[ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.34' (ECDSA) to the list of known hosts. syzkaller login: [ 68.008674][ T6993] IPVS: ftp: loaded support on port[0] = 21 [ 68.016320][ T6989] IPVS: ftp: loaded support on port[0] = 21 [ 68.022772][ T6995] IPVS: ftp: loaded support on port[0] = 21 [ 68.030207][ T6994] IPVS: ftp: loaded support on port[0] = 21 [ 68.040796][ T6996] IPVS: ftp: loaded support on port[0] = 21 [ 68.051950][ T6997] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program [ 68.363661][ T6989] BUG: kernel NULL pointer dereference, address: 0000000000000282 [ 68.363670][ T6989] #PF: supervisor write access in kernel mode [ 68.363676][ T6989] #PF: error_code(0x0002) - not-present page [ 68.363681][ T6989] PGD a8ba8067 P4D a8ba8067 PUD 9efed067 PMD 0 [ 68.363700][ T6989] Oops: 0002 [#1] PREEMPT SMP KASAN [ 68.363711][ T6989] CPU: 1 PID: 6989 Comm: syz-executor559 Not tainted 5.8.0-rc3-syzkaller #0 [ 68.363718][ T6989] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.363737][ T6989] RIP: 0010:__syscall_return_slowpath+0x26/0x280 [ 68.363748][ T6989] Code: 0b 0f 1f 00 41 55 65 48 8b 04 25 00 ff 01 00 41 54 55 53 48 83 3d d1 5f b4 08 00 48 8b 18 74 3f 48 89 fd 9c 58 0f 1f 44 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 68.363754][ T6989] RSP: 0018:ffffc90001a17f18 EFLAGS: 00010282 [ 68.363762][ T6989] RAX: 0000000000000282 RBX: 0000000000004000 RCX: 0000000000000000 [ 68.363769][ T6989] RDX: ffff888096504000 RSI: ffffffff8164312d RDI: ffffc90001a17f58 [ 68.363775][ T6989] RBP: ffffc90001a17f58 R08: 0000000000000000 R09: 0000000000000000 [ 68.363781][ T6989] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 [ 68.363787][ T6989] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 68.363796][ T6989] FS: 00000000023f1940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 68.363802][ T6989] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.363809][ T6989] CR2: 0000000000000282 CR3: 00000000947f6000 CR4: 00000000001406e0 [ 68.363818][ T6989] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.363824][ T6989] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.363827][ T6989] Call Trace: [ 68.363845][ T6989] do_syscall_64+0x6c/0xe0 [ 68.363858][ T6989] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 68.363866][ T6989] RIP: 0033:0x444850 [ 68.363869][ T6989] Code: Bad RIP value. [ 68.363875][ T6989] RSP: 002b:00007ffd268a03f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000023 [ 68.363884][ T6989] RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000444850 [ 68.363890][ T6989] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffd268a0400 [ 68.363896][ T6989] RBP: 0000000000010a9e R08: 0000000000000001 R09: 00000000023f1940 [ 68.363903][ T6989] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000403270 [ 68.363908][ T6989] R13: 0000000000403300 R14: 0000000000000000 R15: 0000000000000000 [ 68.363916][ T6989] Modules linked in: [ 68.363924][ T6989] CR2: 0000000000000282 [ 68.363936][ T6989] ---[ end trace 6ddbd6e78d30088d ]--- [ 68.363950][ T6989] RIP: 0010:__syscall_return_slowpath+0x26/0x280 [ 68.363960][ T6989] Code: 0b 0f 1f 00 41 55 65 48 8b 04 25 00 ff 01 00 41 54 55 53 48 83 3d d1 5f b4 08 00 48 8b 18 74 3f 48 89 fd 9c 58 0f 1f 44 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 68.363966][ T6989] RSP: 0018:ffffc90001a17f18 EFLAGS: 00010282 [ 68.364020][ T6989] RAX: 0000000000000282 RBX: 0000000000004000 RCX: 0000000000000000 [ 68.364027][ T6989] RDX: ffff888096504000 RSI: ffffffff8164312d RDI: ffffc90001a17f58 [ 68.364033][ T6989] RBP: ffffc90001a17f58 R08: 0000000000000000 R09: 0000000000000000 [ 68.364039][ T6989] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 [ 68.364045][ T6989] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 68.364054][ T6989] FS: 00000000023f1940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 68.364061][ T6989] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.364067][ T6989] CR2: 0000000000000282 CR3: 00000000947f6000 CR4: 00000000001406e0 [ 68.364076][ T6989] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.364083][ T6989] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.364089][ T6989] Kernel panic - not syncing: Fatal exception [ 68.365480][ T6989] Kernel Offset: disabled