Call trace from :

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.4 LTS"

Kernel :

4.15.0-1013-azure


[76244.156004] watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [nginx:1205]
[76244.156004] Modules linked in: binfmt_misc nf_conntrack_ipv4 nf_defrag_ipv4 xt_owner xt_conntrack nf_conntrack iptable_security xt_multiport iptable_filter ip_tables x_tables cmac arc4 md4 nls_utf8 cifsccm fscache kvm_intel kvm irqbypass serio_raw hv_balloon joydev 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 hid_generic crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel hid_hyperv aes_x86_64 crypto_simd glue_helper cryptd hyperv_keyboard hid hv_utils hv_netvsc hyperv_fb cfbfillrect cfbimgblt cfbcopyarea pata_acpi
[76244.156004] CPU: 1 PID: 1205 Comm: nginx Tainted: G      D      L   4.15.0-1013-azure #13~16.04.2-Ubuntu
[76244.156004] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS 090007  06/02/2017
[76244.156004] RIP: 0010:native_queued_spin_lock_slowpath+0x25/0x1a0
[76244.156004] RSP: 0000:ffffb99d82f6ba38 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff0c
[76244.156004] RAX: 0000000000000001 RBX: 0000000000000c18 RCX: 0000000000000c18
[76244.156004] RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff97cc526da038
[76244.156004] RBP: ffffb99d82f6ba38 R08: ffffb99d82f6bb10 R09: ffff97cc525fa880
[76244.156004] R10: ffff97cc526da000 R11: ffffffffc04980e0 R12: ffff97cc51e81e50
[76244.156004] R13: ffff97cc526da038 R14: ffff97cc51e81eb0 R15: ffffb99d82f6bb08
[76244.156004] FS:  00007f8afa582740(0000) GS:ffff97cc55640000(0000) knlGS:0000000000000000
[76244.156004] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[76244.156004] CR2: 00007fac3400a218 CR3: 00000002d13a0000 CR4: 00000000001406e0
[76244.156004] Call Trace:
[76244.156004]  _raw_spin_lock+0x20/0x30
[76244.156004]  is_size_safe_to_change+0x3c/0xd0 [cifs]
[76244.156004]  cifs_fattr_to_inode+0x14b/0x5a0 [cifs]
[76244.156004]  cifs_get_inode_info+0x215/0xa80 [cifs]
[76244.156004]  cifs_revalidate_dentry_attr+0x1d5/0x250 [cifs]
[76244.156004]  cifs_revalidate_dentry+0x13/0x30 [cifs]
[76244.156004]  cifs_d_revalidate+0x27/0xb0 [cifs]
[76244.156004]  lookup_fast+0x270/0x300
[76244.156004]  path_openat+0x183/0x13f0
[76244.156004]  ? touch_atime+0x36/0xe0
[76244.156004]  do_filp_open+0x99/0x110
[76244.156004]  ? __check_object_size+0xfc/0x1a0
[76244.156004]  ? path_get+0x27/0x30
[76244.156004]  ? __alloc_fd+0x46/0x170
[76244.156004]  do_sys_open+0x12d/0x290
[76244.156004]  ? do_sys_open+0x12d/0x290
[76244.156004]  ? task_work_run+0x38/0xb0
[76244.156004]  SyS_open+0x1e/0x20
[76244.156004]  do_syscall_64+0x73/0x130
[76244.156004]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[76244.156004] RIP: 0033:0x7f8af9f66c60
[76244.156004] RSP: 002b:00007ffc32e40df8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
[76244.156004] RAX: ffffffffffffffda RBX: 00007ffc32e410a0 RCX: 00007f8af9f66c60
[76244.156004] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 00005628da594c80
[76244.156004] RBP: 00005628da5856b0 R08: 0000000000000000 R09: 00005628da5856b0
[76244.156004] R10: 0000000061685475 R11: 0000000000000246 R12: 00007ffc32e41080
[76244.156004] R13: 00007ffc32e410a0 R14: 00007ffc32e410a0 R15: 00007ffc32e410a0
[76244.156004] Code: 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 0f 1f 44 00 00 ba 01 00 00 00 8b 07 85 c0 75 0a f0 0f b1 17 85 c0 75 f2 5d c3 f3 90 <eb> ec 81 fe 00 01 00 00 0f 84 92 00 00 00 41 b8 01 0100 00 b9
[76248.144004] watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [nginx:1203]
[76248.144004] Modules linked in: binfmt_misc nf_conntrack_ipv4 nf_defrag_ipv4 xt_owner xt_conntrack nf_conntrack iptable_security xt_multiport iptable_filter ip_tables x_tables cmac arc4 md4 nls_utf8 cifsccm fscache kvm_intel kvm irqbypass serio_raw hv_balloon joydev 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 hid_generic crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel hid_hyperv aes_x86_64 crypto_simd glue_helper cryptd hyperv_keyboard hid hv_utils hv_netvsc hyperv_fb cfbfillrect cfbimgblt cfbcopyarea pata_acpi
[76248.144004] CPU: 0 PID: 1203 Comm: nginx Tainted: G      D      L   4.15.0-1013-azure #13~16.04.2-Ubuntu
[76248.144004] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS 090007  06/02/2017
