hi, I'm using fio-2.21 built without optimization on Centos based distribution Linux ... 3.10.0-... + #1 SMP Thu May 18 13:39:20 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux fio crashed on segmentation fault. it happened several times, with a different set of parameters, always with ioqueue depth higher than 1. details from one of the crashes follow. thanks, Ido. backtrace from gdb: Program terminated with signal 11, Segmentation fault. #0 0x0000000000479725 in __flist_splice (list=0x7f535a11dbd0, prev=0x7f5337246ee0, next=0x7f5337246ee0) at os/../flist.h:123 123 os/../flist.h: No such file or directory. (gdb) bt #0 0x0000000000479725 in __flist_splice (list=0x7f535a11dbd0, prev=0x7f5337246ee0, next=0x7f5337246ee0) at os/../flist.h:123 #1 0x0000000000479787 in flist_splice_init (list=0x7f535a11dbd0, head=0x7f5337246ee0) at os/../flist.h:157 #2 0x0000000000479ef1 in worker_thread (data=0x7f535a11db70) at workqueue.c:198 #3 0x00007f535b6f3dc5 in start_thread () from /lib64/libpthread.so.0 #4 0x00007f535b21e73d in clone () from /lib64/libc.so.6 (gdb) p first $1 = (struct flist_head *) 0x7f534000c9a0 (gdb) p last $2 = (struct flist_head *) 0x7f534000c8e0 (gdb) p list $3 = (const struct flist_head *) 0x7f535a11dbd0 4 processes failed, at different times (this is the output): write-sg131-64k-para: (g=0): rw=write, bs=(R) 64.0KiB-64.0KiB, (W) 64.0KiB-64.0KiB, (T) 64.0KiB-64.0KiB, ioengine=sg, iodepth=16 randwrite-sg131-64k-para: (g=1): rw=randwrite, bs=(R) 64.0KiB-64.0KiB, (W) 64.0KiB-64.0KiB, (T) 64.0KiB-64.0KiB, ioengine=sg, iodepth=16 read-sg131-64k-para: (g=2): rw=read, bs=(R) 64.0KiB-64.0KiB, (W) 64.0KiB-64.0KiB, (T) 64.0KiB-64.0KiB, ioengine=sg, iodepth=16 randread-sg131-64k-para: (g=3): rw=randread, bs=(R) 64.0KiB-64.0KiB, (W) 64.0KiB-64.0KiB, (T) 64.0KiB-64.0KiB, ioengine=sg, iodepth=16 fio-2.21 Starting 4 processes fio: pid=42510, got signal=118%][r=0KiB/s,w=0KiB/s][r=0,w=0 IOPS][eta 19m:22s] Jobs: 1 (f=1): [K(1),w(1),P(2)][6.6%][r=0KiB/s,w=9031KiB/s][r=0,w=141 IOPS][eta 15m:57s] fio: pid=42573, got signal=11)][11.3%][r=0KiB/s,w=1848KiB/s][r=0,w=28 IOPS][eta 15m:10s] fio: pid=42635, got signal=11)][21.0%][r=0KiB/s,w=0KiB/s][r=0,w=0 IOPS][eta 10m:56s] fio: pid=42696, got signal=11.3%][r=9315KiB/s,w=0KiB/s][r=145,w=0 IOPS][eta 06m:46s] ./fio X.fio (created with genfio, overriding io engine from libaio to sg): [global] ioengine=sg invalidate=1 ramp_time=5 iodepth=16 runtime=300 time_based log_avg_msec=50 log_compression=64k #log_store_compressed=1 [write-sg13-64k-para] bs=64k stonewall filename=/dev/sg13 rw=write write_bw_log=ib43-64k-sg13-write-para.results write_iops_log=ib43-64k-sg13-write-para.results [randwrite-sg13-64k-para] bs=64k stonewall filename=/dev/sg13 rw=randwrite write_bw_log=ib43-64k-sg13-randwrite-para.results write_iops_log=ib43-64k-sg13-randwrite-para.results [read-sg13-64k-para] bs=64k stonewall filename=/dev/sg13 rw=read write_bw_log=ib43-64k-sg13-read-para.results write_iops_log=ib43-64k-sg13-read-para.results [randread-sg13-64k-para] bs=64k stonewall filename=/dev/sg13 rw=randread write_bw_log=ib43-64k-sg13-randread-para.results write_iops_log=ib43-64k-sg13-randread-para.results -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
