fanotify09 case 3 (Events on files and dirs with both inode and mount marks) from ubuntu_ltp_syscalls failed

[Po-Hsu Lin]

This is a new test case added 7 days ago [1]

Test failed on Focal 5.4.0-29.33 with:
fanotify09.c:150: FAIL: group 1 got event: mask 10 pid=41059 fd=24 path=/tmp/ltp-sL4wPwoPJ3/AuNN9M/mntpoint
fanotify09.c:150: FAIL: group 2 got event: mask 10 pid=41059 fd=24 path=/tmp/ltp-sL4wPwoPJ3/AuNN9M/mntpoint

[1] https://github.com/linux-test-project/ltp/commit/70ca1e8806d227d47c6801262d3f7983652159a4#diff-234c27c769cf07468a81748a0e7330dd

[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 1876684

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.

[Po-Hsu Lin (cypressyew)]

This issue could be found on 5.0 kernel as well.

[Po-Hsu Lin (cypressyew)]

Test kernel for D/E/F https://people.canonical.com/~phlin/kernel/lp-1876684-fanotify09-3/

[Po-Hsu Lin (cypressyew)]

For D, backport needed as it's missing https://github.com/torvalds/linux/commit/0321e03cb4572fb3b56582bcb4927c1fe985b191

[Po-Hsu Lin (cypressyew)]

For B, WIP, it's missing https://github.com/torvalds/linux/commit/2d10b23082a7eb8be508b3789f2e7250a88a5ddb

[Po-Hsu Lin (cypressyew)]

Fix applied on Eoan via stable-update (bug 1881657)

Verified and passed.

[Po-Hsu Lin (cypressyew)]

Fix applied on Focal via stable-update (bug 1879759)

Verified and passed.

[Kelsey Steele (kelsey-steele)]

failed on Bionic/azure-4.15 : 4.15.0-1097.107 : amd64

[Po-Hsu Lin (cypressyew)]

Still visible on 4.15.0-1059.65 - oracle

[Kelsey Steele (kelsey-steele)]

Found on bionic/fips 4.15.0-1053.61

This time on test #2

8817. 02/04 17:51:59 DEBUG| utils:0153| [stdout] fanotify09.c:241: TINFO: Test #2: Events on non-dir child and parent with both parent and mount marks
8818. 02/04 17:51:59 DEBUG| utils:0153| [stdout] fanotify09.c:186: TPASS: group 0 got event: mask 2 pid=26632 fd=21 filename=/tmp/ltp-f6ORzS4Nub/tYfGRz/mntpoint/tfile_26632
8819. 02/04 17:51:59 DEBUG| utils:0153| [stdout] fanotify09.c:186: TPASS: group 0 got event: mask 10 pid=26632 fd=22 filename=/tmp/ltp-f6ORzS4Nub/tYfGRz/mntpoint
8820. 02/04 17:51:59 DEBUG| utils:0153| [stdout] fanotify09.c:216: TFAIL: group 1 got event: mask 10 (expected 0) pid=26632 fd=21 filename=
8821. 02/04 17:51:59 DEBUG| utils:0153| [stdout] fanotify09.c:216: TFAIL: group 2 got event: mask 10 (expected 0) pid=26632 fd=21 filename=

[Kleber Sacilotto de Souza (kleber-souza)]

Failed on xenial/linux-oracle: 4.15.0-1069.77~16.04.1 for sru-20210315

[Kleber Sacilotto de Souza (kleber-souza)]

Found with trusty/linux-azure 4.15.0-1114.127~14.04.1.

[Guilherme G. Piccoli (gpiccoli)]

Observed in T-4.15/Azure, cycle sru-20210531 .

[Krzysztof Kozlowski (krzk)]

Backport of 2d10b23082a7 ("fanotify: return only user requested event types in event mask") to bionic v4.15 is non trivial (dependency on at least 5b0457ad021f ("fsnotify: remove redundant arguments to handle_event()")). Better to simply hint the test.

[Guilherme G. Piccoli (gpiccoli)]

Observed in B/aws (kernel 4.15), cycle sru-20210621.

[Guilherme G. Piccoli (gpiccoli)]

Observed in B/aws-fips (kernel 4.15), cycle sru-20210621.

[Po-Hsu Lin (cypressyew)]

Found on T-azure-4.15.0-1124.137~14.04.1