** Also affects: linux (Ubuntu Disco)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Cosmic)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Cosmic)
Status: New => Confirmed
** Changed in: linux (Ubuntu Disco)
Status: New => Confirmed
** Changed in: linux (Ubuntu Cosmic)
Importance: Undecided => High
** Changed in: linux (Ubuntu Disco)
Importance: Undecided => High
** Changed in: linux (Ubuntu Cosmic)
Assignee: (unassigned) => Guilherme G. Piccoli (gpiccoli)
** Changed in: linux (Ubuntu Disco)
Assignee: (unassigned) => Guilherme G. Piccoli (gpiccoli)
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1795659
Title:
kernel panic using CIFS share smb2_push_mandatory_locks
Status in linux package in Ubuntu:
Confirmed
Status in linux source package in Bionic:
Confirmed
Status in linux source package in Cosmic:
Confirmed
Status in linux source package in Disco:
Confirmed
Bug description:
Description: Ubuntu 16.04.5 LTS
Release: 16.04
Kernel: 4.15.0-36-generic #39~16.04.1-Ubuntu SMP Tue Sep 25 08:59:23
UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
Under load, getting a system crash when accessing files on an SMB3
share. dmesg from crash attached. I can upload the crash dump if
needed.
Share is mounted with the following options:
"ro,_netdev,username=*****,password=*****,domain=*****,vers=3.02,sec=ntlmsspi,nounix,noserverino,nobrl,cache=none"
Dmesg points to the cifs module
[ 2192.662345] BUG: unable to handle kernel NULL pointer dereference at
0000000000000038
[ 2192.662407] IP: smb2_push_mandatory_locks+0x10e/0x3b0 [cifs]
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