lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Date:	Wed, 16 Mar 2016 08:22:05 +0800
From:	kernel test robot <ying.huang@...ux.intel.com>
TO:	Ingo Molnar <mingo@...nel.org>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [lkp] [atomic] 977f35dbf7: BUG: unable to handle kernel NULL
 pointer dereference at           (null)

FYI, we noticed the below changes on

https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.core/urgent
commit 977f35dbf719491997e2e3a09658379f5919dfe9 ("atomic: Fix bugs in 'fetch_or()' and rename it to 'xchg_or()'")


+------------------------------------------+------------+------------+
|                                          | e23604edac | 977f35dbf7 |
+------------------------------------------+------------+------------+
| boot_successes                           | 48         | 2          |
| boot_failures                            | 2          | 4          |
| invoked_oom-killer:gfp_mask=0x           | 2          |            |
| Mem-Info                                 | 2          |            |
| Out_of_memory:Kill_process               | 2          |            |
| backtrace:getname                        | 1          |            |
| backtrace:SyS_execve                     | 1          |            |
| backtrace:_do_fork                       | 2          |            |
| backtrace:call_usermodehelper_exec_work  | 2          |            |
| backtrace:vfs_read                       | 1          |            |
| backtrace:SyS_read                       | 1          |            |
| backtrace:do_sys_open                    | 1          |            |
| backtrace:SyS_open                       | 1          |            |
| BUG:unable_to_handle_kernel              | 0          | 4          |
| Oops                                     | 0          | 4          |
| RIP:set_nr_and_not_polling               | 0          | 4          |
| Kernel_panic-not_syncing:Fatal_exception | 0          | 4          |
| backtrace:cpu_up                         | 0          | 4          |
| backtrace:smp_init                       | 0          | 4          |
| backtrace:kernel_init_freeable           | 0          | 4          |
+------------------------------------------+------------+------------+



[    0.943929] kvm-clock: cpu 1, msr 0:34d8a041, secondary cpu clock
[    0.944728] masked ExtINT on CPU#1
[    0.945203] numa_add_cpu cpu 1 node 0: mask now 0-1
[    0.965760] BUG: unable to handle kernel NULL pointer dereference at           (null)
[    0.967245] IP: [<ffffffff810fee90>] set_nr_and_not_polling+0x19/0x32
[    0.968308] PGD 0 
[    0.968835] Oops: 0002 [#1] SMP DEBUG_PAGEALLOC 
[    0.969817] Modules linked in:
[    0.970467] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.5.0-00482-g977f35d #174
[    0.971730] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[    0.973235] task: ffff88003337c040 ti: ffff880032960000 task.ti: ffff880032960000
[    0.974563] RIP: 0010:[<ffffffff810fee90>]  [<ffffffff810fee90>] set_nr_and_not_polling+0x19/0x32
[    0.976156] RSP: 0000:ffff880032963ce8  EFLAGS: 00010002
[    0.977036] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
[    0.978121] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff880032a082c0
[    0.979222] RBP: ffff880032963ce8 R08: 00000000e272d5c3 R09: 0000000000000004
[    0.980314] R10: ffff880032963ce0 R11: 0000000000000000 R12: ffff880032a082c0
[    0.981400] R13: 0000000000000004 R14: ffff8800349d7d58 R15: 0000000000000001
[    0.982485] FS:  0000000000000000(0000) GS:ffff880034600000(0000) knlGS:0000000000000000
[    0.983846] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[    0.984765] CR2: 0000000000000000 CR3: 0000000004021000 CR4: 00000000000006f0
[    0.985843] Stack:
[    0.986298]  ffff880032963d08 ffffffff81102d59 ffff8800349d7d40 ffff880032a18340
[    0.987854]  ffff880032963d20 ffffffff81103148 ffff8800349d7d40 ffff880032963d48
[    0.989390]  ffffffff811031af ffff8800349d7d40 ffff880032a18340 0000000000000004
[    0.990937] Call Trace:
[    0.991467]  [<ffffffff81102d59>] resched_curr+0x65/0x91
[    0.992326]  [<ffffffff81103148>] check_preempt_curr+0x4a/0x98
[    0.993250]  [<ffffffff811031af>] ttwu_do_wakeup+0x19/0x1bd
[    0.994163]  [<ffffffff8110342f>] ttwu_do_activate+0x76/0x8e
[    0.995223]  [<ffffffff811047c3>] try_to_wake_up+0x1d1/0x21f
[    0.996128]  [<ffffffff81104893>] wake_up_state+0x10/0x12
[    0.997007]  [<ffffffff810faa6c>] __kthread_unpark+0x57/0x5a
[    0.997927]  [<ffffffff810fb02c>] kthread_unpark+0x20/0x22
[    0.998810]  [<ffffffff81169823>] stop_machine_unpark+0x27/0x29
[    0.999738]  [<ffffffff81102805>] sched_cpu_active+0x3a/0x59
[    1.000626]  [<ffffffff810fbcb3>] notifier_call_chain+0x75/0x9c
[    1.001564]  [<ffffffff810fbce8>] __raw_notifier_call_chain+0xe/0x10
[    1.002553]  [<ffffffff810dfa28>] __cpu_notify+0x20/0x35
[    1.003437]  [<ffffffff810dfa50>] cpu_notify+0x13/0x15
[    1.004274]  [<ffffffff810e00e2>] _cpu_up+0xfe/0x128
[    1.005097]  [<ffffffff810e016e>] cpu_up+0x62/0x72
[    1.005890]  [<ffffffff8464fc25>] smp_init+0x76/0x78
[    1.006712]  [<ffffffff846270cd>] kernel_init_freeable+0x13b/0x24c
[    1.007675]  [<ffffffff82eb7039>] ? rest_init+0x140/0x140
[    1.008541]  [<ffffffff82eb7047>] kernel_init+0xe/0xf5
[    1.009409]  [<ffffffff82ec33df>] ret_from_fork+0x3f/0x70
[    1.010272]  [<ffffffff82eb7039>] ? rest_init+0x140/0x140
[    1.011149] Code: 83 c8 ff 5d c3 48 8b 46 58 55 48 89 e5 ff 50 38 5d c3 0f 1f 44 00 00 48 8b 47 08 55 48 89 e5 8b 50 08 89 d6 31 c9 89 d0 83 ce 08 <f0> 0f b1 31 39 c2 74 04 89 c2 eb eb 89 d0 c1 e8 15 83 f0 01 83 
[    1.018637] RIP  [<ffffffff810fee90>] set_nr_and_not_polling+0x19/0x32
[    1.019721]  RSP <ffff880032963ce8>
[    1.020349] CR2: 0000000000000000
[    1.020976] ---[ end trace d3a3d0f2a6730a57 ]---
[    1.021752] Kernel panic - not syncing: Fatal exception


