divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 20662 Comm: syz-executor.3 Not tainted 5.19.0-rc4-syzkaller-00219-g20855e4cb361 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:netem_enqueue+0x1474/0x3550 net/sched/sch_netem.c:516 Code: 74 1f 4c 89 44 24 20 89 44 24 18 89 4c 24 10 e8 32 98 44 fa 4c 8b 44 24 20 8b 44 24 18 8b 4c 24 10 48 8b 34 24 31 d2 2b 4e 74 f1 48 b8 00 00 00 00 00 fc ff df 48 01 d3 48 89 d9 48 c1 e9 03 RSP: 0018:ffffc90027bd7428 EFLAGS: 00010246 RAX: 000000008a117f81 RBX: ffff88805737384e RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff888021bdc640 RDI: ffff888021bdc6b4 RBP: ffff88801b386330 R08: ffff888021bdc718 R09: 0000000000000000 R10: 0000000000000200 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000040 R14: ffff88801b386000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802c900000(0063) knlGS:00000000f7fefb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f6f5b024 CR3: 0000000066b0c000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dev_qdisc_enqueue+0x40/0x300 net/core/dev.c:3785 __dev_xmit_skb net/core/dev.c:3874 [inline] __dev_queue_xmit+0x2093/0x3900 net/core/dev.c:4221 dev_queue_xmit include/linux/netdevice.h:2994 [inline] __bpf_tx_skb net/core/filter.c:2114 [inline] __bpf_redirect_no_mac net/core/filter.c:2139 [inline] __bpf_redirect+0x5fe/0xe40 net/core/filter.c:2162 ____bpf_clone_redirect net/core/filter.c:2429 [inline] bpf_clone_redirect+0x2ae/0x420 net/core/filter.c:2401 bpf_prog_d73238c32a702f9c+0x59/0x5e bpf_dispatcher_nop_func include/linux/bpf.h:869 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] bpf_test_run+0x386/0x9d0 net/bpf/test_run.c:402 bpf_prog_test_run_skb+0xb5e/0x1e10 net/bpf/test_run.c:1155 bpf_prog_test_run kernel/bpf/syscall.c:3591 [inline] __sys_bpf+0x15c1/0x5700 kernel/bpf/syscall.c:4935 __do_sys_bpf kernel/bpf/syscall.c:5021 [inline] __se_sys_bpf kernel/bpf/syscall.c:5019 [inline] __ia32_sys_bpf+0x74/0xc0 kernel/bpf/syscall.c:5019 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x53/0x62 RIP: 0023:0xf7ff4549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f7fef5cc EFLAGS: 00000296 ORIG_RAX: 0000000000000165 RAX: ffffffffffffffda RBX: 000000000000000a RCX: 0000000020000080 RDX: 0000000000000028 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:netem_enqueue+0x1474/0x3550 net/sched/sch_netem.c:516 Code: 74 1f 4c 89 44 24 20 89 44 24 18 89 4c 24 10 e8 32 98 44 fa 4c 8b 44 24 20 8b 44 24 18 8b 4c 24 10 48 8b 34 24 31 d2 2b 4e 74 f1 48 b8 00 00 00 00 00 fc ff df 48 01 d3 48 89 d9 48 c1 e9 03 RSP: 0018:ffffc90027bd7428 EFLAGS: 00010246 RAX: 000000008a117f81 RBX: ffff88805737384e RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff888021bdc640 RDI: ffff888021bdc6b4 RBP: ffff88801b386330 R08: ffff888021bdc718 R09: 0000000000000000 R10: 0000000000000200 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000040 R14: ffff88801b386000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802c900000(0063) knlGS:00000000f7fefb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f6f5b024 CR3: 0000000066b0c000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 74 1f je 0x21 2: 4c 89 44 24 20 mov %r8,0x20(%rsp) 7: 89 44 24 18 mov %eax,0x18(%rsp) b: 89 4c 24 10 mov %ecx,0x10(%rsp) f: e8 32 98 44 fa callq 0xfa449846 14: 4c 8b 44 24 20 mov 0x20(%rsp),%r8 19: 8b 44 24 18 mov 0x18(%rsp),%eax 1d: 8b 4c 24 10 mov 0x10(%rsp),%ecx 21: 48 8b 34 24 mov (%rsp),%rsi 25: 31 d2 xor %edx,%edx 27: 2b 4e 74 sub 0x74(%rsi),%ecx * 2a: f7 f1 div %ecx <-- trapping instruction 2c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 33: fc ff df 36: 48 01 d3 add %rdx,%rbx 39: 48 89 d9 mov %rbx,%rcx 3c: 48 c1 e9 03 shr $0x3,%rcx