[ 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. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.120' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 71.158360][ T8476] ================================================================================ [ 71.167865][ T8476] UBSAN: shift-out-of-bounds in sound/core/oss/pcm_oss.c:705:23 [ 71.175595][ T8476] shift exponent 58 is too large for 32-bit type 'int' [ 71.184019][ T8476] CPU: 1 PID: 8476 Comm: syz-executor572 Not tainted 5.10.0-rc6-next-20201207-syzkaller #0 [ 71.194083][ T8476] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.204142][ T8476] Call Trace: [ 71.207468][ T8476] dump_stack+0x107/0x163 [ 71.211816][ T8476] ubsan_epilogue+0xb/0x5a [ 71.216254][ T8476] __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 [ 71.223026][ T8476] ? vidioc_s_std+0x165/0x610 [ 71.227745][ T8476] ? memcg_slab_free_hook+0x171/0x330 [ 71.233124][ T8476] ? calc_dst_frames.constprop.0.isra.0+0x104/0x130 [ 71.239730][ T8476] snd_pcm_oss_change_params_locked.cold+0x55/0x78 [ 71.246258][ T8476] ? snd_pcm_plugin_append+0x190/0x190 [ 71.251734][ T8476] ? mutex_lock_io_nested+0xf60/0xf60 [ 71.257129][ T8476] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 71.263119][ T8476] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.269379][ T8476] ? __fsnotify_parent+0x488/0x9d0 [ 71.274518][ T8476] snd_pcm_oss_make_ready+0xe7/0x1b0 [ 71.279848][ T8476] snd_pcm_oss_sync+0x1de/0x800 [ 71.284715][ T8476] snd_pcm_oss_release+0x276/0x300 [ 71.289852][ T8476] __fput+0x283/0x920 [ 71.293850][ T8476] ? snd_pcm_oss_sync+0x800/0x800 [ 71.298887][ T8476] task_work_run+0xdd/0x190 [ 71.303408][ T8476] do_exit+0xb89/0x2a00 [ 71.307571][ T8476] ? snd_pcm_oss_ioctl+0x966/0x3420 [ 71.312774][ T8476] ? mm_update_next_owner+0x7a0/0x7a0 [ 71.318146][ T8476] ? snd_pcm_oss_release+0x300/0x300 [ 71.323441][ T8476] ? __x64_sys_openat+0x13f/0x1f0 [ 71.328478][ T8476] do_group_exit+0x125/0x310 [ 71.333081][ T8476] __x64_sys_exit_group+0x3a/0x50 [ 71.338111][ T8476] do_syscall_64+0x2d/0x70 [ 71.342532][ T8476] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 71.348423][ T8476] RIP: 0033:0x43ee98 [ 71.352310][ T8476] Code: Unable to access opcode bytes at RIP 0x43ee6e. [ 71.359173][ T8476] RSP: 002b:00007ffc0b9ddff8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 71.367605][ T8476] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ee98 [ 71.375581][ T8476] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 71.383554][ T8476] RBP: 00000000004be6a8 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 71.391528][ T8476] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 71.399510][ T8476] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 71.415399][ T8476] ================================================================================ [ 71.424767][ T8476] Kernel panic - not syncing: panic_on_warn set ... [ 71.431369][ T8476] CPU: 1 PID: 8476 Comm: syz-executor572 Not tainted 5.10.0-rc6-next-20201207-syzkaller #0 [ 71.441337][ T8476] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.451395][ T8476] Call Trace: [ 71.454695][ T8476] dump_stack+0x107/0x163 [ 71.459030][ T8476] panic+0x343/0x77f [ 71.462931][ T8476] ? __warn_printk+0xf3/0xf3 [ 71.467548][ T8476] ? ubsan_epilogue+0x3e/0x5a [ 71.472249][ T8476] ubsan_epilogue+0x54/0x5a [ 71.476770][ T8476] __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 [ 71.483548][ T8476] ? vidioc_s_std+0x165/0x610 [ 71.488232][ T8476] ? memcg_slab_free_hook+0x171/0x330 [ 71.493631][ T8476] ? calc_dst_frames.constprop.0.isra.0+0x104/0x130 [ 71.500256][ T8476] snd_pcm_oss_change_params_locked.cold+0x55/0x78 [ 71.506780][ T8476] ? snd_pcm_plugin_append+0x190/0x190 [ 71.512243][ T8476] ? mutex_lock_io_nested+0xf60/0xf60 [ 71.517634][ T8476] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 71.523617][ T8476] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.529856][ T8476] ? __fsnotify_parent+0x488/0x9d0 [ 71.534977][ T8476] snd_pcm_oss_make_ready+0xe7/0x1b0 [ 71.540270][ T8476] snd_pcm_oss_sync+0x1de/0x800 [ 71.545126][ T8476] snd_pcm_oss_release+0x276/0x300 [ 71.550250][ T8476] __fput+0x283/0x920 [ 71.554257][ T8476] ? snd_pcm_oss_sync+0x800/0x800 [ 71.559297][ T8476] task_work_run+0xdd/0x190 [ 71.563811][ T8476] do_exit+0xb89/0x2a00 [ 71.567984][ T8476] ? snd_pcm_oss_ioctl+0x966/0x3420 [ 71.573188][ T8476] ? mm_update_next_owner+0x7a0/0x7a0 [ 71.578560][ T8476] ? snd_pcm_oss_release+0x300/0x300 [ 71.583851][ T8476] ? __x64_sys_openat+0x13f/0x1f0 [ 71.588890][ T8476] do_group_exit+0x125/0x310 [ 71.593498][ T8476] __x64_sys_exit_group+0x3a/0x50 [ 71.598528][ T8476] do_syscall_64+0x2d/0x70 [ 71.602962][ T8476] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 71.608859][ T8476] RIP: 0033:0x43ee98 [ 71.612747][ T8476] Code: Unable to access opcode bytes at RIP 0x43ee6e. [ 71.619634][ T8476] RSP: 002b:00007ffc0b9ddff8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 71.628064][ T8476] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ee98 [ 71.636057][ T8476] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 71.644209][ T8476] RBP: 00000000004be6a8 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 71.652183][ T8476] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 71.660167][ T8476] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 71.668808][ T8476] Kernel Offset: disabled [ 71.673214][ T8476] Rebooting in 86400 seconds..