FYI, we noticed the following commit: commit: 39ef30648f4cfdc9d7d9225988eea1b20b4db51b ("lib: add linker tables test driver") https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git 20161117-linker-tables-v5-try3 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-x86_64 -enable-kvm -m 512M caused below changes: +-----------------------------------------------------------------------+------------+------------+ | | 6ca584f2c2 | 39ef30648f | +-----------------------------------------------------------------------+------------+------------+ | boot_successes | 2 | 0 | | boot_failures | 18 | 18 | | BUG:kernel_hang_in_test_stage | 18 | 16 | | WARNING:at_lib/test_linktables/test-linktables.c:#test_linktable_init | 0 | 16 | | BUG:unable_to_handle_kernel | 0 | 1 | | Oops | 0 | 1 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 2 | | general_protection_fault:#[##]PREEMPT_SMP | 0 | 1 | +-----------------------------------------------------------------------+------------+------------+ [ 4.779050] Key type encrypted registered [ 4.779649] test_linktables: expected: 0 test [ 4.780107] ------------[ cut here ]------------ [ 4.780607] WARNING: CPU: 0 PID: 1 at lib/test_linktables/test-linktables.c:744 test_linktable_init+0x137/0x1c1 [ 4.781797] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.9.0-rc5-next-20161117-00017-g39ef306 #101 [ 4.782706] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 [ 4.783581] Call Trace: [ 4.783834] dump_stack+0x61/0x7e [ 4.784172] __warn+0xb3/0xce [ 4.784479] ? set_debug_rodata+0x12/0x12 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, Xiaolong