[ 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 '10.128.0.16' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 70.900715][ T8475] kernel profiling enabled (shift: 1000000) [ 70.906938][ T8475] ================================================================================ [ 70.916216][ T8475] UBSAN: shift-out-of-bounds in kernel/profile.c:110:31 [ 70.924787][ T8475] shift exponent 1000000 is too large for 64-bit type 'long int' [ 70.932672][ T8475] CPU: 1 PID: 8475 Comm: syz-executor506 Not tainted 5.14.0-syzkaller #0 [ 70.941152][ T8475] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.951195][ T8475] Call Trace: [ 70.954460][ T8475] dump_stack_lvl+0xcd/0x134 [ 70.959062][ T8475] ubsan_epilogue+0xb/0x5a [ 70.963471][ T8475] __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 [ 70.970646][ T8475] ? __thaw_task+0x90/0x90 [ 70.975053][ T8475] ? sysfs_file_ops+0x1c0/0x1c0 [ 70.979929][ T8475] profile_init+0xfc/0x110 [ 70.984351][ T8475] profiling_store+0x5e/0xd0 [ 70.988926][ T8475] ? kexec_crash_loaded_show+0x30/0x30 [ 70.994388][ T8475] kobj_attr_store+0x50/0x80 [ 70.998966][ T8475] ? kobj_attr_show+0x70/0x70 [ 71.003628][ T8475] sysfs_kf_write+0x110/0x160 [ 71.008292][ T8475] kernfs_fop_write_iter+0x342/0x500 [ 71.013578][ T8475] new_sync_write+0x426/0x650 [ 71.018250][ T8475] ? new_sync_read+0x6e0/0x6e0 [ 71.023006][ T8475] ? lock_release+0x720/0x720 [ 71.027666][ T8475] ? apparmor_file_permission+0x264/0x4e0 [ 71.033380][ T8475] vfs_write+0x75a/0xa40 [ 71.037612][ T8475] ksys_write+0x12d/0x250 [ 71.041927][ T8475] ? __ia32_sys_read+0xb0/0xb0 [ 71.046690][ T8475] ? syscall_enter_from_user_mode_prepare+0x17/0x40 [ 71.053287][ T8475] __do_fast_syscall_32+0x65/0xf0 [ 71.058322][ T8475] do_fast_syscall_32+0x2f/0x70 [ 71.063165][ T8475] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 71.069657][ T8475] RIP: 0023:0xf7f42549 [ 71.073745][ T8475] Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 [ 71.093341][ T8475] RSP: 002b:00000000fffebe5c EFLAGS: 00000246 ORIG_RAX: 0000000000000004 [ 71.101761][ T8475] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000200000c0 [ 71.109725][ T8475] RDX: 00000000ffffff82 RSI: 00000000fffebeb0 RDI: 00000000080e3000 [ 71.117685][ T8475] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 71.125646][ T8475] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 71.133698][ T8475] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 71.142324][ T8475] ================================================================================ [ 71.151931][ T8475] Kernel panic - not syncing: panic_on_warn set ... [ 71.158523][ T8475] CPU: 1 PID: 8475 Comm: syz-executor506 Not tainted 5.14.0-syzkaller #0 [ 71.167048][ T8475] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.177086][ T8475] Call Trace: [ 71.180399][ T8475] dump_stack_lvl+0xcd/0x134 [ 71.184993][ T8475] panic+0x306/0x73d [ 71.188871][ T8475] ? __warn_printk+0xf3/0xf3 [ 71.193450][ T8475] ? dump_stack_lvl+0x120/0x134 [ 71.198290][ T8475] ? ubsan_epilogue+0x3e/0x5a [ 71.202958][ T8475] ubsan_epilogue+0x54/0x5a [ 71.207449][ T8475] __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 [ 71.214202][ T8475] ? __thaw_task+0x90/0x90 [ 71.218608][ T8475] ? sysfs_file_ops+0x1c0/0x1c0 [ 71.223456][ T8475] profile_init+0xfc/0x110 [ 71.227858][ T8475] profiling_store+0x5e/0xd0 [ 71.232433][ T8475] ? kexec_crash_loaded_show+0x30/0x30 [ 71.237880][ T8475] kobj_attr_store+0x50/0x80 [ 71.242541][ T8475] ? kobj_attr_show+0x70/0x70 [ 71.247213][ T8475] sysfs_kf_write+0x110/0x160 [ 71.251881][ T8475] kernfs_fop_write_iter+0x342/0x500 [ 71.257241][ T8475] new_sync_write+0x426/0x650 [ 71.261904][ T8475] ? new_sync_read+0x6e0/0x6e0 [ 71.266652][ T8475] ? lock_release+0x720/0x720 [ 71.271314][ T8475] ? apparmor_file_permission+0x264/0x4e0 [ 71.277027][ T8475] vfs_write+0x75a/0xa40 [ 71.281256][ T8475] ksys_write+0x12d/0x250 [ 71.285571][ T8475] ? __ia32_sys_read+0xb0/0xb0 [ 71.290322][ T8475] ? syscall_enter_from_user_mode_prepare+0x17/0x40 [ 71.296911][ T8475] __do_fast_syscall_32+0x65/0xf0 [ 71.301922][ T8475] do_fast_syscall_32+0x2f/0x70 [ 71.306758][ T8475] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 71.313083][ T8475] RIP: 0023:0xf7f42549 [ 71.317134][ T8475] Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 [ 71.336723][ T8475] RSP: 002b:00000000fffebe5c EFLAGS: 00000246 ORIG_RAX: 0000000000000004 [ 71.345129][ T8475] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000200000c0 [ 71.353093][ T8475] RDX: 00000000ffffff82 RSI: 00000000fffebeb0 RDI: 00000000080e3000 [ 71.361044][ T8475] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 71.368998][ T8475] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 71.376948][ T8475] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 71.386386][ T8475] Kernel Offset: disabled [ 71.390787][ T8475] Rebooting in 86400 seconds..