I think this has been around for a while, but for some reason I'm running into it a lot today.
BUG: sleeping function called from invalid context at kernel/irq/manage.c:110 in_atomic(): 1, irqs_disabled(): 1, pid: 1839, name: modprobe no locks held by modprobe/1839. Preemption disabled at: [<ffffffff81b17163>] write_ext_msg+0x73/0x2d0 CPU: 0 PID: 1839 Comm: modprobe Not tainted 4.9.0-rc8-think+ #5 ffff880442287300 ffffffff81651e19 0000000080000001 0000000000000000 ffff88044221d380 000000000000006e ffff880442287338 ffffffff811117c3 ffff88044221d388 ffffffff8207b940 000000000000006e 0000000000000000 Call Trace: [<ffffffff81651e19>] dump_stack+0x6c/0x93 [<ffffffff811117c3>] ___might_sleep+0x193/0x210 [<ffffffff811118b1>] __might_sleep+0x71/0xe0 [<ffffffff811673d4>] ? __synchronize_hardirq+0x94/0xa0 [<ffffffff81167598>] synchronize_irq+0xa8/0x170 [<ffffffff811674f0>] ? set_irq_wake_real+0x90/0x90 [<ffffffff811674f5>] ? synchronize_irq+0x5/0x170 [<ffffffff81167b95>] ? disable_irq+0x5/0x30 [<ffffffff81167bb8>] disable_irq+0x28/0x30 [<ffffffff81b78654>] e1000_netpoll+0x1c4/0x200 [<ffffffff81b78490>] ? e1000_intr_msix_tx+0x190/0x190 [<ffffffff81d4fd40>] netpoll_poll_dev+0xa0/0x3b0 [<ffffffff811113c8>] ? preempt_count_sub+0x18/0xd0 [<ffffffff81d5025d>] netpoll_send_skb_on_dev+0x20d/0x3d0 [<ffffffff81d50955>] netpoll_send_udp+0x535/0x8c0 [<ffffffff81b17376>] write_ext_msg+0x286/0x2d0 [<ffffffff8168c71b>] ? check_preemption_disabled+0x3b/0x160 [<ffffffff81161d85>] call_console_drivers.isra.20.constprop.26+0x165/0x310 [<ffffffff811631b6>] console_unlock+0x3b6/0x840 [<ffffffff81163af5>] vprintk_emit+0x4b5/0x6e0 [<ffffffff81164058>] vprintk_default+0x48/0x80 [<ffffffff812b6e11>] printk+0xbc/0xe7 [<ffffffff812b6d55>] ? printk_lock.constprop.1+0x102/0x102 [<ffffffff812b6d5a>] ? printk+0x5/0xe7 [<ffffffffa0990001>] ? bt_init+0x1/0xfa [bluetooth] [<ffffffffa090fddd>] bt_info+0xdd/0x110 [bluetooth] [<ffffffffa090fd00>] ? bt_to_errno+0x50/0x50 [bluetooth] [<ffffffffa090fd05>] ? bt_info+0x5/0x110 [bluetooth] [<ffffffffa0990470>] sco_init+0xb0/0xc40 [bluetooth] [<ffffffffa0990000>] ? 0xffffffffa0990000 [<ffffffffa099009d>] bt_init+0x9d/0xfa [bluetooth] [<ffffffff81000639>] do_one_initcall+0x199/0x220 [<ffffffff810004a0>] ? initcall_blacklisted+0x170/0x170 [<ffffffff812b759f>] ? do_init_module+0xe3/0x2fd [<ffffffffa0990000>] ? 0xffffffffa0990000 [<ffffffff810004a5>] ? do_one_initcall+0x5/0x220 [<ffffffff8137063c>] ? __asan_register_globals+0x7c/0xa0 [<ffffffff812b75b0>] do_init_module+0xf4/0x2fd [<ffffffff811cae09>] load_module+0x3a79/0x4670 [<ffffffff811c4f00>] ? disable_ro_nx+0x80/0x80 [<ffffffff811c7390>] ? module_frob_arch_sections+0x20/0x20 [<ffffffff8123874a>] ? __buffer_unlock_commit+0x4a/0x90 [<ffffffff81239a9c>] ? trace_function+0x9c/0xc0 [<ffffffff81246dda>] ? function_trace_call+0xea/0x290 [<ffffffff811cbda1>] ? SYSC_finit_module+0x181/0x1c0 [<ffffffff811c7390>] ? module_frob_arch_sections+0x20/0x20 [<ffffffff813b4400>] ? get_user_arg_ptr.isra.26+0xa0/0xa0 [<ffffffff811c7395>] ? load_module+0x5/0x4670 [<ffffffff811cbda1>] SYSC_finit_module+0x181/0x1c0 [<ffffffff811cbc20>] ? SYSC_init_module+0x220/0x220 [<ffffffff81246dda>] ? function_trace_call+0xea/0x290 [<ffffffff811cbdf0>] ? SyS_init_module+0x10/0x10 [<ffffffff811cbdf0>] ? SyS_init_module+0x10/0x10 [<ffffffff811cbdf5>] ? SyS_finit_module+0x5/0x10 [<ffffffff8168c87c>] ? __this_cpu_preempt_check+0x1c/0x20 [<ffffffff811cbdf0>] ? SyS_init_module+0x10/0x10 [<ffffffff811cbdfe>] SyS_finit_module+0xe/0x10 [<ffffffff81003bc0>] do_syscall_64+0x100/0x2b0 [<ffffffff81f317cb>] entry_SYSCALL64_slow_path+0x25/0x25
