-by:
Josef Bacik <josef@redhat.com> Signed-off-by:
Chris Mason <chris.mason@oracle.com>
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Miao Xie authored
We cannot use the loop device which has been connected to a file in the btrf The reproduce steps is following: # dd if=/dev/zero of=vdev0 bs=1M count=1024 # losetup /dev/loop0 vdev0 # mkfs.btrfs /dev/loop0 ... failed to zero device start -5 The reason is that the btrfs don't implement either ->write_begin or ->write the VFS API, so we fix it by setting ->write to do_sync_write(). Signed-off-by:
Miao Xie <miaox@cn.fujitsu.com> Signed-off-by:
Chris Mason <chris.mason@oracle.com>
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Figo.zhang authored
fix a race at the end of NAPI complete processing, it had better do __napi_complete() first before re-enable interrupt. Signed-off-by:
Figo.zhang <figo1802@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Daniel Turull authored
This patch correct a bug in the delay of pktgen. It makes sure the inter-packet interval is accurate. Signed-off-by:
Daniel Turull <daniel.turull@gmail.com> Signed-off-by:
Robert Olsson <robert.olsson@its.uu.se> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Eric Dumazet authored
gen_kill_estimator() / gen_new_estimator() is not always called with RTNL held. net/netfilter/xt_RATEEST.c is one user of these API that do not hold RTNL, so random corruptions can occur between "tc" and "iptables". Add a new fine grained lock instead of trying to use RTNL in netfilter. Signed-off-by:
Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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John Fastabend authored
Currently, the accelerated receive path for VLAN's will drop packets if the real device is an inactive slave and is not one of the special pkts tested for in skb_bond_should_drop(). This behavior is different then the non-accelerated path and for pkts over a bonded vlan. For example, vlanx -> bond0 -> ethx will be dropped in the vlan path and not delivered to any packet handlers at all. However, bond0 -> vlanx -> ethx and bond0 -> ethx will be delivered to handlers that match the exact dev, because the VLAN path checks the real_dev which is not a slave and netif_recv_skb() doesn't drop frames but only delivers them to exact matches. This patch adds a sk_buff flag which is used for tagging skbs that would previously been dropped and allows the skb to continue to skb_netif_recv(). Here we add logic to check for the deliver_no_wcard flag and if it is set only deliver to handlers that match exactly. This makes both paths above consistent and gives pkt handlers a way to identify skbs that come from inactive slaves. Without this patch in some configurations skbs will be delivered to handlers with exact matches and in others be dropped out right in the vlan path. I have tested the following 4 configurations in failover modes and load balancing modes. # bond0 -> ethx # vlanx -> bond0 -> ethx # bond0 -> vlanx -> ethx # bond0 -> ethx | vlanx -> -- Signed-off-by:
John Fastabend <john.r.fastabend@intel.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Sage Weil authored
If we have enough memory to allocate a new cap release message, do so, so that we can send a partial release message immediately. This keeps us from making the MDS wait when the cap release it needs is in a partially full release message. If we fail because of ENOMEM, oh well, they'll just have to wait a bit longer. Signed-off-by:
Sage Weil <sage@newdream.net>
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Sage Weil authored
If we get an IMPORT that give us a cap, but we don't have the inode, queue a release (and try to send it immediately) so that the MDS doesn't get stuck waiting for us. Signed-off-by:
Sage Weil <sage@newdream.net>
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Sage Weil authored
Nothing is released here: the caps message is simply ignored in this case. Signed-off-by:
Sage Weil <sage@newdream.net>
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