[ 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... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.207' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 73.457665][ T8526] ================================================================================ [ 73.467833][ T8526] UBSAN: shift-out-of-bounds in drivers/usb/gadget/udc/dummy_hcd.c:2293:33 [ 73.477474][ T8526] shift exponent 257 is too large for 32-bit type 'int' [ 73.484578][ T8526] CPU: 0 PID: 8526 Comm: syz-executor949 Not tainted 5.10.0-syzkaller #0 [ 73.493104][ T8526] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.503320][ T8526] Call Trace: [ 73.506630][ T8526] dump_stack+0x107/0x163 [ 73.511200][ T8526] ubsan_epilogue+0xb/0x5a [ 73.515641][ T8526] __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 [ 73.522430][ T8526] ? _raw_spin_lock_irqsave+0x4e/0x50 [ 73.528019][ T8526] dummy_hub_control.cold+0x1a/0xbc [ 73.533231][ T8526] usb_hcd_submit_urb+0xcaa/0x22d0 [ 73.538790][ T8526] ? dummy_bus_resume+0x260/0x260 [ 73.544326][ T8526] ? usb_add_hcd+0x2c0/0x2c0 [ 73.549206][ T8526] ? kasan_save_stack+0x32/0x40 [ 73.554061][ T8526] ? kasan_save_stack+0x1b/0x40 [ 73.558912][ T8526] ? __kasan_kmalloc.constprop.0+0xc2/0xd0 [ 73.564936][ T8526] ? usb_alloc_urb+0x65/0xb0 [ 73.569536][ T8526] ? usb_control_msg+0x1c9/0x4a0 [ 73.574475][ T8526] ? do_proc_control+0x4cb/0x9c0 [ 73.580307][ T8526] ? usbdev_ioctl+0x12c1/0x3b20 [ 73.587269][ T8526] ? __x64_sys_ioctl+0x193/0x200 [ 73.593859][ T8526] ? do_syscall_64+0x2d/0x70 [ 73.598545][ T8526] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 73.604649][ T8526] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 73.611264][ T8526] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 73.617855][ T8526] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 73.624044][ T8526] usb_submit_urb+0x6e4/0x1560 [ 73.628815][ T8526] ? lockdep_init_map_waits+0x250/0x720 [ 73.634379][ T8526] usb_start_wait_urb+0x101/0x4c0 [ 73.639421][ T8526] ? usb_api_blocking_completion+0xa0/0xa0 [ 73.645427][ T8526] ? kasan_unpoison_shadow+0x33/0x40 [ 73.650735][ T8526] ? memset+0x20/0x40 [ 73.656141][ T8526] usb_control_msg+0x31c/0x4a0 [ 73.661195][ T8526] ? usb_start_wait_urb+0x4c0/0x4c0 [ 73.666485][ T8526] ? wait_for_completion_io+0x260/0x260 [ 73.672601][ T8526] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 73.679666][ T8526] ? snoop_urb+0x64/0x130 [ 73.684032][ T8526] do_proc_control+0x4cb/0x9c0 [ 73.688837][ T8526] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 73.695116][ T8526] usbdev_ioctl+0x12c1/0x3b20 [ 73.700323][ T8526] ? processcompl_compat+0x680/0x680 [ 73.705983][ T8526] ? putname+0xe1/0x120 [ 73.710244][ T8526] ? __sanitizer_cov_trace_switch+0x63/0xf0 [ 73.716619][ T8526] ? do_vfs_ioctl+0x27d/0x1090 [ 73.721560][ T8526] ? generic_block_fiemap+0x60/0x60 [ 73.727060][ T8526] ? build_open_flags+0x680/0x680 [ 73.732111][ T8526] ? __x64_sys_open+0x119/0x1c0 [ 73.736971][ T8526] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 73.743243][ T8526] ? processcompl_compat+0x680/0x680 [ 73.748549][ T8526] __x64_sys_ioctl+0x193/0x200 [ 73.753336][ T8526] do_syscall_64+0x2d/0x70 [ 73.757767][ T8526] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 73.764484][ T8526] RIP: 0033:0x443f29 [ 73.768380][ T8526] 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 fb d7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 73.789260][ T8526] RSP: 002b:00007ffc10df4328 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 73.797699][ T8526] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443f29 [ 73.805795][ T8526] RDX: 0000000020000000 RSI: 00000000c0185500 RDI: 0000000000000003 [ 73.813795][ T8526] RBP: 00000000006ce018 R08: 0000000000000000 R09: 00000000004002e0 [ 73.821869][ T8526] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000401bb0 [ 73.830640][ T8526] R13: 0000000000401c40 R14: 0000000000000000 R15: 