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Date: Wed, 4 Mar 2020 08:25:42 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: Anshuman Khandual <anshuman.khandual@....com>
Cc: Stephen Rothwell <sfr@...b.auug.org.au>,
Christophe Leroy <christophe.leroy@....fr>,
Catalin Marinas <catalin.marinas@....com>,
Ingo Molnar <mingo@...nel.org>,
Mike Rapoport <rppt@...ux.ibm.com>,
Vineet Gupta <vgupta@...opsys.com>,
Will Deacon <will@...nel.org>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Paul Mackerras <paulus@...ba.org>,
Michael Ellerman <mpe@...erman.id.au>,
Heiko Carstens <heiko.carstens@...ibm.com>,
Vasily Gorbik <gor@...ux.ibm.com>,
Christian Borntraeger <borntraeger@...ibm.com>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
"H. Peter Anvin" <hpa@...or.com>,
"Kirill A. Shutemov" <kirill@...temov.name>,
Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>,
Andrew Morton <akpm@...ux-foundation.org>,
LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org
Subject: [mm/debug] 216e0b7a58: BUG:non-zero_pgtables_bytes_on_freeing_mm
FYI, we noticed the following commit (built with gcc-7):
commit: 216e0b7a586b92c286da611aad11ec36e8985755 ("mm/debug: add tests validating architecture page table helpers")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
in testcase: trinity
with following parameters:
runtime: 300s
test-description: Trinity is a linux system call fuzz tester.
test-url: http://codemonkey.org.uk/projects/trinity/
on test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 8G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+-------------------------------------------------------------------------------+------------+------------+
| | ddad3873db | 216e0b7a58 |
+-------------------------------------------------------------------------------+------------+------------+
| boot_successes | 7 | 0 |
| boot_failures | 5 | 12 |
| WARNING:at_kernel/rcu/rcutorture.c:#rcutorture_oom_notify | 5 | |
| EIP:rcutorture_oom_notify | 5 | |
| WARNING:at_kernel/locking/lockdep.c:#mark_lock | 1 | |
| EIP:mark_lock | 1 | |
| BUG:kernel_hang_in_test_stage | 2 | |
| page_allocation_failure:order:#,mode:#(GFP_NOWAIT|__GFP_COMP),nodemask=(null) | 2 | |
| Mem-Info | 2 | |
| INFO:trying_to_register_non-static_key | 3 | 1 |
| BUG:unable_to_handle_page_fault_for_address | 1 | |
| Oops:#[##] | 1 | |
| EIP:rcu_torture_fwd_prog_cbfree | 1 | |
| Kernel_panic-not_syncing:Fatal_exception | 1 | |
| BUG:non-zero_pgtables_bytes_on_freeing_mm | 0 | 12 |
| BUG:Bad_page_state_in_process | 0 | 12 |
+-------------------------------------------------------------------------------+------------+------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <rong.a.chen@...el.com>
[ 15.579147] BUG: non-zero pgtables_bytes on freeing mm: -4096
[ 15.579586] debug: unmapping init [mem 0xc885e000-0xc8a2cfff]
[ 15.580585] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[ 15.581619] cfg80211: failed to load regulatory.db
[ 15.600801] random: fast init done
[ 15.611059] Write protecting kernel text and read-only data: 13616k
[ 15.611834] NX-protecting the kernel data: 8620k
[ 15.625996] x86/mm: Checked W+X mappings: passed, no W+X pages found.
[ 15.626813] rodata_test: all tests were successful
[ 15.627380] Run /init as init process
[ 15.627809] with arguments:
[ 15.628165] /init
[ 15.628442] with environment:
[ 15.628817] HOME=/
[ 15.629103] TERM=linux
[ 15.629431] user=lkp
[ 15.629736] job=/lkp/jobs/scheduled/vm-snb-i386-14/trinity-300s-yocto-i386-minimal-20190520.cgz-216e0b7a586b92c286da611aad11ec36e8985755-20200304-4330-u6qq9b-10.yaml
[ 15.631436] ARCH=i386
[ 15.631718] kconfig=i386-randconfig-e002-20200228
[ 15.632234] branch=linux-review/Qiujun-Huang/kcsan-Fix-a-typo-in-a-comment/20200228-201130
[ 15.633132] commit=216e0b7a586b92c286da611aad11ec36e8985755
[ 15.633780] BOOT_IMAGE=/pkg/linux/i386-randconfig-e002-20200228/gcc-7/216e0b7a586b92c286da611aad11ec36e8985755/vmlinuz-5.6.0-rc3-00029-g216e0b7a586b9
[ 15.635178] max_uptime=1500
