Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.133' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 59.925505][ T0] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 59.925516][ T0] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 59.925529][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.8.0-rc4-syzkaller #0 [ 59.925537][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.925558][ T0] RIP: 0010:__switch_to_asm+0x0/0x40 [ 59.925572][ T0] Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 59.925579][ T0] RSP: 0018:ffffc90000d3fd00 EFLAGS: 00010046 [ 59.925590][ T0] RAX: dffffc0000000000 RBX: ffff8880ae735e18 RCX: 0000000000000000 [ 59.925598][ T0] RDX: 1ffff11015ce6bc2 RSI: ffff888096274480 RDI: ffff8880a9632340 [ 59.925606][ T0] RBP: ffffc90000d3fdd0 R08: 0000000000000001 R09: ffff8880a9632c08 [ 59.925613][ T0] R10: fffffbfff155cb61 R11: 0000000000000000 R12: ffff8880ae735e00 [ 59.925621][ T0] R13: ffff8880a9632340 R14: ffff888096274480 R15: ffff8880a9632770 [ 59.925632][ T0] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 59.925640][ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.925647][ T0] CR2: 0000000020000180 CR3: 00000000a868f000 CR4: 00000000001406e0 [ 59.925658][ T0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 59.925665][ T0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 59.925669][ T0] Call Trace: [ 59.925687][ T0] __schedule+0x8e1/0x1eb0 [ 59.925705][ T0] ? io_schedule_timeout+0x140/0x140 [ 59.925720][ T0] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.925732][ T0] ? trace_hardirqs_on+0x5f/0x220 [ 59.925747][ T0] ? lockdep_hardirqs_on+0x6a/0xe0 [ 59.925768][ T0] schedule_idle+0x53/0x90 [ 59.925781][ T0] do_idle+0x323/0x6d0 [ 59.925795][ T0] ? arch_cpu_idle_exit+0x70/0x70 [ 59.925811][ T0] cpu_startup_entry+0x14/0x20 [ 59.925826][ T0] start_secondary+0x2b3/0x370 [ 59.925840][ T0] ? set_cpu_sibling_map+0x1e80/0x1e80 [ 59.925856][ T0] secondary_startup_64+0xa4/0xb0 [ 59.925865][ T0] Modules linked in: [ 59.925880][ T0] ---[ end trace 296fc5b4b4021ddc ]--- [ 59.925894][ T0] RIP: 0010:__switch_to_asm+0x0/0x40 [ 59.925906][ T0] Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 59.925912][ T0] RSP: 0018:ffffc90000d3fd00 EFLAGS: 00010046 [ 59.925922][ T0] RAX: dffffc0000000000 RBX: ffff8880ae735e18 RCX: 0000000000000000 [ 59.925930][ T0] RDX: 1ffff11015ce6bc2 RSI: ffff888096274480 RDI: ffff8880a9632340 [ 59.925937][ T0] RBP: ffffc90000d3fdd0 R08: 0000000000000001 R09: ffff8880a9632c08 [ 59.925945][ T0] R10: fffffbfff155cb61 R11: 0000000000000000 R12: ffff8880ae735e00 [ 59.925953][ T0] R13: ffff8880a9632340 R14: ffff888096274480 R15: ffff8880a9632770 [ 59.925962][ T0] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 59.925970][ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.925978][ T0] CR2: 0000000020000180 CR3: 00000000a868f000 CR4: 00000000001406e0 [ 59.925987][ T0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 59.925994][ T0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 59.926000][ T0] Kernel panic - not syncing: Fatal exception [ 59.927482][ T0] Kernel Offset: disabled [ 60.277429][ T0] Rebooting in 86400 seconds..