[ 49.1145087] panic: LOCKDEBUG: Reader / writer lock error: rw_vector_enter,307: locking against myself [ 49.1237068] cpu0: Begin traceback... [ 49.1402681] vpanic() at netbsd:vpanic+0x2aa sys/kern/subr_prf.c:336 [ 49.1703297] snprintf() at netbsd:snprintf [ 49.2204360] lockdebug_abort1() at netbsd:lockdebug_abort1+0x16e sys/kern/subr_lockdebug.c:799 [ 49.2705409] lockdebug_wantlock() at netbsd:lockdebug_wantlock+0x357 sys/kern/subr_lockdebug.c:469 [ 49.3206425] rw_enter() at netbsd:rw_enter+0x7b9 sys/kern/kern_rwlock.c:309 [ 49.3807718] uvm_fault_internal() at netbsd:uvm_fault_internal+0x211 uvmfault_lookup sys/uvm/uvm_fault_i.h:128 [inline] [ 49.3807718] uvm_fault_internal() at netbsd:uvm_fault_internal+0x211 uvm_fault_check sys/uvm/uvm_fault.c:949 [inline] [ 49.3807718] uvm_fault_internal() at netbsd:uvm_fault_internal+0x211 sys/uvm/uvm_fault.c:859 [ 49.4308713] trap() at netbsd:trap+0x1215 sys/arch/amd64/amd64/trap.c:534 [ 49.4408927] --- trap (number 6) --- [ 49.4909994] _ustore_8() at netbsd:_ustore_8+0x21 [ 49.5411010] sys___syscall() at netbsd:sys___syscall+0x1c8 sy_call sys/sys/syscallvar.h:65 [inline] [ 49.5411010] sys___syscall() at netbsd:sys___syscall+0x1c8 sys/kern/sys_syscall.c:77 [ 49.6012291] syscall() at netbsd:syscall+0x29a sy_call sys/sys/syscallvar.h:65 [inline] [ 49.6012291] syscall() at netbsd:syscall+0x29a sy_invoke sys/sys/syscallvar.h:94 [inline] [ 49.6012291] syscall() at netbsd:syscall+0x29a sys/arch/x86/x86/syscall.c:138 [ 49.6212704] --- syscall (number 198) --- [ 49.6212704] Skipping crash dump on recursive panic [ 49.6342959] panic: UBSan: Undefined Behavior in /syzkaller/managers/netbsd-kubsan/kernel/sys/arch/amd64/amd64/db_machdep.c:153:24, member access within misaligned address 0x3 for type 'struct x86_64_frame' which requires 8 byte alignment [ 49.6554100] Faulted in mid-traceback; aborting... [ 49.6554100] fatal breakpoint trap in supervisor mode [ 49.6635620] trap type 1 code 0 rip 0xffffffff8021e7cd cs 0x8 rflags 0x286 cr2 0x200003c0 ilevel 0 rsp 0xffff9680b2c98a10 [ 49.6762316] curlwp 0xffff96425e483140 pid 260.4 lowest kstack 0xffff9680b2c962c0 Stopped in pid 260.4 (syz-executor.4) 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:56 [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 snprintf() at netbsd:snprintf lockdebug_abort1() at netbsd:lockdebug_abort1+0x16e sys/kern/subr_lockdebug.c:799 lockdebug_wantlock() at netbsd:lockdebug_wantlock+0x357 sys/kern/subr_lockdebug.c:469 rw_enter() at netbsd:rw_enter+0x7b9 sys/kern/kern_rwlock.c:309 uvm_fault_internal() at netbsd:uvm_fault_internal+0x211 uvmfault_lookup sys/uvm/uvm_fault_i.h:128 [inline] uvm_fault_internal() at netbsd:uvm_fault_internal+0x211 uvm_fault_check sys/uvm/uvm_fault.c:949 [inline] uvm_fault_internal() at netbsd:uvm_fault_internal+0x211 sys/uvm/uvm_fault.c:859 trap() at netbsd:trap+0x1215 sys/arch/amd64/amd64/trap.c:534 --- trap (number 6) --- _ustore_8() at netbsd:_ustore_8+0x21 sys___syscall() at netbsd:sys___syscall+0x1c8 sy_call sys/sys/syscallvar.h:65 [inline] sys___syscall() at netbsd:sys___syscall+0x1c8 sys/kern/sys_syscall.c:77 syscall() at netbsd:syscall+0x29a sy_call sys/sys/syscallvar.h:65 [inline] syscall() at netbsd:syscall+0x29a sy_invoke sys/sys/syscallvar.h:94 [inline] syscall() at netbsd:syscall+0x29a sys/arch/x86/x86/syscall.c:138 --- syscall (number 198) --- [ 49.6836017] Skipping crash dump on recursive panic [ 49.6836017] panic: UBSan: Undefined Behavior in /syzkaller/managers/netbsd-kubsan/kernel/sys/arch/amd64/amd64/db_machdep.c:154:14, member access within misaligned address 0x3 for type 'struct x86_64_frame' which requires 8 byte alignment [ 49.6836017] Faulted in mid-traceback; aborting... [ 49.6836017] fatal breakpoint trap in supervisor mode [ 49.6836017] trap type 1 code 0 rip 0xffffffff8021e7cd cs 0x8 rflags 0x286 cr2 0x200003c0 ilevel 0x8 rsp 0xffff9680b2c97710 [ 49.6836017] curlwp 0xffff96425e483140 pid 260.4 lowest kstack 0xffff9680b2c962c0 Stopped in pid 260.4 (syz-executor.4) at netbsd:breakpoint+0x5: leave