Starting System Logging Service... [ OK ] Started Regular background program processing daemon. Starting Permit User Sessions... [ OK ] Started Daily apt upgrade and clean activities. [ OK ] Reached target Timers. [ OK ] Started System Logging Service. [ OK ] Found device /dev/ttyS0. [ OK ] Started Permit User Sessions. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.217' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 66.287793][ T27] audit: type=1400 audit(1594484581.216:8): avc: denied { execmem } for pid=6814 comm="syz-executor785" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 66.309836][ T5] ------------[ cut here ]------------ [ 66.315891][ T5] WARNING: CPU: 0 PID: 5 at fs/read_write.c:427 __kernel_read+0x41d/0x4d0 [ 66.324469][ T5] Kernel panic - not syncing: panic_on_warn set ... [ 66.331051][ T5] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.8.0-rc4-syzkaller #0 [ 66.339087][ T5] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.349130][ T5] Workqueue: events p9_read_work [ 66.354058][ T5] Call Trace: [ 66.357326][ T5] dump_stack+0x18f/0x20d [ 66.361655][ T5] panic+0x2e3/0x75c [ 66.366483][ T5] ? __warn_printk+0xf3/0xf3 [ 66.371053][ T5] ? printk+0xba/0xed [ 66.375009][ T5] ? log_store.cold+0x16/0x16 [ 66.379667][ T5] ? __warn.cold+0x5/0x45 [ 66.383973][ T5] ? __warn+0xd6/0x1f2 [ 66.388021][ T5] ? __kernel_read+0x41d/0x4d0 [ 66.392779][ T5] __warn.cold+0x20/0x45 [ 66.396999][ T5] ? __kernel_read+0x41d/0x4d0 [ 66.401757][ T5] report_bug+0x1bd/0x210 [ 66.406084][ T5] handle_bug+0x38/0x90 [ 66.410219][ T5] ? fsnotify_first_mark+0x1f0/0x1f0 [ 66.415478][ T5] exc_invalid_op+0x13/0x40 [ 66.419977][ T5] asm_exc_invalid_op+0x12/0x20 [ 66.424818][ T5] RIP: 0010:__kernel_read+0x41d/0x4d0 [ 66.430164][ T5] Code: fd ff ff e8 75 19 b6 ff 45 31 c9 45 31 c0 b9 01 00 00 00 4c 89 f2 89 ee 4c 89 ef e8 5d 22 12 00 e9 46 ff ff ff e8 53 19 b6 ff <0f> 0b 49 c7 c4 ea ff ff ff e9 11 fe ff ff 4c 89 f7 e8 2d 76 f5 ff [ 66.449746][ T5] RSP: 0018:ffffc90000cbfbc8 EFLAGS: 00010293 [ 66.455820][ T5] RAX: 0000000000000000 RBX: ffff8880a9786ac0 RCX: ffffffff81bd9ac4 [ 66.463769][ T5] RDX: ffff8880a95a2140 RSI: ffffffff81bd9e3d RDI: 0000000000000005 [ 66.471716][ T5] RBP: ffff888096bc8060 R08: 0000000000000000 R09: 0000000000000000 [ 66.479763][ T5] R10: 0000000000000000 R11: 1ffffffff1829bdd R12: 00000000081d801e [ 66.496146][ T5] R13: ffffc90000cbfc98 R14: ffff8880a9786b44 R15: 0000000000000007 [ 66.504108][ T5] ? __kernel_read+0xa4/0x4d0 [ 66.508776][ T5] ? __kernel_read+0x41d/0x4d0 [ 66.513543][ T5] ? __kernel_read+0x41d/0x4d0 [ 66.518289][ T5] kernel_read+0x52/0x70 [ 66.522515][ T5] p9_read_work+0x2ac/0xff0 [ 66.527084][ T5] ? do_raw_spin_lock+0x120/0x2b0 [ 66.532086][ T5] ? p9_fd_request+0x330/0x330 [ 66.536839][ T5] ? _raw_spin_unlock_irq+0x1f/0x80 [ 66.542032][ T5] ? lock_is_held_type+0xb0/0xe0 [ 66.546980][ T5] process_one_work+0x94c/0x1670 [ 66.551920][ T5] ? lock_release+0x8d0/0x8d0 [ 66.556575][ T5] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 66.561923][ T5] ? rwlock_bug.part.0+0x90/0x90 [ 66.566839][ T5] ? lockdep_hardirqs_off+0x66/0xa0 [ 66.572018][ T5] worker_thread+0x64c/0x1120 [ 66.576681][ T5] ? process_one_work+0x1670/0x1670 [ 66.581856][ T5] kthread+0x3b5/0x4a0 [ 66.585899][ T5] ? __kthread_bind_mask+0xc0/0xc0 [ 66.590983][ T5] ? __kthread_bind_mask+0xc0/0xc0 [ 66.596087][ T5] ret_from_fork+0x1f/0x30 [ 66.601511][ T5] Kernel Offset: disabled [ 66.605889][ T5] Rebooting in 86400 seconds..