* 3.19-rc7 netconsole locking bug.
@ 2015-02-04 19:39 Dave Jones
2015-02-04 19:59 ` Dave Jones
0 siblings, 1 reply; 3+ messages in thread
From: Dave Jones @ 2015-02-04 19:39 UTC (permalink / raw)
To: netdev
I set up netconsole this morning, and noticed when I rebooted the machine
that this happens when it initializes..
netpoll: netconsole: local port 6666
netpoll: netconsole: local IPv4 address 192.168.42.1
netpoll: netconsole: interface 'eth1'
netpoll: netconsole: remote port 6666
netpoll: netconsole: remote IPv4 address 192.168.42.35
netpoll: netconsole: remote ethernet address 80:ee:73:83:57:4c
netpoll: netconsole: device eth1 not up yet, forcing it
IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
e1000e: eth1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx
IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
BUG: sleeping function called from invalid context at kernel/irq/manage.c:104
in_atomic(): 1, irqs_disabled(): 1, pid: 157, name: exe
2 locks held by exe/157:
#0: (console_lock){+.+.+.}, at: [<ffffffff9510f516>] register_console+0x2a6/0x640
#1: (target_list_lock){......}, at: [<ffffffffc017e1c5>] write_msg+0x65/0x1b0 [netconsole]
irq event stamp: 13456
hardirqs last enabled at (13455): [<ffffffff9510ee3d>] console_unlock+0x57d/0x740
hardirqs last disabled at (13456): [<ffffffff959b242a>] _raw_spin_lock_irqsave+0x3a/0x110
softirqs last enabled at (10536): [<ffffffff957d7975>] __dev_mc_add+0x95/0xb0
softirqs last disabled at (10522): [<ffffffff957d7913>] __dev_mc_add+0x33/0xb0
CPU: 1 PID: 157 Comm: exe Not tainted 3.19.0-rc7+ #13
ffffffff95d3d363 0000000049b1ff09 ffff88007707f978 ffffffff959a5efa
0000000000000000 0000000000000000 ffff88007707f9a8 ffffffff950ca277
ffff88007707f9a8 ffffffff95d3d363 0000000000000068 0000000000000000
Call Trace:
[<ffffffff959a5efa>] dump_stack+0x84/0xb9
[<ffffffff950ca277>] ___might_sleep+0x2d7/0x390
[<ffffffff950ca3b0>] __might_sleep+0x80/0x100
[<ffffffff951123f7>] synchronize_irq+0x67/0x120
[<ffffffff951125a9>] ? __disable_irq_nosync+0x69/0xc0
[<ffffffff95112634>] disable_irq+0x34/0x50
[<ffffffff956c93f5>] e1000_netpoll+0x55/0x1d0
[<ffffffff957fc3f9>] netpoll_poll_dev+0x99/0x300
[<ffffffff957fc83f>] netpoll_send_skb_on_dev+0x1df/0x470
[<ffffffff957fcddc>] netpoll_send_udp+0x30c/0x5a0
[<ffffffffc017e1c5>] ? write_msg+0x65/0x1b0 [netconsole]
[<ffffffffc017e267>] write_msg+0x107/0x1b0 [netconsole]
[<ffffffff9510dad9>] call_console_drivers.constprop.10+0x129/0x190
[<ffffffff9510edf4>] console_unlock+0x534/0x740
[<ffffffff9510f5c8>] register_console+0x358/0x640
[<ffffffffc0186000>] ? 0xffffffffc0186000
[<ffffffffc01862ea>] init_netconsole+0x2ea/0x1000 [netconsole]
[<ffffffff9500038d>] do_one_initcall+0x13d/0x310
[<ffffffff95103d4e>] ? trace_hardirqs_on+0x1e/0x30
[<ffffffff95153895>] load_module+0x22f5/0x28d0
[<ffffffff9514dcb0>] ? store_uevent+0x90/0x90
[<ffffffff95153fc9>] SyS_init_module+0x159/0x200
[<ffffffff959b3912>] system_call_fastpath+0x12/0x17
console [netcon0] enabled
netconsole: network logging started
Despite the positive sounding last two lines, nothing actually gets logged
over the netconsole.
Dave
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: 3.19-rc7 netconsole locking bug.