[ 15.635566] RESULT_ROOT=/result/trinity/300s/vm-snb-i386/yocto-i386-minimal-20190520.cgz/i386-randconfig-e002-20200228/gcc-7/216e0b7a586b92c286da611aad11ec36e8985755/8
[ 15.637029] LKP_SERVER=inn
[ 15.637260] selinux=0
[ 15.637458] nmi_watchdog=panic
[ 15.637711] prompt_ramdisk=0
[ 15.637952] earlyprintk=ttyS0,115200
[ 15.638243] vga=normal
[ 15.638616] BUG: Bad page state in process swapper/0 pfn:1dc26
[ 15.639103] page:ef9af558 refcount:-1 mapcount:0 mapping:00000000 index:0x0
[ 15.639610] flags: 0x0()
[ 15.639805] raw: 00000000 00000100 00000122 00000000 00000000 c01153c0 ffffffff ffffffff
[ 15.640392] raw: 00000000
[ 15.640591] page dumped because: nonzero _refcount
[ 15.640942] Modules linked in:
[ 15.641174] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.6.0-rc3-00029-g216e0b7a586b9 #1
[ 15.641751] Call Trace:
[ 15.642003] dump_stack+0x9a/0xd4
[ 15.642302] bad_page+0xc6/0x130
[ 15.642549] check_new_page_bad+0x51/0x70
[ 15.642848] get_page_from_freelist+0x1063/0x1660
[ 15.643237] ? sched_clock_cpu+0x19/0x140
[ 15.643641] __alloc_pages_nodemask+0xee/0xdc0
[ 15.644205] ? __lock_acquire+0x1a7e/0x1f10
[ 15.644597] ? cache_grow_begin+0x565/0xaa0
[ 15.644994] ? lockdep_hardirqs_on+0x124/0x1b0
[ 15.645321] ? cache_grow_begin+0x565/0xaa0
[ 15.645709] ? kmem_cache_alloc+0x310/0x700
[ 15.646035] ? trace_hardirqs_on+0x35/0xf0
[ 15.646341] cache_grow_begin+0x58c/0xaa0
[ 15.646717] ? kmem_cache_alloc+0x93/0x700
[ 15.647030] kmem_cache_alloc+0x310/0x700
[ 15.647369] vm_area_alloc+0x16/0x40
[ 15.647645] __do_execve_file+0x2d5/0x920
[ 15.647953] do_execve+0x1f/0x30
[ 15.648215] run_init_process+0x58/0xa0
[ 15.648508] ? rest_init+0x220/0x220
[ 15.648806] kernel_init+0x50/0xf0
[ 15.649070] ret_from_fork+0x33/0x40
[ 15.649344] Disabling lock debugging due to kernel taint
[ 15.655890] mount (200) used greatest stack depth: 4 bytes left
Starting udev
[ 15.696213] udevd[226]: starting version 3.2.7
[ 15.697231] random: udevd: uninitialized urandom read (16 bytes read)
[ 15.703596] random: udevd: uninitialized urandom read (16 bytes read)
[ 15.704416] random: udevd: uninitialized urandom read (16 bytes read)
[ 15.706631] udevd[226]: specified group 'kvm' unknown
[ 15.709584] udevd[227]: starting eudev-3.2.7
[ 15.740547] udevd[227]: specified group 'kvm' unknown
[ 15.756776] Linux agpgart interface v0.103
[ 15.783499] rtc_cmos 00:00: RTC can wake from S4
[ 15.784329] piix4_smbus 0000:00:01.3: SMBus Host Controller at 0x700, revision 0
[ 15.788266] piix4_smbus 0000:00:01.3: SMBus region 0x700 already in use!
[ 15.788768] piix4_smbus: probe of 0000:00:01.3 failed with error -16
[ 15.803389] rtc_cmos 00:00: registered as rtc0
[ 15.804107] rtc_cmos 00:00: alarms up to one day, y3k, 114 bytes nvram, hpet irqs
[ 15.805588] rtc_cmos 00:00: RTC can wake from S4
[ 15.820863] rtc_cmos 00:00: registered as rtc1
[ 15.821565] rtc_cmos 00:00: alarms up to one day, y3k, 114 bytes nvram, hpet irqs
LKP: HOSTNAME vm-snb-i386-14, MAC 6a:43:f3:2d:8e:16, kernel 5.6.0-rc3-00029-g216e0b7a586b9 1, serial console /dev/ttyS0
Poky (Yocto Project Reference Distro) 2.7+snapshot vm-snb-i386-14 /dev/ttyS0
[ 28.765565] can: request_module (can-proto-1) failed.
[ 28.766367] can: request_module (can-proto-2) failed.
[ 28.785933] VFS: Warning: trinity-c2 using old stat() call. Recompile your binary.
[ 28.822322] warning: process `trinity-c4' used the deprecated sysctl system call with
[ 28.831669] VFS: Warning: trinity-c1 using old stat() call. Recompile your binary.
[ 28.833558] VFS: Warning: trinity-c3 using old stat() call. Recompile your binary.
[ 28.835219] vm86_32: Denied a call to vm86(old) from trinity-c3[764] (uid: 65534). Set the vm.mmap_min_addr sysctl to 0 and/or adjust LSM mmap_min_addr policy to enable vm86 if you are using a vm86-based DOS emulator.
[ 28.840307] audit: type=1326 audit(1583252334.460:2): auid=4294967295 uid=65534 gid=65534 ses=4294967295 pid=764 comm="trinity-c3" exe="/bin/trinity" sig=9 arch=40000003 syscall=19 compat=0 ip=0xb7f2eb39 code=0x0
[ 28.842728] VFS: Warning: trinity-c5 using old stat() call. Recompile your binary.
