€ [ 126.3753551] panic: kernel diagnostic assertion "uvm_page_locked_p(old_pg)" failed: file "/syzkaller/managers/netbsd-kubsan/kernel/sys/arch/x86/x86/pmap.c", line 4353 [ 126.3850737] cpu1: Begin traceback... [ 126.4151437] vpanic() at netbsd:vpanic+0x2aa sys/kern/subr_prf.c:336 [ 126.4752829] kern_assert() at netbsd:kern_assert+0x63 [ 126.5254024] pmap_enter_ma() at netbsd:pmap_enter_ma+0x1f10 sys/arch/x86/x86/pmap.c:4353 [ 126.5855426] pmap_enter_default() at netbsd:pmap_enter_default+0x7a sys/arch/x86/x86/pmap.c:4170 [ 126.6557042] uvm_fault_lower_enter() at netbsd:uvm_fault_lower_enter+0x283 sys/uvm/uvm_fault.c:2271 [ 126.7258670] uvm_fault_internal() at netbsd:uvm_fault_internal+0x2a32 uvm_fault_lower_promote sys/uvm/uvm_fault.c:2229 [inline] [ 126.7258670] uvm_fault_internal() at netbsd:uvm_fault_internal+0x2a32 uvm_fault_lower sys/uvm/uvm_fault.c:1771 [inline] [ 126.7258670] uvm_fault_internal() at netbsd:uvm_fault_internal+0x2a32 sys/uvm/uvm_fault.c:923 [ 126.7759852] trap() at netbsd:trap+0x1215 sys/arch/amd64/amd64/trap.c:534 [ 126.7960303] --- trap (number 6) --- [ 126.7960303] Skipping crash dump on recursive panic [ 126.7960303] panic: UBSan: Undefined Behavior in /syzkaller/managers/netbsd-kubsan/kernel/sys/arch/amd64/amd64/db_machdep.c:153:24, member access within misaligned address 0x1 for type 'struct x86_64_frame' which requires 8 byte alignment [ 126.8261017] Faulted in mid-traceback; aborting... [ 126.8261017] fatal breakpoint trap in supervisor mode [ 126.8261017] trap type 1 code 0 rip 0xffffffff8021ddbd cs 0x8 rflags 0x286 cr2 0x20001f40 ilevel 0 rsp 0xffff8800b3e46b70 [ 126.8461486] curlwp 0xffff86d9b5f88080 pid 2301.1 lowest kstack 0xffff8800b3e442c0 Stopped in pid 2301.1 (syz-executor.5) at netbsd:breakpoint+0x5: leave ? breakpoint() at netbsd:breakpoint+0x5 db_panic() at netbsd:db_panic+0xd1 sys/ddb/db_panic.c:67 vpanic() at netbsd:vpanic+0x2aa sys/kern/subr_prf.c:336 isAlreadyReported() at netbsd:isAlreadyReported HandleTypeMismatch.part.1() at netbsd:HandleTypeMismatch.part.1+0xcc HandleTypeMismatch() at netbsd:HandleTypeMismatch+0x7b sys/../common/lib/libc/misc/ubsan.c:408 db_nextframe() at netbsd:db_nextframe+0x6f6 sys/arch/amd64/amd64/db_machdep.c:153 db_stack_trace_print() at netbsd:db_stack_trace_print+0x2c4 sys/arch/x86/x86/db_trace.c:277 db_panic() at netbsd:db_panic+0x8b x86_curcpu sys/arch/amd64/compile/obj/GENERIC_SYZKALLER/./machine/cpu.h:67 [inline] db_panic() at netbsd:db_panic+0x8b sys/ddb/db_panic.c:57 vpanic() at netbsd:vpanic+0x2aa sys/kern/subr_prf.c:336 kern_assert() at netbsd:kern_assert+0x63 pmap_enter_ma() at netbsd:pmap_enter_ma+0x1f10 sys/arch/x86/x86/pmap.c:4353 pmap_enter_default() at netbsd:pmap_enter_default+0x7a sys/arch/x86/x86/pmap.c:4170 uvm_fault_lower_enter() at netbsd:uvm_fault_lower_enter+0x283 sys/uvm/uvm_fault.c:2271 uvm_fault_internal() at netbsd:uvm_fault_internal+0x2a32 uvm_fault_lower_promote sys/uvm/uvm_fault.c:2229 [inline] uvm_fault_internal() at netbsd:uvm_fault_internal+0x2a32 uvm_fault_lower sys/uvm/uvm_fault.c:1771 [inline] uvm_fault_internal() at netbsd:uvm_fault_internal+0x2a32 sys/uvm/uvm_fault.c:923 trap() at netbsd:trap+0x1215 sys/arch/amd64/amd64/trap.c:534 --- trap (number 6) --- [ 126.8461486] Skipping crash dump on recursive panic [ 126.8461486] panic: UBSan: Undefined Behavior in /syzkaller/managers/netbsd-kubsan/kernel/sys/arch/amd64/amd64/db_machdep.c:154:14, member access within misaligned address 0x1 for type 'struct x86_64_frame' which requires 8 byte alignment [ 126.8461486] Faulted in mid-traceback; aborting... [ 126.8461486] fatal breakpoint trap in supervisor mode [ 126.8461486] trap type 1 code 0 rip 0xffffffff8021ddbd cs 0x8 rflags 0x286 cr2 0x20001f40 ilevel 0x8 rsp 0xffff8800b3e45870 [ 126.8461486] curlwp 0xffff86d9b5f88080 pid 2301.1 lowest kstack 0xffff8800b3e442c0 Stopped in pid 2301.1 (syz-executor.5) at netbsd:breakpoint+0x5: leave