A quick bisect shows this is the cause:
98618307e42790d8a980eb6423ff5b5ebae8db7d is the first bad commit
commit 98618307e42790d8a980eb6423ff5b5ebae8db7d
Author: Sargun Dhillon <[email protected]>
Date: Mon Dec 30 12:38:11 2019 -0800
selftests/seccomp: Catch garbage on SECCOMP_IOCTL_NOTIF_RECV
BugLink: https://bugs.launchpad.net/bugs/1860799
commit e4ab5ccc357b978999328fadae164e098c26fa40 upstream.
This adds logic to the user_notification_basic test to set a member
of struct seccomp_notif to an invalid value to ensure that the kernel
returns EINVAL if any of the struct seccomp_notif members are set to
invalid values.
Signed-off-by: Sargun Dhillon <[email protected]>
Suggested-by: Christian Brauner <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Fixes: 6a21cc50f0c7 ("seccomp: add a return code to trap to userspace")
Cc: [email protected]
Signed-off-by: Kees Cook <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Kamal Mostafa <[email protected]>
Signed-off-by: Khalid Elmously <[email protected]>
The test will pass with this patch reverted.
However as this patch ensures we have a correct return value EINVAL, so
it means this might be a kernel issue.
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https://bugs.launchpad.net/bugs/1862588
Title:
user_notification_basic in seccomp of ubuntu_kernel_selftest failed on
Bionic-5.0 Oracle
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