Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 fd ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 cc fd ff ff 48 RSP: 002b:00007fcb6f2ac130 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fcb6fc59f80 RCX: 00007fcb6faeb24f RDX: 0000000000000036 RSI: 0000000020000640 RDI: 00000000000000c8 RBP: 00007fcb6f2ac1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000036 R11: 0000000000000293 R12: 0000000000000001 R13: 00007ffc675905ff R14: 00007fcb6f2ac300 R15: 0000000000022000 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: 7485 Comm: syz-executor.0 Not tainted 5.11.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 RIP: 0010:skb_clone+0xdf/0x300 net/core/skbuff.c:1488 Code: 02 00 0f 85 fd 01 00 00 48 8b 5b 28 48 85 db 0f 85 ab 00 00 00 4c 8d 75 7e 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <0f> b6 04 02 4c 89 f2 83 e2 07 38 d0 7f 08 84 c0 0f 85 44 01 00 00 RSP: 0018:ffffc90009927548 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: ffff88801a7a8680 RCX: 1ffff11003307d30 RDX: 000000000000000f RSI: 0000000000000a20 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000140 R09: ffffffff8a89a753 R10: fffffbfff15134ea R11: 6637303030302052 R12: 0000000000000a20 R13: dffffc0000000000 R14: 000000000000007e R15: ffff88801983e8c0 FS: 00007fcb6f2ac700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcb6f2abff8 CR3: 0000000029cd1000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hsr_forward_do net/hsr/hsr_forward.c:419 [inline] hsr_forward_skb+0xab2/0x1640 net/hsr/hsr_forward.c:568 hsr_handle_frame+0x4a0/0x5e0 net/hsr/hsr_slave.c:70 __netif_receive_skb_core+0x6b4/0x2e60 net/core/dev.c:5260 __netif_receive_skb_one_core+0xaa/0x180 net/core/dev.c:5363 netif_receive_skb_internal net/core/dev.c:5584 [inline] netif_receive_skb+0xf5/0x650 net/core/dev.c:5643 tun_rx_batched.isra.0+0x4b5/0x7c0 drivers/net/tun.c:1449 tun_get_user+0xe59/0x2f20 drivers/net/tun.c:1896 tun_chr_write_iter+0xbd/0x1a0 drivers/net/tun.c:1926 call_write_iter include/linux/fs.h:1901 [inline] new_sync_write+0x35d/0x5f0 fs/read_write.c:518 vfs_write+0x5c3/0x870 fs/read_write.c:605 ksys_write+0xf4/0x1d0 fs/read_write.c:658 do_syscall_64+0x2d/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fcb6faeb24f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 fd ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 cc fd ff ff 48 RSP: 002b:00007fcb6f2ac130 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fcb6fc59f80 RCX: 00007fcb6faeb24f RDX: 0000000000000036 RSI: 0000000020000640 RDI: 00000000000000c8 RBP: 00007fcb6f2ac1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000036 R11: 0000000000000293 R12: 0000000000000001 R13: 00007ffc675905ff R14: 00007fcb6f2ac300 R15: 0000000000022000 Modules linked in: ---[ end trace 574188a5320e0f5e ]--- RIP: 0010:skb_clone+0xdf/0x300 net/core/skbuff.c:1488 Code: 02 00 0f 85 fd 01 00 00 48 8b 5b 28 48 85 db 0f 85 ab 00 00 00 4c 8d 75 7e 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <0f> b6 04 02 4c 89 f2 83 e2 07 38 d0 7f 08 84 c0 0f 85 44 01 00 00 RSP: 0018:ffffc90009927548 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: ffff88801a7a8680 RCX: 1ffff11003307d30 RDX: 000000000000000f RSI: 0000000000000a20 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000140 R09: ffffffff8a89a753 R10: fffffbfff15134ea R11: 6637303030302052 R12: 0000000000000a20 R13: dffffc0000000000 R14: 000000000000007e R15: ffff88801983e8c0 FS: 00007fcb6f2ac700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcb6f2abff8 CR3: 0000000029cd1000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 89 54 24 18 mov %edx,0x18(%rsp) 4: 48 89 74 24 10 mov %rsi,0x10(%rsp) 9: 89 7c 24 08 mov %edi,0x8(%rsp) d: e8 99 fd ff ff callq 0xfffffdab 12: 48 8b 54 24 18 mov 0x18(%rsp),%rdx 17: 48 8b 74 24 10 mov 0x10(%rsp),%rsi 1c: 41 89 c0 mov %eax,%r8d 1f: 8b 7c 24 08 mov 0x8(%rsp),%edi 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 31 ja 0x63 32: 44 89 c7 mov %r8d,%edi 35: 48 89 44 24 08 mov %rax,0x8(%rsp) 3a: e8 cc fd ff ff callq 0xfffffe0b 3f: 48 rex.W