FYI, we noticed the following commit: commit: 6c6040ed28e11315e1eb5ea141bb9a89a9b3c3bf ("test: force linktable enable on all builds") https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git 20161130-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-x86_64 -enable-kvm -m 320M caused below changes: +-----------------------------------------------------------------------+------------+------------+ | | 9649308c1b | 6c6040ed28 | +-----------------------------------------------------------------------+------------+------------+ | boot_successes | 0 | 0 | | boot_failures | 8 | 8 | | BUG:sleeping_function_called_from_invalid_context_at_mm/page_alloc.c | 8 | 1 | | BUG:unable_to_handle_kernel | 0 | 7 | | Oops:#[##] | 0 | 7 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 7 | | WARNING:at_lib/test_linktables/test-linktables.c:#test_linktable_init | 0 | 1 | +-----------------------------------------------------------------------+------------+------------+ [ 1.474687] .................................... done. [ 1.475350] Using IPI Shortcut mode [ 1.476300] page_owner is disabled [ 1.477242] BUG: unable to handle kernel paging request at deadbf17 [ 1.478144] IP: kobject_get+0xa/0x70 [ 1.478623] *pde = 00000000 [ 1.479049] Oops: 0000 [#1] [ 1.479416] Modules linked in: [ 1.479853] CPU: 0 PID: 1 Comm: swapper Not tainted 4.9.0-rc7-next-20161130-00021-g6c6040e #1 [ 1.481004] task: 78026040 task.stack: 78028000 [ 1.481639] EIP: kobject_get+0xa/0x70 [ 1.482150] EFLAGS: 00210282 CPU: 0 [ 1.482620] EAX: deadbef7 EBX: deadbef7 ECX: 7a16df00 EDX: 87e31068 [ 1.483431] ESI: deadbeef EDI: 00000000 EBP: 78029e84 ESP: 78029e80 [ 1.484284] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 [ 1.485029] CR0: 80050033 CR2: deadbf17 CR3: 01767000 CR4: 00000690 [ 1.485891] Call Trace: [ 1.486226] device_add+0xd8/0x5e0 [ 1.486686] ? kvasprintf_const+0x49/0x60 [ 1.487207] ? kfree_const+0x16/0x20 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