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| author | Jacob Keller <jacob.e.keller@intel.com> | 2015-06-03 16:30:59 -0700 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2015-06-17 14:20:29 -0700 |
| commit | 608bb146ff48588c43bf6332912ea8796768fb39 (patch) | |
| tree | fc76f9ecc506ae039d8fa7aeb983e0c71ad3485a /drivers/net/ethernet | |
| parent | 745136a8b72d638f3ee53a2b6a63f11c64a59937 (diff) | |
| download | talos-op-linux-608bb146ff48588c43bf6332912ea8796768fb39.tar.gz talos-op-linux-608bb146ff48588c43bf6332912ea8796768fb39.zip | |
fm10k: use correct ethernet driver Tx timestamp function
skb_complete_tx_timestamp is intended for use by PHY drivers which
implement a different method of returning timestamps. This method is
intended to be used after a PHY driver accepts a cloned packet via its
phy_driver.txtstamp function. It is not correct to use in the standard
ethernet driver such as fm10k. This patch fixes the following possible
kernel panic.
[ 2744.552896] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W OE 3.19.3-200.fc21.x86_64 #1
[ 2744.552899] Hardware name: Intel Corporation S2600CO/S2600CO, BIOS SE5C600.86B.02.03.8x23.060520140825 06/05/2014
[ 2744.552901] 0000000000000000 2f4c8b10ea3f9848 ffff88081ee03a38 ffffffff8176e215
[ 2744.552906] 0000000000000000 0000000000000000 ffff88081ee03a78 ffffffff8109bc1a
[ 2744.552910] ffff88081ee03c50 ffff88080e55fc00 ffff88080e55fc00 ffffffff81647c50
[ 2744.552914] Call Trace:
[ 2744.552917] <IRQ> [<ffffffff8176e215>] dump_stack+0x45/0x57
[ 2744.552931] [<ffffffff8109bc1a>] warn_slowpath_common+0x8a/0xc0
[ 2744.552936] [<ffffffff81647c50>] ? skb_queue_purge+0x20/0x40
[ 2744.552941] [<ffffffff8109bd4a>] warn_slowpath_null+0x1a/0x20
[ 2744.552946] [<ffffffff81646911>] skb_release_head_state+0xe1/0xf0
[ 2744.552950] [<ffffffff81647b26>] skb_release_all+0x16/0x30
[ 2744.552954] [<ffffffff81647ba6>] kfree_skb+0x36/0x90
[ 2744.552958] [<ffffffff81647c50>] skb_queue_purge+0x20/0x40
[ 2744.552964] [<ffffffff81751f8d>] packet_sock_destruct+0x1d/0x90
[ 2744.552968] [<ffffffff81642053>] __sk_free+0x23/0x140
[ 2744.552973] [<ffffffff81642189>] sk_free+0x19/0x20
[ 2744.552977] [<ffffffff81647d60>] skb_complete_tx_timestamp+0x50/0x60
[ 2744.552988] [<ffffffffa02eee40>] fm10k_ts_tx_hwtstamp+0xd0/0x100 [fm10k]
[ 2744.552994] [<ffffffffa02e054e>] fm10k_1588_msg_pf+0x12e/0x140 [fm10k]
[ 2744.553002] [<ffffffffa02edf1d>] fm10k_tlv_msg_parse+0x8d/0xc0 [fm10k]
[ 2744.553010] [<ffffffffa02eb2d0>] fm10k_mbx_dequeue_rx+0x60/0xb0 [fm10k]
[ 2744.553016] [<ffffffffa02ebf98>] fm10k_sm_mbx_process+0x178/0x3c0 [fm10k]
[ 2744.553022] [<ffffffffa02e09ca>] fm10k_msix_mbx_pf+0xfa/0x360 [fm10k]
[ 2744.553030] [<ffffffff811030a7>] ? get_next_timer_interrupt+0x1f7/0x270
[ 2744.553036] [<ffffffff810f2a47>] handle_irq_event_percpu+0x77/0x1a0
[ 2744.553041] [<ffffffff810f2bab>] handle_irq_event+0x3b/0x60
[ 2744.553045] [<ffffffff810f5d6e>] handle_edge_irq+0x6e/0x120
[ 2744.553054] [<ffffffff81017414>] handle_irq+0x74/0x140
[ 2744.553061] [<ffffffff810bb54a>] ? atomic_notifier_call_chain+0x1a/0x20
[ 2744.553066] [<ffffffff8177777f>] do_IRQ+0x4f/0xf0
[ 2744.553072] [<ffffffff8177556d>] common_interrupt+0x6d/0x6d
[ 2744.553074] <EOI> [<ffffffff81609b16>] ? cpuidle_enter_state+0x66/0x160
[ 2744.553084] [<ffffffff81609b01>] ? cpuidle_enter_state+0x51/0x160
[ 2744.553087] [<ffffffff81609cf7>] cpuidle_enter+0x17/0x20
[ 2744.553092] [<ffffffff810de101>] cpu_startup_entry+0x321/0x3c0
[ 2744.553098] [<ffffffff81764497>] rest_init+0x77/0x80
[ 2744.553103] [<ffffffff81d4f02c>] start_kernel+0x4a4/0x4c5
[ 2744.553107] [<ffffffff81d4e120>] ? early_idt_handlers+0x120/0x120
[ 2744.553110] [<ffffffff81d4e4d7>] x86_64_start_reservations+0x2a/0x2c
[ 2744.553114] [<ffffffff81d4e62b>] x86_64_start_kernel+0x152/0x175
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/intel/fm10k/fm10k_ptp.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_ptp.c b/drivers/net/ethernet/intel/fm10k/fm10k_ptp.c index 9043633c3e50..95f1d62b0690 100644 --- a/drivers/net/ethernet/intel/fm10k/fm10k_ptp.c +++ b/drivers/net/ethernet/intel/fm10k/fm10k_ptp.c @@ -103,9 +103,10 @@ void fm10k_ts_tx_hwtstamp(struct fm10k_intfc *interface, __le16 dglort, if (!skb) return; - /* timestamp the sk_buff and return it to the socket */ + /* timestamp the sk_buff and free out copy */ fm10k_systime_to_hwtstamp(interface, &shhwtstamps, systime); - skb_complete_tx_timestamp(skb, &shhwtstamps); + skb_tstamp_tx(skb, &shhwtstamps); + dev_kfree_skb_any(skb); } void fm10k_ts_tx_subtask(struct fm10k_intfc *interface) |
