- 20 Nov, 2016 40 commits
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Jeff Mahoney authored
commit 325c50e3 upstream. If the subvol/snapshot create/destroy ioctls are passed a regular file with execute permissions set, we'll eventually Oops while trying to do inode->i_op->lookup via lookup_one_len. This patch ensures that the file descriptor refers to a directory. Fixes: cb8e7090 (Btrfs: Fix subvolume creation locking rules) Fixes: 76dda93c (Btrfs: add snapshot/subvolume destroy ioctl) Signed-off-by:
Jeff Mahoney <jeffm@suse.com> Signed-off-by:
Chris Mason <clm@fb.com> Signed-off-by:
Ben Hutchings <ben@decadent.org.uk>
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Peter Rosin authored
commit 463e8f84 upstream. The cached value of the last selected channel prevents retries on the next call, even on failure to update the selected channel. Fix that. Signed-off-by:
Peter Rosin <peda@axentia.se> Signed-off-by:
Wolfram Sang <wsa@the-dreams.de> [bwh: Backported to 3.16: adjust context] Signed-off-by:
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Yadi.hu authored
commit 371a0153 upstream. the eg20t driver call request_irq() function before the pch_base_address, base address of i2c controller's register, is assigned an effective value. there is one possible scenario that an interrupt which isn't inside eg20t arrives immediately after request_irq() is executed when i2c controller shares an interrupt number with others. since the interrupt handler pch_i2c_handler() has already active as shared action, it will be called and read its own register to determine if this interrupt is from itself. At that moment, since base address of i2c registers is not remapped in kernel space yet,so the INT handler will access an illegal address and then a error occurs. Signed-off-by:
Yadi.hu <yadi.hu@windriver.com> Signed-off-by:
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Al Viro authored
commit e23d4159 upstream. Switching iov_iter fault-in to multipages variants has exposed an old bug in underlying fault_in_multipages_...(); they break if the range passed to them wraps around. Normally access_ok() done by callers will prevent such (and it's a guaranteed EFAULT - ERR_PTR() values fall into such a range and they should not point to any valid objects). However, on architectures where userland and kernel live in different MMU contexts (e.g. s390) access_ok() is a no-op and on those a range with a wraparound can reach fault_in_multipages_...(). Since any wraparound means EFAULT there, the fix is trivial - turn those while (uaddr <= end) ... into if (unlikely(uaddr > end)) return -EFAULT; do ... while (uaddr <= end); Reported-by:
Jan Stancek <jstancek@redhat.com> Tested-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
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Ashish Samant authored
commit d21c353d upstream. If we punch a hole on a reflink such that following conditions are met: 1. start offset is on a cluster boundary 2. end offset is not on a cluster boundary 3. (end offset is somewhere in another extent) or (hole range > MAX_CONTIG_BYTES(1MB)), we dont COW the first cluster starting at the start offset. But in this case, we were wrongly passing this cluster to ocfs2_zero_range_for_truncate() to zero out. This will modify the cluster in place and zero it in the source too. Fix this by skipping this cluster in such a scenario. To reproduce: 1. Create a random file of say 10 MB xfs_io -c 'pwrite -b 4k 0 10M' -f 10MBfile 2. Reflink it reflink -f 10MBfile reflnktest 3. Punch a hole at starting at cluster boundary with range greater that 1MB. You can also use a range that will put the end offset in another extent. fallocate -p -o 0 -l 1048615 reflnktest 4. sync 5. Check the first cluster in the source file. (It will be zeroed out). dd if=10MBfile iflag=direct bs=<cluster size> count=1 | hexdump -C Link: http://lkml.kernel.org/r/1470957147-14185-1-git-send-email-ashish.samant@oracle.comSigned-off-by:
Ashish Samant <ashish.samant@oracle.com> Reported-by:
Saar Maoz <saar.maoz@oracle.com> Reviewed-by:
Srinivas Eeda <srinivas.eeda@oracle.com> Cc: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Joseph Qi <joseph.qi@huawei.com> Cc: Eric Ren <zren@suse.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Jan Kara authored
