Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.207' (ECDSA) to the list of known hosts. 2020/12/27 11:45:03 fuzzer started syzkaller login: [ 53.310174][ T8470] ================================================================================ [ 53.320257][ T8470] UBSAN: invalid-load in kernel/params.c:302:33 [ 53.326665][ T8470] load of value 255 is not a valid value for type '_Bool' [ 53.334052][ T8470] CPU: 0 PID: 8470 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 53.342367][ T8470] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.352402][ T8470] Call Trace: [ 53.355662][ T8470] dump_stack+0x107/0x163 [ 53.359992][ T8470] ubsan_epilogue+0xb/0x5a [ 53.364389][ T8470] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 53.370962][ T8470] param_get_bool.cold+0x14/0x19 [ 53.375881][ T8470] param_attr_show+0x14a/0x220 [ 53.380628][ T8470] ? kernel_param_unlock+0x40/0x40 [ 53.385723][ T8470] module_attr_show+0x48/0x70 [ 53.390380][ T8470] ? func_ptr_is_kernel_text+0x80/0x80 [ 53.395821][ T8470] sysfs_kf_seq_show+0x1f8/0x400 [ 53.400741][ T8470] seq_read_iter+0x4d3/0x1220 [ 53.405425][ T8470] seq_read+0x3dd/0x5b0 [ 53.409575][ T8470] ? seq_read_iter+0x1220/0x1220 [ 53.414498][ T8470] ? lock_downgrade+0x6d0/0x6d0 [ 53.419330][ T8470] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 53.425556][ T8470] kernfs_fop_read+0xe9/0x590 [ 53.430215][ T8470] ? rw_verify_area+0x11d/0x350 [ 53.435048][ T8470] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 53.440849][ T8470] vfs_read+0x1b5/0x570 [ 53.445161][ T8470] ksys_read+0x12d/0x250 [ 53.449382][ T8470] ? vfs_write+0xa80/0xa80 [ 53.453778][ T8470] ? syscall_enter_from_user_mode+0x1d/0x50 [ 53.459656][ T8470] do_syscall_64+0x2d/0x70 [ 53.464052][ T8470] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 53.469932][ T8470] RIP: 0033:0x4b117b [ 53.473808][ T8470] 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 [ 53.493392][ T8470] RSP: 002b:000000c0003f7738 EFLAGS: 00000216 ORIG_RAX: 0000000000000000 [ 53.501797][ T8470] RAX: ffffffffffffffda RBX: 000000c00001e000 RCX: 00000000004b117b [ 53.509848][ T8470] RDX: 0000000000001200 RSI: 000000c00036d300 RDI: 0000000000000006 [ 53.517811][ T8470] RBP: 000000c0003f7788 R08: 0000000000000001 R09: 0000000000000002 [ 53.525762][ T8470] R10: 0000000000001200 R11: 0000000000000216 R12: ffffffffffffffff [ 53.533710][ T8470] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 53.543372][ T8470] ================================================================================ [ 53.552695][ T8470] Kernel panic - not syncing: panic_on_warn set ... [ 53.559258][ T8470] CPU: 0 PID: 8470 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 53.567213][ T8470] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.577247][ T8470] Call Trace: [ 53.580505][ T8470] dump_stack+0x107/0x163 [ 53.584816][ T8470] panic+0x343/0x77f [ 53.588689][ T8470] ? __warn_printk+0xf3/0xf3 [ 53.593263][ T8470] ? ubsan_epilogue+0x3e/0x5a [ 53.597923][ T8470] ubsan_epilogue+0x54/0x5a [ 53.602408][ T8470] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 53.608991][ T8470] param_get_bool.cold+0x14/0x19 [ 53.614430][ T8470] param_attr_show+0x14a/0x220 [ 53.619190][ T8470] ? kernel_param_unlock+0x40/0x40 [ 53.624294][ T8470] module_attr_show+0x48/0x70 [ 53.628951][ T8470] ? func_ptr_is_kernel_text+0x80/0x80 [ 53.634390][ T8470] sysfs_kf_seq_show+0x1f8/0x400 [ 53.639485][ T8470] seq_read_iter+0x4d3/0x1220 [ 53.644164][ T8470] seq_read+0x3dd/0x5b0 [ 53.648300][ T8470] ? seq_read_iter+0x1220/0x1220 [ 53.653323][ T8470] ? lock_downgrade+0x6d0/0x6d0 [ 53.658173][ T8470] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 53.664401][ T8470] kernfs_fop_read+0xe9/0x590 [ 53.669057][ T8470] ? rw_verify_area+0x11d/0x350 [ 53.673900][ T8470] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 53.679512][ T8470] vfs_read+0x1b5/0x570 [ 53.683646][ T8470] ksys_read+0x12d/0x250 [ 53.687965][ T8470] ? vfs_write+0xa80/0xa80 [ 53.692361][ T8470] ? syscall_enter_from_user_mode+0x1d/0x50 [ 53.698237][ T8470] do_syscall_64+0x2d/0x70 [ 53.702720][ T8470] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 53.708596][ T8470] RIP: 0033:0x4b117b [ 53.712468][ T8470] 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 [ 53.732053][ T8470] RSP: 002b:000000c0003f7738 EFLAGS: 00000216 ORIG_RAX: 0000000000000000 [ 53.740454][ T8470] RAX: ffffffffffffffda RBX: 000000c00001e000 RCX: 00000000004b117b [ 53.748404][ T8470] RDX: 0000000000001200 RSI: 000000c00036d300 RDI: 0000000000000006 [ 53.756358][ T8470] RBP: 000000c0003f7788 R08: 0000000000000001 R09: 0000000000000002 [ 53.764488][ T8470] R10: 0000000000001200 R11: 0000000000000216 R12: ffffffffffffffff [ 53.772439][ T8470] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 53.783861][ T8470] Kernel Offset: disabled [ 53.788256][ T8470] Rebooting in 86400 seconds..