FYI, we noticed the following commit: commit: 136a02c9f038bab95d2a4611e72bde0b50f453c6 ("ext4: Initialize timestamps limits") url: https://github.com/0day-ci/linux/commits/Deepa-Dinamani/vfs-Add-timestamp... in testcase: xfstests with following parameters: disk: 4HDD fs: ext4 test: ext4 test-description: xfstests is a regression test suite for xfs and other files ystems. test-url: git://git.kernel.org/pub/scm/fs/xfs/xfstests-dev.git on test machine: 4 threads Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz with 6G memory caused below changes: +------------------------------------------------------------------+------------+------------+ | | 33da192ade | 136a02c9f0 | +------------------------------------------------------------------+------------+------------+ | boot_successes | 3 | 0 | | boot_failures | 7 | 10 | | WARNING:at_fs/sysfs/dir.c:#sysfs_warn_dup | 4 | 2 | | calltrace:parport_pc_init | 4 | 2 | | calltrace:SyS_finit_module | 4 | 2 | | WARNING:at_lib/kobject.c:#kobject_add_internal | 4 | 2 | | calltrace:SyS_setxattr | 3 | 3 | | calltrace:SyS_open | 3 | 3 | | calltrace:SyS_newlstat | 3 | 3 | | calltrace:SyS_mount | 1 | 8 | | calltrace:SyS_newfstatat | 2 | 4 | | invoked_oom-killer:gfp_mask=0x | 2 | | | Mem-Info | 2 | | | Kernel_panic-not_syncing:Out_of_memory_and_no_killable_processes | 2 | | | WARNING:at_fs/super.c:#mount_fs | 0 | 8 | | BUG:kernel_hang_in_test_stage | 0 | 2 | +------------------------------------------------------------------+------------+------------+ [ 126.315417] run fstests ext4/021 at 2016-12-04 12:28:33 [ 126.660470] EXT4-fs (sda8): mounted filesystem with ordered data mode. Opts: acl,user_xattr [ 126.669568] ------------[ cut here ]------------ [ 126.675048] WARNING: CPU: 0 PID: 3871 at fs/super.c:1203 mount_fs+0x140/0x1b0 [ 126.684334] File times cannot be updated on the filesystem. [ 126.690653] Modules linked in: dm_mod rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole btrfs xor raid6_pq sd_mod sg snd_hda_codec_hdmi ata_generic pata_acpi intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_codec_realtek kvm_intel snd_hda_codec_generic eeepc_wmi asus_wmi sparse_keymap kvm irqbypass crct10dif_pclmul ppdev rfkill crc32_pclmul crc32c_intel pata_via ghash_clmulni_intel ata_piix snd_hda_intel aesni_intel lrw snd_hda_codec gf128mul glue_helper ablk_helper snd_hda_core cryptd snd_hwdep i915 serio_raw libata pcspkr snd_pcm drm_kms_helper syscopyarea sysfillrect snd_timer sysimgblt snd fb_sys_fops soundcore shpchp drm wmi parport_pc parport tpm_infineon video ip_tables [ 126.758802] CPU: 0 PID: 3871 Comm: mount Not tainted 4.9.0-rc6-00137-g136a02c #1 [ 126.766955] Hardware name: System manufacturer System Product Name/P8H67-M PRO, BIOS 1002 04/01/2011 [ 126.776846] ffffc9000801fd70 ffffffff81465e99 ffffc9000801fdc0 0000000000000000 [ 126.785092] ffffc9000801fdb0 ffffffff810803cb 000004b3bcd29780 ffff880133361800 [ 126.793334] ffff8801bd33ad80 ffffffff81ebd3e0 ffff8801bd994000 0000000000000000 [ 126.801573] Call Trace: [ 126.804780] [<ffffffff81465e99>] dump_stack+0x63/0x8a [ 126.810677] [<ffffffff810803cb>] __warn+0xcb/0xf0 [ 126.816219] [<ffffffff8108043f>] warn_slowpath_fmt+0x4f/0x60 [ 126.822701] [<ffffffff813f2f63>] ? security_sb_kern_mount+0x43/0x60 [ 126.829783] [<ffffffff81216570>] mount_fs+0x140/0x1b0 [ 126.835652] [<ffffffff81234127>] vfs_kern_mount+0x67/0x120 [ 126.841957] [<ffffffff812367cf>] do_mount+0x1bf/0xc70 [ 126.847830] [<ffffffff81237583>] SyS_mount+0x83/0xd0 [ 126.853623] [<ffffffff819565b7>] entry_SYSCALL_64_fastpath+0x1a/0xa9 [ 126.860808] ---[ end trace 7a918e7cf033162b ]--- [ 126.866925] ------------[ cut here ]------------ [ 126.872928] WARNING: CPU: 3 PID: 3871 at fs/super.c:1204 mount_fs+0x158/0x1b0 [ 126.882746] Retry mounting the filesystem readonly. [ 126.888950] Modules linked in: dm_mod rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole btrfs xor raid6_pq sd_mod sg snd_hda_codec_hdmi ata_generic pata_acpi intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_codec_realtek kvm_intel snd_hda_codec_generic eeepc_wmi asus_wmi sparse_keymap kvm irqbypass crct10dif_pclmul ppdev rfkill crc32_pclmul crc32c_intel pata_via ghash_clmulni_intel ata_piix snd_hda_intel aesni_intel lrw snd_hda_codec gf128mul glue_helper ablk_helper snd_hda_core cryptd snd_hwdep i915 serio_raw libata pcspkr snd_pcm drm_kms_helper syscopyarea sysfillrect snd_timer sysimgblt snd fb_sys_fops soundcore shpchp drm wmi parport_pc parport tpm_infineon video ip_tables [ 126.959588] CPU: 3 PID: 3871 Comm: mount Tainted: G W 4.9.0-rc6-00137-g136a02c #1 [ 126.969347] Hardware name: System manufacturer System Product Name/P8H67-M PRO, BIOS 1002 04/01/2011 [ 126.979633] ffffc9000801fd70 ffffffff81465e99 ffffc9000801fdc0 0000000000000000 [ 126.988169] ffffc9000801fdb0 ffffffff810803cb 000004b4bcd29780 ffff880133361800 [ 126.996676] ffff8801bd33ad80 ffffffff81ebd3e0 ffff8801bd994000 0000000000000000 [ 127.005174] Call Trace: [ 127.008508] [<ffffffff81465e99>] dump_stack+0x63/0x8a [ 127.014538] [<ffffffff810803cb>] __warn+0xcb/0xf0 [ 127.020184] [<ffffffff8108043f>] warn_slowpath_fmt+0x4f/0x60 [ 127.026817] [<ffffffff813f2f63>] ? security_sb_kern_mount+0x43/0x60 [ 127.034031] [<ffffffff81216588>] mount_fs+0x158/0x1b0 [ 127.040007] [<ffffffff81234127>] vfs_kern_mount+0x67/0x120 [ 127.046386] [<ffffffff812367cf>] do_mount+0x1bf/0xc70 [ 127.052336] [<ffffffff81237583>] SyS_mount+0x83/0xd0 [ 127.058174] [<ffffffff819565b7>] entry_SYSCALL_64_fastpath+0x1a/0xa9 [ 127.065427] ---[ end trace 7a918e7cf033162c ]--- 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