Re: [PATCH net-next] net loopback: Set loopback_dev to NULL when freed

(off-list ancestor, not in this archive)
Re: [PATCH 1/1] net: race condition when removing virtual net_device · Eric W. Biederman <hidden> · 2013-09-12
Re: [PATCH 1/1] net: race condition when removing virtual net_device · Francesco Ruggeri <hidden> · 2013-09-12
Re: [PATCH 1/1] net: race condition when removing virtual net_device · Francesco Ruggeri <hidden> · 2013-09-12
Re: [PATCH 1/1] net: race condition when removing virtual net_device · Eric W. Biederman <hidden> · 2013-09-13
Re: [PATCH 1/1] net: race condition when removing virtual net_device · Francesco Ruggeri <hidden> · 2013-09-13
Re: [PATCH 1/1] net: race condition when removing virtual net_device · Eric W. Biederman <hidden> · 2013-09-14
Re: [PATCH 1/1] net: race condition when removing virtual net_device · Francesco Ruggeri <hidden> · 2013-09-16
Re: [PATCH 1/1] net: race condition when removing virtual net_device · Eric W. Biederman <hidden> · 2013-09-16
Re: [PATCH 1/1] net: race condition when removing virtual net_device · Francesco Ruggeri <hidden> · 2013-09-16
[PATCH net-next] net loopback: Set loopback_dev to NULL when freed · Eric W. Biederman <hidden> · 2013-09-16
Re: [PATCH net-next] net loopback: Set loopback_dev to NULL when freed · Eric Dumazet <hidden> · 2013-09-17
Re: [PATCH net-next] net loopback: Set loopback_dev to NULL when freed · David Miller <davem@davemloft.net> · 2013-09-17
Re: [PATCH net-next] net loopback: Set loopback_dev to NULL when freed · Eric Dumazet <hidden> · 2013-09-17
Re: [PATCH net-next] net loopback: Set loopback_dev to NULL when freed · Eric W. Biederman <hidden> · 2013-09-17
Re: [PATCH net-next] net loopback: Set loopback_dev to NULL when freed · David Miller <davem@davemloft.net> · 2013-09-17
Re: [PATCH 1/1] net: race condition when removing virtual net_device · Eric W. Biederman <hidden> · 2013-09-17
Re: [PATCH 1/1] net: race condition when removing virtual net_device · Francesco Ruggeri <hidden> · 2013-09-17
[CFT][PATCH] net: Delay default_device_exit_batch until no devices are unregistering · Eric W. Biederman <hidden> · 2013-09-17
Re: [CFT][PATCH] net: Delay default_device_exit_batch until no devices are unregistering · Francesco Ruggeri <hidden> · 2013-09-17
Re: [CFT][PATCH] net: Delay default_device_exit_batch until no devices are unregistering · Eric W. Biederman <hidden> · 2013-09-17
Re: [CFT][PATCH] net: Delay default_device_exit_batch until no devices are unregistering · Francesco Ruggeri <hidden> · 2013-09-17
Re: [CFT][PATCH] net: Delay default_device_exit_batch until no devices are unregistering · David Miller <davem@davemloft.net> · 2013-09-17
Re: [CFT][PATCH] net: Delay default_device_exit_batch until no devices are unregistering · Eric W. Biederman <hidden> · 2013-09-17
Re: [CFT][PATCH] net: Delay default_device_exit_batch until no devices are unregistering · David Miller <davem@davemloft.net> · 2013-09-18
Re: [CFT][PATCH] net: Delay default_device_exit_batch until no devices are unregistering · Francesco Ruggeri <hidden> · 2013-09-18
Re: [CFT][PATCH] net: Delay default_device_exit_batch until no devices are unregistering · David Miller <davem@davemloft.net> · 2013-09-18
Re: [CFT][PATCH] net: Delay default_device_exit_batch until no devices are unregistering · Eric W. Biederman <hidden> · 2013-09-18
Re: [CFT][PATCH] net: Delay default_device_exit_batch until no devices are unregistering · Francesco Ruggeri <hidden> · 2013-09-20
[PATCH] net: Delay default_device_exit_batch until no devices are unregistering v2 · Eric W. Biederman <hidden> · 2013-09-24
Re: [PATCH] net: Delay default_device_exit_batch until no devices are unregistering v2 · Francesco Ruggeri <hidden> · 2013-09-24
Re: [PATCH] net: Delay default_device_exit_batch until no devices are unregistering v2 · David Miller <davem@davemloft.net> · 2013-09-28
Re: [PATCH 1/1] net: race condition when removing virtual net_device · David Miller <davem@davemloft.net> · 2013-09-14
Re: [PATCH 1/1] net: race condition when removing virtual net_device · Eric W. Biederman <hidden> · 2013-09-14

From: Eric Dumazet <hidden>
Date: 2013-09-17 00:50:53

On Mon, 2013-09-16 at 16:52 -0700, Eric W. Biederman wrote:

It has recently turned up that we have a number of long standing bugs
in the network stack cleanup code with use of the loopback device
after it has been freed that have not turned up because in most cases
the storage allocated to the loopback device is not reused, when those
accesses happen.

Set looback_dev to NULL to trigger oopses instead of silent data corrupt
when we hit this class of bug.

Signed-off-by: "Eric W. Biederman" <redacted>
---

Acked-by: Eric Dumazet <edumazet@google.com>

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