FYI, we noticed the following commit (built with gcc-7): commit: 1c6c6a28e3cb24b087e39e4a2cf05373a03b1029 ("[PATCH 2/2] xfs: fix stale data exposure problem when punch hole, collapse range or zero range across a delalloc extent") url: https://github.com/0day-ci/linux/commits/yu-kuai/fix-stale-data-exposure-problem/20191226-235515 base: https://git.kernel.org/cgit/fs/xfs/xfs-linux.git for-next in testcase: xfstests with following parameters: disk: 4HDD fs: xfs test: xfs-group00 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: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +------------------------------------------+------------+------------+ | | b07d72b308 | 1c6c6a28e3 | +------------------------------------------+------------+------------+ | boot_successes | 12 | 0 | | boot_failures | 0 | 12 | | Assertion_failed | 0 | 11 | | kernel_BUG_at_fs/xfs/xfs_message.c | 0 | 11 | | invalid_opcode:#[##] | 0 | 11 | | RIP:assfail[xfs] | 0 | 11 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 11 | | BUG:kernel_hang_in_boot_stage | 0 | 1 | +------------------------------------------+------------+------------+ If you fix the issue, kindly add following tag Reported-by: kernel test robot [ 99.190858] xfs filesystem being mounted at /fs/vda supports timestamps until 2038 (0x7fffffff) [ 99.563545] XFS (vdd): Mounting V5 Filesystem [ 99.570185] XFS (vdd): Ending clean mount [ 99.573413] xfs filesystem being mounted at /fs/scratch supports timestamps until 2038 (0x7fffffff) [ 115.387776] XFS (vdd): Unmounting Filesystem [ 115.412903] XFS: Assertion failed: XFS_FORCED_SHUTDOWN(mp) || percpu_counter_sum(&mp->m_delalloc_blks) == 0, file: fs/xfs/xfs_super.c, line: 1037 [ 115.417044] ------------[ cut here ]------------ [ 115.419081] kernel BUG at fs/xfs/xfs_message.c:110! [ 115.421773] invalid opcode: 0000 [#1] SMP PTI [ 115.423698] CPU: 1 PID: 26348 Comm: umount Not tainted 5.5.0-rc1-00011-g1c6c6a28e3cb2 #3 [ 115.431083] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 [ 115.438291] RIP: 0010:assfail+0x26/0x30 [xfs] [ 115.440301] Code: c3 0f 1f 00 66 66 66 66 90 41 89 c8 48 89 d1 48 89 f2 48 c7 c6 b0 6c 73 c0 e8 66 f9 ff ff 80 3d ab bf 0d 00 00 75 03 0f 0b c3 <0f> 0b 0f 1f 84 00 00 00 00 00 66 66 66 66 90 48 63 f6 6a 01 49 89 [ 115.446597] RSP: 0018:ffffa861043bfe40 EFLAGS: 00010202 [ 115.448838] RAX: 0000000000000000 RBX: ffff9711c9298000 RCX: 0000000000000000 [ 115.451429] RDX: 00000000ffffffc0 RSI: 000000000000000a RDI: ffffffffc0729050 [ 115.454041] RBP: ffff9711c92981a0 R08: 0000000000000000 R09: 0000000000000000 [ 115.456742] R10: 0000000000000007 R11: f000000000000000 R12: ffffffff9032f4f0 [ 115.459299] R13: ffff971228c8b1d8 R14: ffffffff90f8c860 R15: 0000000000000000 [ 115.462264] FS: 00007f041d2d0e40(0000) GS:ffff97123fd00000(0000) knlGS:0000000000000000 [ 115.465521] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 115.468070] CR2: 000055895cb3e4d8 CR3: 00000001c97dc000 CR4: 00000000000406e0 [ 115.470806] Call Trace: [ 115.472591] xfs_destroy_percpu_counters+0x6f/0x80 [xfs] [ 115.474747] xfs_fs_put_super+0x51/0x80 [xfs] [ 115.476589] generic_shutdown_super+0x6c/0x120 [ 115.477765] kill_block_super+0x21/0x50 [ 115.478850] deactivate_locked_super+0x3f/0x70 [ 115.480006] cleanup_mnt+0xb8/0x150 [ 115.481107] task_work_run+0xa3/0xe0 [ 115.482149] exit_to_usermode_loop+0xeb/0xf0 [ 115.483166] do_syscall_64+0x1c6/0x1f0 [ 115.484366] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 115.485815] RIP: 0033:0x7f041cbb4d77 [ 115.487145] Code: 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d f1 00 2b 00 f7 d8 64 89 01 48 [ 115.492858] RSP: 002b:00007fffcff460f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 [ 115.495279] RAX: 0000000000000000 RBX: 000055895cb34080 RCX: 00007f041cbb4d77 [ 115.496926] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 000055895cb3c520 [ 115.498850] RBP: 000055895cb3c520 R08: 00007f041ce65b88 R09: 0000000000000020 [ 115.500278] R10: 00000000000006b4 R11: 0000000000000246 R12: 00007f041d0b6e64 [ 115.502255] R13: 0000000000000000 R14: 000055895cb34260 R15: 00007fffcff46380 [ 115.503715] Modules linked in: xfs libcrc32c dm_mod sr_mod intel_rapl_msr cdrom sg intel_rapl_common crct10dif_pclmul crc32_pclmul crc32c_intel bochs_drm ghash_clmulni_intel ppdev drm_vram_helper ata_generic drm_ttm_helper pata_acpi ttm drm_kms_helper snd_pcm syscopyarea snd_timer sysfillrect sysimgblt snd fb_sys_fops aesni_intel drm crypto_simd soundcore cryptd ata_piix glue_helper pcspkr joydev libata serio_raw i2c_piix4 parport_pc floppy parport ip_tables [ 115.512543] ---[ end trace 073949715e403cad ]--- [ 115.514429] RIP: 0010:assfail+0x26/0x30 [xfs] [ 115.524751] Code: c3 0f 1f 00 66 66 66 66 90 41 89 c8 48 89 d1 48 89 f2 48 c7 c6 b0 6c 73 c0 e8 66 f9 ff ff 80 3d ab bf 0d 00 00 75 03 0f 0b c3 <0f> 0b 0f 1f 84 00 00 00 00 00 66 66 66 66 90 48 63 f6 6a 01 49 89 [ 115.530800] RSP: 0018:ffffa861043bfe40 EFLAGS: 00010202 [ 115.533858] RAX: 0000000000000000 RBX: ffff9711c9298000 RCX: 0000000000000000 [ 115.538918] RDX: 00000000ffffffc0 RSI: 000000000000000a RDI: ffffffffc0729050 [ 115.543574] RBP: ffff9711c92981a0 R08: 0000000000000000 R09: 0000000000000000 [ 115.548112] R10: 0000000000000007 R11: f000000000000000 R12: ffffffff9032f4f0 [ 115.552138] R13: ffff971228c8b1d8 R14: ffffffff90f8c860 R15: 0000000000000000 [ 115.556210] FS: 00007f041d2d0e40(0000) GS:ffff97123fd00000(0000) knlGS:0000000000000000 [ 115.561037] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 115.565256] CR2: 000055895cb3e4d8 CR3: 00000001c97dc000 CR4: 00000000000406e0 [ 115.568487] Kernel panic - not syncing: Fatal exception [ 115.572474] Kernel Offset: 0xe000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) Elapsed time: 120 To reproduce: # build kernel cd linux cp config-5.5.0-rc1-00011-g1c6c6a28e3cb2 .config make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 INSTALL_MOD_PATH= modules_install cd find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp qemu -k -m modules.cgz job-script # job-script is attached in this email Thanks, lkp