commit 96d41019 upstream. fanotify_get_response() calls fsnotify_remove_event() when it finds that group is being released from fanotify_release() (bypass_perm is set). However the event it removes need not be only in the group's notification queue but it can have already moved to access_list (userspace read the event before closing the fanotify instance fd) which is protected by a different lock. Thus when fsnotify_remove_event() races with fanotify_release() operating on access_list, the list can get corrupted. Fix the problem by moving all the logic removing permission events from the lists to one place - fanotify_release(). Fixes: 5838d444 ("fanotify: fix double free of pending permission events") Link: http://lkml.kernel.org/r/1473797711-14111-3-git-send-email-jack@suse.czSigned-off-by:
Jan Kara <jack@suse.cz> Reported-by:
Miklos Szeredi <mszeredi@redhat.com> Tested-by:
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Jan Kara authored
commit 12703dbf upstream. Implement a function that can be called when a group is being shutdown to stop queueing new events to the group. Fanotify will use this. Fixes: 5838d444 ("fanotify: fix double free of pending permission events") Link: http://lkml.kernel.org/r/1473797711-14111-2-git-send-email-jack@suse.czSigned-off-by:
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Joseph Qi authored
commit e6f0c6e6 upstream. Commit ac7cf246 ("ocfs2/dlm: fix race between convert and recovery") checks if lockres master has changed to identify whether new master has finished recovery or not. This will introduce a race that right after old master does umount ( means master will change), a new convert request comes. In this case, it will reset lockres state to DLM_RECOVERING and then retry convert, and then fail with lockres->l_action being set to OCFS2_AST_INVALID, which will cause inconsistent lock level between ocfs2 and dlm, and then finally BUG. Since dlm recovery will clear lock->convert_pending in dlm_move_lockres_to_recovery_list, we can use it to correctly identify the race case between convert and recovery. So fix it. Fixes: ac7cf246 ("ocfs2/dlm: fix race between convert and recovery") Link: http://lkml.kernel.org/r/57CE1569.8010704@huawei.comSigned-off-by:
Joseph Qi <joseph.qi@huawei.com> Signed-off-by:
Jun Piao <piaojun@huawei.com> Cc: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Signed-off-by:
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Fabio Estevam authored
commit 4de349e7 upstream. On a imx6ul-pico board the following error is seen during system suspend: dpm_run_callback(): platform_pm_resume+0x0/0x54 returns -110 PM: Device 2090000.flexcan failed to resume: error -110 The reason for this suspend error is because when the CAN interface is not active the clocks are disabled and then flexcan_chip_enable() will always fail due to a timeout error. In order to fix this issue, only call flexcan_chip_enable/disable() when the CAN interface is active. Based on a patch from Dong Aisheng in the NXP kernel. Signed-off-by:
Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by:
Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by:
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Ilan Tayari authored
commit b5884793 upstream. commit 1a6509d9 ("[IPSEC]: Add support for combined mode algorithms") introduced aead. The function attach_aead kmemdup()s the algorithm name during xfrm_state_construct(). However this memory is never freed. Implementation has since been slightly modified in commit ee5c2317 ("xfrm: Clone states properly on migration") without resolving this leak. This patch adds a kfree() call for the aead algorithm name. Fixes: 1a6509d9 ("[IPSEC]: Add support for combined mode algorithms") Signed-off-by:
Ilan Tayari <ilant@mellanox.com> Acked-by:
Rami Rosen <roszenrami@gmail.com> Signed-off-by:
Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by:
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Guenter Roeck authored
commit 8e4b7205 upstream. Since commit acb2505d ("openrisc: fix copy_from_user()"), copy_from_user() returns the number of bytes requested, not the number of bytes not copied. Cc: Al Viro <viro@zeniv.linux.org.uk> Fixes: acb2505d ("openrisc: fix copy_from_user()") Signed-off-by:
Guenter Roeck <linux@roeck-us.net> Signed-off-by:
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Guenter Roeck authored
