Attach kmsg and reproduce script. Note: kernel cmdline contained "memmap=104G!4G memmap=104G!132G"

Thanks, Xiaolong On 03/29, kernel test robot wrote: >Hi, > >We detected below error messages in fio pmem test for btrfs. > >machine: Intel(R) Xeon(R) CPU E5-2695 v3 @ 2.30GHz with 256G memory >kernel: v4.10 >test parameters: > >[global] >bs=2M >ioengine=mmap >iodepth=32 >size=7669584457 >direct=0 >runtime=200 >invalidate=1 >fallocate=posix >group_reporting > >time_based > >[task_0] >rw=write >directory=/fs/pmem0 >numjobs=14 > >[task_1] >rw=write >directory=/fs/pmem1 >numjobs=14 > > >==> /tmp/stderr <== >fio: pid=2214, got signal=7 >fio: pid=2215, got signal=7 >fio: pid=2217, got signal=7 >fio: pid=2220, got signal=7 >fio: pid=2222, got signal=7 >fio: pid=2224, got signal=7 >fio: pid=2225, got signal=7 >fio: pid=2227, got signal=7 >fio: pid=2216, got signal=7 >fio: pid=2218, got signal=7 >fio: pid=2219, got signal=7 >fio: pid=2221, got signal=7 >fio: pid=2223, got signal=7 >fio: pid=2226, got signal=7 >fio: pid=2200, got signal=7 >fio: pid=2201, got signal=7 >fio: pid=2203, got signal=7 >fio: pid=2204, got signal=7 >fio: pid=2205, got signal=7 >fio: pid=2208, got signal=7 >fio: pid=2209, got signal=7 >fio: pid=2210, got signal=7 >fio: pid=2211, got signal=7 >fio: pid=2212, got signal=7 >fio: pid=2213, got signal=7 >fio: pid=2202, got signal=7 >fio: pid=2206, got signal=7 >fio: pid=2207, got signal=7 >fio: file hash not empty on exit > >while fio test is ok for ext4 with the same test parameters. >Attached reproduce.sh may help reproduce the problem. > >Thanks, >Xiaolong

modprobe nd_e820 dmsetup remove_all wipefs -a --force /dev/pmem0 wipefs -a --force /dev/pmem1 mkfs -t btrfs /dev/pmem1 mkfs -t btrfs /dev/pmem0 mkdir -p /fs/pmem0 mount -t btrfs /dev/pmem0 /fs/pmem0 mkdir -p /fs/pmem1 mount -t btrfs /dev/pmem1 /fs/pmem1 for file in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor do echo performance > $file done echo ' [global] bs=2M ioengine=mmap iodepth=32 size=7669584457 direct=0 runtime=200 invalidate=1 fallocate=posix group_reporting time_based [task_0] rw=write directory=/fs/pmem0 numjobs=14 [task_1] rw=write directory=/fs/pmem1 numjobs=14' | fio --output-format=json -

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