divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.125-syzkaller-00028-g73e6d86c30ee #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:genelink_tx_fixup+0x435/0x5f0 drivers/net/usb/gl620a.c:172 Code: 03 42 8a 04 20 84 c0 0f 85 e9 00 00 00 8b 2b 49 83 ed 80 4c 89 e8 48 c1 e8 03 42 8a 04 20 84 c0 0f 85 ed 00 00 00 89 e8 31 d2 <41> f7 75 00 89 d3 31 ff 89 d6 e8 9c 20 a1 fe 85 db 74 07 e8 f3 1c RSP: 0018:ffff8881f5e1efd0 EFLAGS: 00010246 RAX: 0000000000000062 RBX: ffff8881e9087570 RCX: ffff8881f5e13f00 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8881e9087570 RBP: 0000000000000062 R08: ffffffff82c43537 R09: 0000000000000003 R10: ffffed103ebc3e2d R11: 0000000000000004 R12: dffffc0000000000 R13: ffff8881eb4969c0 R14: 000000000000005a R15: ffff8881e9087500 FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000561aedc10368 CR3: 00000001b1078000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: usbnet_start_xmit+0x107/0x1a10 drivers/net/usb/usbnet.c:1363 __netdev_start_xmit include/linux/netdevice.h:4506 [inline] netdev_start_xmit include/linux/netdevice.h:4520 [inline] xmit_one+0xfa/0x470 net/core/dev.c:3203 dev_hard_start_xmit+0xac/0x1b0 net/core/dev.c:3219 sch_direct_xmit+0x28c/0x9e0 net/sched/sch_generic.c:336 qdisc_restart net/sched/sch_generic.c:401 [inline] __qdisc_run+0x245/0x420 net/sched/sch_generic.c:409 qdisc_run include/net/pkt_sched.h:121 [inline] __dev_xmit_skb net/core/dev.c:3395 [inline] __dev_queue_xmit+0xd2c/0x2e50 net/core/dev.c:3748 neigh_output include/net/neighbour.h:519 [inline] ip6_finish_output2+0xed9/0x15c0 net/ipv6/ip6_output.c:116 NF_HOOK_COND include/linux/netfilter.h:297 [inline] ip6_output+0x1c1/0x420 net/ipv6/ip6_output.c:214 dst_output include/net/dst.h:444 [inline] NF_HOOK include/linux/netfilter.h:308 [inline] mld_sendpack+0x606/0xb30 net/ipv6/mcast.c:1679 mld_send_cr net/ipv6/mcast.c:1975 [inline] mld_ifc_timer_expire+0x804/0xb30 net/ipv6/mcast.c:2474 call_timer_fn+0x30/0x330 kernel/time/timer.c:1416 expire_timers+0x214/0x410 kernel/time/timer.c:1461 __run_timers+0x603/0x740 kernel/time/timer.c:1785 run_timer_softirq+0x46/0x80 kernel/time/timer.c:1798 __do_softirq+0x23e/0x615 kernel/softirq.c:292 run_ksoftirqd+0x1f/0x30 kernel/softirq.c:603 smpboot_thread_fn+0x551/0x930 kernel/smpboot.c:165 kthread+0x30f/0x330 kernel/kthread.c:268 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace 0622518b2ebf2479 ]--- RIP: 0010:genelink_tx_fixup+0x435/0x5f0 drivers/net/usb/gl620a.c:172 Code: 03 42 8a 04 20 84 c0 0f 85 e9 00 00 00 8b 2b 49 83 ed 80 4c 89 e8 48 c1 e8 03 42 8a 04 20 84 c0 0f 85 ed 00 00 00 89 e8 31 d2 <41> f7 75 00 89 d3 31 ff 89 d6 e8 9c 20 a1 fe 85 db 74 07 e8 f3 1c RSP: 0018:ffff8881f5e1efd0 EFLAGS: 00010246 RAX: 0000000000000062 RBX: ffff8881e9087570 RCX: ffff8881f5e13f00 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8881e9087570 RBP: 0000000000000062 R08: ffffffff82c43537 R09: 0000000000000003 R10: ffffed103ebc3e2d R11: 0000000000000004 R12: dffffc0000000000 R13: ffff8881eb4969c0 R14: 000000000000005a R15: ffff8881e9087500 FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000561aedc10368 CR3: 00000001b1078000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 03 42 8a add -0x76(%rdx),%eax 3: 04 20 add $0x20,%al 5: 84 c0 test %al,%al 7: 0f 85 e9 00 00 00 jne 0xf6 d: 8b 2b mov (%rbx),%ebp f: 49 83 ed 80 sub $0xffffffffffffff80,%r13 13: 4c 89 e8 mov %r13,%rax 16: 48 c1 e8 03 shr $0x3,%rax 1a: 42 8a 04 20 mov (%rax,%r12,1),%al 1e: 84 c0 test %al,%al 20: 0f 85 ed 00 00 00 jne 0x113 26: 89 e8 mov %ebp,%eax 28: 31 d2 xor %edx,%edx * 2a: 41 f7 75 00 divl 0x0(%r13) <-- trapping instruction 2e: 89 d3 mov %edx,%ebx 30: 31 ff xor %edi,%edi 32: 89 d6 mov %edx,%esi 34: e8 9c 20 a1 fe callq 0xfea120d5 39: 85 db test %ebx,%ebx 3b: 74 07 je 0x44 3d: e8 .byte 0xe8 3e: f3 repz 3f: 1c .byte 0x1c