INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.156' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 23.659988][ T94] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 23.749791][ T94] usb 1-1: Using ep0 maxpacket: 8 [ 23.869640][ T94] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x85 has an invalid bInterval 0, changing to 7 [ 23.880722][ T94] usb 1-1: New USB device found, idVendor=0c45, idProduct=1010, bcdDevice=6d.5d [ 23.889816][ T94] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 23.898970][ T94] usb 1-1: config 0 descriptor?? [ 23.944494][ T94] yurex 1-1:0.0: USB YUREX device now attached to Yurex #0 [ 24.139993][ T1793] ------------[ cut here ]------------ [ 24.145731][ T1793] do not call blocking ops when !TASK_RUNNING; state=1 set at [<00000000752ebe3a>] prepare_to_wait+0xb1/0x2b0 [ 24.157634][ T1793] WARNING: CPU: 1 PID: 1793 at kernel/sched/core.c:6746 __might_sleep+0x135/0x190 [ 24.166835][ T1793] Kernel panic - not syncing: panic_on_warn set ... [ 24.173418][ T1793] CPU: 1 PID: 1793 Comm: syz-executor150 Not tainted 5.6.0-rc1-syzkaller #0 [ 24.182080][ T1793] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.192147][ T1793] Call Trace: [ 24.195425][ T1793] dump_stack+0xef/0x16e [ 24.199655][ T1793] ? __might_sleep+0x70/0x190 [ 24.208377][ T1793] panic+0x2aa/0x6e1 [ 24.212384][ T1793] ? add_taint.cold+0x16/0x16 [ 24.217052][ T1793] ? __probe_kernel_read+0x188/0x1d0 [ 24.222463][ T1793] ? __warn.cold+0x14/0x30 [ 24.226866][ T1793] ? __warn+0xd5/0x1c8 [ 24.230946][ T1793] ? __might_sleep+0x135/0x190 [ 24.235704][ T1793] __warn.cold+0x2f/0x30 [ 24.239959][ T1793] ? __might_sleep+0x135/0x190 [ 24.244915][ T1793] report_bug+0x27b/0x2f0 [ 24.249350][ T1793] do_error_trap+0x12b/0x1e0 [ 24.254118][ T1793] ? __might_sleep+0x135/0x190 [ 24.258872][ T1793] do_invalid_op+0x32/0x40 [ 24.263278][ T1793] ? __might_sleep+0x135/0x190 [ 24.268047][ T1793] invalid_op+0x23/0x30 [ 24.272645][ T1793] RIP: 0010:__might_sleep+0x135/0x190 [ 24.278020][ T1793] Code: 65 48 8b 1c 25 00 0f 02 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 80 e6 85 e8 d3 d2 f5 ff <0f> 0b e9 46 ff ff ff e8 5f ee 49 00 e9 29 ff ff ff e8 55 ee 49 00 [ 24.297620][ T1793] RSP: 0018:ffff8881c5f27a28 EFLAGS: 00010282 [ 24.303668][ T1793] RAX: 0000000000000000 RBX: ffff8881cfa3b100 RCX: 0000000000000000 [ 24.311618][ T1793] RDX: 0000000000000000 RSI: ffffffff812975ed RDI: ffffed1038be4f37 [ 24.319582][ T1793] RBP: ffffffff86dd9b88 R08: ffff8881cfa3b100 R09: fffffbfff1267696 [ 24.327669][ T1793] R10: fffffbfff1267695 R11: ffffffff8933b4af R12: 0000000000000235 [ 24.336402][ T1793] R13: 0000000000000000 R14: ffffffff83a94dfc R15: 0000000000000cc0 [ 24.344589][ T1793] ? dummy_urb_enqueue+0x7c/0x890 [ 24.349601][ T1793] ? vprintk_func+0x7d/0x113 [ 24.354193][ T1793] ? __might_sleep+0x135/0x190 [ 24.358948][ T1793] kmem_cache_alloc_trace+0x24a/0x310 [ 24.364314][ T1793] dummy_urb_enqueue+0x7c/0x890 [ 24.369149][ T1793] ? usb_hcd_map_urb_for_dma+0x4aa/0x1550 [ 24.376326][ T1793] usb_hcd_submit_urb+0x2aa/0x2120 [ 24.384646][ T1793] ? find_held_lock+0x2d/0x110 [ 24.389388][ T1793] ? prepare_to_wait+0x121/0x2b0 [ 24.394315][ T1793] ? usb_create_hcd+0x30/0x30 [ 24.399395][ T1793] ? mark_lock+0xbc/0x1160 [ 24.403802][ T1793] ? mark_held_locks+0x9f/0xe0 [ 24.408598][ T1793] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 24.414401][ T1793] ? lockdep_hardirqs_on+0x382/0x580 [ 24.419685][ T1793] usb_submit_urb+0x6e5/0x1460 [ 24.424429][ T1793] ? add_wait_queue_exclusive+0xe0/0x180 [ 24.430039][ T1793] yurex_write+0x3e5/0x7c0 [ 24.434451][ T1793] ? yurex_control_callback+0x60/0x60 [ 24.439829][ T1793] ? __kasan_slab_free+0x12e/0x160 [ 24.445647][ T1793] ? finish_wait+0x260/0x260 [ 24.450230][ T1793] ? putname+0xe1/0x120 [ 24.454393][ T1793] ? do_sys_openat2+0x43f/0x740 [ 24.459255][ T1793] ? security_file_permission+0x8a/0x370 [ 24.464887][ T1793] ? yurex_control_callback+0x60/0x60 [ 24.470265][ T1793] __vfs_write+0x76/0x100 [ 24.474589][ T1793] vfs_write+0x262/0x5c0 [ 24.478823][ T1793] ksys_write+0x127/0x250 [ 24.483138][ T1793] ? __ia32_sys_read+0xb0/0xb0 [ 24.487897][ T1793] ? raw_open+0x420/0x420 [ 24.492208][ T1793] ? trace_hardirqs_off_caller+0x55/0x200 [ 24.498091][ T1793] do_syscall_64+0xb6/0x5a0 [ 24.503010][ T1793] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 24.508879][ T1793] RIP: 0033:0x4446a9 [ 24.512772][ T1793] Code: e8 bc af 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 1b d8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 24.532373][ T1793] RSP: 002b:00007ffca999f808 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 24.540778][ T1793] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 00000000004446a9 [ 24.548864][ T1793] RDX: 00000000000000e8 RSI: 0000000020000100 RDI: 0000000000000004 [ 24.556832][ T1793] RBP: 00000000006cf018 R08: 000000000000000f R09: 00000000004002e0 [ 24.564823][ T1793] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402350 [ 24.572795][ T1793] R13: 00000000004023e0 R14: 0000000000000000 R15: 0000000000000000 [ 24.581645][ T1793] Kernel Offset: disabled [ 24.586090][ T1793] Rebooting in 86400 seconds..