[  43.6338601] panic: LOCKDEBUG: Reader / writer lock error: rw_vector_enter,307: locking against myself
[  43.6438774] cpu1: Begin traceback...
[  43.6639195] vpanic() at netbsd:vpanic+0x2aa sys/kern/subr_prf.c:336
[  43.7240250] snprintf() at netbsd:snprintf
[  43.7841386] lockdebug_abort1() at netbsd:lockdebug_abort1+0x16e sys/kern/subr_lockdebug.c:799
[  43.8442473] lockdebug_wantlock() at netbsd:lockdebug_wantlock+0x357 sys/kern/subr_lockdebug.c:469
[  43.9043550] rw_enter() at netbsd:rw_enter+0x7b9 sys/kern/kern_rwlock.c:309
[  43.9544491] uvm_fault_internal() at netbsd:uvm_fault_internal+0x211 uvmfault_lookup sys/uvm/uvm_fault_i.h:128 [inline]
[  43.9544491] uvm_fault_internal() at netbsd:uvm_fault_internal+0x211 uvm_fault_check sys/uvm/uvm_fault.c:949 [inline]
[  43.9544491] uvm_fault_internal() at netbsd:uvm_fault_internal+0x211 sys/uvm/uvm_fault.c:859
[  44.0045399] trap() at netbsd:trap+0x1215 sys/arch/amd64/amd64/trap.c:534
[  44.0145599] --- trap (number 6) ---
[  44.0646462] _ustore_8() at netbsd:_ustore_8+0x21
[  44.1147385] sys___syscall() at netbsd:sys___syscall+0x1c8 sy_call sys/sys/syscallvar.h:65 [inline]
[  44.1147385] sys___syscall() at netbsd:sys___syscall+0x1c8 sys/kern/sys_syscall.c:77
[  44.1748539] syscall() at netbsd:syscall+0x29a sy_call sys/sys/syscallvar.h:65 [inline]
[  44.1748539] syscall() at netbsd:syscall+0x29a sy_invoke sys/sys/syscallvar.h:94 [inline]
[  44.1748539] syscall() at netbsd:syscall+0x29a sys/arch/x86/x86/syscall.c:138
[  44.1948885] --- syscall (number 198) ---
[  44.1948885] Skipping crash dump on recursive panic
[  44.2049036] 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

[  44.2249381] Faulted in mid-traceback; aborting...
[  44.2249381] fatal breakpoint trap in supervisor mode
[  44.2349623] trap type 1 code 0 rip 0xffffffff8021e7cd cs 0x8 rflags 0x286 cr2 0x20000200 ilevel 0 rsp 0xffff9600b0c78a10
[  44.2449776] curlwp 0xffffdcd5ad3ba580 pid 629.3 lowest kstack 0xffff9600b0c762c0
Stopped in pid 629.3 (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) ---
[  44.2549935] Skipping crash dump on recursive panic
[  44.2549935] 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

[  44.2549935] Faulted in mid-traceback; aborting...
[  44.2549935] fatal breakpoint trap in supervisor mode
[  44.2549935] trap type 1 code 0 rip 0xffffffff8021e7cd cs 0x8 rflags 0x286 cr2 0x20000200 ilevel 0x8 rsp 0xffff9600b0c77710
[  44.2549935] curlwp 0xffffdcd5ad3ba580 pid 629.3 lowest kstack 0xffff9600b0c762c0
Stopped in pid 629.3 (syz-executor.4) at        netbsd:breakpoint+0x5:  leave