Public bug reported: [ Impact ]
fio 3.36-1build2 in Ubuntu Noble crashes on riscv64 $ fio -name test --size=1M --rw=read --bs=4k test: (g=0): rw=read, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=1 fio-3.36 Illegal instruction (core dumped) apport-retrace --gdb shows that the crash occurs when executing rdcycle a3 This is the call stack: #4 0x0000555e549d3a74 in fio_time_init () at time.c:149 #3 0x0000555e549c1dc0 in fio_clock_init () at gettime.c:416 #2 0x0000555e549c106e in calibrate_cpu_clock () at gettime.c:268 #1 get_cycles_per_msec () at gettime.c:246 #0 get_cpu_clock () at arch/arch-riscv64.h:19 A patch resolving the issue is available at https://github.com/axboe/fio/commit/577b85ec41b5560a81a4fb09d1ec7760bcacc49f ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: fio 3.36-1build2 Uname: Linux 6.6.21-5-premier riscv64 ApportVersion: 2.28.1-0ubuntu3.1 Architecture: riscv64 CasperMD5CheckResult: unknown CloudArchitecture: riscv64 CloudBuildName: server CloudID: nocloud CloudName: unknown CloudPlatform: nocloud CloudSerial: 20240423 CloudSubPlatform: seed-dir (/var/lib/cloud/seed/nocloud-net) Date: Thu Nov 7 17:37:00 2024 SourcePackage: fio UpgradeStatus: No upgrade log present (probably fresh install) [ Test Plan ] On a riscv64 system run fio -name test --size=1M --rw=read --bs=4k This should provide output similar too $ fio -name test --size=1M --rw=read --bs=4k test: (g=0): rw=read, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=1 fio-3.36 Starting 1 process test: Laying out IO file (1 file / 1MiB) test: (groupid=0, jobs=1): err= 0: pid=2593: Thu Nov 7 17:42:07 2024 read: IOPS=36.6k, BW=143MiB/s (150MB/s)(1024KiB/7msec) clat (usec): min=7, max=672, avg=21.28, stdev=74.34 lat (usec): min=7, max=673, avg=21.74, stdev=74.43 clat percentiles (usec): | 1.00th=[ 8], 5.00th=[ 8], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 9], 40.00th=[ 9], 50.00th=[ 9], 60.00th=[ 9], | 70.00th=[ 9], 80.00th=[ 9], 90.00th=[ 10], 95.00th=[ 30], | 99.00th=[ 441], 99.50th=[ 611], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] lat (usec) : 10=93.75%, 20=1.17%, 50=0.78%, 100=1.17%, 500=2.34% lat (usec) : 750=0.78% cpu : usr=0.00%, sys=83.33%, ctx=2, majf=0, minf=26 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=256,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=1 Run status group 0 (all jobs): READ: bw=143MiB/s (150MB/s), 143MiB/s-143MiB/s (150MB/s-150MB/s), io=1024KiB (1049kB), run=7-7msec Disk stats (read/write): sda: ios=0/0, sectors=0/0, merge=0/0, ticks=0/0, in_queue=0, util=0.00% [ Where problems could occur ] The suggested patch only affects riscv64. It changes the measuring of time. This could result inaccurate measurements. [ Other Info ] n/a ** Affects: fio (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug cloud-image noble riscv64 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2086920 Title: [SRU] fio 3.36-1build2 in Ubuntu Noble crashes on riscv64 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fio/+bug/2086920/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
