This report should probably have gone to the btrfs people, although it doesn't really look like a bug.
It looks like it's just dm-flakey now returning more errors, and causing btrfs to complain more. Which seems entirely expected. Maybe the robot just was testing a error case that didn't actually happen before. Linus On Mon, Aug 8, 2016 at 1:00 AM, kernel test robot <xiaolong...@intel.com> wrote: > > FYI, we noticed the following commit: > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > commit 99f3c90d0d85708e7401a81ce3314e50bf7f2819 ("dm flakey: error READ bios > during the down_interval") > > in testcase: xfstests > with following parameters: > > disk: 4HDD > fs: btrfs > test: generic-slow3 > > > on test machine: 24 threads Westmere-EP with 16G memory > > caused below changes: > > > kern :err : [ 326.754793] BTRFS error (device dm-0): bdev > /dev/mapper/flakey-test errs: wr 0, rd 1, flush 0, corrupt 0, gen 0 > kern :err : [ 326.765309] BTRFS error (device dm-0): bdev > /dev/mapper/flakey-test errs: wr 0, rd 2, flush 0, corrupt 0, gen 0 > kern :warn : [ 326.775848] ------------[ cut here ]------------ > kern :warn : [ 326.780679] WARNING: CPU: 20 PID: 1027 at > fs/btrfs/extent-tree.c:2973 btrfs_run_delayed_refs+0x2c5/0x2f0 [btrfs] > kern :debug : [ 326.792555] BTRFS: Transaction aborted (error -5) > kern :warn : [ 326.797436] Modules linked in: dm_flakey ipmi_devintf > dm_mod btrfs xor raid6_pq ses enclosure rpcsec_gss_krb5 auth_rpcgss nfsv4 > dns_resolver sg sr_mod cdrom ata_generic sd_mod pata_acpi intel_powerclamp > coretemp kvm_intel mptsas mptscsih kvm snd_pcm irqbypass crct10dif_pclmul > crc32_pclmul snd_timer crc32c_intel pata_jmicron mptbase ahci libahci snd > ghash_clmulni_intel soundcore ppdev aesni_intel lrw gf128mul glue_helper > ablk_helper cryptd scsi_transport_sas i7core_edac ipmi_si serio_raw pcspkr > libata parport_pc edac_core shpchp parport ipmi_msghandler acpi_cpufreq > kern :warn : [ 326.851992] CPU: 20 PID: 1027 Comm: umount Not tainted > 4.7.0-10769-g99f3c90 #1 > kern :warn : [ 326.859514] Hardware name: Supermicro X8DTN/X8DTN, BIOS > 4.6.3 01/06/2010 > kern :warn : [ 326.866388] 0000000000000000 ffff8803f905bc30 > ffffffff8143e1d9 ffff8803f905bc80 > kern :warn : [ 326.874322] 0000000000000000 ffff8803f905bc70 > ffffffff8107e50b 00000b9d3bc41000 > kern :warn : [ 326.882251] ffffffffa04a25d0 ffff88043b7e0850 > ffff88043dd56730 0000000000000000 > kern :warn : [ 326.890185] Call Trace: > kern :warn : [ 326.892810] [<ffffffff8143e1d9>] dump_stack+0x63/0x8a > kern :warn : [ 326.898123] [<ffffffff8107e50b>] __warn+0xcb/0xf0 > kern :warn : [ 326.903090] [<ffffffff8107e57f>] > warn_slowpath_fmt+0x4f/0x60 > kern :warn : [ 326.909019] [<ffffffffa04046c5>] > btrfs_run_delayed_refs+0x2c5/0x2f0 [btrfs] > kern :warn : [ 326.916240] [<ffffffff811e3df6>] ? > kmem_cache_alloc+0x1a6/0x1c0 > kern :warn : [ 326.922429] [<ffffffffa041aa33>] > btrfs_commit_transaction+0x43/0xa90 [btrfs] > kern :warn : [ 326.929744] [<ffffffffa03e61e6>] btrfs_sync_fs+0x66/0x130 > [btrfs] > kern :warn : [ 326.936096] [<ffffffff8123dcb3>] sync_filesystem+0x73/0xa0 > kern :warn : [ 326.941842] [<ffffffff8120b347>] > generic_shutdown_super+0x27/0x100 > kern :warn : [ 326.948280] [<ffffffff8120b6b2>] kill_anon_super+0x12/0x20 > kern :warn : [ 326.954030] [<ffffffffa03e73f8>] > btrfs_kill_super+0x18/0x110 [btrfs] > kern :warn : [ 326.960649] [<ffffffff8120b863>] > deactivate_locked_super+0x43/0x70 > kern :warn : [ 326.967087] [<ffffffff8120bd4a>] deactivate_super+0x5a/0x60 > kern :warn : [ 326.972918] [<ffffffff8122a6cf>] cleanup_mnt+0x3f/0x90 > kern :warn : [ 326.978317] [<ffffffff8122a762>] __cleanup_mnt+0x12/0x20 > kern :warn : [ 326.983890] [<ffffffff8109c175>] task_work_run+0x85/0xc0 > kern :warn : [ 326.989464] [<ffffffff810032a2>] > exit_to_usermode_loop+0xc2/0xd0 > kern :warn : [ 326.995729] [<ffffffff81003b41>] > syscall_return_slowpath+0xa1/0xb0 > kern :warn : [ 327.002175] [<ffffffff819322ba>] > entry_SYSCALL_64_fastpath+0xa2/0xa4 > kern :warn : [ 327.002223] ---[ end trace 0e82b94d9eb7c6ea ]--- > kern :crit : [ 327.002225] BTRFS: error (device dm-0) in > btrfs_run_delayed_refs:2973: errno=-5 IO failure > > > > To reproduce: > > git clone > git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git > cd lkp-tests > bin/lkp install job.yaml # job file is attached in this email > bin/lkp run job.yaml > > > > Thanks, > Xiaolong -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html