Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.186' (ECDSA) to the list of known hosts. syzkaller login: [ 65.229828][ T6569] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 65.237677][ T6569] #PF: supervisor instruction fetch in kernel mode [ 65.244328][ T6569] #PF: error_code(0x0010) - not-present page [ 65.250281][ T6569] PGD 6f812067 P4D 6f812067 PUD 6fe2f067 PMD 0 [ 65.256598][ T6569] Oops: 0010 [#1] PREEMPT SMP KASAN [ 65.261785][ T6569] CPU: 1 PID: 6569 Comm: syz-executor133 Not tainted 5.14.0-rc6-next-20210817-syzkaller #0 [ 65.271771][ T6569] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.281815][ T6569] RIP: 0010:0x0 [ 65.285268][ T6569] Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. [ 65.292971][ T6569] RSP: 0018:ffffc90002dcfe38 EFLAGS: 00010246 [ 65.299037][ T6569] RAX: dffffc0000000000 RBX: ffffffff8d27cfa0 RCX: 0000000000000000 [ 65.306990][ T6569] RDX: 1ffffffff1a4fa0a RSI: ffffffff87d03085 RDI: ffff888077074d80 [ 65.314943][ T6569] RBP: ffff888077074d80 R08: 0000000000000000 R09: 0000000000000001 [ 65.322900][ T6569] R10: ffffffff87d03004 R11: 0000000000000001 R12: 0000000000000001 [ 65.330936][ T6569] R13: ffff888077075398 R14: ffff888077075b58 R15: ffff888077074e00 [ 65.338888][ T6569] FS: 0000000001747300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 65.347843][ T6569] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.354422][ T6569] CR2: ffffffffffffffd6 CR3: 000000006f93f000 CR4: 00000000001506e0 [ 65.362386][ T6569] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 65.370338][ T6569] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 65.378294][ T6569] Call Trace: [ 65.381556][ T6569] unix_shutdown+0x28a/0x5b0 [ 65.386138][ T6569] __sys_shutdown+0xf1/0x1b0 [ 65.390714][ T6569] ? __sys_shutdown_sock+0xa0/0xa0 [ 65.395805][ T6569] ? get_vtime_delta+0x26e/0x420 [ 65.400738][ T6569] __x64_sys_shutdown+0x50/0x70 [ 65.405586][ T6569] do_syscall_64+0x35/0xb0 [ 65.409990][ T6569] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 65.415923][ T6569] RIP: 0033:0x43ee29 executing program [ 65.419843][ T6569] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 65.439794][ T6569] RSP: 002b:00007ffdc0b3c908 EFLAGS: 00000246 ORIG_RAX: 0000000000000030 [ 65.448537][ T6569] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043ee29 [ 65.456507][ T6569] RDX: 00000000004ac018 RSI: 0000000000000000 RDI: 0000000000000003 [ 65.464492][ T6569] RBP: 0000000000402e10 R08: 0000000000000000 R09: 0000000000400488 [ 65.472473][ T6569] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402ea0 [ 65.480426][ T6569] R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488 [ 65.488472][ T6569] Modules linked in: [ 65.492344][ T6569] CR2: 0000000000000000 [ 65.496560][ T6569] ---[ end trace f541a02ac6ed69b5 ]--- [ 65.501989][ T6569] RIP: 0010:0x0 [ 65.505434][ T6569] Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. [ 65.513119][ T6569] RSP: 0018:ffffc90002dcfe38 EFLAGS: 00010246 [ 65.519165][ T6569] RAX: dffffc0000000000 RBX: ffffffff8d27cfa0 RCX: 0000000000000000 [ 65.527134][ T6569] RDX: 1ffffffff1a4fa0a RSI: ffffffff87d03085 RDI: ffff888077074d80 [ 65.535137][ T6569] RBP: ffff888077074d80 R08: 0000000000000000 R09: 0000000000000001 [ 65.543093][ T6569] R10: ffffffff87d03004 R11: 0000000000000001 R12: 0000000000000001 [ 65.551046][ T6569] R13: ffff888077075398 R14: ffff888077075b58 R15: ffff888077074e00 [ 65.559001][ T6569] FS: 0000000001747300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 65.567914][ T6569] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.574486][ T6569] CR2: ffffffffffffffd6 CR3: 000000006f93f000 CR4: 00000000001506e0 [ 65.582440][ T6569] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 65.590399][ T6569] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 65.598367][ T6569] Kernel panic - not syncing: Fatal exception [ 65.605679][ T6569] Kernel Offset: disabled [ 65.609992][ T6569] Rebooting in 86400 seconds..