Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.203' (ECDSA) to the list of known hosts. 2020/12/27 12:17:22 fuzzer started syzkaller login: [ 88.622702][ T8482] ================================================================================ [ 88.632514][ T8482] UBSAN: invalid-load in kernel/params.c:302:33 [ 88.638749][ T8482] load of value 255 is not a valid value for type '_Bool' [ 88.646463][ T8482] CPU: 0 PID: 8482 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 88.654442][ T8482] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 88.664571][ T8482] Call Trace: [ 88.667837][ T8482] dump_stack+0x107/0x163 [ 88.672196][ T8482] ubsan_epilogue+0xb/0x5a [ 88.676594][ T8482] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 88.683540][ T8482] param_get_bool.cold+0x14/0x19 [ 88.688492][ T8482] param_attr_show+0x14a/0x220 [ 88.693266][ T8482] ? kernel_param_unlock+0x40/0x40 [ 88.698361][ T8482] module_attr_show+0x48/0x70 [ 88.703022][ T8482] ? func_ptr_is_kernel_text+0x80/0x80 [ 88.708458][ T8482] sysfs_kf_seq_show+0x1f8/0x400 [ 88.713392][ T8482] seq_read_iter+0x4d3/0x1220 [ 88.718067][ T8482] seq_read+0x3dd/0x5b0 [ 88.722206][ T8482] ? seq_read_iter+0x1220/0x1220 [ 88.727133][ T8482] ? lock_downgrade+0x6d0/0x6d0 [ 88.731978][ T8482] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 88.738213][ T8482] kernfs_fop_read+0xe9/0x590 [ 88.742871][ T8482] ? rw_verify_area+0x11d/0x350 [ 88.747700][ T8482] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 88.753328][ T8482] vfs_read+0x1b5/0x570 [ 88.757465][ T8482] ksys_read+0x12d/0x250 [ 88.761693][ T8482] ? vfs_write+0xa80/0xa80 [ 88.766089][ T8482] ? syscall_enter_from_user_mode+0x1d/0x50 [ 88.771991][ T8482] do_syscall_64+0x2d/0x70 [ 88.776385][ T8482] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 88.782258][ T8482] RIP: 0033:0x4b117b [ 88.786143][ T8482] 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 [ 88.805742][ T8482] RSP: 002b:000000c00053b738 EFLAGS: 00000216 ORIG_RAX: 0000000000000000 [ 88.814162][ T8482] RAX: ffffffffffffffda RBX: 000000c000020800 RCX: 00000000004b117b [ 88.822185][ T8482] RDX: 0000000000001200 RSI: 000000c000479300 RDI: 0000000000000006 [ 88.830136][ T8482] RBP: 000000c00053b788 R08: 0000000000000001 R09: 0000000000000002 [ 88.838085][ T8482] R10: 0000000000001200 R11: 0000000000000216 R12: ffffffffffffffff [ 88.846193][ T8482] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 88.854595][ T8482] ================================================================================ [ 88.863993][ T8482] Kernel panic - not syncing: panic_on_warn set ... [ 88.870646][ T8482] CPU: 0 PID: 8482 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 88.878609][ T8482] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 88.888649][ T8482] Call Trace: [ 88.891923][ T8482] dump_stack+0x107/0x163 [ 88.896243][ T8482] panic+0x343/0x77f [ 88.900137][ T8482] ? __warn_printk+0xf3/0xf3 [ 88.904720][ T8482] ? ubsan_epilogue+0x3e/0x5a [ 88.909380][ T8482] ubsan_epilogue+0x54/0x5a [ 88.913925][ T8482] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 88.920512][ T8482] param_get_bool.cold+0x14/0x19 [ 88.925460][ T8482] param_attr_show+0x14a/0x220 [ 88.930210][ T8482] ? kernel_param_unlock+0x40/0x40 [ 88.935304][ T8482] module_attr_show+0x48/0x70 [ 88.940307][ T8482] ? func_ptr_is_kernel_text+0x80/0x80 [ 88.945745][ T8482] sysfs_kf_seq_show+0x1f8/0x400 [ 88.950666][ T8482] seq_read_iter+0x4d3/0x1220 [ 88.955335][ T8482] seq_read+0x3dd/0x5b0 [ 88.959477][ T8482] ? seq_read_iter+0x1220/0x1220 [ 88.964402][ T8482] ? lock_downgrade+0x6d0/0x6d0 [ 88.969308][ T8482] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 88.975538][ T8482] kernfs_fop_read+0xe9/0x590 [ 88.980202][ T8482] ? rw_verify_area+0x11d/0x350 [ 88.985031][ T8482] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 88.990644][ T8482] vfs_read+0x1b5/0x570 [ 88.994857][ T8482] ksys_read+0x12d/0x250 [ 88.999078][ T8482] ? vfs_write+0xa80/0xa80 [ 89.003472][ T8482] ? syscall_enter_from_user_mode+0x1d/0x50 [ 89.009348][ T8482] do_syscall_64+0x2d/0x70 [ 89.013745][ T8482] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 89.019715][ T8482] RIP: 0033:0x4b117b [ 89.023766][ T8482] 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 [ 89.043544][ T8482] RSP: 002b:000000c00053b738 EFLAGS: 00000216 ORIG_RAX: 0000000000000000 [ 89.051958][ T8482] RAX: ffffffffffffffda RBX: 000000c000020800 RCX: 00000000004b117b [ 89.059906][ T8482] RDX: 0000000000001200 RSI: 000000c000479300 RDI: 0000000000000006 [ 89.067855][ T8482] RBP: 000000c00053b788 R08: 0000000000000001 R09: 0000000000000002 [ 89.075915][ T8482] R10: 0000000000001200 R11: 0000000000000216 R12: ffffffffffffffff [ 89.083864][ T8482] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 89.095358][ T8482] Kernel Offset: disabled [ 89.099831][ T8482] Rebooting in 86400 seconds..