On 03/15/2015 05:56 PM, Richard Weinberger wrote:
> Then please move the hardened gcc to /dev/null. ;-)
yes, at least to compile the UML linux
> If you can tell me what hardening feature is the root cause I can think of a
> solution.
Will be a longer way I fear.
Every 2nd or 3rd attempt the UML guest hangs during boot, an immediate attempt
works - so really hard to dig into the root cause.
But I'll try it.
In moment my biggest problem is, that I get the following error as soon as I
try to send out an network package from eth0 (DHCP works, but the first ping to
an ip address outside triggers the error):
Mar 16 14:10:32 trinity logger[1423]: haha
Mar 16 14:10:32 trinity logger[1427]: PING 192.168.1.143 (192.168.1.143) 56(84)
bytes of data.
Mar 16 14:10:32 trinity logger[1427]: 64 bytes from 192.168.1.143: icmp_seq=1
ttl=64 time=0.059 ms
Mar 16 14:10:33 trinity logger[1427]: 64 bytes from 192.168.1.143: icmp_seq=2
ttl=64 time=0.045 ms
Mar 16 14:10:34 trinity logger[1427]: 64 bytes from 192.168.1.143: icmp_seq=3
ttl=64 time=0.056 ms
Mar 16 14:10:34 trinity logger[1427]:
Mar 16 14:10:34 trinity logger[1427]: --- 192.168.1.143 ping statistics ---
Mar 16 14:10:34 trinity logger[1427]: 3 packets transmitted, 3 received, 0%
packet loss, time 2007ms
Mar 16 14:10:34 trinity logger[1427]: rtt min/avg/max/mdev =
0.045/0.053/0.059/0.008 ms
Mar 16 14:10:34 trinity logger[1428]: hoho
Mar 16 14:10:34 trinity kernel: Device 'eth0' read returned -107, shutting it
down
Mar 16 14:10:34 trinity kernel: ------------[ cut here ]------------
Mar 16 14:10:34 trinity kernel: WARNING: CPU: 0 PID: 1429 at
kernel/workqueue.c:1360 __queue_work+0x138/0x250()
Mar 16 14:10:34 trinity kernel: CPU: 0 PID: 1429 Comm: ping Not tainted
4.0.0-rc4 #3
Mar 16 14:10:34 trinity kernel: Stack:
Mar 16 14:10:34 trinity kernel: 084c7678 084c7678 08528547 00000000 83e0e000
00000000 83e0f538 0844315b
Mar 16 14:10:34 trinity kernel: 00000000 83e0f510 83e0f570 0807c42e 084d2fec
00000000 00000595 084d1c08
Mar 16 14:10:34 trinity kernel: 00000550 0808e668 00000550 0808e668 00000000
09bc2300 84d17c98 84c51400
Mar 16 14:10:34 trinity kernel: Call Trace:
Mar 16 14:10:34 trinity kernel: [<08060a36>] show_stack+0xd6/0x1a0
Mar 16 14:10:34 trinity kernel: [<0844315b>] dump_stack+0x26/0x28
Mar 16 14:10:34 trinity kernel: [<0807c42e>] warn_slowpath_common+0x7e/0xc0
Mar 16 14:10:34 trinity kernel: [<0808e668>] ? __queue_work+0x138/0x250
Mar 16 14:10:34 trinity kernel: [<0808e668>] ? __queue_work+0x138/0x250
Mar 16 14:10:34 trinity kernel: [<0807c523>] warn_slowpath_null+0x23/0x30
Mar 16 14:10:34 trinity kernel: [<0808e668>] __queue_work+0x138/0x250
Mar 16 14:10:34 trinity kernel: [<0808eb7f>] queue_work_on+0x2f/0x50
Mar 16 14:10:34 trinity kernel: [<0843fda2>] ? printk+0x1a/0x1c
Mar 16 14:10:34 trinity kernel: [<080675bb>] uml_net_interrupt+0x9b/0xa0
Mar 16 14:10:34 trinity kernel: [<080a67cf>] handle_irq_event_percpu+0x2f/0x110
Mar 16 14:10:34 trinity kernel: [<080a68e4>] handle_irq_event+0x34/0x50
Mar 16 14:10:34 trinity kernel: [<080a8e4e>] handle_edge_irq+0x9e/0x130
Mar 16 14:10:34 trinity kernel: [<080a619b>] generic_handle_irq+0x2b/0x30
Mar 16 14:10:34 trinity kernel: [<0805ed95>] do_IRQ+0x25/0x40
Mar 16 14:10:34 trinity kernel: [<0805ee0b>] sigio_handler+0x5b/0x80
Mar 16 14:10:34 trinity kernel: [<080711b7>] sig_handler_common+0x57/0xd0
Mar 16 14:10:34 trinity kernel: [<08071140>] unblock_signals+0x50/0x70
Mar 16 14:10:34 trinity kernel: [<08071370>] set_signals+0x30/0x40
Mar 16 14:10:34 trinity kernel: [<0844633c>]
_raw_spin_unlock_irqrestore+0x1c/0x20
Mar 16 14:10:34 trinity kernel: [<08066736>] uml_net_start_xmit+0x96/0x160
Mar 16 14:10:34 trinity kernel: [<083a1c5d>] dev_hard_start_xmit+0x1ed/0x330
Mar 16 14:10:34 trinity kernel: [<08071370>] ? set_signals+0x30/0x40
