On 2017-09-19 19:55, kernel test robot wrote:
FYI, we noticed the following commit:
commit: ceed73a2cf4aff2921802aa3d21d45280677547d ("drivers: net:
ethernet: qualcomm: rmnet: Initial implementation")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
in testcase: boot
on test machine: qemu-system-i386 -enable-kvm -cpu Haswell,+smep,+smap
-m 360M
caused below changes (please refer to attached dmesg/kmsg for entire
log/backtrace):
+---------------------------------------------------------------------------------------------+------------+------------+
|
| cdf4969c42 | ceed73a2cf |
+---------------------------------------------------------------------------------------------+------------+------------+
| boot_successes
| 52 | 44 |
| boot_failures
| 0 | 8 |
|
drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c:#suspicious_rcu_dereference_check()usage
| 0 | 8 |
+---------------------------------------------------------------------------------------------+------------+------------+
[ 101.364846] WARNING: suspicious RCU usage
[ 101.365654] 4.13.0-rc6-01701-gceed73a #1 Not tainted
[ 101.370873] -----------------------------
[ 101.372472] drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c:57
suspicious rcu_dereference_check() usage!
[ 101.374427]
[ 101.374427] other info that might help us debug this:
[ 101.374427]
[ 101.387491]
[ 101.387491] rcu_scheduler_active = 2, debug_locks = 1
[ 101.389368] 1 lock held by trinity-main/2809:
[ 101.390736] #0: (rtnl_mutex){+.+.+.}, at: [<8146085b>]
rtnl_lock+0xf/0x11
[ 101.395482]
[ 101.395482] stack backtrace:
[ 101.396948] CPU: 0 PID: 2809 Comm: trinity-main Not tainted
4.13.0-rc6-01701-gceed73a #1
[ 101.398857] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 101.401079] Call Trace:
[ 101.401656] dump_stack+0xa1/0xeb
[ 101.402871] lockdep_rcu_suspicious+0xc7/0xd0
[ 101.403665] rmnet_is_real_dev_registered+0x40/0x4e
[ 101.405199] rmnet_config_notify_cb+0x2c/0x142
[ 101.406344] ? wireless_nlevent_flush+0x47/0x71
[ 101.407385] notifier_call_chain+0x2d/0x47
[ 101.408645] raw_notifier_call_chain+0xc/0xe
[ 101.409882] call_netdevice_notifiers_info+0x41/0x49
[ 101.411402] call_netdevice_notifiers+0xc/0xe
[ 101.412713] rollback_registered_many+0x268/0x36e
[ 101.413702] rollback_registered+0x39/0x56
[ 101.414965] unregister_netdevice_queue+0x79/0x88
[ 101.415908] unregister_netdev+0x16/0x1d
[ 101.417030] gprs_attach+0x129/0x133
[ 101.417700] pep_setsockopt+0xa2/0x118
[ 101.418851] sock_common_setsockopt+0x13/0x18
[ 101.420462] SyS_setsockopt+0x59/0x77
[ 101.421196] SyS_socketcall+0x16c/0x1cf
[ 101.422148] do_int80_syscall_32+0x57/0x11d
[ 101.423137] entry_INT80_32+0x33/0x33
[ 101.423827] EIP: 0x77fc61b2
[ 101.424802] EFLAGS: 00000206 CPU: 0
[ 101.425465] EAX: ffffffda EBX: 0000000e ECX: 7fc2cc50 EDX: 7fc2ccd0
[ 101.426928] ESI: 00000005 EDI: 00000152 EBP: 77da037c ESP: 7fc2cc48
[ 101.428482] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached
in this email
Thanks,
Xiaolong
Hi Xiaolong
Thanks for the report.
I am somehow unable to reproduce this on my system.
There are some errors while running lkp.
I'll try to see if I can reproduce this some other way locally.
//some startup errors
cpio: root:lkp: invalid group
...
//errors while executing.
[child0:2600] move_pages (317) returned ENOSYS, marking as inactive.
*** glibc detected *** /trinity: double free or corruption (out):
0x08630000 ***
======= Backtrace: =========
/lib/i386-linux-gnu/libc.so.6(+0x73e42)[0x77e96e42]
/trinity[0x8058af6]
/trinity[0x8051888]
/trinity[0x8054894]
/trinity[0x804a9f5]
/trinity[0x804e3be]
/trinity[0x804a085]
/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0x77e3c4d3]
...
//seems like there is an error while connecting to system bus.
//If this is a known error, is there a workaround for this?
[ 88.296910] init: tty6 main process ended, respawning
error: 'rc.local' exited outside the expected code flow.
[ 97.252708] init: Failed to create pty - disabling logging for job
[ 97.253484] init: Temporary process spawn error: No such file or
directory
[ 97.272202] init: rc main process (330) killed by TERM signal
unable to connect to system bus: Failed to connect to socket
/var/run/dbus/system_bus_socket: No such file or directory
[ 97.274761] init: tty4 main process (2618) killed by TERM signal
[ 97.276215] init: tty5 main process (2619) killed by TERM signal
[ 97.277613] init: tty2 main process (2620) killed by TERM signal
[ 97.279151] init: tty3 main process (2621) killed by TERM signal
[ 97.280569] init: tty6 main process (2622) killed by TERM signal
[ 97.282103] init: hwclock-save main process (2625) terminated with
status 70
[ 97.283737] init: plymouth-upstart-bridge main process (2626)
terminated with status 1
* Asking all remaining processes to terminate...
[ OK ]
* All processes ended within 1 seconds....
[ OK ]
* Deactivating swap...
[ OK ]
umount: /run/lock: not mounted
mount: / is busy
* Will now restart
[ 97.579289] Unregister pv shared memory for cpu 0
[ 97.580380] reboot: Restarting system
[ 97.580716] reboot: machine restart
--
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