Skip to content

R
raspberrypi-kernel

openeuler / raspberrypi-kernel

通知 13
Star 1
Fork 0
R
raspberrypi-kernel
切换分支/标签
  1. 16 9月, 2011 7 次提交
    • K
      tcm_fc: Invalidation of DDP context for FCoE target in error conditions · 079587b4
      由 Kiran Patil 提交于 
      Problem: HW DDP context wasn;t invalidated in case of ABORTS, etc...
This leads to the problem where memory pages which are used for DDP
as user descriptor could get reused for some other purpose (such as to
satisfy new memory allocation request either by kernel or user mode threads)
and since HW DDP context was not invalidated, HW continue to write to
those pages, hence causing memory corruption.

Fix: Either on incoming ABORTS or due to exchange time out, allowed the
target to cleanup HW DDP context if it was setup for respective ft_cmd.
Added new function to perform this cleanup, furthur it can be enhanced
for other cleanup activity.

Additinal Notes: To avoid calling ddp_done from multiple places, composed
the functionality in helper function "ft_invl_hw_context" and it is being
called from multiple places. Cleaned up code in function "ft_recv_write_data"
w.r.t DDP.
Signed-off-by: NKiran Patil <kiran.patil@intel.com>
Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
      079587b4
    • R
      target: Fix race between multiple invocations of target_qf_do_work() · bcac364a
      由 Roland Dreier 提交于 
      When work is scheduled with schedule_work(), the work can end up
running on multiple CPUs at the same time -- this happens if
the work is already running on one CPU and schedule_work() is called
on another CPU.  This leads to list corruption with target_qf_do_work(),
which is roughly doing:

	spin_lock(...);
	list_for_each_entry_safe(...) {
		list_del(...);
		spin_unlock(...);

		// do stuff

		spin_lock(...);
	}

With multiple CPUs running this code, one CPU can end up deleting the
list entry that the other CPU is about to work on.

Fix this by splicing the list entries onto a local list and then
operating on that in the work function.  This way, each invocation of
target_qf_do_work() operates on its own local list and so multiple
invocations don't corrupt each other's list.  This also avoids dropping
and reacquiring the lock for each list entry.
Signed-off-by: NRoland Dreier <roland@purestorage.com>
Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
      bcac364a
    • L
      asm alternatives: remove incorrect alignment notes · a7f934d4
      由 Linus Torvalds 提交于 
      On x86-64, they were just wasteful: with the explicitly added (now
unnecessary) padding, the size of the alternatives structure was 16
bytes, and an alignment of 8 bytes didn't hurt much.

However, it was still silly, since the natural size and alignment for
the structure is actually just 12 bytes, 4-byte aligned since commit
59e97e4d ("x86: Make alternative instruction pointers relative").
So removing the padding, and removing the extra alignment is just a good
idea.

On x86-32, the alignment of 4 bytes was correct, but was incorrectly
hardcoded as 8 bytes in <asm/alternative-asm.h>.  That header file had
used to be an x86-64 only header file, but various unification efforts
have made it be used for x86-32 too (ie the unification of rwlock and
rwsem).

That in turn caused x86-32 boot failures, because the extra alignment
would result in random zero-filled words in the altinstructions section,
causing oopses early at boot when doing alternative instruction
replacement.

So just remove all the alignment noise entirely.  It's wrong, and it's
unnecessary.  The section itself is already properly aligned by the
linker scripts, and all additions to the section had better be of the
proper 12-byte format, keeping it aligned.  So if the align directive
were to ever make a difference, that would be an indication of a serious
bug to begin with.
Reported-by: NWerner Landgraf <w.landgraf@ru.r>
Acked-by: NAndrew Lutomirski <luto@mit.edu>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      a7f934d4
    • L
      Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/linux-nfs · 17d8428e
      由 Linus Torvalds 提交于 
      * 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  nfs: Do not allow multiple mounts on same mountpoint when using -o noac
  NFS: Fix a typo in nfs_flush_multi
  NFSv4: renewd needs to be able to handle the NFS4ERR_CB_PATH_DOWN error
  NFSv4: The NFSv4.0 client must send RENEW calls if it holds a delegation
  NFSv4: nfs4_proc_renew should be declared static
  NFSv4: nfs4_proc_async_renew should use a GFP_NOFS allocation
      17d8428e
    • L
      Merge branch 'hwmon-for-linus' of git://github.com/groeck/linux · fa758702
      由 Linus Torvalds 提交于 
      * 'hwmon-for-linus' of git://github.com/groeck/linux:
  hwmon: (coretemp) Initialize tmin
  hwmon: (pmbus) Fix low limit temperature alarms
      fa758702
    • C
      hfsplus: fix filesystem size checks · f1fcd9f0
      由 Christoph Hellwig 提交于 
      generic_check_addressable can't deal with hfsplus's larger than page
size allocation blocks, so simply opencode the checks that we actually
need in hfsplus_fill_super.
Signed-off-by: NChristoph Hellwig <hch@tuxera.com>
Reported-by: NPavel Ivanov <paivanof@gmail.com>
Tested-by: NPavel Ivanov <paivanof@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      f1fcd9f0
    • S
      hfsplus: Fix kfree of wrong pointers in hfsplus_fill_super() error path · f588c960
      由 Seth Forshee 提交于 
      Commit 6596528e ("hfsplus: ensure bio requests are not smaller than
the hardware sectors") changed the pointers used for volume header
allocations but failed to free the correct pointers in the error path
path of hfsplus_fill_super() and hfsplus_read_wrapper.

The second hunk came from a separate patch by Pavel Ivanov.
Reported-by: NPavel Ivanov <paivanof@gmail.com>
Signed-off-by: NSeth Forshee <seth.forshee@canonical.com>
Signed-off-by: NChristoph Hellwig <hch@tuxera.com>
Cc: <stable@kernel.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      f588c960
  3. 15 9月, 2011 29 次提交
  5. 14 9月, 2011 4 次提交