commit 65c0044c upstream. avr32 builds fail with: arch/avr32/kernel/built-in.o: In function `arch_ptrace': (.text+0x650): undefined reference to `___copy_from_user' arch/avr32/kernel/built-in.o:(___ksymtab+___copy_from_user+0x0): undefined reference to `___copy_from_user' kernel/built-in.o: In function `proc_doulongvec_ms_jiffies_minmax': (.text+0x5dd8): undefined reference to `___copy_from_user' kernel/built-in.o: In function `proc_dointvec_minmax_sysadmin': sysctl.c:(.text+0x6174): undefined reference to `___copy_from_user' kernel/built-in.o: In function `ptrace_has_cap': ptrace.c:(.text+0x69c0): undefined reference to `___copy_from_user' kernel/built-in.o:ptrace.c:(.text+0x6b90): more undefined references to `___copy_from_user' follow Fixes: 8630c322 ("avr32: fix copy_from_user()") Cc: Al Viro <viro@zeniv.linux.org.uk> Acked-by:
Havard Skinnemoen <hskinnemoen@gmail.com> Acked-by:
Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> Signed-off-by:
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phil.turnbull@oracle.com authored
commit 8ab86c00 upstream. skb is not freed if newsk is NULL. Rework the error path so free_skb is unconditionally called on function exit. Fixes: c3ea9fa2 ("[IrDA] af_irda: IRDA_ASSERT cleanups") Signed-off-by:
Phil Turnbull <phil.turnbull@oracle.com> Signed-off-by:
David S. Miller <davem@davemloft.net> [bwh: Backported to 3.16: adjust context] Signed-off-by:
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Jack Morgenstein authored
commit 8ec07bf8 upstream. When sending QP1 MAD packets which use a GRH, the source GID (which consists of the 64-bit subnet prefix, and the 64 bit port GUID) must be included in the packet GRH. For SR-IOV, a GID cache is used, since the source GID needs to be the slave's source GID, and not the Hypervisor's GID. This cache also included a subnet_prefix. Unfortunately, the subnet_prefix field in the cache was never initialized (to the default subnet prefix 0xfe80::0). As a result, this field remained all zeroes. Therefore, when SR-IOV was active, all QP1 packets which included a GRH had a source GID subnet prefix of all-zeroes. However, the subnet-prefix should initially be 0xfe80::0 (the default subnet prefix). In addition, if OpenSM modifies a port's subnet prefix, the new subnet prefix must be used in the GRH when sending QP1 packets. To fix this we now initialize the subnet prefix in the SR-IOV GID cache to the default subnet prefix. We update the cached value if/when OpenSM modifies the port's subnet prefix. We take this cached value when sending QP1 packets when SR-IOV is active. Note that the value is stored as an atomic64. This eliminates any need for locking when the subnet prefix is being updated. Note also that we depend on the FW generating the "port management change" event for tracking subnet-prefix changes performed by OpenSM. If running early FW (before 2.9.4630), subnet prefix changes will not be tracked (but the default subnet prefix still will be stored in the cache; therefore users who do not modify the subnet prefix will not have a problem). IF there is a need for such tracking also for early FW, we will add that capability in a subsequent patch. Fixes: 1ffeb2eb ("IB/mlx4: SR-IOV IB context objects and proxy/tunnel SQP support") Signed-off-by:
Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by:
Leon Romanovsky <leon@kernel.org> Signed-off-by:
Doug Ledford <dledford@redhat.com> Signed-off-by:
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Jack Morgenstein authored
commit baa0be70 upstream. The indentation in the QP1 GRH flow in procedure build_mlx_header is really confusing. Fix it, in preparation for a commit which touches this code. Fixes: 1ffeb2eb ("IB/mlx4: SR-IOV IB context objects and proxy/tunnel SQP support") Signed-off-by:
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Alex Vesker authored
commit e5ac40cd upstream. Because of an incorrect bit-masking done on the join state bits, when handling a join request we failed to detect a difference between the group join state and the request join state when joining as send only full member (0x8). This caused the MC join request not to be sent. This issue is relevant only when SRIOV is enabled and SM supports send only full member. This fix separates scope bits and join states bits a nibble each. Fixes: b9c5d6a6 ('IB/mlx4: Add multicast group (MCG) paravirtualization for SR-IOV') Signed-off-by:
Alex Vesker <valex@mellanox.com> Signed-off-by:
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Alex Vesker authored
