Code: e9 0e ec ff ff bf 01 00 00 00 e8 a8 6f 00 00 0f 1f 84 00 00 00 00 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18 RSP: 002b:00007ffce79b88f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f1468870d83 RDX: 000000000000000e RSI: 0000000020000100 RDI: 00000000000000c8 RBP: 00007ffce79b8920 R08: 0000000000000000 R09: 0000000000000001 R10: 00007ffce79b8697 R11: 0000000000000246 R12: 0000000000000003 R13: 00007ffce79b8940 R14: 00007ffce79b8930 R15: 00007ffce79b890c </TASK> general protection fault, probably for non-canonical address 0xdffffc000000000f: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000078-0x000000000000007f] CPU: 1 PID: 3640 Comm: syz-executor275 Not tainted 5.16.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:skb_clone+0x107/0x3c0 net/core/skbuff.c:1513 Code: 00 00 49 8b 5c 24 28 48 85 db 0f 85 ec 00 00 00 e8 8e 51 52 fa 4c 8d 7d 7e 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48 c1 ea 03 <0f> b6 04 02 4c 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 d3 01 00 00 RSP: 0018:ffffc9000280f508 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: ffffc9000280f610 RCX: 0000000000000000 RDX: 000000000000000f RSI: ffffffff87255962 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000140 R09: ffffffff8bccf573 R10: fffffbfff1799eae R11: 0000000000000000 R12: ffff888022029500 R13: 0000000000000a20 R14: ffff8880220295c8 R15: 000000000000007e FS: 0000555557459300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f14689102a4 CR3: 0000000018fc6000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> hsr_get_untagged_frame+0x4e/0x5a0 net/hsr/hsr_forward.c:164 hsr_forward_do net/hsr/hsr_forward.c:461 [inline] hsr_forward_skb+0xc05/0x1bf0 net/hsr/hsr_forward.c:620 hsr_handle_frame+0x565/0x790 net/hsr/hsr_slave.c:69 __netif_receive_skb_core+0x9e1/0x3770 net/core/dev.c:5359 __netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:5463 __netif_receive_skb+0x24/0x1b0 net/core/dev.c:5579 netif_receive_skb_internal net/core/dev.c:5665 [inline] netif_receive_skb+0x13e/0x8e0 net/core/dev.c:5724 tun_rx_batched.isra.0+0x460/0x720 drivers/net/tun.c:1465 tun_get_user+0x24d0/0x36d0 drivers/net/tun.c:1912 tun_chr_write_iter+0xdd/0x1a0 drivers/net/tun.c:1942 call_write_iter include/linux/fs.h:2162 [inline] new_sync_write+0x429/0x660 fs/read_write.c:503 vfs_write+0x7cd/0xae0 fs/read_write.c:590 ksys_write+0x12d/0x250 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f1468870d83 Code: e9 0e ec ff ff bf 01 00 00 00 e8 a8 6f 00 00 0f 1f 84 00 00 00 00 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18 RSP: 002b:00007ffce79b88f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f1468870d83 RDX: 000000000000000e RSI: 0000000020000100 RDI: 00000000000000c8 RBP: 00007ffce79b8920 R08: 0000000000000000 R09: 0000000000000001 R10: 00007ffce79b8697 R11: 0000000000000246 R12: 0000000000000003 R13: 00007ffce79b8940 R14: 00007ffce79b8930 R15: 00007ffce79b890c </TASK> Modules linked in: ---[ end trace fdda6f060eac7545 ]--- RIP: 0010:skb_clone+0x107/0x3c0 net/core/skbuff.c:1513 Code: 00 00 49 8b 5c 24 28 48 85 db 0f 85 ec 00 00 00 e8 8e 51 52 fa 4c 8d 7d 7e 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48 c1 ea 03 <0f> b6 04 02 4c 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 d3 01 00 00 RSP: 0018:ffffc9000280f508 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: ffffc9000280f610 RCX: 0000000000000000 RDX: 000000000000000f RSI: ffffffff87255962 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000140 R09: ffffffff8bccf573 R10: fffffbfff1799eae R11: 0000000000000000 R12: ffff888022029500 R13: 0000000000000a20 R14: ffff8880220295c8 R15: 000000000000007e FS: 0000555557459300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f14689102a4 CR3: 0000000018fc6000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: e9 0e ec ff ff jmpq 0xffffec13 5: bf 01 00 00 00 mov $0x1,%edi a: e8 a8 6f 00 00 callq 0x6fb7 f: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1) 16: 00 17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 1e: 00 1f: 85 c0 test %eax,%eax 21: 75 14 jne 0x37 23: b8 01 00 00 00 mov $0x1,%eax 28: 0f 05 syscall * 2a: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 55 ja 0x87 32: c3 retq 33: 0f 1f 40 00 nopl 0x0(%rax) 37: 48 83 ec 28 sub $0x28,%rsp 3b: 48 89 54 24 18 mov %rdx,0x18(%rsp)