Comment 2 for bug 1816838

Still happening on mainline kernel 4.20.11

Feb 22 16:31:12 imk-node01 kernel: [ 1465.018937] watchdog: BUG: soft lockup - CPU#23 stuck for 22s! [cp:31557]
Feb 22 16:31:12 imk-node01 kernel: [ 1465.018938] Modules linked in: overlay cmac nls_utf8 cifs ccm fscache ipmi_ssif intel_powerclamp coretemp kvm_intel kvm irqbypass gpio_ich acpi_power_meter intel_cstate hpilo ipmi_si i7core_edac ipmi_devintf ipmi_msghandler lpc_ich serio_raw mac_hid ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi sunrpc autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear radeon i2c_algo_bit ttm drm_kms_helper syscopyarea crct10dif_pclmul sysfillrect crc32_pclmul sysimgblt ghash_clmulni_intel fb_sys_fops drm drm_panel_orientation_quirks aesni_intel cfbfillrect cfbimgblt cfbcopyarea aes_x86_64 crypto_simd fb psmouse cryptd fbdev glue_helper hpsa i2c_core bnx2 scsi_transport_sas
Feb 22 16:31:12 imk-node01 kernel: [ 1465.018965] CPU: 23 PID: 31557 Comm: cp Tainted: G D I L 4.20.11-042011-generic #201902200535
Feb 22 16:31:12 imk-node01 kernel: [ 1465.018966] Hardware name: HP ProLiant DL360 G7, BIOS P68 08/16/2015
Feb 22 16:31:12 imk-node01 kernel: [ 1465.018969] RIP: 0010:native_queued_spin_lock_slowpath+0x60/0x1a0
Feb 22 16:31:12 imk-node01 kernel: [ 1465.018970] Code: 6e f0 0f ba 2f 08 0f 92 c0 0f b6 c0 c1 e0 08 89 c2 8b 07 30 e4 09 d0 a9 00 01 ff ff 75 48 85 c0 74 0e 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 5d 66 89 07 c3 8b 37 81 fe 00 01
Feb 22 16:31:12 imk-node01 kernel: [ 1465.018971] RSP: 0018:ffffab3356b439c8 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
Feb 22 16:31:12 imk-node01 kernel: [ 1465.018973] RAX: 0000000000540101 RBX: ffff9e173e960000 RCX: 000000000a12a9c6
Feb 22 16:31:12 imk-node01 kernel: [ 1465.018974] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff9e1a3334c840
Feb 22 16:31:12 imk-node01 kernel: [ 1465.018974] RBP: ffffab3356b439c8 R08: ffff9e2334ca5800 R09: ffff9e2334ca5100
Feb 22 16:31:12 imk-node01 kernel: [ 1465.018975] R10: ffffddca47d5e400 R11: ffffffffc0a25fc0 R12: ffff9e1a3334c840
Feb 22 16:31:12 imk-node01 kernel: [ 1465.018976] R13: 000000000a12a9c6 R14: ffff9e173e960000 R15: ffff9e1a35ef5300
Feb 22 16:31:12 imk-node01 kernel: [ 1465.018978] FS: 00007f6085222800(0000) GS:ffff9e233bac0000(0000) knlGS:0000000000000000
Feb 22 16:31:12 imk-node01 kernel: [ 1465.018978] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Feb 22 16:31:12 imk-node01 kernel: [ 1465.018979] CR2: 00007f60846fb6e0 CR3: 00000011f159a004 CR4: 00000000000206e0
Feb 22 16:31:12 imk-node01 kernel: [ 1465.018980] Call Trace:
Feb 22 16:31:12 imk-node01 kernel: [ 1465.018983] _raw_spin_lock+0x1f/0x30
Feb 22 16:31:12 imk-node01 kernel: [ 1465.018999] is_size_safe_to_change+0x3c/0xc0 [cifs]
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019013] cifs_fattr_to_inode+0x15e/0x5a0 [cifs]
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019027] cifs_get_inode_info+0x16d/0xb60 [cifs]
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019041] cifs_open+0x3a3/0x9f0 [cifs]
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019056] ? cifsFileInfo_get+0x40/0x40 [cifs]
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019057] do_dentry_open+0x138/0x360
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019070] ? cifsFileInfo_get+0x40/0x40 [cifs]
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019072] ? do_dentry_open+0x138/0x360
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019073] vfs_open+0x2d/0x30
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019075] path_openat+0x2d4/0x16d0
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019077] ? __check_object_size+0x166/0x192
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019079] ? strncpy_from_user+0x4f/0x180
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019080] do_filp_open+0x93/0x100
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019082] ? __alloc_fd+0x46/0x140
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019084] do_sys_open+0x184/0x210
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019086] __x64_sys_open+0x21/0x30
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019087] do_syscall_64+0x5a/0x110
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019089] entry_SYSCALL_64_after_hwframe+0x44/0xa9
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019090] RIP: 0033:0x7f6084708040
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019091] Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 09 27 2d 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 7e e0 01 00 48 89 04 24
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019092] RSP: 002b:00007ffee3776788 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019093] RAX: ffffffffffffffda RBX: 0000000000008000 RCX: 00007f6084708040
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019094] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffee37790b6
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019095] RBP: 00007ffee3776bb0 R08: 00007ffee3776d30 R09: 00007ffee3776d00
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019096] R10: 000000000000069d R11: 0000000000000246 R12: 00007f6085222601
Feb 22 16:31:12 imk-node01 kernel: [ 1465.019097] R13: 00007ffee3776d30 R14: 00007ffee37790b6 R15: 0000000000000000