FYI, we noticed the following commit: commit: d0963d6bc45a9da89a794150ecb172e20aee744d ("lib: add linker tables test driver") https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git 20161219-linker-tables-v5-try2 in testcase: trinity with following parameters: runtime: 300s test-description: Trinity is a linux system call fuzz tester. test-url: http://codemonkey.org.uk/projects/trinity/ on test machine: qemu-system-i386 -enable-kvm -m 320M caused below changes: +-----------------------------------------------------------------------+------------+------------+ | | a641ad5ea7 | d0963d6bc4 | +-----------------------------------------------------------------------+------------+------------+ | boot_successes | 8 | 0 | | boot_failures | 0 | 8 | | WARNING:at_lib/test_linktables/test-linktables.c:#test_linktable_init | 0 | 8 | +-----------------------------------------------------------------------+------------+------------+ [ 141.968545] Key type trusted registered [ 141.975421] test_linktables: expected: 0 test [ 141.981058] ------------[ cut here ]------------ [ 141.987049] WARNING: CPU: 0 PID: 1 at lib/test_linktables/test-linktables.c:760 test_linktable_init+0x19f/0x39a [ 142.001827] CPU: 0 PID: 1 Comm: swapper Not tainted 4.9.0-next-20161219-00014-gd0963d6 #1 [ 142.013015] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014 [ 142.026681] Call Trace: [ 142.030025] dump_stack+0x16/0x18 [ 142.034365] __warn+0xd1/0xf0 [ 142.038283] ? test_linktable_init+0x19f/0x39a To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email Thanks, Kernel Test Robot