[ 28.845737] VFS: Warning: trinity-c5 using old stat() call. Recompile your binary.
[ 28.864103] audit: type=1326 audit(1583252334.490:3): auid=4294967295 uid=65534 gid=65534 ses=4294967295 pid=761 comm="trinity-c0" exe="/bin/trinity" sig=9 arch=40000003 syscall=19 compat=0 ip=0xb7f2eb39 code=0x0
[ 29.881821] raw_sendmsg: trinity-c7 forgot to set AF_INET. Fix it!
[ 31.140533] random: crng init done
[ 31.149362] random: 5 urandom warning(s) missed due to ratelimiting
[ 31.152945] audit: type=1326 audit(1583252336.780:4): auid=4294967295 uid=65534 gid=65534 ses=4294967295 pid=779 comm="trinity-c3" exe="/bin/trinity" sig=9 arch=40000003 syscall=19 compat=0 ip=0xb7f2eb39 code=0x0
[ 31.264643] audit: type=1326 audit(1583252336.890:5): auid=4294967295 uid=65534 gid=65534 ses=4294967295 pid=767 comm="trinity-c6" exe="/bin/trinity" sig=9 arch=40000003 syscall=19 compat=0 ip=0xb7f2eb39 code=0x0
[ 31.290796] audit: type=1326 audit(1583252336.920:6): auid=4294967295 uid=65534 gid=65534 ses=4294967295 pid=806 comm="trinity-c6" exe="/bin/trinity" sig=9 arch=40000003 syscall=19 compat=0 ip=0xb7f2eb39 code=0x0
[ 31.425043] audit: type=1326 audit(1583252337.050:7): auid=4294967295 uid=65534 gid=65534 ses=4294967295 pid=808 comm="trinity-c6" exe="/bin/trinity" sig=9 arch=40000003 syscall=19 compat=0 ip=0xb7f2eb39 code=0x0
[ 31.878089] audit: type=1326 audit(1583252337.500:8): auid=4294967295 uid=65534 gid=65534 ses=4294967295 pid=762 comm="trinity-c1" exe="/bin/trinity" sig=9 arch=40000003 syscall=19 compat=0 ip=0xb7f2eb39 code=0x0
[ 32.165271] futex_wake_op: trinity-c2 tries to shift op by -16; fix this program
[ 32.444872] audit: type=1326 audit(1583252338.070:9): auid=4294967295 uid=65534 gid=65534 ses=4294967295 pid=810 comm="trinity-c6" exe="/bin/trinity" sig=9 arch=40000003 syscall=19 compat=0 ip=0xb7f2eb39 code=0x0
[ 32.577475] audit: type=1326 audit(1583252338.200:10): auid=4294967295 uid=65534 gid=65534 ses=4294967295 pid=780 comm="trinity-c0" exe="/bin/trinity" sig=9 arch=40000003 syscall=19 compat=0 ip=0xb7f2eb39 code=0x0
[ 39.265054] kauditd_printk_skb: 2 callbacks suppressed
[ 39.265057] audit: type=1326 audit(1583252344.890:13): auid=4294967295 uid=65534 gid=65534 ses=4294967295 pid=799 comm="trinity-c3" exe="/bin/trinity" sig=9 arch=40000003 syscall=19 compat=0 ip=0xb7f2eb39 code=0x0
[ 42.573997] audit: type=1326 audit(1583252348.200:14): auid=4294967295 uid=65534 gid=65534 ses=4294967295 pid=833 comm="trinity-c0" exe="/bin/trinity" sig=9 arch=40000003 syscall=19 compat=0 ip=0xb7f2eb39 code=0x0
Elapsed time: 60
qemu-img create -f qcow2 disk-vm-snb-i386-14-0 256G
qemu-img create -f qcow2 disk-vm-snb-i386-14-1 256G
qemu-img create -f qcow2 disk-vm-snb-i386-14-2 256G
qemu-img create -f qcow2 disk-vm-snb-i386-14-3 256G
qemu-img create -f qcow2 disk-vm-snb-i386-14-4 256G
qemu-img create -f qcow2 disk-vm-snb-i386-14-5 256G
qemu-img create -f qcow2 disk-vm-snb-i386-14-6 256G
kvm=(
qemu-system-i386
-enable-kvm
-cpu SandyBridge
-kernel $kernel
-initrd initrd-vm-snb-i386-14.cgz
-m 8192
-smp 2
-device e1000,netdev=net0
-netdev user,id=net0,hostfwd=tcp::32032-:22
-boot order=nc
-no-reboot
To reproduce:
# build kernel
cd linux
cp config-5.6.0-rc3-00029-g216e0b7a586b9 .config
make HOSTCC=gcc-7 CC=gcc-7 ARCH=i386 olddefconfig prepare modules_prepare bzImage
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,
Rong Chen
View attachment "config-5.6.0-rc3-00029-g216e0b7a586b9" of type "text/plain" (134176 bytes)
View attachment "job-script" of type "text/plain" (4495 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (13780 bytes)
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