[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Started OpenBSD Secure Shell server. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.90' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 133.375985][ T7187] ------------[ cut here ]------------ [ 133.382433][ T7187] do not call blocking ops when !TASK_RUNNING; state=8 set at [<0000000008bb419f>] ptrace_stop+0x0/0x9e0 [ 133.395660][ T7187] WARNING: CPU: 0 PID: 7187 at kernel/sched/core.c:7012 __might_sleep+0x135/0x190 [ 133.405599][ T7187] Kernel panic - not syncing: panic_on_warn set ... [ 133.412208][ T7187] CPU: 0 PID: 7187 Comm: syz-executor371 Not tainted 5.8.0-rc6-next-20200724-syzkaller #0 [ 133.422083][ T7187] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 133.432124][ T7187] Call Trace: [ 133.435519][ T7187] dump_stack+0x18f/0x20d [ 133.440734][ T7187] panic+0x2e3/0x75c [ 133.444617][ T7187] ? __warn_printk+0xf3/0xf3 [ 133.449650][ T7187] ? __warn.cold+0x5/0x45 [ 133.453965][ T7187] ? __warn+0xd6/0x1f2 [ 133.458024][ T7187] ? __might_sleep+0x135/0x190 [ 133.462777][ T7187] __warn.cold+0x20/0x45 [ 133.467106][ T7187] ? __might_sleep+0x135/0x190 [ 133.471860][ T7187] report_bug+0x1bd/0x210 [ 133.476187][ T7187] handle_bug+0x38/0x90 [ 133.480345][ T7187] exc_invalid_op+0x14/0x40 [ 133.484861][ T7187] asm_exc_invalid_op+0x12/0x20 [ 133.489705][ T7187] RIP: 0010:__might_sleep+0x135/0x190 [ 133.495078][ T7187] Code: 65 48 8b 1c 25 c0 fe 01 00 48 8d 7b 10 48 89 fe 48 c1 ee 03 80 3c 06 00 75 2b 48 8b 73 10 48 c7 c7 c0 3b 4b 88 e8 ed 34 f5 ff <0f> 0b e9 46 ff ff ff e8 af 04 64 00 e9 29 ff ff ff e8 a5 04 64 00 [ 133.514769][ T7187] RSP: 0018:ffffc90005457c78 EFLAGS: 00010282 [ 133.520962][ T7187] RAX: 0000000000000000 RBX: ffff8880941f00c0 RCX: 0000000000000000 [ 133.528925][ T7187] RDX: ffff8880941f00c0 RSI: ffffffff815d8ed7 RDI: fffff52000a8af81 [ 133.536884][ T7187] RBP: ffffffff884aafa0 R08: 0000000000000001 R09: ffff8880ae6318e7 [ 133.544840][ T7187] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000039 [ 133.552898][ T7187] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880941f0548 [ 133.561003][ T7187] ? vprintk_func+0x97/0x1a6 [ 133.565691][ T7187] ? __might_sleep+0x135/0x190 [ 133.570449][ T7187] ? schedule+0xe7/0x2a0 [ 133.574769][ T7187] ptrace_stop+0x4e2/0x9e0 [ 133.579205][ T7187] get_signal+0xddc/0x1ee0 [ 133.583630][ T7187] do_signal+0x82/0x2520 [ 133.587871][ T7187] ? __do_sys_wait4+0xb4/0x150 [ 133.592626][ T7187] ? copy_siginfo_to_user32+0xa0/0xa0 [ 133.598170][ T7187] ? __task_pid_nr_ns+0x1b7/0x490 [ 133.603326][ T7187] ? __prepare_exit_to_usermode+0x95/0x1c0 [ 133.609129][ T7187] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 133.615107][ T7187] __prepare_exit_to_usermode+0x11f/0x1c0 [ 133.620821][ T7187] do_syscall_64+0x6c/0xe0 [ 133.625313][ T7187] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 133.631403][ T7187] RIP: 0033:0x4412c9 [ 133.635294][ T7187] Code: Bad RIP value. [ 133.639361][ T7187] RSP: 002b:00007ffebe0a3878 EFLAGS: 00000246 ORIG_RAX: 000000000000003d [ 133.647780][ T7187] RAX: fffffffffffffe00 RBX: 0000000000000000 RCX: 00000000004412c9 [ 133.655741][ T7187] RDX: 0000000080000002 RSI: 0000000000000000 RDI: 0000000000000000 [ 133.663960][ T7187] RBP: 0000000000020908 R08: 00000005004002c8 R09: 00000005004002c8 [ 133.671917][ T7187] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402070 [ 133.680147][ T7187] R13: 0000000000402100 R14: 0000000000000000 R15: 0000000000000000 [ 133.690250][ T7187] Kernel Offset: disabled [ 133.694634][ T7187] Rebooting in 86400 seconds..