Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 70.824621][ T27] kauditd_printk_skb: 7 callbacks suppressed [ 70.824636][ T27] audit: type=1400 audit(1575973139.178:41): avc: denied { map } for pid=9731 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.14' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 77.487508][ T27] audit: type=1400 audit(1575973145.848:42): avc: denied { map } for pid=9743 comm="syz-executor340" path="/root/syz-executor340854216" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 77.571456][ T9743] BUG: unable to handle page fault for address: 000000010000000e [ 77.571464][ T9743] #PF: supervisor write access in kernel mode [ 77.571471][ T9743] #PF: error_code(0x0002) - not-present page [ 77.571475][ T9743] PGD a44b9067 P4D a44b9067 PUD 0 [ 77.571495][ T9743] Oops: 0002 [#1] PREEMPT SMP KASAN [ 77.571506][ T9743] CPU: 1 PID: 9743 Comm: syz-executor340 Not tainted 5.5.0-rc1-syzkaller #0 [ 77.571512][ T9743] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.571531][ T9743] RIP: 0010:do_con_trol+0x47ea/0x61b0 [ 77.571542][ T9743] Code: 08 2c 01 0f 8e b1 00 00 00 4c 8b bd 08 ff ff ff 48 63 db 44 89 e9 41 0f b7 84 24 c8 03 00 00 48 01 db d1 e9 49 01 df 4c 89 ff 66 ab 49 8d bc 24 78 04 00 00 b8 ff ff 37 00 48 89 fa 48 c1 e0 [ 77.571548][ T9743] RSP: 0018:ffffc90001e6f8b0 EFLAGS: 00010202 [ 77.571556][ T9743] RAX: 0000000000000720 RBX: 0000000000000000 RCX: 0000000000000001 [ 77.571563][ T9743] RDX: 1ffff1101489ec79 RSI: ffffffff83e103ed RDI: 000000010000000e [ 77.571569][ T9743] RBP: ffffc90001e6f9d0 R08: ffff88809497c3c0 R09: ffff88809497cc50 [ 77.571577][ T9743] R10: fffffbfff14f3330 R11: ffffffff8a799987 R12: ffff8880a44f6000 [ 77.571584][ T9743] R13: 0000000000000002 R14: 0000000000000001 R15: 000000010000000e [ 77.571592][ T9743] FS: 0000000001732880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 77.571599][ T9743] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.571605][ T9743] CR2: 000000010000000e CR3: 000000009740e000 CR4: 00000000001406e0 [ 77.571616][ T9743] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.571622][ T9743] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.571626][ T9743] Call Trace: [ 77.571643][ T9743] ? reset_palette+0x190/0x190 [ 77.571656][ T9743] ? __kasan_check_read+0x11/0x20 [ 77.571689][ T9743] ? __atomic_notifier_call_chain+0xf8/0x1a0 [ 77.571706][ T9743] do_con_write.part.0+0xfd9/0x1ef0 [ 77.571726][ T9743] ? do_con_trol+0x61b0/0x61b0 [ 77.571740][ T9743] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 77.571751][ T9743] ? add_wait_queue+0x112/0x170 [ 77.571762][ T9743] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 77.571778][ T9743] ? trace_hardirqs_on+0x67/0x240 [ 77.571795][ T9743] con_write+0x46/0xd0 [ 77.571808][ T9743] n_tty_write+0x40e/0x1080 [ 77.571828][ T9743] ? n_tty_read+0x1bf0/0x1bf0 [ 77.571841][ T9743] ? prepare_to_wait_exclusive+0x320/0x320 [ 77.571855][ T9743] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 77.571865][ T9743] ? _copy_from_user+0x12c/0x1a0 [ 77.571876][ T9743] tty_write+0x496/0x7f0 [ 77.571887][ T9743] ? n_tty_read+0x1bf0/0x1bf0 [ 77.571900][ T9743] __vfs_write+0x8a/0x110 [ 77.571909][ T9743] ? put_tty_driver+0x20/0x20 [ 77.571919][ T9743] vfs_write+0x268/0x5d0 [ 77.571930][ T9743] ksys_write+0x14f/0x290 [ 77.571941][ T9743] ? __ia32_sys_read+0xb0/0xb0 [ 77.571954][ T9743] ? do_syscall_64+0x26/0x790 [ 77.571966][ T9743] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 77.571978][ T9743] ? do_syscall_64+0x26/0x790 [ 77.571993][ T9743] __x64_sys_write+0x73/0xb0 [ 77.572006][ T9743] do_syscall_64+0xfa/0x790 [ 77.572021][ T9743] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 77.572030][ T9743] RIP: 0033:0x4404f9 [ 77.572042][ T9743] 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 5b 14 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 77.572049][ T9743] RSP: 002b:00007fffbc322888 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 77.572060][ T9743] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004404f9 [ 77.572068][ T9743] RDX: 0000000000000078 RSI: 0000000020000200 RDI: 0000000000000004 [ 77.572075][ T9743] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 77.572083][ T9743] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401de0 [ 77.572090][ T9743] R13: 0000000000401e70 R14: 0000000000000000 R15: 0000000000000000 [ 77.572101][ T9743] Modules linked in: [ 77.572110][ T9743] CR2: 000000010000000e [ 77.572123][ T9743] ---[ end trace d54d966814bca7ad ]--- [ 77.572137][ T9743] RIP: 0010:do_con_trol+0x47ea/0x61b0 [ 77.572148][ T9743] Code: 08 2c 01 0f 8e b1 00 00 00 4c 8b bd 08 ff ff ff 48 63 db 44 89 e9 41 0f b7 84 24 c8 03 00 00 48 01 db d1 e9 49 01 df 4c 89 ff 66 ab 49 8d bc 24 78 04 00 00 b8 ff ff 37 00 48 89 fa 48 c1 e0 [ 77.572155][ T9743] RSP: 0018:ffffc90001e6f8b0 EFLAGS: 00010202 [ 77.572164][ T9743] RAX: 0000000000000720 RBX: 0000000000000000 RCX: 0000000000000001 [ 77.572172][ T9743] RDX: 1ffff1101489ec79 RSI: ffffffff83e103ed RDI: 000000010000000e [ 77.572180][ T9743] RBP: ffffc90001e6f9d0 R08: ffff88809497c3c0 R09: ffff88809497cc50 [ 77.572188][ T9743] R10: fffffbfff14f3330 R11: ffffffff8a799987 R12: ffff8880a44f6000 [ 77.572196][ T9743] R13: 0000000000000002 R14: 0000000000000001 R15: 000000010000000e [ 77.572207][ T9743] FS: 0000000001732880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 77.572215][ T9743] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.572223][ T9743] CR2: 000000010000000e CR3: 000000009740e000 CR4: 00000000001406e0 [ 77.572234][ T9743] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.572241][ T9743] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.572247][ T9743] Kernel panic - not syncing: Fatal exception [ 77.573070][ T9743] Kernel Offset: disabled [ 78.080192][ T9743] Rebooting in 86400 seconds..