@Christian, can you file you bug under a new bug report, the crash you
are seeing is in a totally different part of the kernel compared to the
initial bug report.
** Changed in: zfs-linux (Ubuntu Groovy)
Status: New => Invalid
** Changed in: zfs-linux (Ubuntu Focal)
Status: New =>
** Changed in: zfs-linux (Ubuntu Focal)
Status: Confirmed => Incomplete
** Changed in: zfs-linux (Ubuntu Focal)
Status: Incomplete => New
** Changed in: zfs-linux (Ubuntu Groovy)
Status: Confirmed => New
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Got the same just a sec ago:
---
apr 14 09:45:02 thecastles kernel: BUG: kernel NULL pointer dereference,
address:
apr 14 09:45:02 thecastles kernel: #PF: supervisor read access in kernel mode
apr 14 09:45:02 thecastles kernel: #PF: error_code(0x) - not-present page
apr 14
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: zfs-linux (Ubuntu Focal)
Status: New => Confirmed
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: zfs-linux (Ubuntu Groovy)
Status: New => Confirmed
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This bug was fixed in the package zfs-linux - 0.8.4-1ubuntu15
---
zfs-linux (0.8.4-1ubuntu15) hirsute; urgency=medium
* Fix null pointer dereference during zfs send (LP: #1900889)
- 4701-enable-ARC-FILL-LOCKED-flag.patch
-- Colin Ian King Fri, 27 Nov 2020 12:22:22
+
**
** Also affects: zfs-linux (Ubuntu Hirsute)
Importance: High
Assignee: Colin Ian King (colin-king)
Status: New
** Also affects: zfs-linux (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: zfs-linux (Ubuntu Groovy)
Importance: Undecided
Status:
Thanks for reporting back. I'll get this into the stable release updates
in a while.
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https://bugs.launchpad.net/bugs/1900889
Title:
BUG: kernel NULL pointer
@colin-king, it's been going well for the past month.
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https://bugs.launchpad.net/bugs/1900889
Title:
BUG: kernel NULL pointer dereference, address:
Thanks Simon. Lets let this soak test for a few more weeks and then I'll
SRU this fix.
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https://bugs.launchpad.net/bugs/1900889
Title:
BUG: kernel NULL pointer
FYI, still no problem with your package from the PPA. Thanks again
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https://bugs.launchpad.net/bugs/1900889
Title:
BUG: kernel NULL pointer dereference, address:
Indeed, I have no way of reproducing reliably, unfortunately. I've
installed the PPA your provided (thanks!):
# dmesg | grep ZFS
[ 18.284162] ZFS: Loaded module v0.8.3-1ubuntu12.5~lp1900889, ZFS pool
version 5000, ZFS filesystem version 5
So far, no problem to report and I'll let you know how
I think this may be a race condition, in which case duplicating this
issue and testing a fix may be problematic.
I've created a potential fix and tested this against our internal
regression tests, so it may be worth tying this to see if the issue
occurs with the fix.
To try this out do the
@Colin, if there's anything I can provide to you please let me know.
For what it's worth, rebooting the receiver side (Focal) allowed to
resume the send to completion.
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** Changed in: zfs-linux (Ubuntu)
Importance: Undecided => High
** Changed in: zfs-linux (Ubuntu)
Assignee: (unassigned) => Colin Ian King (colin-king)
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