commit 344bacca upstream. This fix solves a race between light flush and on the fly joins. Light flush doesn't set the device to down and unset IPOIB_OPER_UP flag, this means that if while flushing we have a MC join in progress and the QP was attached to BC MGID we can have a mismatches when re-attaching a QP to the BC MGID. The light flush would set the broadcast group to NULL causing an on the fly join to rejoin and reattach to the BC MCG as well as adding the BC MGID to the multicast list. The flush process would later on remove the BC MGID and detach it from the QP. On the next flush the BC MGID is present in the multicast list but not found when trying to detach it because of the previous double attach and single detach. [18332.714265] ------------[ cut here ]------------ [18332.717775] WARNING: CPU: 6 PID: 3767 at drivers/infiniband/core/verbs.c:280 ib_dealloc_pd+0xff/0x120 [ib_core] ... [18332.775198] Hardware name: Red Hat KVM, BIOS Bochs 01/01/2011 [18332.779411] 0000000000000000 ffff8800b50dfbb0 ffffffff813fed47 0000000000000000 [18332.784960] 0000000000000000 ffff8800b50dfbf0 ffffffff8109add1 0000011832f58300 [18332.790547] ffff880226a596c0 ffff880032482000 ffff880032482830 ffff880226a59280 [18332.796199] Call Trace: [18332.798015] [<ffffffff813fed47>] dump_stack+0x63/0x8c [18332.801831] [<ffffffff8109add1>] __warn+0xd1/0xf0 [18332.805403] [<ffffffff8109aebd>] warn_slowpath_null+0x1d/0x20 [18332.809706] [<ffffffffa025d90f>] ib_dealloc_pd+0xff/0x120 [ib_core] [18332.814384] [<ffffffffa04f3d7c>] ipoib_transport_dev_cleanup+0xfc/0x1d0 [ib_ipoib] [18332.820031] [<ffffffffa04ed648>] ipoib_ib_dev_cleanup+0x98/0x110 [ib_ipoib] [18332.825220] [<ffffffffa04e62c8>] ipoib_dev_cleanup+0x2d8/0x550 [ib_ipoib] [18332.830290] [<ffffffffa04e656f>] ipoib_uninit+0x2f/0x40 [ib_ipoib] [18332.834911] [<ffffffff81772a8a>] rollback_registered_many+0x1aa/0x2c0 [18332.839741] [<ffffffff81772bd1>] rollback_registered+0x31/0x40 [18332.844091] [<ffffffff81773b18>] unregister_netdevice_queue+0x48/0x80 [18332.848880] [<ffffffffa04f489b>] ipoib_vlan_delete+0x1fb/0x290 [ib_ipoib] [18332.853848] [<ffffffffa04df1cd>] delete_child+0x7d/0xf0 [ib_ipoib] [18332.858474] [<ffffffff81520c08>] dev_attr_store+0x18/0x30 [18332.862510] [<ffffffff8127fe4a>] sysfs_kf_write+0x3a/0x50 [18332.866349] [<ffffffff8127f4e0>] kernfs_fop_write+0x120/0x170 [18332.870471] [<ffffffff81207198>] __vfs_write+0x28/0xe0 [18332.874152] [<ffffffff810e09bf>] ? percpu_down_read+0x1f/0x50 [18332.878274] [<ffffffff81208062>] vfs_write+0xa2/0x1a0 [18332.881896] [<ffffffff812093a6>] SyS_write+0x46/0xa0 [18332.885632] [<ffffffff810039b7>] do_syscall_64+0x57/0xb0 [18332.889709] [<ffffffff81883321>] entry_SYSCALL64_slow_path+0x25/0x25 [18332.894727] ---[ end trace 09ebbe31f831ef17 ]--- Fixes: ee1e2c82 ("IPoIB: Refresh paths instead of flushing them on SM change events") Signed-off-by:
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Alan Stern authored
commit 08c5cd37 upstream. Some full-speed mceusb infrared transceivers contain invalid endpoint descriptors for their interrupt endpoints, with bInterval set to 0. In the past they have worked out okay with the mceusb driver, because the driver sets the bInterval field in the descriptor to 1, overwriting whatever value may have been there before. However, this approach was never sanctioned by the USB core, and in fact it does not work with xHCI controllers, because they use the bInterval value that was present when the configuration was installed. Currently usbcore uses 32 ms as the default interval if the value in the endpoint descriptor is invalid. It turns out that these IR transceivers don't work properly unless the interval is set to 10 ms or below. To work around this mceusb problem, this patch changes the endpoint-descriptor parsing routine, making the default interval value be 10 ms rather than 32 ms. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Tested-by:
Wade Berrier <wberrier@gmail.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Matt Fleming authored
commit 080fe0b7 upstream. While the Intel PMU monitors the LLC when perf enables the HW_CACHE_REFERENCES and HW_CACHE_MISSES events, these events monitor L1 instruction cache fetches (0x0080) and instruction cache misses (0x0081) on the AMD PMU. This is extremely confusing when monitoring the same workload across Intel and AMD machines, since parameters like, $ perf stat -e cache-references,cache-misses measure completely different things. Instead, make the AMD PMU measure instruction/data cache and TLB fill requests to the L2 and instruction/data cache and TLB misses in the L2 when HW_CACHE_REFERENCES and HW_CACHE_MISSES are enabled, respectively. That way the events measure unified caches on both platforms. Signed-off-by:
