------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:2820! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 30741 Comm: syz-executor.4 Not tainted 5.11.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:skb_copy_and_csum_bits+0x704/0x7f0 net/core/skbuff.c:2820 Code: fa 48 63 c5 41 01 ee 49 01 c4 44 89 74 24 14 4c 89 64 24 08 e9 bc f9 ff ff e8 78 8f 81 fa 0f 0b e9 95 fe ff ff e8 6c 8f 81 fa <0f> 0b e8 05 6d c4 fa e9 14 fd ff ff 48 8b 7c 24 50 e8 f6 6c c4 fa RSP: 0018:ffffc90000db0190 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00000000000001e4 RCX: 0000000000000100 RDX: ffff88805ec48000 RSI: ffffffff86f13c64 RDI: 0000000000000003 RBP: 000000000000003c R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff86f13a49 R11: 0000000000000000 R12: ffff888079b77068 R13: ffff88807ddceac0 R14: 000000000000003c R15: 000000000000003c FS: 0000000001cef940(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000016b538d CR3: 00000000559e1000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: icmp_glue_bits+0x79/0x1f0 net/ipv4/icmp.c:356 __ip_append_data+0x169a/0x3260 net/ipv4/ip_output.c:1139 ip_append_data net/ipv4/ip_output.c:1322 [inline] ip_append_data+0x114/0x1a0 net/ipv4/ip_output.c:1301 icmp_push_reply+0x13b/0x4a0 net/ipv4/icmp.c:374 __icmp_send+0xb9b/0x1390 net/ipv4/icmp.c:762 icmp_send include/net/icmp.h:43 [inline] ip_fragment.constprop.0+0x1ea/0x240 net/ipv4/ip_output.c:587 __ip_finish_output net/ipv4/ip_output.c:306 [inline] __ip_finish_output+0x2de/0x640 net/ipv4/ip_output.c:290 ip_finish_output+0x35/0x200 net/ipv4/ip_output.c:318 NF_HOOK_COND include/linux/netfilter.h:290 [inline] ip_output+0x196/0x310 net/ipv4/ip_output.c:432 dst_output include/net/dst.h:441 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] __ip_queue_xmit+0x8e9/0x1a00 net/ipv4/ip_output.c:532 __tcp_transmit_skb+0x188c/0x38f0 net/ipv4/tcp_output.c:1405 tcp_transmit_skb net/ipv4/tcp_output.c:1423 [inline] __tcp_retransmit_skb+0x6b9/0x2b70 net/ipv4/tcp_output.c:3237 tcp_retransmit_skb+0x2a/0x360 net/ipv4/tcp_output.c:3260 tcp_retransmit_timer+0xf65/0x33a0 net/ipv4/tcp_timer.c:521 tcp_write_timer_handler+0x5bb/0xaf0 net/ipv4/tcp_timer.c:604 tcp_write_timer+0xa2/0x2b0 net/ipv4/tcp_timer.c:624 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1417 expire_timers kernel/time/timer.c:1462 [inline] __run_timers.part.0+0x67c/0xa50 kernel/time/timer.c:1731 __run_timers kernel/time/timer.c:1712 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1744 __do_softirq+0x2bc/0xa29 kernel/softirq.c:343 asm_call_irq_on_stack+0xf/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:226 [inline] __irq_exit_rcu kernel/softirq.c:420 [inline] irq_exit_rcu+0x134/0x200 kernel/softirq.c:432 sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628 RIP: 0010:rb_next+0x22/0x140 lib/rbtree.c:496 Code: ff ff 66 0f 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 41 55 48 c1 ea 03 41 54 55 48 89 fd 53 48 83 ec 08 80 3c 02 00 <0f> 85 0c 01 00 00 4c 8b 65 00 4c 39 e5 0f 84 bb 00 00 00 48 8d 7d RSP: 0018:ffffc9000116f998 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 1ffff1100dc47390 RSI: ffffffff81a75ece RDI: ffff88806e239c80 RBP: ffff88806e239c80 R08: 0000000000000000 R09: ffff88801f1d22d7 R10: ffffffff81a76050 R11: 0000000000000000 R12: ffff88806e239c60 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 validate_mm_rb+0x46/0x2d0 mm/mmap.c:381 vma_rb_insert mm/mmap.c:456 [inline] __vma_link_rb+0x553/0x710 mm/mmap.c:654 dup_mmap kernel/fork.c:588 [inline] dup_mm+0x7ec/0x1380 kernel/fork.c:1361 copy_mm kernel/fork.c:1417 [inline] copy_process+0x2a46/0x6fd0 kernel/fork.c:2099 kernel_clone+0xe7/0xab0 kernel/fork.c:2464 __do_sys_clone+0xc8/0x110 kernel/fork.c:2581 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45c7ea Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 0c 25 10 00 00 00 31 d2 4d 8d 91 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 f5 00 00 00 85 c0 41 89 c5 0f 85 fc 00 00 RSP: 002b:00007ffeb10ea4c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffeb10ea4c0 RCX: 000000000045c7ea RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffeb10ea500 R08: 0000000000000001 R09: 0000000001cef940 R10: 0000000001cefc10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 Modules linked in: ---[ end trace 9d4aa7054152e048 ]--- RIP: 0010:skb_copy_and_csum_bits+0x704/0x7f0 net/core/skbuff.c:2820 Code: fa 48 63 c5 41 01 ee 49 01 c4 44 89 74 24 14 4c 89 64 24 08 e9 bc f9 ff ff e8 78 8f 81 fa 0f 0b e9 95 fe ff ff e8 6c 8f 81 fa <0f> 0b e8 05 6d c4 fa e9 14 fd ff ff 48 8b 7c 24 50 e8 f6 6c c4 fa RSP: 0018:ffffc90000db0190 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00000000000001e4 RCX: 0000000000000100 RDX: ffff88805ec48000 RSI: ffffffff86f13c64 RDI: 0000000000000003 RBP: 000000000000003c R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff86f13a49 R11: 0000000000000000 R12: ffff888079b77068 R13: ffff88807ddceac0 R14: 000000000000003c R15: 000000000000003c FS: 0000000001cef940(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000016b538d CR3: 00000000559e1000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400