[ OK ] Started System Logging Service. [ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.254' (ECDSA) to the list of known hosts. syzkaller login: [ 148.035039][ T8475] IPVS: ftp: loaded support on port[0] = 21 executing program [ 148.458816][ T27] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 148.698785][ T27] usb 1-1: Using ep0 maxpacket: 8 [ 148.819062][ T27] usb 1-1: config 1 interface 0 altsetting 0 endpoint 0xB has invalid wMaxPacketSize 0 [ 148.830932][ T27] usb 1-1: config 1 interface 0 altsetting 0 bulk endpoint 0xB has invalid maxpacket 0 [ 148.841914][ T27] usb 1-1: config 1 interface 0 altsetting 0 endpoint 0x8A has invalid wMaxPacketSize 0 [ 148.852496][ T27] usb 1-1: config 1 interface 0 altsetting 0 bulk endpoint 0x8A has invalid maxpacket 0 [ 148.863165][ T27] usb 1-1: New USB device found, idVendor=04e6, idProduct=0003, bcdDevice=74.ec [ 148.873559][ T27] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 148.922518][ T27] ums-sddr09 1-1:1.0: USB Mass Storage device detected [ 149.130657][ T27] scsi host1: usb-storage 1-1:1.0 [ 150.058897][ T27] Bluetooth: hci0: command 0x0409 tx timeout [ 150.220598][ T21] scsi 1:0:0:0: Direct-Access Sandisk ImageMate SDDR09 74>< PQ: 0 ANSI: 0 [ 150.237459][ T21] scsi 1:0:0:0: Attached scsi generic sg1 type 0 [ 150.477002][ T3740] usb 1-1: USB disconnect, device number 2 [ 150.488873][ T8513] sddr09: could not read card info [ 150.494610][ T1230] sd 1:0:0:0: [sdb] 0 512-byte logical blocks: (0 B/0 B) [ 150.502082][ T1230] sd 1:0:0:0: [sdb] 0-byte physical blocks [ 150.517265][ T1230] ===================================================== [ 150.524278][ T1230] BUG: KMSAN: uninit-value in scsi_mode_sense+0x10f0/0x17b0 [ 150.531596][ T1230] CPU: 0 PID: 1230 Comm: kworker/u4:8 Not tainted 5.8.0-rc5-syzkaller #0 [ 150.540109][ T1230] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 150.550290][ T1230] Workqueue: events_unbound async_run_entry_fn [ 150.556463][ T1230] Call Trace: [ 150.559789][ T1230] dump_stack+0x21c/0x280 [ 150.564186][ T1230] kmsan_report+0xf7/0x1e0 [ 150.568661][ T1230] __msan_warning+0x58/0xa0 [ 150.573227][ T1230] scsi_mode_sense+0x10f0/0x17b0 [ 150.578235][ T1230] sd_revalidate_disk+0x4ffa/0xdae0 [ 150.583474][ T1230] ? kobject_put+0x2d4/0x490 [ 150.588137][ T1230] ? sd_resume+0x150/0x260 [ 150.592593][ T1230] sd_probe+0x10d1/0x18c0 [ 150.597056][ T1230] ? sd_print_result+0x6b0/0x6b0 [ 150.602021][ T1230] really_probe+0xf20/0x20b0 [ 150.606647][ T1230] ? kmsan_get_metadata+0x116/0x180 [ 150.611886][ T1230] driver_probe_device+0x293/0x390 [ 150.617037][ T1230] __device_attach_driver+0x63f/0x830 [ 150.622455][ T1230] bus_for_each_drv+0x2ca/0x3f0 [ 150.627339][ T1230] ? coredump_store+0xf0/0xf0 [ 150.632058][ T1230] __device_attach_async_helper+0x31a/0x3f0 [ 150.637991][ T1230] async_run_entry_fn+0x1a2/0x7d0 [ 150.643077][ T1230] ? kmsan_get_metadata+0x116/0x180 [ 150.648314][ T1230] ? __device_attach_driver+0x830/0x830 [ 150.653896][ T1230] ? async_schedule_node_domain+0xcf0/0xcf0 [ 150.659819][ T1230] process_one_work+0x1688/0x2140 [ 150.664942][ T1230] worker_thread+0x10bc/0x2730 [ 150.669772][ T1230] ? kmsan_get_metadata+0x116/0x180 [ 150.675007][ T1230] ? kmsan_get_metadata+0x116/0x180 [ 150.680261][ T1230] kthread+0x551/0x590 [ 150.684375][ T1230] ? process_one_work+0x2140/0x2140 [ 150.689611][ T1230] ? kthread_blkcg+0x110/0x110 [ 150.694410][ T1230] ret_from_fork+0x1f/0x30 [ 150.698861][ T1230] [ 150.701196][ T1230] Uninit was stored to memory at: [ 150.706245][ T1230] kmsan_internal_chain_origin+0xad/0x130 [ 150.711992][ T1230] kmsan_memcpy_memmove_metadata+0x272/0x2e0 [ 150.717997][ T1230] kmsan_memcpy_metadata+0xb/0x10 [ 150.723048][ T1230] __msan_memcpy+0x43/0x50 [ 150.727580][ T1230] bio_copy_kern_endio_read+0x494/0x5f0 [ 150.733156][ T1230] bio_endio+0xce1/0xde0 [ 150.737433][ T1230] blk_update_request+0x1178/0x2710 [ 150.742788][ T1230] scsi_end_request+0x102/0xc00 [ 150.747677][ T1230] scsi_io_completion+0x34f/0x2f20 [ 150.752824][ T1230] scsi_finish_command+0x85b/0x880 [ 150.758050][ T1230] scsi_softirq_done+0x683/0xa80 [ 150.763005][ T1230] blk_done_softirq+0x2fe/0x4e0 [ 150.767917][ T1230] __do_softirq+0x2ea/0x7f5 [ 150.772475][ T1230] [ 150.774794][ T1230] Uninit was created at: [ 150.779043][ T1230] kmsan_save_stack_with_flags+0x3c/0x90 [ 150.784680][ T1230] kmsan_alloc_page+0xc5/0x1a0 [ 150.789437][ T1230] __alloc_pages_nodemask+0xdf0/0x1030 [ 150.794898][ T1230] alloc_pages_current+0x685/0xb50 [ 150.800005][ T1230] blk_rq_map_kern+0xdda/0x1570 [ 150.804843][ T1230] __scsi_execute+0x318/0xc80 [ 150.809507][ T1230] scsi_mode_sense+0x600/0x17b0 [ 150.814359][ T1230] sd_revalidate_disk+0x4ffa/0xdae0 [ 150.819547][ T1230] sd_probe+0x10d1/0x18c0 [ 150.823879][ T1230] really_probe+0xf20/0x20b0 [ 150.828473][ T1230] driver_probe_device+0x293/0x390 [ 150.833594][ T1230] __device_attach_driver+0x63f/0x830 [ 150.839118][ T1230] bus_for_each_drv+0x2ca/0x3f0 [ 150.843965][ T1230] __device_attach_async_helper+0x31a/0x3f0 [ 150.849891][ T1230] async_run_entry_fn+0x1a2/0x7d0 [ 150.854922][ T1230] process_one_work+0x1688/0x2140 [ 150.859937][ T1230] worker_thread+0x10bc/0x2730 [ 150.864704][ T1230] kthread+0x551/0x590 [ 150.868764][ T1230] ret_from_fork+0x1f/0x30 [ 150.873265][ T1230] ===================================================== [ 150.880186][ T1230] Disabling lock debugging due to kernel taint [ 150.886336][ T1230] Kernel panic - not syncing: panic_on_warn set ... [ 150.892923][ T1230] CPU: 0 PID: 1230 Comm: kworker/u4:8 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 150.902733][ T1230] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 150.912818][ T1230] Workqueue: events_unbound async_run_entry_fn [ 150.918968][ T1230] Call Trace: [ 150.922310][ T1230] dump_stack+0x21c/0x280 [ 150.926648][ T1230] panic+0x4d7/0xef7 [ 150.930555][ T1230] ? add_taint+0x17c/0x210 [ 150.934975][ T1230] kmsan_report+0x1df/0x1e0 [ 150.939519][ T1230] __msan_warning+0x58/0xa0 [ 150.944049][ T1230] scsi_mode_sense+0x10f0/0x17b0 [ 150.949026][ T1230] sd_revalidate_disk+0x4ffa/0xdae0 [ 150.954236][ T1230] ? kobject_put+0x2d4/0x490 [ 150.958843][ T1230] ? sd_resume+0x150/0x260 [ 150.963273][ T1230] sd_probe+0x10d1/0x18c0 [ 150.967606][ T1230] ? sd_print_result+0x6b0/0x6b0 [ 150.972554][ T1230] really_probe+0xf20/0x20b0 [ 150.977154][ T1230] ? kmsan_get_metadata+0x116/0x180 [ 150.982357][ T1230] driver_probe_device+0x293/0x390 [ 150.987469][ T1230] __device_attach_driver+0x63f/0x830 [ 150.992871][ T1230] bus_for_each_drv+0x2ca/0x3f0 [ 150.997738][ T1230] ? coredump_store+0xf0/0xf0 [ 151.002426][ T1230] __device_attach_async_helper+0x31a/0x3f0 [ 151.008343][ T1230] async_run_entry_fn+0x1a2/0x7d0 [ 151.013382][ T1230] ? kmsan_get_metadata+0x116/0x180 [ 151.018610][ T1230] ? __device_attach_driver+0x830/0x830 [ 151.024184][ T1230] ? async_schedule_node_domain+0xcf0/0xcf0 [ 151.030087][ T1230] process_one_work+0x1688/0x2140 [ 151.035146][ T1230] worker_thread+0x10bc/0x2730 [ 151.039911][ T1230] ? kmsan_get_metadata+0x116/0x180 [ 151.045110][ T1230] ? kmsan_get_metadata+0x116/0x180 [ 151.050495][ T1230] kthread+0x551/0x590 [ 151.054571][ T1230] ? process_one_work+0x2140/0x2140 [ 151.059771][ T1230] ? kthread_blkcg+0x110/0x110 [ 151.064542][ T1230] ret_from_fork+0x1f/0x30 [ 151.070072][ T1230] Kernel Offset: disabled [ 151.074415][ T1230] Rebooting in 86400 seconds..