FYI, we noticed the below changes on commit 18eb74fa94161380c1acc9cf562cb835c4e54a25 ("params: cleanup sysfs allocation") +--------------------------------+------------+------------+ | | 6da0b56515 | 18eb74fa94 | +--------------------------------+------------+------------+ | boot_successes | 0 | 0 | | boot_failures | 25 | 22 | | BUG:kernel_boot_hang | 15 | | | BUG:kernel_test_crashed | 1 | | | BUG:kernel_boot_crashed | 9 | | | RIP:sysfs_add_file_mode_ns | 0 | 22 | | backtrace:sysfs_create_group | 0 | 22 | | backtrace:param_sysfs_init | 0 | 22 | | backtrace:kernel_init_freeable | 0 | 22 | +--------------------------------+------------+------------+ [ 4.780009] a401000000000000c05d4e82ffffffff0000000000000000401a0b81ffffffff [ 4.780014] i i u u u u u u i i i i i i i i u u u u u u u u i i i i i i i i [ 4.780015] ^ [ 4.780022] RIP: 0010:[<ffffffff811c1a04>] [<ffffffff811c1a04>] sysfs_add_file_mode_ns+0x64/0x1f0 [ 4.780022] RSP: 0000:ffff88006c0bbd78 EFLAGS: 00010246 [ 4.780023] RAX: 00000000000001a4 RBX: ffff88006c16c878 RCX: 0000000000001000 [ 4.780024] RDX: ffffffff81c24480 RSI: 0000000000000000 RDI: ffff88006c1a89a0 [ 4.780024] RBP: ffff88006c0bbdb8 R08: 0000000000000000 R09: 0000000000000000 [ 4.780025] R10: ffffffff81c24600 R11: 0000000000000000 R12: ffff88006c1a89a0 [ 4.780025] R13: 0000000000000000 R14: ffff88006c16c808 R15: ffff88006c1a0d68 [ 4.780026] FS: 0000000000000000(0000) GS:ffffffff8221e000(0000) knlGS:0000000000000000 [ 4.780027] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 4.780027] CR2: ffff88006c19ada0 CR3: 000000000220e000 CR4: 00000000000006b0 [ 4.780030] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 4.780030] DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 [ 4.780033] [<ffffffff811c2651>] internal_create_group+0xd1/0x280 [ 4.780034] [<ffffffff811c280e>] sysfs_create_group+0xe/0x10 [ 4.780038] [<ffffffff823d92ab>] param_sysfs_init+0x2a1/0x2d7 [ 4.780040] [<ffffffff823c5084>] do_one_initcall+0xe6/0x17b [ 4.780041] [<ffffffff823c5216>] kernel_init_freeable+0xfd/0x185 [ 4.780046] [<ffffffff81b6a9e9>] kernel_init+0x9/0xf0 [ 4.780048] [<ffffffff81b84cba>] ret_from_fork+0x7a/0xb0 [ 4.780049] [<ffffffffffffffff>] 0xffffffffffffffff [ 4.807586] kobject: 'kernel' (ffff88006c1a4340): fill_kobj_path: path = '/module/kernel' [ 4.809110] kobject: 'kernel' (ffff88006c1a4340): kobject_uevent_env Thanks, Huang, Ying _______________________________________________ LKP mailing list LKP(a)linux.intel.com