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All:
I’m not sure this should go to LKML or here, but I’ll start here. After upgrading from Linux kernel 4.19.60 to 4.19.75 (or 76), I started running into kernel panics in the “ceph” module.
Based on the call trace, I believe I was able to narrow it down to the following commit in the Linux kernel 4.19 source tree:
commit 812810399999a673d30f9d04d38659030a28051a
Author: Yan, Zheng <zyan@xxxxxxxxxx>
Date: Sun Jun 2 09:45:38 2019 +0800
ceph: use ceph_evict_inode to cleanup inode's resource
[ Upstream commit 87bc5b895d94a0f40fe170d4cf5771c8e8f85d15 ]
remove_session_caps() relies on __wait_on_freeing_inode(), to wait for
freeing inode to remove its caps. But VFS wakes freeing inode waiters
before calling destroy_inode().
Signed-off-by: "Yan, Zheng" <zyan@xxxxxxxxxx>
Reviewed-by: Jeff Layton <jlayton@xxxxxxxxxx>
Signed-off-by: Ilya Dryomov <idryomov@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
Backing this patch out and recompiling my kernel has since resolved my issues (as far as I can tell thus far). The issue was fairly easy to create by simply creating and deleting files. I tested using ‘dd’ and was pretty consistently able to
reproduce the issue. Since the issue occurred in a VM, I do have a screenshot of the crashed machine and to avoid attaching an image, I’ll link to where they are: http://kvanals.kvanals.org/.ceph_kernel_panic_images/
Am I way off base or has anyone else run into this issue?
Thanks,
-- Kenneth Van Alstyne
Systems Architect
M: 228.547.8045 15052 Conference Center Dr, Chantilly, VA 20151
perspecta
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