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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: stable@vger.kernel.org, Jann Horn <jannh@google.com>,
	"Peter Zijlstra (Intel)" <peterz@infradead.org>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Petr Mladek <pmladek@suse.com>,
	Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Will Deacon <will@kernel.org>, Ingo Molnar <mingo@kernel.org>
Subject: Re: [PATCH 4.14 25/25] sched/fair: Use RCU accessors consistently for ->numa_group
Date: Fri, 2 Aug 2019 17:37:51 +0200	[thread overview]
Message-ID: <20190802153751.GA17602@kroah.com> (raw)
In-Reply-To: <20190802092107.912885585@linuxfoundation.org>

On Fri, Aug 02, 2019 at 11:39:57AM +0200, Greg Kroah-Hartman wrote:
> From: Jann Horn <jannh@google.com>
> 
> commit cb361d8cdef69990f6b4504dc1fd9a594d983c97 upstream.
> 
> The old code used RCU annotations and accessors inconsistently for
> ->numa_group, which can lead to use-after-frees and NULL dereferences.
> 
> Let all accesses to ->numa_group use proper RCU helpers to prevent such
> issues.
> 
> Signed-off-by: Jann Horn <jannh@google.com>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
> Cc: Linus Torvalds <torvalds@linux-foundation.org>
> Cc: Peter Zijlstra <peterz@infradead.org>
> Cc: Petr Mladek <pmladek@suse.com>
> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Will Deacon <will@kernel.org>
> Fixes: 8c8a743c5087 ("sched/numa: Use {cpu, pid} to create task groups for shared faults")
> Link: https://lkml.kernel.org/r/20190716152047.14424-3-jannh@google.com
> Signed-off-by: Ingo Molnar <mingo@kernel.org>
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Oops, nope, this didn't apply, sorry about that, it needs to be properly
backported to 4.14.y and older before it can go here.

thanks,

greg k-h

  reply	other threads:[~2019-08-02 15:37 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-02  9:39 [PATCH 4.14 00/25] 4.14.136-stable review Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 01/25] VSOCK: use TCP state constants for sk_state Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 02/25] vsock: correct removal of socket from the list Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 03/25] NFS: Fix dentry revalidation on NFSv4 lookup Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 04/25] NFS: Refactor nfs_lookup_revalidate() Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 05/25] NFSv4: Fix lookup revalidate of regular files Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 06/25] arm64: dts: marvell: Fix A37xx UART0 register size Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 07/25] i2c: qup: fixed releasing dma without flush operation completion Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 08/25] arm64: compat: Provide definition for COMPAT_SIGMINSTKSZ Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 09/25] binder: fix possible UAF when freeing buffer Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 10/25] ISDN: hfcsusb: checking idx of ep configuration Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 11/25] media: au0828: fix null dereference in error path Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 12/25] ath10k: Change the warning message string Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 13/25] media: cpia2_usb: first wake up, then free in disconnect Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 14/25] media: pvrusb2: use a different format for warnings Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 15/25] NFS: Cleanup if nfs_match_client is interrupted Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 16/25] media: radio-raremono: change devm_k*alloc to k*alloc Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 17/25] iommu/vt-d: Dont queue_iova() if there is no flush queue Greg Kroah-Hartman
2019-08-02  9:39   ` Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 18/25] iommu/iova: Fix compilation error with !CONFIG_IOMMU_IOVA Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 19/25] hv_sock: Add support for delayed close Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 20/25] Bluetooth: hci_uart: check for missing tty operations Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 21/25] sched/fair: Dont free p->numa_faults with concurrent readers Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 22/25] drivers/pps/pps.c: clear offset flags in PPS_SETPARAMS ioctl Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 23/25] Fix allyesconfig output Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 24/25] ceph: hold i_ceph_lock when removing caps for freeing inode Greg Kroah-Hartman
2019-08-02  9:39 ` [PATCH 4.14 25/25] sched/fair: Use RCU accessors consistently for ->numa_group Greg Kroah-Hartman
2019-08-02 15:37   ` Greg Kroah-Hartman [this message]
2019-08-02 13:59 ` [PATCH 4.14 00/25] 4.14.136-stable review Thierry Reding
2019-08-02 15:50 ` Greg Kroah-Hartman
2019-08-03  5:43   ` Naresh Kamboju
2019-08-02 23:20 ` shuah
2019-08-03 15:59 ` Guenter Roeck

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