[76248.144004] RIP: 0010:native_queued_spin_lock_slowpath+0x25/0x1a0
[76248.144004] RSP: 0018:ffffb99d82f23d30 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff0c
[76248.144004] RAX: 0000000000000001 RBX: ffff97cc526da038 RCX: 0000000000000000
[76248.144004] RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff97cc526da038
[76248.144004] RBP: ffffb99d82f23d30 R08: 0000000000000000 R09: 0000000000000000
[76248.144004] R10: ffffb99d82f23e40 R11: ffff97cc4a825110 R12: ffff97cc51e81ef8
[76248.144004] R13: ffff97cc526da000 R14: ffff97cc5297eea4 R15: ffff97cc5297ee00
[76248.144004] FS:  00007f8afa582740(0000) GS:ffff97cc55600000(0000) knlGS:0000000000000000
[76248.144004] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[76248.144004] CR2: 00007fa816f9a6c0 CR3: 00000002d0c80000 CR4: 00000000001406f0
[76248.144004] Call Trace:
[76248.144004]  _raw_spin_lock+0x20/0x30
[76248.144004]  cifsFileInfo_put+0x8c/0x430 [cifs]
[76248.144004]  ? evict+0x139/0x1a0
[76248.144004]  ? iput+0x1d2/0x220
[76248.144004]  ? dentry_free+0x49/0x70
[76248.144004]  cifs_close+0x1e/0x40 [cifs]
[76248.144004]  ? cifs_close+0x1e/0x40 [cifs]
[76248.144004]  __fput+0xea/0x220
[76248.144004]  ____fput+0xe/0x10
[76248.144004]  task_work_run+0x8a/0xb0
[76248.144004]  do_exit+0x2de/0xb50
[76248.144004]  rewind_stack_do_exit+0x17/0x20
[76248.144004] RIP: 0033:0x7f8af9f66c60
[76248.144004] RSP: 002b:00007ffc32e40df8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
[76248.144004] RAX: ffffffffffffffda RBX: 00007ffc32e410a0 RCX: 00007f8af9f66c60
[76248.144004] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 00005628da594c80
[76248.144004] RBP: 00005628da5a4980 R08: 0000000000000000 R09: 00005628da5a4980
[76248.144004] R10: 0000000061685475 R11: 0000000000000246 R12: 00007ffc32e41080
[76248.144004] R13: 00007ffc32e410a0 R14: 00007ffc32e410a0 R15: 00007ffc32e410a0
[76248.144004] Code: 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 0f 1f 44 00 00 ba 01 00 00 00 8b 07 85 c0 75 0a f0 0f b1 17 85 c0 75 f2 5d c3 f3 90 <eb> ec 81 fe 00 01 00 00 0f 84 92 00 00 00 41 b8 01 0100 00 b9
[76272.156002] watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [nginx:1205]
[76272.156002] Modules linked in: binfmt_misc nf_conntrack_ipv4 nf_defrag_ipv4 xt_owner xt_conntrack nf_conntrack iptable_security xt_multiport iptable_filter ip_tables x_tables cmac arc4 md4 nls_utf8 cifsccm fscache kvm_intel kvm irqbypass serio_raw hv_balloon joydev 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 hid_generic crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel hid_hyperv aes_x86_64 crypto_simd glue_helper cryptd hyperv_keyboard hid hv_utils hv_netvsc hyperv_fb cfbfillrect cfbimgblt cfbcopyarea pata_acpi
[76272.156002] CPU: 1 PID: 1205 Comm: nginx Tainted: G      D      L   4.15.0-1013-azure #13~16.04.2-Ubuntu
[76272.156002] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS 090007  06/02/2017
[76272.156002] RIP: 0010:native_queued_spin_lock_slowpath+0x25/0x1a0
[76272.156002] RSP: 0000:ffffb99d82f6ba38 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff0c
[76272.156002] RAX: 0000000000000001 RBX: 0000000000000c18 RCX: 0000000000000c18
[76272.156002] RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff97cc526da038
[76272.156002] RBP: ffffb99d82f6ba38 R08: ffffb99d82f6bb10 R09: ffff97cc525fa880
[76272.156002] R10: ffff97cc526da000 R11: ffffffffc04980e0 R12: ffff97cc51e81e50
[76272.156002] R13: ffff97cc526da038 R14: ffff97cc51e81eb0 R15: ffffb99d82f6bb08
[76272.156002] FS:  00007f8afa582740(0000) GS:ffff97cc55640000(0000) knlGS:0000000000000000
[76272.156002] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[76272.156002] CR2: 00007fac3400a218 CR3: 00000002d13a0000 CR4: 00000000001406e0
[76272.156002] Call Trace:
[76272.156002]  _raw_spin_lock+0x20/0x30
[76272.156002]  is_size_safe_to_change+0x3c/0xd0 [cifs]
[76272.156002]  cifs_fattr_to_inode+0x14b/0x5a0 [cifs]
[76272.156002]  cifs_get_inode_info+0x215/0xa80 [cifs]
[76272.156002]  cifs_revalidate_dentry_attr+0x1d5/0x250 [cifs]
[76272.156002]  cifs_revalidate_dentry+0x13/0x30 [cifs]
[76272.156002]  cifs_d_revalidate+0x27/0xb0 [cifs]
[76272.156002]  lookup_fast+0x270/0x300
[76272.156002]  path_openat+0x183/0x13f0