Public bug reported:
I'm getting a lot of CPU stuck error when writing on a CIFS (SMBv3)
mount and need to reboot the machine(s) every time it happens. This
error happens when I have a lot of small processes writing small files
to the mount.
The CIFS mount options are
sec=krb5,user=$USER,cruid=$UID,multiuser,nounix,mfsymlinks,resilienthandles,vers=3.0
I'm running
Description: Ubuntu 16.04.5 LTS
Release: 16.04
on kernel 4.15.0-45-generic #48~16.04.1-Ubuntu SMP Tue Jan 29 18:03:48
UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Trace is:
[ 5668.105623] CPU: 20 PID: 12828 Comm: action-suid Tainted: G D I L
4.15.0-45-generic #48~16.04.1-Ubuntu
[ 5668.105623] Hardware name: HP ProLiant DL360 G7, BIOS P68 08/16/2015
[ 5668.105626] RIP: 0010:native_queued_spin_lock_slowpath+0x118/0x1a0
[ 5668.105626] RSP: 0018:ffffaab55b5039b8 EFLAGS: 00000246 ORIG_RAX:
ffffffffffffff11
[ 5668.105628] RAX: 0000000000000000 RBX: ffff8f91fff5c358 RCX: ffff8f893bca3440
[ 5668.105629] RDX: ffff8f925f9a3440 RSI: 0000000000380101 RDI: ffff8f91fff5c3e0
[ 5668.105629] RBP: ffffaab55b5039b8 R08: 0000000000540000 R09: 0000000000000000
[ 5668.105631] R10: ffff8f92347fa000 R11: ffffffffc086d420 R12: ffff8f91fff5c3e0
[ 5668.105632] R13: ffff8f91fff5c2b0 R14: ffff8f91fff5c310 R15: ffffaab55b503a60
[ 5668.105633] FS: 00007ff936633700(0000) GS:ffff8f893bc80000(0000)
knlGS:0000000000000000
[ 5668.105634] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5668.105635] CR2: 00007f25bcfe3750 CR3: 00000008f5760003 CR4: 00000000000206e0
[ 5668.105636] Call Trace:
[ 5668.105638] _raw_spin_lock+0x20/0x30
[ 5668.105651] cifs_fattr_to_inode+0x7d/0x5a0 [cifs]
[ 5668.105663] cifs_get_inode_info+0x22e/0xcb0 [cifs]
[ 5668.105675] cifs_revalidate_dentry_attr+0x1d5/0x250 [cifs]
[ 5668.105687] cifs_revalidate_dentry+0x13/0x30 [cifs]
[ 5668.105697] cifs_d_revalidate+0x27/0xb0 [cifs]
[ 5668.105699] lookup_fast+0x270/0x300
[ 5668.105701] ? __inode_permission+0x5b/0x160
[ 5668.105702] walk_component+0x49/0x360
[ 5668.105704] ? path_init+0x1d9/0x310
[ 5668.105705] path_lookupat+0x76/0x230
[ 5668.105707] filename_lookup+0xb8/0x1a0
[ 5668.105709] ? __check_object_size+0xfc/0x1a0
[ 5668.105711] ? strncpy_from_user+0x4d/0x170
[ 5668.105713] user_path_at_empty+0x36/0x40
[ 5668.105714] ? user_path_at_empty+0x36/0x40
[ 5668.105715] vfs_statx+0x77/0xe0
[ 5668.105717] SYSC_newlstat+0x3d/0x70
[ 5668.105719] SyS_newlstat+0xe/0x10
[ 5668.105720] do_syscall_64+0x73/0x130
[ 5668.105722] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 5668.105723] RIP: 0033:0x7ff936143c85
[ 5668.105724] RSP: 002b:00007ffd8bacace8 EFLAGS: 00000246 ORIG_RAX:
0000000000000006
[ 5668.105725] RAX: ffffffffffffffda RBX: 000055f5e961e880 RCX: 00007ff936143c85
[ 5668.105726] RDX: 00007ffd8bacad30 RSI: 00007ffd8bacad30 RDI: 000055f5e961d880
[ 5668.105727] RBP: 00007ffd8bacadf0 R08: 31383130325f7374 R09: 7473616d5f383132
[ 5668.105728] R10: 65343237365f7265 R11: 0000000000000246 R12: 000055f5e961d880
[ 5668.105728] R13: 000055f5e961d8cd R14: 000055f5e961d846 R15: 000055f5e961d86d
[ 5668.105729] Code: 12 48 c1 ea 0c 83 e8 01 83 e2 30 48 98 48 81 c2 40 34 02
00 48 03 14 c5 c0 c6 3a 82 48 89 0a 8b 41 08 85 c0 75 09 f3 90 8b 41 08 <85> c0
7
4 f7 4c 8b 09 4d 85 c9 74 08 41 0f 18 09 eb 02 f3 90 8b
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.15.0-45-generic 4.15.0-45.48~16.04.1
ProcVersionSignature: User Name 4.15.0-45.48~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-45-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
Date: Wed Feb 20 13:56:05 2019
SourcePackage: linux-signed-hwe
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: linux-signed-hwe (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug uec-images xenial
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https://bugs.launchpad.net/bugs/1816838
Title:
Soft lockup - cpu stuck - cifs_fattr_to_inode
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