*** perf_fuzzer 0.32-rc0 *** by Vince Weaver
Linux version 3.2.0-4-sparc64 sparc64
Processor: sparc64 UNKNOWN
Stopping after 30000
Watchdog enabled with timeout 60s
Will auto-exit if signal storm detected
Seeding RNG from time 1476817175
To reproduce, try:
echo 1 > /proc/sys/kernel/nmi_watchdog
echo 1 > /proc/sys/kernel/perf_event_paranoid
echo 100000 > /proc/sys/kernel/perf_event_max_sample_rate
./perf_fuzzer -s 30000 -r 1476817175
[ 4993.526227] BUG: Bad page state in process kworker/0:2 pfn:0db6e
[ 4993.526385] page:000001000036db80 count:0 mapcount:0 mapping:fffff8001e8b74b8 index:0x0
[ 4993.526517] page flags: 0x4(referenced)
[ 4993.526615] Modules linked in: ext2 loop snd_sun_cs4231 snd_pcm snd_page_alloc snd_timer snd evdev flash soundcore ext3 mbcache jbd sg sr_mod sd_mod cdrom crc_t10dif sym53c8xx scsi_transport_spi scsi_mod sunhme [last unloaded: scsi_wait_scan]
[ 4993.527301] Call Trace:
[ 4993.527380] [00000000004c7a90] free_pages_prepare+0xc8/0x10c
[ 4993.527489] [00000000004c91a0] free_hot_cold_page+0x18/0x190
[ 4993.527603] [00000000004e9af4] __vunmap+0x98/0xe8
[ 4993.527709] [00000000004c1a30] rb_free_work+0x4c/0x5c
[ 4993.527822] [00000000004718a4] process_one_work+0x264/0x3e0
[ 4993.527929] [0000000000472468] worker_thread+0x1c4/0x2d4
[ 4993.528036] [0000000000475b28] kthread+0x5c/0x70
[ 4993.528135] [000000000042a7c0] kernel_thread+0x30/0x48
[ 4993.528235] [0000000000475dbc] kthreadd+0xbc/0xf8
[ 4993.528320] Disabling lock debugging due to kernel taint
[ 4994.838159] BUG: Bad page state in process kworker/0:2 pfn:0f270
[ 4994.838296] page:00000100003c9c00 count:0 mapcount:0 mapping:fffff8001e8b74b8 index:0x0