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Subject[REGRESSION 4.11] Commit d8514d8edb5b ("ovl: copy up regular file using O_TMPFILE") breaks ubifs
Hi Amir

Commit d8514d8edb5b ("ovl: copy up regular file using O_TMPFILE")
breaks squashfs with an ubifs overlay (both ubi volumes of the same
container).

Renaming a file results in an error "UBIFS error (ubi0:1 pid 1394):
ubifs_add_orphan: orphaned twice". This corrupts the the filesystem and
the next attempt to mount the overlay will fail.

Regards
Ralph


Bisect log:

git bisect start
# bad: [c02ed2e75ef4c74e41e421acb4ef1494671585e8] Linux 4.11-rc4
git bisect bad c02ed2e75ef4c74e41e421acb4ef1494671585e8
# good: [c470abd4fde40ea6a0846a2beab642a578c0b8cd] Linux 4.10
git bisect good c470abd4fde40ea6a0846a2beab642a578c0b8cd
# good: [bc49a7831b1137ce1c2dda1c57e3631655f5d2ae] Merge branch 'akpm' (patches from Andrew)
git bisect good bc49a7831b1137ce1c2dda1c57e3631655f5d2ae
# good: [738bc38d49e017fe7acb3596712518e22c225816] kernel/ksysfs.c: add __ro_after_init to bin_attribute structure
git bisect good 738bc38d49e017fe7acb3596712518e22c225816
# good: [3f80dd67c367878aaad16e458eebc3c8980bb841] Merge tag 'acpi-extra-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
git bisect good 3f80dd67c367878aaad16e458eebc3c8980bb841
# bad: [4495c08e84729385774601b5146d51d9e5849f81] Linux 4.11-rc2
git bisect bad 4495c08e84729385774601b5146d51d9e5849f81
# bad: [2d62e0768d3c28536d4cfe4c40ba1e5e8e442a93] Merge tag 'kvm-4.11-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm
git bisect bad 2d62e0768d3c28536d4cfe4c40ba1e5e8e442a93
# good: [1827adb11ad26b2290dc9fe2aaf54976b2439865] Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good 1827adb11ad26b2290dc9fe2aaf54976b2439865
# bad: [0b94da8dfc26ec2eb3e6640726e434abf8c53e49] Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
git bisect bad 0b94da8dfc26ec2eb3e6640726e434abf8c53e49
# bad: [0a040b2113ec226bcf56fcbe02d035bb5b30c35e] Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6
git bisect bad 0a040b2113ec226bcf56fcbe02d035bb5b30c35e
# good: [590dce2d4934fb909b112cd80c80486362337744] Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
git bisect good 590dce2d4934fb909b112cd80c80486362337744
# bad: [4e66c42c60fdf9be81837857454a41b39bf1b773] Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
git bisect bad 4e66c42c60fdf9be81837857454a41b39bf1b773
# bad: [e593b2bf513dd4d3fbfa0f435392eea2c7f776f0] ovl: properly implement sync_filesystem()
git bisect bad e593b2bf513dd4d3fbfa0f435392eea2c7f776f0
# bad: [d8514d8edb5b045cf7f708e14f888ce760d60f0b] ovl: copy up regular file using O_TMPFILE
git bisect bad d8514d8edb5b045cf7f708e14f888ce760d60f0b
# good: [42f269b925405d9dd45014823e5057786d6ca452] ovl: rearrange code in ovl_copy_up_locked()
git bisect good 42f269b925405d9dd45014823e5057786d6ca452
# first bad commit: [d8514d8edb5b045cf7f708e14f888ce760d60f0b] ovl: copy up regular file using O_TMPFILE

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