2015-02-04 19:39 3.19-rc7 netconsole locking bug Dave Jones
@ 2015-02-04 19:59 ` Dave Jones
2015-02-04 23:41 ` Sabrina Dubroca
0 siblings, 1 reply; 3+ messages in thread
From: Dave Jones @ 2015-02-04 19:59 UTC (permalink / raw)
To: netdev
On Wed, Feb 04, 2015 at 02:39:02PM -0500, Dave Jones wrote:
> I set up netconsole this morning, and noticed when I rebooted the machine
> that this happens when it initializes..
> ...
>
> Despite the positive sounding last two lines, nothing actually gets logged
> over the netconsole.
After changing the boot process to modprobe netconsole later, I still
see the same spew, but the console now works.
However, shortly afterwards, there's another locking warning..
BUG: sleeping function called from invalid context at kernel/irq/manage.c:104
in_atomic(): 1, irqs_disabled(): 1, pid: 0, name: swapper/1
4 locks held by swapper/1/0:
#0: (rcu_read_lock){......}, at: [<ffffffffa07c7e98>] __netif_receive_skb_core+0x78/0xc00
#1: (rcu_read_lock_bh){......}, at: [<ffffffffa084676f>] ip_finish_output2+0x9f/0xaa0
#2: (rcu_read_lock_bh){......}, at: [<ffffffffa07cd9a3>] __dev_queue_xmit+0x63/0xbe0
#3: (_xmit_ETHER#2){+.-...}, at: [<ffffffffa0801b3f>] sch_direct_xmit+0x11f/0x330
irq event stamp: 136019
hardirqs last enabled at (136018): [<ffffffffa09b26da>] _raw_spin_unlock_irqrestore+0x5a/0xb0
hardirqs last disabled at (136019): [<ffffffffa09b4cca>] irq_work_interrupt+0x6a/0x80
softirqs last enabled at (135536): [<ffffffffa0093fd5>] _local_bh_enable+0x25/0x80
softirqs last disabled at (135537): [<ffffffffa00952ed>] irq_exit+0x27d/0x2e0
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.19.0-rc7+ #13
ffffffffa0d3d363 2097f77ab05a8c13 ffff88007ec03160 ffffffffa09a5efa
0000000000000000 0000000000000000 ffff88007ec03190 ffffffffa00ca277
ffff88007ec03190 ffffffffa0d3d363 0000000000000068 0000000000000000
Call Trace:
<IRQ> [<ffffffffa09a5efa>] dump_stack+0x84/0xb9
[<ffffffffa00ca277>] ___might_sleep+0x2d7/0x390
[<ffffffffa00ca3b0>] __might_sleep+0x80/0x100
[<ffffffffa01123f7>] synchronize_irq+0x67/0x120
[<ffffffffa01125a9>] ? __disable_irq_nosync+0x69/0xc0
[<ffffffffa0112634>] disable_irq+0x34/0x50
[<ffffffffa06c93f5>] e1000_netpoll+0x55/0x1d0
[<ffffffffa07fc3f9>] netpoll_poll_dev+0x99/0x300
[<ffffffffa07fc83f>] netpoll_send_skb_on_dev+0x1df/0x470
[<ffffffffa07fcddc>] netpoll_send_udp+0x30c/0x5a0
[<ffffffffc016c1c5>] ? write_msg+0x65/0x1b0 [netconsole]
[<ffffffffc016c267>] write_msg+0x107/0x1b0 [netconsole]
[<ffffffffa010dad9>] call_console_drivers.constprop.10+0x129/0x190
[<ffffffffa010edf4>] console_unlock+0x534/0x740
[<ffffffffa010ff8a>] ? vprintk_emit+0x43a/0xa80
[<ffffffffa01103d3>] vprintk_emit+0x883/0xa80
[<ffffffffa00d96ed>] ? local_clock+0x4d/0x60
[<ffffffffa01105f2>] vprintk_default+0x22/0x30
[<ffffffffa09a5369>] printk+0x58/0x75
