================================================================== BUG: KMSAN: uninit-value in __hlist_del include/linux/list.h:749 [inline] BUG: KMSAN: uninit-value in detach_timer kernel/time/timer.c:811 [inline] BUG: KMSAN: uninit-value in expire_timers kernel/time/timer.c:1356 [inline] BUG: KMSAN: uninit-value in __run_timers+0xb99/0x11a0 kernel/time/timer.c:1685 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.2.0-rc4+ #10 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x191/0x1f0 lib/dump_stack.c:113 kmsan_report+0x162/0x2d0 mm/kmsan/kmsan_report.c:109 __msan_warning+0x75/0xe0 mm/kmsan/kmsan_instr.c:294 __hlist_del include/linux/list.h:749 [inline] detach_timer kernel/time/timer.c:811 [inline] expire_timers kernel/time/timer.c:1356 [inline] __run_timers+0xb99/0x11a0 kernel/time/timer.c:1685 run_timer_softirq+0x2d/0x50 kernel/time/timer.c:1698 __do_softirq+0x4ad/0x858 kernel/softirq.c:293 invoke_softirq kernel/softirq.c:375 [inline] irq_exit+0x238/0x290 kernel/softirq.c:416 exiting_irq+0xe/0x10 arch/x86/include/asm/apic.h:536 smp_apic_timer_interrupt+0x48/0x70 arch/x86/kernel/apic/apic.c:1070 apic_timer_interrupt+0x2e/0x40 arch/x86/entry/entry_64.S:813 </IRQ> RIP: 0010:default_idle+0x232/0x450 arch/x86/kernel/process.c:581 Code: 38 f3 8b 1d 00 c1 e0 01 48 c7 c7 f0 15 25 90 e8 f4 63 bc f3 83 38 00 0f 85 a4 01 00 00 85 db 7e 07 0f 00 2d f0 f7 5c 00 fb f4 <65> 8b 05 07 5c be 71 89 45 c4 8b 1d d6 d7 80 01 48 c7 c7 f8 2c c5 RSP: 0018:ffff8881280cfde0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff888217c3b5f0 RBX: 0000000000000000 RCX: ffff888000000000 RDX: ffff888207e345f0 RSI: 0000160000000000 RDI: 00000000000005f0 RBP: ffff8881280cfe20 R08: 00000000102515f0 R09: 0000778000000000 R10: ffffd0ffffffffff R11: 0000000000000004 R12: ffff88812d7e8990 R13: 0000000000000000 R14: ffff88812d7e8000 R15: ffff88812d7e8990 arch_cpu_idle+0x25/0x30 arch/x86/kernel/process.c:571 default_idle_call kernel/sched/idle.c:94 [inline] cpuidle_idle_call kernel/sched/idle.c:154 [inline] do_idle+0x1d7/0x790 kernel/sched/idle.c:263 cpu_startup_entry+0x45/0x50 kernel/sched/idle.c:354 start_secondary+0x3c0/0x4d0 arch/x86/kernel/smpboot.c:265 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243 Uninit was created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:200 [inline] kmsan_internal_poison_shadow+0x53/0xa0 mm/kmsan/kmsan.c:159 kmsan_kmalloc+0xa4/0x130 mm/kmsan/kmsan_hooks.c:178 kmsan_slab_alloc+0xe/0x10 mm/kmsan/kmsan_hooks.c:187 slab_post_alloc_hook mm/slab.h:442 [inline] slab_alloc_node mm/slub.c:2763 [inline] __kmalloc_node_track_caller+0xcba/0xf30 mm/slub.c:4390 __kmalloc_reserve net/core/skbuff.c:138 [inline] __alloc_skb+0x306/0xa10 net/core/skbuff.c:206 alloc_skb include/linux/skbuff.h:1055 [inline] alloc_uevent_skb+0x14c/0x470 lib/kobject_uevent.c:289 uevent_net_broadcast_untagged lib/kobject_uevent.c:325 [inline] kobject_uevent_net_broadcast lib/kobject_uevent.c:408 [inline] kobject_uevent_env+0x1b8d/0x27c0 lib/kobject_uevent.c:592 kobject_uevent+0x6f/0x80 lib/kobject_uevent.c:641 driver_bound+0x851/0x980 drivers/base/dd.c:355 really_probe+0x1991/0x1d90 drivers/base/dd.c:542 driver_probe_device+0x1ba/0x510 drivers/base/dd.c:670 __device_attach_driver+0x5b8/0x790 drivers/base/dd.c:777 bus_for_each_drv+0x28e/0x3b0 drivers/base/bus.c:454 __device_attach+0x489/0x750 drivers/base/dd.c:843 device_initial_probe+0x4a/0x60 drivers/base/dd.c:890 bus_probe_device+0x131/0x390 drivers/base/bus.c:514 device_add+0x25b5/0x2df0 drivers/base/core.c:2111 usb_new_device+0x23e5/0x2fb0 drivers/usb/core/hub.c:2534 hub_port_connect drivers/usb/core/hub.c:5089 [inline] hub_port_connect_change drivers/usb/core/hub.c:5204 [inline] port_event drivers/usb/core/hub.c:5350 [inline] hub_event+0x5853/0x7320 drivers/usb/core/hub.c:5432 process_one_work+0x1572/0x1f00 kernel/workqueue.c:2269 worker_thread+0x111b/0x2460 kernel/workqueue.c:2415 kthread+0x4b5/0x4f0 kernel/kthread.c:256 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:355 ==================================================================