Matt Fleming <matt@codeblueprint.co.uk> Acked-by:
Peter Zijlstra <peterz@infradead.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1472044328-21302-1-git-send-email-matt@codeblueprint.co.ukSigned-off-by:
Ingo Molnar <mingo@kernel.org> [bwh: Backported to 3.16: - Drop KVM PMU changes - Adjust filename] Signed-off-by:
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Al Viro authored
commit 8630c322 upstream. really ugly, but apparently avr32 compilers turns access_ok() into something so bad that they want it in assembler. Left that way, zeroing added in inline wrapper. Signed-off-by:
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Al Viro authored
commit e98b9e37 upstream. Signed-off-by:
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Al Viro authored
commit d0cf3851 upstream. Signed-off-by:
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Al Viro authored
commit c90a3bc5 upstream. Signed-off-by:
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Al Viro authored
commit 8f035983 upstream. Signed-off-by:
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Al Viro authored
commit 917400ce upstream. Acked-by:
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Al Viro authored
commit 6e050503 upstream. Signed-off-by:
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Al Viro authored
commit c6852389 upstream. It could be done in exception-handling bits in __get_user_b() et.al., but the surgery involved would take more knowledge of sh64 details than I have or _want_ to have. Signed-off-by:
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Al Viro authored
commit b615e3c7 upstream. Signed-off-by:
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Al Viro authored
commit c2f18fa4 upstream. * should zero on any failure * __get_user() should use __copy_from_user(), not copy_from_user() Signed-off-by:
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Al Viro authored
commit fd2d2b19 upstream. Signed-off-by:
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Al Viro authored
commit 22426465 upstream. should clear on access_ok() failures. Also remove the useless range truncation logics. Signed-off-by:
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Al Viro authored
commit aace880f upstream. Signed-off-by:
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Al Viro authored
commit acb2505d upstream. ... that should zero on faults. Also remove the <censored> helpful logics wrt range truncation copied from ppc32. Where it had ever been needed only in case of copy_from_user() *and* had not been merged into the mainline until a month after the need had disappeared. A decade before openrisc went into mainline, I might add... Signed-off-by:
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Al Viro authored
commit ae7cc577 upstream. Signed-off-by:
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Al Viro authored
commit 43403eab upstream. Signed-off-by:
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Al Viro authored
commit e69d7005 upstream. Signed-off-by:
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Vineet Gupta authored
commit 05d9d0b9 upstream. Al reported potential issue with ARC get_user() as it wasn't clearing out destination pointer in case of fault due to bad address etc. Verified using following | { | u32 bogus1 = 0xdeadbeef; | u64 bogus2 = 0xdead; | int rc1, rc2; | | pr_info("Orig values %x %llx\n", bogus1, bogus2); | rc1 = get_user(bogus1, (u32 __user *)0x40000000); | rc2 = get_user(bogus2, (u64 __user *)0x50000000); | pr_info("access %d %d, new values %x %llx\n", | rc1, rc2, bogus1, bogus2); | } | [ARCLinux]# insmod /mnt/kernel-module/qtn.ko | Orig values deadbeef dead | access -14 -14, new values 0 0 Reported-by:
Vineet Gupta <vgupta@synopsys.com> Signed-off-by:
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Al Viro authored
commit 8ae95ed4 upstream. Acked-by:
James Hogan <james.hogan@imgtec.com> Signed-off-by:
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Al Viro authored
commit a5e541f7 upstream. Signed-off-by:
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Al Viro authored
commit f35c1e06 upstream. It's -EFAULT, not -1 (and contrary to the comment in there, __strnlen_user() can return 0 - on faults). Acked-by:
Richard Kuo <rkuo@codeaurora.org> Signed-off-by:
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