[ OK ] Started OpenBSD Secure Shell server. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.192' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 47.548756][ T7061] ------------[ cut here ]------------ [ 47.548763][ T7061] kernel BUG at arch/x86/mm/physaddr.c:28! [ 47.548775][ T7061] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 47.548782][ T7061] CPU: 1 PID: 7061 Comm: syz-executor995 Not tainted 5.7.0-rc3-syzkaller #0 [ 47.548784][ T7061] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.548795][ T7061] RIP: 0010:__phys_addr+0x10e/0x120 [ 47.548800][ T7061] Code: 6b 89 80 e1 07 38 c1 0f 8c 75 ff ff ff 48 c7 c7 85 a3 6b 89 e8 f3 a8 7d 00 e9 64 ff ff ff e8 b9 c5 3f 00 0f 0b e8 b2 c5 3f 00 <0f> 0b e8 ab c5 3f 00 0f 0b 66 0f 1f 84 00 00 00 00 00 53 48 89 fb [ 47.548803][ T7061] RSP: 0018:ffffc900016579f8 EFLAGS: 00010093 [ 47.548807][ T7061] RAX: ffffffff81339bbe RBX: 0000000000000001 RCX: ffff88808dd5a340 [ 47.548810][ T7061] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 47.548813][ T7061] RBP: 00000000ffffffea R08: ffffffff81339b2c R09: ffffed1015d27074 [ 47.548815][ T7061] R10: ffffed1015d27074 R11: 0000000000000000 R12: ffffc900016c9000 [ 47.548818][ T7061] R13: dffffc0000000000 R14: 00004080016c9000 R15: ffffffff83fad568 [ 47.548822][ T7061] FS: 0000000001f5d880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 47.548825][ T7061] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.548828][ T7061] CR2: 000000000043e7d0 CR3: 0000000099a6c000 CR4: 00000000001406e0 [ 47.548833][ T7061] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.548836][ T7061] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.548837][ T7061] Call Trace: [ 47.548846][ T7061] kfree+0x60/0x220 [ 47.548854][ T7061] vc_do_resize+0x738/0x1ce0 [ 47.548864][ T7061] ? _raw_spin_unlock_irqrestore+0x6f/0xd0 [ 47.548869][ T7061] vt_ioctl+0x3178/0x3eb0 [ 47.548881][ T7061] ? rcu_lock_release+0x5/0x20 [ 47.548888][ T7061] ? tomoyo_path_number_perm+0x58f/0x690 [ 47.548897][ T7061] ? tty_jobctrl_ioctl+0x1e8/0xc20 [ 47.548902][ T7061] tty_ioctl+0xee4/0x15c0 [ 47.548910][ T7061] ? tty_do_resize+0x180/0x180 [ 47.548915][ T7061] __se_sys_ioctl+0xf9/0x160 [ 47.548922][ T7061] do_syscall_64+0xf3/0x1b0 [ 47.548927][ T7061] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 47.548931][ T7061] RIP: 0033:0x443f99 [ 47.548935][ T7061] 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 d8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 47.548938][ T7061] RSP: 002b:00007ffcf0b9f6f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 47.548942][ T7061] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443f99 [ 47.548945][ T7061] RDX: 0000000020000080 RSI: 000000000000560a RDI: 0000000000000004 [ 47.548948][ T7061] RBP: 00000000006ce018 R08: 000000000000000d R09: 00000000004002e0 [ 47.548950][ T7061] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401ca0 [ 47.548953][ T7061] R13: 0000000000401d30 R14: 0000000000000000 R15: 0000000000000000 [ 47.548958][ T7061] Modules linked in: [ 47.548967][ T7061] ---[ end trace 7662909635649ec0 ]--- [ 47.548973][ T7061] RIP: 0010:__phys_addr+0x10e/0x120 [ 47.548977][ T7061] Code: 6b 89 80 e1 07 38 c1 0f 8c 75 ff ff ff 48 c7 c7 85 a3 6b 89 e8 f3 a8 7d 00 e9 64 ff ff ff e8 b9 c5 3f 00 0f 0b e8 b2 c5 3f 00 <0f> 0b e8 ab c5 3f 00 0f 0b 66 0f 1f 84 00 00 00 00 00 53 48 89 fb [ 47.548979][ T7061] RSP: 0018:ffffc900016579f8 EFLAGS: 00010093 [ 47.548983][ T7061] RAX: ffffffff81339bbe RBX: 0000000000000001 RCX: ffff88808dd5a340 [ 47.548985][ T7061] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 47.548988][ T7061] RBP: 00000000ffffffea R08: ffffffff81339b2c R09: ffffed1015d27074 [ 47.548990][ T7061] R10: ffffed1015d27074 R11: 0000000000000000 R12: ffffc900016c9000 [ 47.548993][ T7061] R13: dffffc0000000000 R14: 00004080016c9000 R15: ffffffff83fad568 [ 47.548997][ T7061] FS: 0000000001f5d880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 47.549000][ T7061] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.549002][ T7061] CR2: 000000000043e7d0 CR3: 0000000099a6c000 CR4: 00000000001406e0 [ 47.549005][ T7061] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.549008][ T7061] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.549010][ T7061] Kernel panic - not syncing: Fatal exception [ 47.550249][ T7061] Kernel Offset: disabled [ 47.957940][ T7061] Rebooting in 86400 seconds..