]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
sh_eth: fix invalid context bug while calling auto-negotiation by ethtool
authorVladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Wed, 4 Jul 2018 08:12:39 +0000 (11:12 +0300)
committerDavid S. Miller <davem@davemloft.net>
Sat, 7 Jul 2018 01:44:09 +0000 (10:44 +0900)
commit53a710b5044d8475faa6813000b6dd659400ef7b
tree8c490e5fdafe6eed18527cd63e784771b7b334c7
parent70ba5b6db96ff7324b8cfc87e0d0383cf59c9677
sh_eth: fix invalid context bug while calling auto-negotiation by ethtool

Since commit 35b5f6b1a82b ("PHYLIB: Locking fixes for PHY I/O
potentially sleeping") phy_start_aneg() function utilizes a mutex
to serialize changes to phy state, however the helper function is
called in atomic context.

The bug can be reproduced by running "ethtool -r" command, the bug
is reported if CONFIG_DEBUG_ATOMIC_SLEEP build option is enabled.

Fixes: dc19e4e5e02f ("sh: sh_eth: Add support ethtool")
Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Reviewed-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/renesas/sh_eth.c