[ 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 '10.128.0.131' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 70.985559][ T8461] kernel profiling enabled (shift: 1000000) [ 70.991706][ T8461] ================================================================================ [ 71.000989][ T8461] UBSAN: shift-out-of-bounds in kernel/profile.c:110:31 [ 71.008510][ T8461] shift exponent 1000000 is too large for 64-bit type 'long int' [ 71.016485][ T8461] CPU: 0 PID: 8461 Comm: syz-executor102 Not tainted 5.14.0-rc6-syzkaller #0 [ 71.025284][ T8461] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.035324][ T8461] Call Trace: [ 71.038595][ T8461] dump_stack_lvl+0xcd/0x134 [ 71.043191][ T8461] ubsan_epilogue+0xb/0x5a [ 71.047595][ T8461] __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 [ 71.054347][ T8461] ? __thaw_task+0x90/0x90 [ 71.058765][ T8461] ? sysfs_file_ops+0x1c0/0x1c0 [ 71.063622][ T8461] profile_init+0xfc/0x110 [ 71.068097][ T8461] profiling_store+0x5e/0xd0 [ 71.072678][ T8461] ? kexec_crash_loaded_show+0x30/0x30 [ 71.078127][ T8461] kobj_attr_store+0x50/0x80 [ 71.082706][ T8461] ? kobj_attr_show+0x70/0x70 [ 71.087371][ T8461] sysfs_kf_write+0x110/0x160 [ 71.092035][ T8461] kernfs_fop_write_iter+0x342/0x500 [ 71.097349][ T8461] new_sync_write+0x426/0x650 [ 71.102019][ T8461] ? new_sync_read+0x6e0/0x6e0 [ 71.106784][ T8461] ? lock_release+0x720/0x720 [ 71.111450][ T8461] ? apparmor_file_permission+0x264/0x4e0 [ 71.117171][ T8461] vfs_write+0x75a/0xa40 [ 71.121442][ T8461] ksys_write+0x12d/0x250 [ 71.125811][ T8461] ? __ia32_sys_read+0xb0/0xb0 [ 71.130569][ T8461] ? syscall_enter_from_user_mode+0x21/0x70 [ 71.136474][ T8461] do_syscall_64+0x35/0xb0 [ 71.140940][ T8461] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 71.146826][ T8461] RIP: 0033:0x43ee69 [ 71.150754][ T8461] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 71.170484][ T8461] RSP: 002b:00007fffd1802768 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 71.178895][ T8461] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043ee69 [ 71.186851][ T8461] RDX: 00000000ffffff82 RSI: 00000000200000c0 RDI: 0000000000000003 [ 71.194827][ T8461] RBP: 0000000000402e50 R08: 0000000000000000 R09: 0000000000400488 [ 71.202783][ T8461] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402ee0 [ 71.210742][ T8461] R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488 [ 71.221078][ T8461] ================================================================================ [ 71.230417][ T8461] Kernel panic - not syncing: panic_on_warn set ... [ 71.236999][ T8461] CPU: 0 PID: 8461 Comm: syz-executor102 Not tainted 5.14.0-rc6-syzkaller #0 [ 71.245855][ T8461] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.255995][ T8461] Call Trace: [ 71.259279][ T8461] dump_stack_lvl+0xcd/0x134 [ 71.263880][ T8461] panic+0x306/0x73d [ 71.267772][ T8461] ? __warn_printk+0xf3/0xf3 [ 71.272364][ T8461] ? dump_stack_lvl+0x120/0x134 [ 71.277235][ T8461] ? ubsan_epilogue+0x3e/0x5a [ 71.281931][ T8461] ubsan_epilogue+0x54/0x5a [ 71.286449][ T8461] __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 [ 71.293241][ T8461] ? __thaw_task+0x90/0x90 [ 71.297662][ T8461] ? sysfs_file_ops+0x1c0/0x1c0 [ 71.302607][ T8461] profile_init+0xfc/0x110 [ 71.307026][ T8461] profiling_store+0x5e/0xd0 [ 71.311617][ T8461] ? kexec_crash_loaded_show+0x30/0x30 [ 71.317073][ T8461] kobj_attr_store+0x50/0x80 [ 71.321664][ T8461] ? kobj_attr_show+0x70/0x70 [ 71.326344][ T8461] sysfs_kf_write+0x110/0x160 [ 71.331048][ T8461] kernfs_fop_write_iter+0x342/0x500 [ 71.336344][ T8461] new_sync_write+0x426/0x650 [ 71.341034][ T8461] ? new_sync_read+0x6e0/0x6e0 [ 71.345809][ T8461] ? lock_release+0x720/0x720 [ 71.350485][ T8461] ? apparmor_file_permission+0x264/0x4e0 [ 71.356228][ T8461] vfs_write+0x75a/0xa40 [ 71.360481][ T8461] ksys_write+0x12d/0x250 [ 71.364815][ T8461] ? __ia32_sys_read+0xb0/0xb0 [ 71.369584][ T8461] ? syscall_enter_from_user_mode+0x21/0x70 [ 71.375510][ T8461] do_syscall_64+0x35/0xb0 [ 71.379931][ T8461] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 71.385838][ T8461] RIP: 0033:0x43ee69 [ 71.389735][ T8461] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 71.409616][ T8461] RSP: 002b:00007fffd1802768 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 71.418030][ T8461] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043ee69 [ 71.426007][ T8461] RDX: 00000000ffffff82 RSI: 00000000200000c0 RDI: 0000000000000003 [ 71.433982][ T8461] RBP: 0000000000402e50 R08: 0000000000000000 R09: 0000000000400488 [ 71.441948][ T8461] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402ee0 [ 71.449929][ T8461] R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488 [ 71.459571][ T8461] Kernel Offset: disabled [ 71.463977][ T8461] Rebooting in 86400 seconds..