Operation against btrfs on PowerPC in ubuntu_ltp_syscalls test will fail with ENOSPC on X

[Po-Hsu Lin]

This can be found on Xenial PPC:
 tst_fill_fs.c:49: INFO: write(): ENOSPC
 fallocate05.c:50: PASS: write() wrote 8192 bytes
 fallocate05.c:59: PASS: fallocate() on full FS: ENOSPC
 fallocate05.c:68: PASS: fallocate(FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE)
 fallocate05.c:74: PASS: write()
 tst_test.c:1169: INFO: Testing on btrfs
 tst_mkfs.c:90: INFO: Formatting /dev/loop0 with btrfs opts='' extra opts=''
 safe_macros.c:758: BROK: tst_test.c:757: mount(/dev/loop0, mntpoint, btrfs, 0, (nil)) failed: ENOSPC

With following tests:
fallocate04, fallocate05, fsetxattr01, fdatasync03, fgetxattr01, fremovexattr01, fremovexattr02, fsync01, fsync04, fanotify13, fanotify14, fanotify15, lremovexattr01, msync04, preadv03, preadv03_64, preadv203, preadv203_64, pwritev03, pwritev03_64, setxattr01, sync03, syncfs01, sync_file_range02, copy_file_range01

[Po-Hsu Lin (cypressyew)]

Similar bug could be found here bug 1783880

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1842270

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Thadeu Lima de Souza Cascardo (cascardo)]

I have a fix for ltp for that one, will send it out today.

[Po-Hsu Lin (cypressyew)]

This is affecting preadv203, preadv203_64 tests on Disco, issue found on node modoc:

 tst_test.c:1278: INFO: Testing on btrfs
 tst_mkfs.c:90: INFO: Formatting /dev/loop2 with btrfs opts='' extra opts=''
 tst_test.c:1217: INFO: Timeout per run is 0h 05m 00s
 safe_macros.c:452: BROK: preadv203.c:258: write(464,0x7fffca39ad78,18446744073709551615) failed: ENOSPC (28)