Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.96' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 60.761194][ T6861] general protection fault, probably for non-canonical address 0xdffffc0000000104: 0000 [#1] PREEMPT SMP KASAN [ 60.773322][ T6861] KASAN: null-ptr-deref in range [0x0000000000000820-0x0000000000000827] [ 60.781738][ T6861] CPU: 0 PID: 6861 Comm: syz-executor039 Not tainted 5.8.0-rc4-next-20200713-syzkaller #0 [ 60.791865][ T6861] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.802024][ T6861] RIP: 0010:__xfrm6_tunnel_spi_lookup+0x22b/0x3b0 [ 60.808568][ T6861] Code: 89 e0 48 c1 e8 03 80 3c 28 00 0f 85 5b 01 00 00 4d 8b 24 24 4d 85 e4 74 53 e8 01 78 7b fa 49 8d 7c 24 20 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 2d 01 00 00 4d 8b 7c 24 20 49 8d 7c 24 28 48 89 [ 60.828508][ T6861] RSP: 0018:ffffc90003ba7580 EFLAGS: 00010202 [ 60.834582][ T6861] RAX: 0000000000000104 RBX: ffffffffffffffff RCX: ffffffff86f8b9b8 [ 60.842815][ T6861] RDX: ffff88809af14280 RSI: ffffffff86f8b96f RDI: 0000000000000820 [ 60.850790][ T6861] RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff88809af14b50 [ 60.859028][ T6861] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000800 [ 60.867158][ T6861] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 60.875266][ T6861] FS: 0000000000e27880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 60.884253][ T6861] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.890854][ T6861] CR2: 0000000020000180 CR3: 00000000942f4000 CR4: 00000000001506f0 [ 60.899113][ T6861] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.907330][ T6861] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.915397][ T6861] Call Trace: [ 60.918728][ T6861] xfrm6_tunnel_spi_lookup+0x8a/0x1d0 [ 60.924282][ T6861] ipcomp6_init_state+0x1de/0x700 [ 60.929368][ T6861] __xfrm_init_state+0x9a6/0x14b0 [ 60.934461][ T6861] xfrm_init_state+0x1a/0x70 [ 60.939058][ T6861] pfkey_add+0x1a10/0x2b70 [ 60.943560][ T6861] ? pfkey_get+0x700/0x700 [ 60.948026][ T6861] ? kfree_skbmem+0xef/0x1b0 [ 60.952622][ T6861] ? kfree_skb+0x7d/0x100 [ 60.957037][ T6861] ? pfkey_broadcast+0x3e1/0x630 [ 60.961977][ T6861] ? pfkey_get+0x700/0x700 [ 60.966399][ T6861] pfkey_process+0x66d/0x7a0 [ 60.971005][ T6861] ? pfkey_broadcast+0x630/0x630 [ 60.975949][ T6861] ? __mutex_lock+0x626/0x10d0 [ 60.980795][ T6861] ? _copy_from_iter_full+0x247/0x890 [ 60.986226][ T6861] ? __phys_addr+0x9a/0x110 [ 60.990891][ T6861] ? __phys_addr_symbol+0x2c/0x70 [ 60.995969][ T6861] ? __check_object_size+0x171/0x3e4 [ 61.001398][ T6861] pfkey_sendmsg+0x42d/0x800 [ 61.006137][ T6861] ? pfkey_send_new_mapping+0x11b0/0x11b0 [ 61.011910][ T6861] sock_sendmsg+0xcf/0x120 [ 61.016336][ T6861] ____sys_sendmsg+0x331/0x810 [ 61.021235][ T6861] ? kernel_sendmsg+0x50/0x50 [ 61.026071][ T6861] ? do_recvmmsg+0x6d0/0x6d0 [ 61.030675][ T6861] ? alloc_file_pseudo+0x165/0x250 [ 61.035794][ T6861] ? sock_alloc_file+0x4f/0x190 [ 61.040824][ T6861] ? __sys_socket+0x13d/0x200 [ 61.045510][ T6861] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 61.051679][ T6861] ? sock_alloc_file+0x4f/0x190 [ 61.056539][ T6861] ? __sys_socket+0x13d/0x200 [ 61.061308][ T6861] ? __x64_sys_socket+0x6f/0xb0 [ 61.066163][ T6861] ? do_syscall_64+0x60/0xe0 [ 61.070819][ T6861] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 61.076939][ T6861] ___sys_sendmsg+0xf3/0x170 [ 61.081542][ T6861] ? sendmsg_copy_msghdr+0x160/0x160 [ 61.086900][ T6861] ? find_held_lock+0x2d/0x110 [ 61.091745][ T6861] ? fs_reclaim_release+0x94/0xf0 [ 61.096844][ T6861] ? mark_lock+0xbc/0x1710 [ 61.101331][ T6861] ? lock_is_held_type+0xb0/0xe0 [ 61.106656][ T6861] ? __lock_acquire+0xc1e/0x56e0 [ 61.111710][ T6861] ? __fget_light+0x215/0x280 [ 61.116400][ T6861] __sys_sendmmsg+0x195/0x480 [ 61.121098][ T6861] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 61.126129][ T6861] ? find_held_lock+0x2d/0x110 [ 61.131209][ T6861] ? sockfd_lookup_light+0xc6/0x170 [ 61.136416][ T6861] ? __sys_sendmsg+0x10c/0x1b0 [ 61.141192][ T6861] ? __sys_sendmsg_sock+0xb0/0xb0 [ 61.146400][ T6861] ? __sys_socket+0x16d/0x200 [ 61.151173][ T6861] ? move_addr_to_kernel+0x70/0x70 [ 61.156290][ T6861] ? lock_is_held_type+0xb0/0xe0 [ 61.161414][ T6861] ? lock_is_held_type+0xb0/0xe0 [ 61.166359][ T6861] __x64_sys_sendmmsg+0x99/0x100 [ 61.171305][ T6861] ? lockdep_hardirqs_on+0x6a/0xe0 [ 61.176595][ T6861] do_syscall_64+0x60/0xe0 [ 61.181027][ T6861] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 61.187307][ T6861] RIP: 0033:0x4403c9 [ 61.191529][ T6861] Code: Bad RIP value. [ 61.195608][ T6861] RSP: 002b:00007ffcc337fb78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 61.204108][ T6861] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004403c9 [ 61.212534][ T6861] RDX: 0000000000000393 RSI: 0000000020000180 RDI: 0000000000000003 [ 61.220909][ T6861] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 61.229022][ T6861] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401bd0 [ 61.237629][ T6861] R13: 0000000000401c60 R14: 0000000000000000 R15: 0000000000000000 [ 61.245871][ T6861] Modules linked in: [ 61.250186][ T6861] ---[ end trace 1ee0aebd7e9e20d4 ]--- [ 61.255700][ T6861] RIP: 0010:__xfrm6_tunnel_spi_lookup+0x22b/0x3b0 [ 61.262408][ T6861] Code: 89 e0 48 c1 e8 03 80 3c 28 00 0f 85 5b 01 00 00 4d 8b 24 24 4d 85 e4 74 53 e8 01 78 7b fa 49 8d 7c 24 20 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 2d 01 00 00 4d 8b 7c 24 20 49 8d 7c 24 28 48 89 [ 61.282298][ T6861] RSP: 0018:ffffc90003ba7580 EFLAGS: 00010202 [ 61.288511][ T6861] RAX: 0000000000000104 RBX: ffffffffffffffff RCX: ffffffff86f8b9b8 [ 61.296563][ T6861] RDX: ffff88809af14280 RSI: ffffffff86f8b96f RDI: 0000000000000820 [ 61.304842][ T6861] RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff88809af14b50 [ 61.314309][ T6861] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000800 [ 61.322991][ T6861] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 61.331515][ T6861] FS: 0000000000e27880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 61.340877][ T6861] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.347480][ T6861] CR2: 0000000020000180 CR3: 00000000942f4000 CR4: 00000000001506f0 [ 61.356032][ T6861] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.364100][ T6861] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.372498][ T6861] Kernel panic - not syncing: Fatal exception in interrupt [ 61.381214][ T6861] Kernel Offset: disabled [ 61.385602][ T6861] Rebooting in 86400 seconds..