Mar 16 14:10:34 trinity kernel: [<083bc5aa>] sch_direct_xmit+0xda/0x1b0
Mar 16 14:10:34 trinity kernel: [<083a1f60>] __dev_queue_xmit+0x1c0/0x4f0
Mar 16 14:10:34 trinity kernel: [<083a22ed>] dev_queue_xmit+0xd/0x10
Mar 16 14:10:34 trinity kernel: [<083f83e6>] arp_send.part.9+0x46/0x50
Mar 16 14:10:34 trinity kernel: [<083f8c89>] arp_solicit+0xb9/0x240
Mar 16 14:10:34 trinity kernel: [<083946f9>] ? skb_copy+0x99/0xe0
Mar 16 14:10:34 trinity kernel: [<083abe25>] neigh_probe+0x45/0x70
Mar 16 14:10:34 trinity kernel: [<083aee7f>] __neigh_event_send+0x7f/0x220
Mar 16 14:10:34 trinity kernel: [<08446644>] ? _raw_write_unlock_bh+0x24/0x30
Mar 16 14:10:34 trinity kernel: [<083aeca8>] ? __neigh_create+0x4c8/0x620
Mar 16 14:10:34 trinity kernel: [<083afd57>] neigh_resolve_output+0x127/0x210
Mar 16 14:10:34 trinity kernel: [<083cdf60>] ip_finish_output+0x2c0/0x9a0
Mar 16 14:10:34 trinity kernel: [<083ce7de>] ip_output+0x6e/0x80
Mar 16 14:10:34 trinity kernel: [<083ce770>] ? ip_output+0x0/0x80
Mar 16 14:10:34 trinity kernel: [<083ccdda>] ip_local_out_sk+0x2a/0x30
Mar 16 14:10:34 trinity kernel: [<083cf318>] ip_send_skb+0x18/0x80
Mar 16 14:10:34 trinity kernel: [<083cf3c4>] ip_push_pending_frames+0x44/0x50
Mar 16 14:10:34 trinity kernel: [<083f185f>] raw_sendmsg+0x7af/0x8d0
Mar 16 14:10:34 trinity kernel: [<083f0a30>] ? raw_getfrag+0x0/0xf0
Mar 16 14:10:34 trinity kernel: [<08062c06>] ? do_op_one_page+0x136/0x190
Mar 16 14:10:34 trinity kernel: [<080521a0>] ? __reserve+0x10/0xc6
Mar 16 14:10:34 trinity kernel: [<080521a0>] ? __reserve+0x10/0xc6
Mar 16 14:10:34 trinity kernel: [<08062bcb>] ? do_op_one_page+0xfb/0x190
Mar 16 14:10:34 trinity kernel: [<08062c99>] ? buffer_op+0x39/0xe0
Mar 16 14:10:34 trinity kernel: [<08062980>] ? copy_chunk_from_user+0x0/0x30
Mar 16 14:10:34 trinity kernel: [<083fe108>] inet_sendmsg+0x38/0x60
Mar 16 14:10:34 trinity kernel: [<0838ad25>] do_sock_sendmsg+0x75/0x90
Mar 16 14:10:34 trinity kernel: [<0838b925>] ___sys_sendmsg+0x1f5/0x220
Mar 16 14:10:34 trinity kernel: [<080533e0>] ? kmem_cache_init+0x55/0xd8
Mar 16 14:10:34 trinity kernel: [<08072fd9>] ? map+0xf9/0x110
Mar 16 14:10:34 trinity kernel: [<0804b000>] ? eth_setup+0x2c/0x84
Mar 16 14:10:34 trinity kernel: [<0804b000>] ? eth_setup+0x2c/0x84
Mar 16 14:10:34 trinity kernel: [<080629a3>] ? copy_chunk_from_user+0x23/0x30
Mar 16 14:10:34 trinity kernel: [<08062c06>] ? do_op_one_page+0x136/0x190
Mar 16 14:10:34 trinity kernel: [<080a00b1>] ? up_read+0x11/0x20
Mar 16 14:10:34 trinity kernel: [<0811d870>] ? __fdget+0x10/0x20
Mar 16 14:10:34 trinity kernel: [<0838afa5>] ? sockfd_lookup_light+0x15/0x70
Mar 16 14:10:34 trinity kernel: [<0838d2a6>] __sys_sendmsg+0x36/0x70
Mar 16 14:10:34 trinity kernel: [<080521c8>] ? __reserve+0x38/0xc6
Mar 16 14:10:34 trinity kernel: [<0838d950>] SyS_socketcall+0xe0/0x2d0
Mar 16 14:10:34 trinity kernel: [<080521a8>] ? __reserve+0x18/0xc6
Mar 16 14:10:34 trinity kernel: [<080521a8>] ? __reserve+0x18/0xc6
Mar 16 14:10:34 trinity kernel: [<080aae62>] ? SyS_gettimeofday+0x32/0x80
Mar 16 14:10:34 trinity kernel: [<080521a8>] ? __reserve+0x18/0xc6
Mar 16 14:10:34 trinity kernel: [<08062960>] handle_syscall+0x60/0x80
Mar 16 14:10:34 trinity kernel: [<08073dff>] userspace+0x4af/0x5e0
Mar 16 14:10:34 trinity kernel: [<08079276>] ? os_set_thread_area+0x26/0x40
Mar 16 14:10:34 trinity kernel: [<0807829c>] ? do_set_thread_area+0x1c/0x50
Mar 16 14:10:34 trinity kernel: [<0807841d>] ? arch_switch_tls+0xad/0xf0
Mar 16 14:10:34 trinity kernel: [<0805f6a0>] fork_handler+0x60/0x70
Mar 16 14:10:34 trinity kernel:
Mar 16 14:10:34 trinity kernel: ---[ end trace 00741791a3b2d845 ]---
Mar 16 14:10:46 trinity logger[1430]: PING 192.168.1.254 (192.168.1.254) 56(84)
bytes of data.