[<ffffffffa01954fb>] perf_duration_warn+0x6b/0x80
[<ffffffffa0192b6f>] irq_work_run_list+0x7f/0xd0
[<ffffffffa0192be8>] irq_work_run+0x28/0x70
[<ffffffffa000c3c1>] smp_irq_work_interrupt+0x51/0x70
[<ffffffffa09b4ccf>] irq_work_interrupt+0x6f/0x80
[<ffffffffa014ec54>] ? __module_address+0x24/0x1e0
[<ffffffffa014ee2a>] __module_text_address+0x1a/0xb0
[<ffffffffa0155060>] is_module_text_address+0x20/0x40
[<ffffffffa00bd684>] __kernel_text_address+0x94/0xe0
[<ffffffffa0009e0e>] print_context_stack+0x6e/0x130
[<ffffffffa00082e8>] dump_trace+0x2f8/0x600
[<ffffffffa01036eb>] ? mark_held_locks+0xcb/0x110
[<ffffffffa09b26da>] ? _raw_spin_unlock_irqrestore+0x5a/0xb0
[<ffffffffa001acc3>] save_stack_trace+0x33/0x70
[<ffffffffa04452ea>] dma_entry_alloc+0x7a/0xd0
[<ffffffffa0445edb>] debug_dma_map_page+0xdb/0x1e0
[<ffffffffa06c6e87>] e1000_xmit_frame+0xa27/0x1660
[<ffffffffa07cd6fb>] dev_hard_start_xmit+0x4fb/0x740
[<ffffffffa07cd278>] ? dev_hard_start_xmit+0x78/0x740
[<ffffffffa0801b3f>] ? sch_direct_xmit+0x11f/0x330
[<ffffffffa0801b79>] sch_direct_xmit+0x159/0x330
[<ffffffffa07cdcba>] __dev_queue_xmit+0x37a/0xbe0
[<ffffffffa07cd9a3>] ? __dev_queue_xmit+0x63/0xbe0
[<ffffffffa00d96ed>] ? local_clock+0x4d/0x60
[<ffffffffa07ce553>] dev_queue_xmit+0x13/0x20
[<ffffffffa0846ecd>] ip_finish_output2+0x7fd/0xaa0
[<ffffffffa0848788>] ? ip_finish_output+0x498/0x810
[<ffffffffa00f9b7c>] ? __lock_is_held+0x7c/0xb0
[<ffffffffa0848788>] ip_finish_output+0x498/0x810
[<ffffffffa0849fe8>] ip_output+0xb8/0x1a0
[<ffffffffa0841db7>] ip_forward_finish+0xd7/0x2a0
[<ffffffffa0842604>] ip_forward+0x684/0x990
[<ffffffffa083e46b>] ip_rcv_finish+0xeb/0x820
[<ffffffffa083fa05>] ip_rcv+0x3e5/0x5a0
[<ffffffffa07c86ad>] __netif_receive_skb_core+0x88d/0xc00
[<ffffffffa07c7e98>] ? __netif_receive_skb_core+0x78/0xc00
[<ffffffffa07c8a56>] __netif_receive_skb+0x36/0xb0
[<ffffffffa07c9dd6>] netif_receive_skb_internal+0x66/0x3a0
[<ffffffffa08a7c7a>] ? inet_gro_complete+0x5a/0x320
[<ffffffffa07ca39d>] napi_gro_complete+0x28d/0x3a0
[<ffffffffa07ca143>] ? napi_gro_complete+0x33/0x3a0
[<ffffffffa07cafe0>] napi_gro_flush+0xa0/0xe0
[<ffffffffa07cb0f2>] napi_complete_done+0xd2/0x1a0
[<ffffffffa06cdbcb>] e1000e_poll+0x11b/0x3f0
[<ffffffffa07cb3f8>] net_rx_action+0x238/0x4e0
[<ffffffffa00949f6>] __do_softirq+0x1c6/0x460
[<ffffffffa009518c>] ? irq_exit+0x11c/0x2e0
[<ffffffffa00952ed>] irq_exit+0x27d/0x2e0
[<ffffffffa0007b15>] do_IRQ+0x75/0x140
[<ffffffffa09b44af>] common_interrupt+0x6f/0x6f
<EOI> [<ffffffffa076e72a>] ? cpuidle_enter_state+0x7a/0x110
[<ffffffffa076e71e>] ? cpuidle_enter_state+0x6e/0x110
[<ffffffffa076e98a>] cpuidle_enter+0x1a/0x30
[<ffffffffa00f43de>] cpu_startup_entry+0x47e/0x6f0
[<ffffffffa00440a7>] start_secondary+0x2b7/0x3b0
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: 3.19-rc7 netconsole locking bug.
