Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.21' (ECDSA) to the list of known hosts. 2020/12/27 11:25:34 fuzzer started syzkaller login: [ 54.226384][ T8472] ================================================================================ [ 54.235928][ T8472] UBSAN: invalid-load in kernel/params.c:302:33 [ 54.243345][ T8472] load of value 255 is not a valid value for type '_Bool' [ 54.250812][ T8472] CPU: 0 PID: 8472 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 54.259104][ T8472] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.269217][ T8472] Call Trace: [ 54.272489][ T8472] dump_stack+0x107/0x163 [ 54.276849][ T8472] ubsan_epilogue+0xb/0x5a [ 54.281263][ T8472] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 54.288017][ T8472] param_get_bool.cold+0x14/0x19 [ 54.292959][ T8472] param_attr_show+0x14a/0x220 [ 54.297707][ T8472] ? kernel_param_unlock+0x40/0x40 [ 54.302824][ T8472] module_attr_show+0x48/0x70 [ 54.307492][ T8472] ? func_ptr_is_kernel_text+0x80/0x80 [ 54.313023][ T8472] sysfs_kf_seq_show+0x1f8/0x400 [ 54.317975][ T8472] seq_read_iter+0x4d3/0x1220 [ 54.322647][ T8472] seq_read+0x3dd/0x5b0 [ 54.326786][ T8472] ? seq_read_iter+0x1220/0x1220 [ 54.331797][ T8472] ? lock_downgrade+0x6d0/0x6d0 [ 54.336653][ T8472] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 54.342972][ T8472] kernfs_fop_read+0xe9/0x590 [ 54.347639][ T8472] ? rw_verify_area+0x11d/0x350 [ 54.352473][ T8472] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 54.358097][ T8472] vfs_read+0x1b5/0x570 [ 54.362257][ T8472] ksys_read+0x12d/0x250 [ 54.366489][ T8472] ? vfs_write+0xa80/0xa80 [ 54.370889][ T8472] ? syscall_enter_from_user_mode+0x1d/0x50 [ 54.376771][ T8472] do_syscall_64+0x2d/0x70 [ 54.381173][ T8472] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 54.387242][ T8472] RIP: 0033:0x4b117b [ 54.391115][ T8472] Code: ff e9 69 ff ff ff cc cc cc cc cc cc cc cc cc e8 9b c2 f8 ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 54.410981][ T8472] RSP: 002b:000000c0002b3738 EFLAGS: 00000216 ORIG_RAX: 0000000000000000 [ 54.419568][ T8472] RAX: ffffffffffffffda RBX: 000000c00001e000 RCX: 00000000004b117b [ 54.427607][ T8472] RDX: 0000000000001200 RSI: 000000c0004a3300 RDI: 0000000000000006 [ 54.435562][ T8472] RBP: 000000c0002b3788 R08: 0000000000000001 R09: 0000000000000002 [ 54.443525][ T8472] R10: 0000000000001200 R11: 0000000000000216 R12: ffffffffffffffff [ 54.451575][ T8472] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 54.460598][ T8472] ================================================================================ [ 54.470530][ T8472] Kernel panic - not syncing: panic_on_warn set ... [ 54.477897][ T8472] CPU: 1 PID: 8472 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 54.485923][ T8472] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.495962][ T8472] Call Trace: [ 54.499228][ T8472] dump_stack+0x107/0x163 [ 54.503553][ T8472] panic+0x343/0x77f [ 54.507435][ T8472] ? __warn_printk+0xf3/0xf3 [ 54.512022][ T8472] ? ubsan_epilogue+0x3e/0x5a [ 54.516697][ T8472] ubsan_epilogue+0x54/0x5a [ 54.521453][ T8472] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 54.528042][ T8472] param_get_bool.cold+0x14/0x19 [ 54.532998][ T8472] param_attr_show+0x14a/0x220 [ 54.537775][ T8472] ? kernel_param_unlock+0x40/0x40 [ 54.542972][ T8472] module_attr_show+0x48/0x70 [ 54.547647][ T8472] ? func_ptr_is_kernel_text+0x80/0x80 [ 54.553105][ T8472] sysfs_kf_seq_show+0x1f8/0x400 [ 54.558065][ T8472] seq_read_iter+0x4d3/0x1220 [ 54.562760][ T8472] seq_read+0x3dd/0x5b0 [ 54.566905][ T8472] ? seq_read_iter+0x1220/0x1220 [ 54.571832][ T8472] ? lock_downgrade+0x6d0/0x6d0 [ 54.576759][ T8472] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 54.583000][ T8472] kernfs_fop_read+0xe9/0x590 [ 54.587677][ T8472] ? rw_verify_area+0x11d/0x350 [ 54.592521][ T8472] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 54.598148][ T8472] vfs_read+0x1b5/0x570 [ 54.602382][ T8472] ksys_read+0x12d/0x250 [ 54.606605][ T8472] ? vfs_write+0xa80/0xa80 [ 54.611020][ T8472] ? syscall_enter_from_user_mode+0x1d/0x50 [ 54.616902][ T8472] do_syscall_64+0x2d/0x70 [ 54.621640][ T8472] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 54.628782][ T8472] RIP: 0033:0x4b117b [ 54.632673][ T8472] Code: ff e9 69 ff ff ff cc cc cc cc cc cc cc cc cc e8 9b c2 f8 ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 54.652927][ T8472] RSP: 002b:000000c0002b3738 EFLAGS: 00000216 ORIG_RAX: 0000000000000000 [ 54.661336][ T8472] RAX: ffffffffffffffda RBX: 000000c00001e000 RCX: 00000000004b117b [ 54.669291][ T8472] RDX: 0000000000001200 RSI: 000000c0004a3300 RDI: 0000000000000006 [ 54.677272][ T8472] RBP: 000000c0002b3788 R08: 0000000000000001 R09: 0000000000000002 [ 54.685233][ T8472] R10: 0000000000001200 R11: 0000000000000216 R12: ffffffffffffffff [ 54.693194][ T8472] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 54.704665][ T8472] Kernel Offset: disabled [ 54.709065][ T8472] Rebooting in 86400 seconds..