Mar 16 14:10:46 trinity logger[1430]:
Mar 16 14:10:46 trinity logger[1430]: --- 192.168.1.254 ping statistics ---
Mar 16 14:10:46 trinity logger[1430]: 3 packets transmitted, 0 received, 100%
packet loss, time 2006ms
Mar 16 14:10:46 trinity logger[1430]:
Mar 16 14:10:46 trinity logger[1431]: hihi
Mar 16 14:10:46 trinity logger[1435]: Kernel IP routing table
Mar 16 14:10:46 trinity logger[1435]: Destination Gateway Genmask
Flags Metric Ref Use Iface
Mar 16 14:10:46 trinity logger[1435]: 0.0.0.0 192.168.1.254 0.0.0.0
UG 2 0 0 eth0
Mar 16 14:10:46 trinity logger[1435]: 127.0.0.0 0.0.0.0 255.0.0.0
U 0 0 0 lo
Mar 16 14:10:46 trinity logger[1435]: 127.0.0.0 127.0.0.1 255.0.0.0
UG 0 0 0 lo
Mar 16 14:10:46 trinity logger[1435]: 192.168.0.0 0.0.0.0
255.255.0.0 U 0 0 0 eth0
Mar 16 14:10:46 trinity logger[1437]: eth0:
flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
Mar 16 14:10:46 trinity logger[1437]: inet 192.168.1.143 netmask
255.255.0.0 broadcast 192.168.255.255
Mar 16 14:10:46 trinity logger[1437]: ether 72:ef:3d:9f:c3:5a
txqueuelen 1000 (Ethernet)
Mar 16 14:10:46 trinity logger[1437]: RX packets 1 bytes 28 (28.0 B)
Mar 16 14:10:46 trinity logger[1437]: RX errors 0 dropped 0 overruns
0 frame 0
Mar 16 14:10:46 trinity logger[1437]: TX packets 4 bytes 336 (336.0 B)
Mar 16 14:10:46 trinity logger[1437]: TX errors 0 dropped 0 overruns 0
carrier 0 collisions 0
Mar 16 14:10:46 trinity logger[1437]: device interrupt 5
Mar 16 14:10:46 trinity logger[1437]:
Mar 16 14:10:46 trinity logger[1437]: lo: flags=73<UP,LOOPBACK,RUNNING> mtu
65536
Mar 16 14:10:46 trinity logger[1437]: inet 127.0.0.1 netmask 255.0.0.0
Mar 16 14:10:46 trinity logger[1437]: loop txqueuelen 0 (Local
Loopback)
Mar 16 14:10:46 trinity logger[1437]: RX packets 18 bytes 1440 (1.4
KiB)
Mar 16 14:10:46 trinity logger[1437]: RX errors 0 dropped 0 overruns
0 frame 0
Mar 16 14:10:46 trinity logger[1437]: TX packets 18 bytes 1440 (1.4
KiB)
Mar 16 14:10:46 trinity logger[1437]: TX errors 0 dropped 0 overruns 0
carrier 0 collisions 0
Mar 16 14:10:46 trinity logger[1437]:
Mar 16 14:10:46 trinity shutdown[1438]: shutting down for system halt
FWIW this is the job which is run automatically by an rc script after boot :
t44 / # cat /etc/local.d/c.start
logger haha
ping -c3 192.168.1.143 2>&1 | logger
logger hoho
ping -c3 192.168.1.254 2>&1 | logger
logger hihi
route -n | logger
ifconfig | logger
halt
--
Toralf
pgp key: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 0076 E94E
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