FYI, raw QEMU command line is:

	qemu-system-x86_64 -enable-kvm -cpu Haswell,+smep,+smap -kernel /pkg/linux/x86_64-allyesdebian/gcc-5/977f35dbf719491997e2e3a09658379f5919dfe9/vmlinuz-4.5.0-00482-g977f35d -append 'root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-lkp-wsx03-quantal-x86_64-9/bisect_boot-1-quantal-core-x86_64.cgz-x86_64-allyesdebian-977f35dbf719491997e2e3a09658379f5919dfe9-20160315-24910-fypfl7-0.yaml ARCH=x86_64 kconfig=x86_64-allyesdebian branch=linux-devel/devel-catchup-201603151850 commit=977f35dbf719491997e2e3a09658379f5919dfe9 BOOT_IMAGE=/pkg/linux/x86_64-allyesdebian/gcc-5/977f35dbf719491997e2e3a09658379f5919dfe9/vmlinuz-4.5.0-00482-g977f35d max_uptime=600 RESULT_ROOT=/result/boot/1/vm-lkp-wsx03-quantal-x86_64/quantal-core-x86_64.cgz/x86_64-allyesdebian/gcc-5/977f35dbf719491997e2e3a09658379f5919dfe9/0 LKP_SERVER=inn earlyprintk=ttyS0,115200 systemd.log_level=err debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal rw ip=::::vm-lkp-wsx03-quantal-x86_64-9::dhcp drbd.minor_count=8'  -initrd /fs/sdc1/initrd-vm-lkp-wsx03-quantal-x86_64-9 -m 872 -smp 2 -device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -pidfile /dev/shm/kboot/pid-vm-lkp-wsx03-quantal-x86_64-9 -serial file:/dev/shm/kboot/serial-vm-lkp-wsx03-quantal-x86_64-9 -daemonize -display none -monitor null 




Thanks,
Kernel Test Robot

View attachment "config-4.5.0-00482-g977f35d" of type "text/plain" (150313 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (6312 bytes)

Powered by blists - more mailing lists