divide error: 0000 [#1] SMP KASAN CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.0-rc5+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:transfer drivers/usb/gadget/udc/dummy_hcd.c:1426 [inline] RIP: 0010:dummy_timer+0xb0d/0x2fdb drivers/usb/gadget/udc/dummy_hcd.c:1950 Code: 0f 84 e6 fd ff ff e8 e2 70 ab fd 89 de 44 89 e7 e8 c8 71 ab fd 41 39 dc 0f 82 a6 08 00 00 e8 ca 70 ab fd 44 89 e0 31 d2 31 ff f3 89 d6 89 94 24 c0 00 00 00 e8 23 72 ab fd 8b 94 24 c0 00 00 RSP: 0018:ffff8881db209b20 EFLAGS: 00010046 RAX: 0000000000000003 RBX: 0000000000000000 RCX: ffffffff8392b468 RDX: 0000000000000000 RSI: ffffffff8392b476 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff86c2b200 R09: ffffed103b641353 R10: ffffed103b641352 R11: 0000000000000003 R12: 0000000000000003 R13: ffff8881d5089138 R14: dffffc0000000000 R15: ffff8881d901cb00 FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe7b041b000 CR3: 00000001c6549000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: call_timer_fn+0x179/0x650 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x5e3/0x1490 kernel/time/timer.c:1786 __do_softirq+0x221/0x912 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x178/0x1a0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x12f/0x500 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 RIP: 0010:default_idle+0x28/0x2e0 arch/x86/kernel/process.c:581 Code: 90 90 41 56 41 55 65 44 8b 2d 74 ee 91 7a 41 54 55 53 0f 1f 44 00 00 e8 26 ad d3 fb e9 07 00 00 00 0f 00 2d aa 93 52 00 fb f4 <65> 44 8b 2d 50 ee 91 7a 0f 1f 44 00 00 5b 5d 41 5c 41 5d 41 5e c3 RSP: 0018:ffffffff86c07da8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000007 RBX: ffffffff86c2b200 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000006 RDI: ffffffff86c2ba4c RBP: fffffbfff0d85640 R08: ffffffff86c2b200 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 cpuidle_idle_call kernel/sched/idle.c:154 [inline] do_idle+0x3b6/0x500 kernel/sched/idle.c:263 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:355 start_kernel+0x82a/0x864 init/main.c:784 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241 Modules linked in: ---[ end trace 9108efe26bbefb66 ]--- RIP: 0010:transfer drivers/usb/gadget/udc/dummy_hcd.c:1426 [inline] RIP: 0010:dummy_timer+0xb0d/0x2fdb drivers/usb/gadget/udc/dummy_hcd.c:1950 Code: 0f 84 e6 fd ff ff e8 e2 70 ab fd 89 de 44 89 e7 e8 c8 71 ab fd 41 39 dc 0f 82 a6 08 00 00 e8 ca 70 ab fd 44 89 e0 31 d2 31 ff f3 89 d6 89 94 24 c0 00 00 00 e8 23 72 ab fd 8b 94 24 c0 00 00 RSP: 0018:ffff8881db209b20 EFLAGS: 00010046 RAX: 0000000000000003 RBX: 0000000000000000 RCX: ffffffff8392b468 RDX: 0000000000000000 RSI: ffffffff8392b476 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff86c2b200 R09: ffffed103b641353 R10: ffffed103b641352 R11: 0000000000000003 R12: 0000000000000003 R13: ffff8881d5089138 R14: dffffc0000000000 R15: ffff8881d901cb00 FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe7b041b000 CR3: 00000001c6549000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400