0000000000000000 [ 73.838654][ T8526] ================================================================================ [ 73.848086][ T8526] Kernel panic - not syncing: panic_on_warn set ... [ 73.854765][ T8526] CPU: 0 PID: 8526 Comm: syz-executor949 Not tainted 5.10.0-syzkaller #0 [ 73.863197][ T8526] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.873631][ T8526] Call Trace: [ 73.876935][ T8526] dump_stack+0x107/0x163 [ 73.881426][ T8526] panic+0x343/0x77f [ 73.885352][ T8526] ? __warn_printk+0xf3/0xf3 [ 73.889971][ T8526] ? ubsan_epilogue+0x3e/0x5a [ 73.894762][ T8526] ubsan_epilogue+0x54/0x5a [ 73.899621][ T8526] __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 [ 73.906421][ T8526] ? _raw_spin_lock_irqsave+0x4e/0x50 [ 73.912128][ T8526] dummy_hub_control.cold+0x1a/0xbc [ 73.917360][ T8526] usb_hcd_submit_urb+0xcaa/0x22d0 [ 73.923067][ T8526] ? dummy_bus_resume+0x260/0x260 [ 73.928125][ T8526] ? usb_add_hcd+0x2c0/0x2c0 [ 73.932946][ T8526] ? kasan_save_stack+0x32/0x40 [ 73.937797][ T8526] ? kasan_save_stack+0x1b/0x40 [ 73.942658][ T8526] ? __kasan_kmalloc.constprop.0+0xc2/0xd0 [ 73.948615][ T8526] ? usb_alloc_urb+0x65/0xb0 [ 73.953316][ T8526] ? usb_control_msg+0x1c9/0x4a0 [ 73.958248][ T8526] ? do_proc_control+0x4cb/0x9c0 [ 73.963448][ T8526] ? usbdev_ioctl+0x12c1/0x3b20 [ 73.968308][ T8526] ? __x64_sys_ioctl+0x193/0x200 [ 73.973423][ T8526] ? do_syscall_64+0x2d/0x70 [ 73.978147][ T8526] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 73.984223][ T8526] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 73.990470][ T8526] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 73.997569][ T8526] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 74.003609][ T8526] usb_submit_urb+0x6e4/0x1560 [ 74.008403][ T8526] ? lockdep_init_map_waits+0x250/0x720 [ 74.014259][ T8526] usb_start_wait_urb+0x101/0x4c0 [ 74.019609][ T8526] ? usb_api_blocking_completion+0xa0/0xa0 [ 74.025878][ T8526] ? kasan_unpoison_shadow+0x33/0x40 [ 74.034456][ T8526] ? memset+0x20/0x40 [ 74.038470][ T8526] usb_control_msg+0x31c/0x4a0 [ 74.043245][ T8526] ? usb_start_wait_urb+0x4c0/0x4c0 [ 74.048439][ T8526] ? wait_for_completion_io+0x260/0x260 [ 74.054013][ T8526] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 74.060283][ T8526] ? snoop_urb+0x64/0x130 [ 74.064621][ T8526] do_proc_control+0x4cb/0x9c0 [ 74.069404][ T8526] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 74.075647][ T8526] usbdev_ioctl+0x12c1/0x3b20 [ 74.080341][ T8526] ? processcompl_compat+0x680/0x680 [ 74.085636][ T8526] ? putname+0xe1/0x120 [ 74.089894][ T8526] ? __sanitizer_cov_trace_switch+0x63/0xf0 [ 74.095792][ T8526] ? do_vfs_ioctl+0x27d/0x1090 [ 74.100551][ T8526] ? generic_block_fiemap+0x60/0x60 [ 74.105862][ T8526] ? build_open_flags+0x680/0x680 [ 74.110895][ T8526] ? __x64_sys_open+0x119/0x1c0 [ 74.115761][ T8526] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 74.122015][ T8526] ? processcompl_compat+0x680/0x680 [ 74.127309][ T8526] __x64_sys_ioctl+0x193/0x200 [ 74.132070][ T8526] do_syscall_64+0x2d/0x70 [ 74.136500][ T8526] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 74.143008][ T8526] RIP: 0033:0x443f29 [ 74.146896][ T8526] 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 fb d7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 74.166807][ T8526] RSP: 002b:00007ffc10df4328 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 74.175370][ T8526] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443f29 [ 74.184363][ T8526] RDX: 0000000020000000 RSI: 00000000c0185500 RDI: 0000000000000003 [ 74.192623][ T8526] RBP: 00000000006ce018 R08: 0000000000000000 R09: 00000000004002e0 [ 74.200850][ T8526] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000401bb0 [ 74.208920][ T8526] R13: 0000000000401c40 R14: 0000000000000000 R15: 0000000000000000 [ 74.217653][ T8526] Kernel Offset: disabled [ 74.222373][ T8526] Rebooting in 86400 seconds..