divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 11553 Comm: syz-executor.4 Not tainted 5.19.0-rc5-syzkaller-00233-gb1c428b6c368 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 RIP: 0010:netem_enqueue+0x2592/0x3670 net/sched/sch_netem.c:516 Code: 24 70 4c 89 64 24 18 4d 8d 6c 24 74 4c 89 e9 48 c1 e9 03 42 8a 14 31 84 d2 48 8b 74 24 08 0f 85 9b 0a 00 00 41 2b 5d 00 31 d2 f3 49 01 d7 4c 89 f8 48 c1 e8 03 42 8a 04 30 84 c0 4d 89 f5 0f RSP: 0018:ffffc9000597f1e0 EFLAGS: 00010246 RAX: 00000000d2328c78 RBX: 0000000000000000 RCX: 1ffff11007a8c086 RDX: 0000000000000000 RSI: ffff888023ce8000 RDI: ffff88803d460430 RBP: ffffc9000597f310 R08: ffffffff84b404d2 R09: fffffbfff1fa9419 R10: fffffbfff1fa9419 R11: 1ffffffff1fa9418 R12: ffff88803d4603c0 R13: ffff88803d460434 R14: dffffc0000000000 R15: ffff888079d8444e FS: 00007ff92e418700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff92d39d090 CR3: 0000000078e4e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: netem_enqueue+0xf7e/0x3670 net/sched/sch_netem.c:483 dev_qdisc_enqueue net/core/dev.c:3785 [inline] __dev_xmit_skb net/core/dev.c:3874 [inline] __dev_queue_xmit+0xe20/0x38d0 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+0x707/0x1010 net/core/filter.c:2162 ____bpf_clone_redirect net/core/filter.c:2429 [inline] bpf_clone_redirect+0x243/0x350 net/core/filter.c:2401 bpf_prog_973cd02a7a0e8181+0x56/0x5b 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+0x4bc/0x8e0 net/bpf/test_run.c:402 bpf_prog_test_run_skb+0xad8/0x1380 net/bpf/test_run.c:1155 bpf_prog_test_run+0x32c/0x3a0 kernel/bpf/syscall.c:3591 __sys_bpf+0x43a/0x6c0 kernel/bpf/syscall.c:4935 __do_sys_bpf kernel/bpf/syscall.c:5021 [inline] __se_sys_bpf kernel/bpf/syscall.c:5019 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5019 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7ff92d289109 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff92e418168 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007ff92d39bf60 RCX: 00007ff92d289109 RDX: 000000000000002c RSI: 0000000020000080 RDI: 000000000000000a RBP: 00007ff92d2e305d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc0cda085f R14: 00007ff92e418300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:netem_enqueue+0x2592/0x3670 net/sched/sch_netem.c:516 Code: 24 70 4c 89 64 24 18 4d 8d 6c 24 74 4c 89 e9 48 c1 e9 03 42 8a 14 31 84 d2 48 8b 74 24 08 0f 85 9b 0a 00 00 41 2b 5d 00 31 d2 f3 49 01 d7 4c 89 f8 48 c1 e8 03 42 8a 04 30 84 c0 4d 89 f5 0f RSP: 0018:ffffc9000597f1e0 EFLAGS: 00010246 RAX: 00000000d2328c78 RBX: 0000000000000000 RCX: 1ffff11007a8c086 RDX: 0000000000000000 RSI: ffff888023ce8000 RDI: ffff88803d460430 RBP: ffffc9000597f310 R08: ffffffff84b404d2 R09: fffffbfff1fa9419 R10: fffffbfff1fa9419 R11: 1ffffffff1fa9418 R12: ffff88803d4603c0 R13: ffff88803d460434 R14: dffffc0000000000 R15: ffff888079d8444e FS: 00007ff92e418700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff92d39d090 CR3: 0000000078e4e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 24 70 and $0x70,%al 2: 4c 89 64 24 18 mov %r12,0x18(%rsp) 7: 4d 8d 6c 24 74 lea 0x74(%r12),%r13 c: 4c 89 e9 mov %r13,%rcx f: 48 c1 e9 03 shr $0x3,%rcx 13: 42 8a 14 31 mov (%rcx,%r14,1),%dl 17: 84 d2 test %dl,%dl 19: 48 8b 74 24 08 mov 0x8(%rsp),%rsi 1e: 0f 85 9b 0a 00 00 jne 0xabf 24: 41 2b 5d 00 sub 0x0(%r13),%ebx 28: 31 d2 xor %edx,%edx * 2a: f7 f3 div %ebx <-- trapping instruction 2c: 49 01 d7 add %rdx,%r15 2f: 4c 89 f8 mov %r15,%rax 32: 48 c1 e8 03 shr $0x3,%rax 36: 42 8a 04 30 mov (%rax,%r14,1),%al 3a: 84 c0 test %al,%al 3c: 4d 89 f5 mov %r14,%r13 3f: 0f .byte 0xf