Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.32' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 59.344828][ T7053] IPVS: ftp: loaded support on port[0] = 21 [ 59.382929][ T7053] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 59.394665][ T7053] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 59.403079][ T7053] CPU: 1 PID: 7053 Comm: syz-executor549 Not tainted 5.7.0-rc2-syzkaller #0 [ 59.411929][ T7053] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.421984][ T7053] RIP: 0010:erspan_validate+0x89/0x380 [ 59.427429][ T7053] Code: c1 ea 03 80 3c 02 00 0f 85 c5 02 00 00 4c 8b a3 b0 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 04 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 9c 02 00 00 [ 59.447007][ T7053] RSP: 0018:ffffc900018a7188 EFLAGS: 00010247 [ 59.453052][ T7053] RAX: dffffc0000000000 RBX: ffff88809e875800 RCX: ffffffff86b260fc [ 59.460998][ T7053] RDX: 0000000000000000 RSI: ffffffff86b2610a RDI: 0000000000000004 [ 59.469393][ T7053] RBP: 0000000000000000 R08: ffff888094b78300 R09: ffffffff88e65d12 [ 59.477697][ T7053] R10: ffff88809e8758c7 R11: ffffed1013d0eb18 R12: 0000000000000000 [ 59.485653][ T7053] R13: ffffc900018a7888 R14: ffffc900018a7428 R15: dffffc0000000000 [ 59.493848][ T7053] FS: 0000000000d33880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 59.502852][ T7053] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.509434][ T7053] CR2: 0000000020000780 CR3: 00000000a6398000 CR4: 00000000001406e0 [ 59.517406][ T7053] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 59.525718][ T7053] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 59.533677][ T7053] Call Trace: [ 59.536969][ T7053] ? ipgre_tap_validate+0x240/0x240 [ 59.542145][ T7053] __rtnl_newlink+0x526/0x1590 [ 59.546887][ T7053] ? rtnl_link_unregister+0x240/0x240 [ 59.552245][ T7053] ? entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.558498][ T7053] ? is_bpf_text_address+0xcb/0x160 [ 59.563670][ T7053] ? kernel_text_address+0x6e/0xe0 [ 59.568765][ T7053] ? __kernel_text_address+0x9/0x30 [ 59.573950][ T7053] ? unwind_get_return_address+0x5a/0xa0 [ 59.579567][ T7053] ? profile_setup.cold+0xc1/0xc1 [ 59.584578][ T7053] ? arch_stack_walk+0x84/0xd0 [ 59.589332][ T7053] ? stack_trace_save+0x8c/0xc0 [ 59.594363][ T7053] ? stack_trace_consume_entry+0x160/0x160 [ 59.600161][ T7053] ? rtnl_newlink+0x46/0xa0 [ 59.604661][ T7053] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.610204][ T7053] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.616187][ T7053] ? __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 59.621981][ T7053] rtnl_newlink+0x64/0xa0 [ 59.626286][ T7053] ? __rtnl_newlink+0x1590/0x1590 [ 59.631282][ T7053] rtnetlink_rcv_msg+0x44e/0xad0 [ 59.636208][ T7053] ? rtnl_bridge_getlink+0x870/0x870 [ 59.641467][ T7053] ? lock_acquire+0x1f2/0x8f0 [ 59.646118][ T7053] ? netlink_deliver_tap+0x146/0xb50 [ 59.651479][ T7053] netlink_rcv_skb+0x15a/0x410 [ 59.656253][ T7053] ? rtnl_bridge_getlink+0x870/0x870 [ 59.661514][ T7053] ? netlink_ack+0xa10/0xa10 [ 59.666099][ T7053] netlink_unicast+0x537/0x740 [ 59.671012][ T7053] ? netlink_attachskb+0x810/0x810 [ 59.676099][ T7053] ? _copy_from_iter_full+0x25c/0x870 [ 59.681458][ T7053] ? __phys_addr_symbol+0x2c/0x70 [ 59.686458][ T7053] ? __check_object_size+0x171/0x437 [ 59.691714][ T7053] netlink_sendmsg+0x882/0xe10 [ 59.696451][ T7053] ? aa_af_perm+0x260/0x260 [ 59.700924][ T7053] ? netlink_unicast+0x740/0x740 [ 59.705852][ T7053] ? netlink_unicast+0x740/0x740 [ 59.710992][ T7053] sock_sendmsg+0xcf/0x120 [ 59.715451][ T7053] ____sys_sendmsg+0x6bf/0x7e0 [ 59.720198][ T7053] ? clear_bit+0x30/0x30 [ 59.724428][ T7053] ? kernel_sendmsg+0x50/0x50 [ 59.729089][ T7053] ? do_raw_spin_unlock+0x171/0x260 [ 59.734265][ T7053] ? _raw_spin_unlock+0x24/0x40 [ 59.739103][ T7053] ? do_huge_pmd_wp_page+0x50e/0x2140 [ 59.744486][ T7053] ___sys_sendmsg+0x100/0x170 [ 59.749150][ T7053] ? sendmsg_copy_msghdr+0x70/0x70 [ 59.754497][ T7053] ? pmd_val+0x7c/0xf0 [ 59.758538][ T7053] ? fault_around_bytes_set+0x90/0x90 [ 59.764057][ T7053] ? find_held_lock+0x2d/0x110 [ 59.768792][ T7053] ? do_page_fault+0x59e/0x13da [ 59.773637][ T7053] ? vm_insert_pages+0x6a0/0x6a0 [ 59.778563][ T7053] ? lock_downgrade+0x840/0x840 [ 59.783421][ T7053] ? __fget_light+0x1ab/0x270 [ 59.788080][ T7053] __sys_sendmsg+0xec/0x1b0 [ 59.792555][ T7053] ? __sys_sendmsg_sock+0xb0/0xb0 [ 59.797553][ T7053] ? down_read_nested+0x420/0x420 [ 59.802551][ T7053] ? trace_hardirqs_off_caller+0x55/0x230 [ 59.808442][ T7053] ? do_syscall_64+0x21/0x7d0 [ 59.813097][ T7053] do_syscall_64+0xf6/0x7d0 [ 59.817608][ T7053] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.823473][ T7053] RIP: 0033:0x440bc9 [ 59.827386][ T7053] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 7b 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 59.847227][ T7053] RSP: 002b:00007fff8f61dd18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 59.855830][ T7053] RAX: ffffffffffffffda RBX: 00000000004a2370 RCX: 0000000000440bc9 [ 59.863779][ T7053] RDX: 0000000000000000 RSI: 0000000020000780 RDI: 0000000000000003 [ 59.871744][ T7053] RBP: 00007fff8f61dd20 R08: 0000000120080522 R09: 0000000120080522 [ 59.879689][ T7053] R10: 0000000120080522 R11: 0000000000000246 R12: 00000000004a2370 [ 59.887634][ T7053] R13: 0000000000402160 R14: 0000000000000000 R15: 0000000000000000 [ 59.895668][ T7053] Modules linked in: [ 59.900285][ T7053] ---[ end trace e1a52bdbfee4b61b ]--- [ 59.906388][ T7053] RIP: 0010:erspan_validate+0x89/0x380 [ 59.911866][ T7053] Code: c1 ea 03 80 3c 02 00 0f 85 c5 02 00 00 4c 8b a3 b0 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 04 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 9c 02 00 00 [ 59.933211][ T7053] RSP: 0018:ffffc900018a7188 EFLAGS: 00010247 [ 59.939369][ T7053] RAX: dffffc0000000000 RBX: ffff88809e875800 RCX: ffffffff86b260fc [ 59.947532][ T7053] RDX: 0000000000000000 RSI: ffffffff86b2610a RDI: 0000000000000004 [ 59.955897][ T7053] RBP: 0000000000000000 R08: ffff888094b78300 R09: ffffffff88e65d12 [ 59.963933][ T7053] R10: ffff88809e8758c7 R11: ffffed1013d0eb18 R12: 0000000000000000 [ 59.971912][ T7053] R13: ffffc900018a7888 R14: ffffc900018a7428 R15: dffffc0000000000 [ 59.979910][ T7053] FS: 0000000000d33880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 59.988898][ T7053] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.995513][ T7053] CR2: 0000000020000780 CR3: 00000000a6398000 CR4: 00000000001406e0 [ 60.003802][ T7053] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.011808][ T7053] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.019857][ T7053] Kernel panic - not syncing: Fatal exception [ 60.027449][ T7053] Kernel Offset: disabled [ 60.031927][ T7053] Rebooting in 86400 seconds..