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Date: Sat, 28 Mar 2020 21:19:56 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org
Subject: [tracing] ff895103a8:
BUG:sleeping_function_called_from_invalid_context_at_mm/slab.h
FYI, we noticed the following commit (built with gcc-7):
commit: ff895103a84abc85a5f43ecabc7f67cf36e1348f ("tracing: Save off entry when peeking at next entry")
https://git.kernel.org/cgit/linux/kernel/git/rostedt/linux-trace.git ftrace/core
in testcase: rcuperf
with following parameters:
runtime: 300s
perf_type: srcud
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):
+----------------------------------------------------------------+------------+------------+
| | 8c77f0ba41 | ff895103a8 |
+----------------------------------------------------------------+------------+------------+
| boot_successes | 4 | 4 |
| boot_failures | 0 | 4 |
| BUG:sleeping_function_called_from_invalid_context_at_mm/slab.h | 0 | 4 |
+----------------------------------------------------------------+------------+------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <rong.a.chen@...el.com>
[ 19.755781] BUG: sleeping function called from invalid context at mm/slab.h:565
[ 19.757001] in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 597, name: rcu_perf_writer
[ 19.758163] no locks held by rcu_perf_writer/597.
[ 19.758798] CPU: 1 PID: 597 Comm: rcu_perf_writer Tainted: G T 5.6.0-rc4-00008-gff895103a84ab #2
[ 19.760123] Call Trace:
[ 19.760473] ? dump_stack+0x6b/0xa1
[ 19.760955] ? ___might_sleep+0x146/0x170
[ 19.761507] ? __kmalloc+0x73/0x300
[ 19.762010] ? trace_find_next_entry+0x5c/0x120
[ 19.762626] ? trace_find_next_entry+0x5c/0x120
[ 19.763243] ? trace_print_lat_context+0x29/0x3b0
[ 19.763885] ? find_next_bit+0x29/0x40
[ 19.764398] ? __find_next_entry+0x10d/0x170
[ 19.764979] ? print_trace_line+0x475/0x570
[ 19.765551] ? ftrace_dump+0x173/0x250
[ 19.766027] ? rcu_perf_writer+0x345/0x480 [rcuperf]
[ 19.766457] ? kthread+0xf7/0x100
[ 19.766747] ? rcu_perf_wait_shutdown+0x60/0x60 [rcuperf]
[ 19.767208] ? kthread_stop+0x210/0x210
[ 19.767542] ? ret_from_fork+0x1e/0x28
[ 19.767883] rb_produ-167 1.... 1976130us : ring_buffer_producer_thread: Starting ring buffer hammer
[ 19.768684] rb_produ-167 0.... 11977103us : ring_buffer_producer_thread: End ring buffer hammer
[ 19.769457] rb_produ-167 0.... 12023757us : ring_buffer_producer_thread: Running Consumer at nice: 19
[ 19.770282] rb_produ-167 0.... 12023758us : ring_buffer_producer_thread: Running Producer at nice: 19
[ 19.771094] rb_produ-167 0.... 12023758us : ring_buffer_producer_thread: WARNING!!! This test is running at lowest priority.
[ 19.772075] rb_produ-167 0.... 12023758us : ring_buffer_producer_thread: Time: 10000957 (usecs)
[ 19.772874] rb_produ-167 0.... 12023759us : ring_buffer_producer_thread: Overruns: 34670819
[ 19.773620] rb_produ-167 0.... 12023759us : ring_buffer_producer_thread: Read: 7743031 (by events)
[ 19.774451] rb_produ-167 0.... 12023760us : ring_buffer_producer_thread: Entries: 0
[ 19.775140] rb_produ-167 0.... 12023760us : ring_buffer_producer_thread: Total: 42413850
[ 19.775878] rb_produ-167 0.... 12023760us : ring_buffer_producer_thread: Missed: 0
[ 19.776576] rb_produ-167 0.... 12023760us : ring_buffer_producer_thread: Hit: 42413850
[ 19.777313] rb_produ-167 0.... 12023760us : ring_buffer_producer_thread: Entries per millisec: 4241
[ 19.778118] rb_produ-167 0.... 12023761us : ring_buffer_producer_thread: 235 ns per entry
[ 19.778849] rb_produ-167 0.... 12023761us : ring_buffer_producer_thread: Sleeping for 10 secs
[ 19.779600] ---------------------------------
[ 19.791139] random: fast init done
[ 19.791524] srcud-perf: Test complete
Elapsed time: 60
qemu-img create -f qcow2 disk-vm-snb-i386-37-0 256G
qemu-img create -f qcow2 disk-vm-snb-i386-37-1 256G
qemu-img create -f qcow2 disk-vm-snb-i386-37-2 256G
qemu-img create -f qcow2 disk-vm-snb-i386-37-3 256G
qemu-img create -f qcow2 disk-vm-snb-i386-37-4 256G
qemu-img create -f qcow2 disk-vm-snb-i386-37-5 256G
qemu-img create -f qcow2 disk-vm-snb-i386-37-6 256G
kvm=(
qemu-system-i386
-enable-kvm
-cpu SandyBridge
-kernel $kernel
-initrd initrd-vm-snb-i386-37.cgz
-m 8192
-smp 2
-device e1000,netdev=net0
-netdev user,id=net0,hostfwd=tcp::32032-:22
-boot order=nc
-no-reboot
-watchdog i6300esb
-watchdog-action debug
-rtc base=localtime
-drive file=disk-vm-snb-i386-37-0,media=disk,if=virtio
-drive file=disk-vm-snb-i386-37-1,media=disk,if=virtio
-drive file=disk-vm-snb-i386-37-2,media=disk,if=virtio
-drive file=disk-vm-snb-i386-37-3,media=disk,if=virtio
-drive file=disk-vm-snb-i386-37-4,media=disk,if=virtio
-drive file=disk-vm-snb-i386-37-5,media=disk,if=virtio
-drive file=disk-vm-snb-i386-37-6,media=disk,if=virtio
-serial stdio
-display none
-monitor null
)
append=(
ip=::::vm-snb-i386-37::dhcp
root=/dev/ram0
user=lkp
job=/job-script
ARCH=i386
kconfig=i386-randconfig-b003-20200324
branch=linux-devel/devel-hourly-2020032506
commit=ff895103a84abc85a5f43ecabc7f67cf36e1348f
BOOT_IMAGE=/pkg/linux/i386-randconfig-b003-20200324/gcc-7/ff895103a84abc85a5f43ecabc7f67cf36e1348f/vmlinuz-5.6.0-rc4-00008-gff895103a84ab
max_uptime=1500
RESULT_ROOT=/result/rcuperf/srcud-300s/vm-snb-i386/yocto-i386-minimal-20190520.cgz/i386-randconfig-b003-20200324/gcc-7/ff895103a84abc85a5f43ecabc7f67cf36e1348f/3
result_service=tmpfs
selinux=0
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
net.ifnames=0
printk.devkmsg=on
panic=-1
softlockup_panic=1
nmi_watchdog=panic
oops=panic
load_ramdisk=2
To reproduce:
# build kernel
cd linux
cp config-5.6.0-rc4-00008-gff895103a84ab .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-rc4-00008-gff895103a84ab" of type "text/plain" (132989 bytes)
View attachment "job-script" of type "text/plain" (4481 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (13776 bytes)
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