Re: [PATCH 4.20 00/50] 4.20.9-stable review

From: Guenter Roeck
Date: Thu Feb 14 2019 - 16:02:33 EST

On Wed, Feb 13, 2019 at 07:38:05PM +0100, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 4.20.9 release.
> There are 50 patches in this series, all will be posted as a response
> to this one. If anyone has any issues with these being applied, please
> let me know.
> Responses should be made by Fri Feb 15 18:36:30 UTC 2019.
> Anything received after that time might be too late.

Build results:
total: 159 pass: 159 fail: 0
Qemu test results:
total: 343 pass: 330 fail: 13
Failed tests:

This failure gave me a bit of trouble. It is similar to the failure observed
earlier with v4.4.y, but changing the C compiler version did not help (I
tried 8.2.0 and 5.5.0), and changing the qemu version did not help either.
Bisect points to commit 31e8a058e1f ("Revert "ext4: use ext4_write_inode()
when fsyncing w/o a journal") as the culprit. No idea why that would be
the case, but I repeated the bisect twice with the same results, and
reverting that revert indeed fixes the problem. This is weird since
one of the failing tests doesn't even mount a file system but boots
from initrd. Go figure. Bisect results are below.


# bad: [f4a86d6d2a0bdead7cf98d552481367e6356ef28] Linux 4.20.9-rc1
# good: [0788acb1a3ed1589da1768ba64b1e5c76e8cb661] Linux 4.20.8
git bisect start 'HEAD' 'v4.20.8'
# good: [df6033ca3341635d8f529d6cdb6d37257df6f783] MIPS: OCTEON: don't set octeon_dma_bar_type if PCI is disabled
git bisect good df6033ca3341635d8f529d6cdb6d37257df6f783
# good: [da33f30a55d08758a63de90038344f956252ea8f] drm/rockchip: rgb: update SPDX license identifier
git bisect good da33f30a55d08758a63de90038344f956252ea8f
# good: [3ef454cd518997a8447080fb01743aaa4d4de8ae] xfrm: Make set-mark default behavior backward compatible
git bisect good 3ef454cd518997a8447080fb01743aaa4d4de8ae
# bad: [b442f17368f050887aae5d525b4dd0e146440f94] libceph: avoid KEEPALIVE_PENDING races in ceph_con_keepalive()
git bisect bad b442f17368f050887aae5d525b4dd0e146440f94
# bad: [31e8a058e1f9aa32254f64a9643853062141895a] Revert "ext4: use ext4_write_inode() when fsyncing w/o a journal"
git bisect bad 31e8a058e1f9aa32254f64a9643853062141895a
# good: [0bc4dd12c3196b01d2123f95bb1c949e5eebe483] drm/i915: Try to sanitize bogus DPLL state left over by broken SNB BIOSen
git bisect good 0bc4dd12c3196b01d2123f95bb1c949e5eebe483
# first bad commit: [31e8a058e1f9aa32254f64a9643853062141895a] Revert "ext4: use ext4_write_inode() when fsyncing w/o a journal"