* [f2fs-dev] [Bug 205181] New: kernel panic when accessing btrfs root device with f2fs in kernel
@ 2019-10-13 13:13 bugzilla-daemon
2019-10-13 14:08 ` [f2fs-dev] [Bug 205181] " bugzilla-daemon
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: bugzilla-daemon @ 2019-10-13 13:13 UTC (permalink / raw)
To: linux-f2fs-devel
https://bugzilla.kernel.org/show_bug.cgi?id=205181
Bug ID: 205181
Summary: kernel panic when accessing btrfs root device with
f2fs in kernel
Product: File System
Version: 2.5
Kernel Version: 4.19.76-4.19.79
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: blocking
Priority: P1
Component: f2fs
Assignee: filesystem_f2fs@kernel-bugs.kernel.org
Reporter: rogan6710@gmail.com
Regression: No
This happens on kernel versions 4.19.76-4.19.79 on x86_64 (Slackware):
With support for btrfs, f2fs, ext*, xfs and a few others compiled in kernel it
panics when accessing a btrfs root device.
If support for f2fs is removed all works normally on 4.19.79, as does versions
before 4.19.76.
The problem has been verified on different machines by different users.
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* [f2fs-dev] [Bug 205181] kernel panic when accessing btrfs root device with f2fs in kernel
2019-10-13 13:13 [f2fs-dev] [Bug 205181] New: kernel panic when accessing btrfs root device with f2fs in kernel bugzilla-daemon
@ 2019-10-13 14:08 ` bugzilla-daemon
2019-10-13 15:49 ` bugzilla-daemon
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: bugzilla-daemon @ 2019-10-13 14:08 UTC (permalink / raw)
To: linux-f2fs-devel
https://bugzilla.kernel.org/show_bug.cgi?id=205181
--- Comment #1 from Roger (rogan6710@gmail.com) ---
Related linuxquestions.org thread:
https://www.linuxquestions.org/questions/slackware-14/the-latest-kernel-release-4175597503/page112.html
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* [f2fs-dev] [Bug 205181] kernel panic when accessing btrfs root device with f2fs in kernel
2019-10-13 13:13 [f2fs-dev] [Bug 205181] New: kernel panic when accessing btrfs root device with f2fs in kernel bugzilla-daemon
2019-10-13 14:08 ` [f2fs-dev] [Bug 205181] " bugzilla-daemon
@ 2019-10-13 15:49 ` bugzilla-daemon
2019-10-13 16:19 ` bugzilla-daemon
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: bugzilla-daemon @ 2019-10-13 15:49 UTC (permalink / raw)
To: linux-f2fs-devel
https://bugzilla.kernel.org/show_bug.cgi?id=205181
Andrew Macks (andypoo@gmail.com) changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |andypoo@gmail.com
--- Comment #2 from Andrew Macks (andypoo@gmail.com) ---
The issue is present in 4.14 longterm, 4.19 longterm and 5.2 stable EOL.
The cause is the following patch:
July 2: Original commit
10f966bbf521bb9b2e497bbca496a5141f4071d0
f2fs: use generic EFSBADCRC/EFSCORRUPTED
July 12: Merged into mainline with f2fs-for-5.3
July 28: Fix from Icenowy Zheng (read this for some background)
38fb6d0ea34299d97b031ed64fe994158b6f8eb3
f2fs: use EINVAL for superblock with invalid magic
July 30: Fix merged into mainline with f2fs-for-5.4-rc3 (note the typo in
branch name, this was actually for 5.3-rc3)
September 15: Kernel 5.3 was born so already contained the fix.
It was backported into the relevant branches below:
October 1: Original commit merged into 5.2.18
5.2.18 (5.2.19, 5.2.20, 5.2.21 EOL still affected)
c704eb3aaffae0d6463b1773b37e69695b112ca4
f2fs: use generic EFSBADCRC/EFSCORRUPTED
October 1: Original commit merged into 4.19.76
4.19.76 (4.19.77, 4.19.78, 4.19.79 still affected)
59a5cea41dd0ae706ab83f8ecd64199aadefb493
f2fs: use generic EFSBADCRC/EFSCORRUPTED
October 5: Original commit merged into 4.14.147
4.14.147 (4.14.148 and 4.14.149 still affected)
e991f02f6f9117514ed1374b39ce195013ab9cd0
f2fs: use generic EFSBADCRC/EFSCORRUPTED
...
Further notes:
* To date, 4.14, 4.19 and 5.2 all contain the issue.
* The f2fs development/stable kernel branches contain a fix (including their
4.14 and 4.19 branches), so the issue is not present there.
* Not quite sure why this commit was backported at all to longterm, but maybe I
am missing some behavioural change which warranted it. (To me, it seems like
this was long-standing functionality already).
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* [f2fs-dev] [Bug 205181] kernel panic when accessing btrfs root device with f2fs in kernel
2019-10-13 13:13 [f2fs-dev] [Bug 205181] New: kernel panic when accessing btrfs root device with f2fs in kernel bugzilla-daemon
2019-10-13 14:08 ` [f2fs-dev] [Bug 205181] " bugzilla-daemon
2019-10-13 15:49 ` bugzilla-daemon
@ 2019-10-13 16:19 ` bugzilla-daemon
2019-10-19 17:29 ` bugzilla-daemon
2019-10-31 18:14 ` bugzilla-daemon
4 siblings, 0 replies; 6+ messages in thread
From: bugzilla-daemon @ 2019-10-13 16:19 UTC (permalink / raw)
To: linux-f2fs-devel
https://bugzilla.kernel.org/show_bug.cgi?id=205181
--- Comment #3 from Roger (rogan6710@gmail.com) ---
Thanks for the reply.
This is a real mess for Slackware since we use "huge" kernels with support
for nearly every file system as default installation kernels. This particular
flavour often remain as system default as it gets upgraded. This is how it was
discovered, when someone upgraded his server with a btrfs root fs and a "huge"
kernel.
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* [f2fs-dev] [Bug 205181] kernel panic when accessing btrfs root device with f2fs in kernel
2019-10-13 13:13 [f2fs-dev] [Bug 205181] New: kernel panic when accessing btrfs root device with f2fs in kernel bugzilla-daemon
` (2 preceding siblings ...)
2019-10-13 16:19 ` bugzilla-daemon
@ 2019-10-19 17:29 ` bugzilla-daemon
2019-10-31 18:14 ` bugzilla-daemon
4 siblings, 0 replies; 6+ messages in thread
From: bugzilla-daemon @ 2019-10-19 17:29 UTC (permalink / raw)
To: linux-f2fs-devel
https://bugzilla.kernel.org/show_bug.cgi?id=205181
--- Comment #4 from Roger (rogan6710@gmail.com) ---
Thanks for the quick response
4.19.80 works just fine here :)
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* [f2fs-dev] [Bug 205181] kernel panic when accessing btrfs root device with f2fs in kernel
2019-10-13 13:13 [f2fs-dev] [Bug 205181] New: kernel panic when accessing btrfs root device with f2fs in kernel bugzilla-daemon
` (3 preceding siblings ...)
2019-10-19 17:29 ` bugzilla-daemon
@ 2019-10-31 18:14 ` bugzilla-daemon
4 siblings, 0 replies; 6+ messages in thread
From: bugzilla-daemon @ 2019-10-31 18:14 UTC (permalink / raw)
To: linux-f2fs-devel
https://bugzilla.kernel.org/show_bug.cgi?id=205181
--- Comment #5 from Andrew Macks (andypoo@gmail.com) ---
Confirmed that 4.19.80 is fine also. Sorry for the delayed reply.
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