2015-02-04 19:59 ` Dave Jones
@ 2015-02-04 23:41 ` Sabrina Dubroca
0 siblings, 0 replies; 3+ messages in thread
From: Sabrina Dubroca @ 2015-02-04 23:41 UTC (permalink / raw)
To: Dave Jones; +Cc: netdev
2015-02-04, 14:59:01 -0500, Dave Jones wrote:
> On Wed, Feb 04, 2015 at 02:39:02PM -0500, Dave Jones wrote:
> > I set up netconsole this morning, and noticed when I rebooted the machine
> > that this happens when it initializes..
> > ...
> >
> > Despite the positive sounding last two lines, nothing actually gets logged
> > over the netconsole.
>
> After changing the boot process to modprobe netconsole later, I still
> see the same spew, but the console now works.
> However, shortly afterwards, there's another locking warning..
>
> BUG: sleeping function called from invalid context at kernel/irq/manage.c:104
> in_atomic(): 1, irqs_disabled(): 1, pid: 0, name: swapper/1
> 4 locks held by swapper/1/0:
> #0: (rcu_read_lock){......}, at: [<ffffffffa07c7e98>] __netif_receive_skb_core+0x78/0xc00
> #1: (rcu_read_lock_bh){......}, at: [<ffffffffa084676f>] ip_finish_output2+0x9f/0xaa0
> #2: (rcu_read_lock_bh){......}, at: [<ffffffffa07cd9a3>] __dev_queue_xmit+0x63/0xbe0
> #3: (_xmit_ETHER#2){+.-...}, at: [<ffffffffa0801b3f>] sch_direct_xmit+0x11f/0x330
> irq event stamp: 136019
> hardirqs last enabled at (136018): [<ffffffffa09b26da>] _raw_spin_unlock_irqrestore+0x5a/0xb0
> hardirqs last disabled at (136019): [<ffffffffa09b4cca>] irq_work_interrupt+0x6a/0x80
> softirqs last enabled at (135536): [<ffffffffa0093fd5>] _local_bh_enable+0x25/0x80
> softirqs last disabled at (135537): [<ffffffffa00952ed>] irq_exit+0x27d/0x2e0
> CPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.19.0-rc7+ #13
> ffffffffa0d3d363 2097f77ab05a8c13 ffff88007ec03160 ffffffffa09a5efa
> 0000000000000000 0000000000000000 ffff88007ec03190 ffffffffa00ca277
> ffff88007ec03190 ffffffffa0d3d363 0000000000000068 0000000000000000
> Call Trace:
> <IRQ> [<ffffffffa09a5efa>] dump_stack+0x84/0xb9
> [<ffffffffa00ca277>] ___might_sleep+0x2d7/0x390
> [<ffffffffa00ca3b0>] __might_sleep+0x80/0x100
> [<ffffffffa01123f7>] synchronize_irq+0x67/0x120
> [<ffffffffa01125a9>] ? __disable_irq_nosync+0x69/0xc0
> [<ffffffffa0112634>] disable_irq+0x34/0x50
> [<ffffffffa06c93f5>] e1000_netpoll+0x55/0x1d0
> [<ffffffffa07fc3f9>] netpoll_poll_dev+0x99/0x300
> [<ffffffffa07fc83f>] netpoll_send_skb_on_dev+0x1df/0x470
> [<ffffffffa07fcddc>] netpoll_send_udp+0x30c/0x5a0
This looks like the issue I started working on:
https://lkml.org/lkml/2014/10/29/523
https://marc.info/?l=linux-netdev&m=141813589016500&w=2
I will continue. Sorry I let this slide.
--
Sabrina
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2015-02-04 23:41 UTC | newest]
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2015-02-04 19:39 3.19-rc7 netconsole locking bug Dave Jones
2015-02-04 19:59 ` Dave Jones
2015-02-04 23:41 ` Sabrina Dubroca
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