[  52.5040332] panic: LOCKDEBUG: Reader / writer lock error: rw_vector_enter,292: locking against myself
[  52.5140031] cpu0: Begin traceback...
[  52.5296589] vpanic() at netbsd:vpanic+0x2aa sys/kern/subr_prf.c:336
[  52.5597141] snprintf() at netbsd:snprintf
[  52.6098063] lockdebug_abort1() at netbsd:lockdebug_abort1+0x16a sys/kern/subr_lockdebug.c:799
[  52.6498790] lockdebug_wantlock() at netbsd:lockdebug_wantlock+0x36f sys/kern/subr_lockdebug.c:469
[  52.6799350] rw_enter() at netbsd:rw_enter+0x7cd sys/kern/kern_rwlock.c:294
[  52.7200111] uvm_fault_internal() at netbsd:uvm_fault_internal+0x25c uvmfault_lookup sys/uvm/uvm_fault_i.h:128 [inline]
[  52.7200111] uvm_fault_internal() at netbsd:uvm_fault_internal+0x25c uvm_fault_check sys/uvm/uvm_fault.c:960 [inline]
[  52.7200111] uvm_fault_internal() at netbsd:uvm_fault_internal+0x25c sys/uvm/uvm_fault.c:870
[  52.7600813] trap() at netbsd:trap+0x1195 sys/arch/amd64/amd64/trap.c:534
[  52.7701003] --- trap (number 6) ---
[  52.8001541] _ustore_8() at netbsd:_ustore_8+0x21
[  52.8402304] sys___syscall() at netbsd:sys___syscall+0x1c8 sy_call sys/sys/syscallvar.h:65 [inline]
[  52.8402304] sys___syscall() at netbsd:sys___syscall+0x1c8 sys/kern/sys_syscall.c:77
[  52.8903201] syscall() at netbsd:syscall+0x29a sy_call sys/sys/syscallvar.h:65 [inline]
[  52.8903201] syscall() at netbsd:syscall+0x29a sy_invoke sys/sys/syscallvar.h:94 [inline]
[  52.8903201] syscall() at netbsd:syscall+0x29a sys/arch/x86/x86/syscall.c:138
[  52.9003399] --- syscall (number 198) ---
[  52.9003399] Skipping crash dump on recursive panic
[  52.9125411] 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

[  52.9335444] Faulted in mid-traceback; aborting...
[  52.9335444] fatal breakpoint trap in supervisor mode
[  52.9415279] trap type 1 code 0 rip 0xffffffff8021ddbd cs 0x8 rflags 0x286 cr2 0x20000000 ilevel 0 rsp 0xffff9d00a6e21a10
[  52.9541989] curlwp 0xffffefebe3ae5a00 pid 1091.4 lowest kstack 0xffff9d00a6e1f2c0
Stopped in pid 1091.4 (syz-executor.2) at       netbsd:breakpoint+0x5:  leave
?
breakpoint() at netbsd:breakpoint+0x5
db_panic() at netbsd:db_panic+0x109 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+0xa3 x86_curcpu sys/arch/amd64/compile/obj/GENERIC_SYZKALLER/./machine/cpu.h:67 [inline]
db_panic() at netbsd:db_panic+0xa3 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+0x16a sys/kern/subr_lockdebug.c:799
lockdebug_wantlock() at netbsd:lockdebug_wantlock+0x36f sys/kern/subr_lockdebug.c:469
rw_enter() at netbsd:rw_enter+0x7cd sys/kern/kern_rwlock.c:294
uvm_fault_internal() at netbsd:uvm_fault_internal+0x25c uvmfault_lookup sys/uvm/uvm_fault_i.h:128 [inline]
uvm_fault_internal() at netbsd:uvm_fault_internal+0x25c uvm_fault_check sys/uvm/uvm_fault.c:960 [inline]
uvm_fault_internal() at netbsd:uvm_fault_internal+0x25c sys/uvm/uvm_fault.c:870
trap() at netbsd:trap+0x1195 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) ---
[  52.9616616] Skipping crash dump on recursive panic
[  52.9616616] 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

[  52.9616616] Faulted in mid-traceback; aborting...
[  52.9616616] fatal breakpoint trap in supervisor mode
[  52.9616616] trap type 1 code 0 rip 0xffffffff8021ddbd cs 0x8 rflags 0x286 cr2 0x20000000 ilevel 0x8 rsp 0xffff9d00a6e20710
[  52.9616616] curlwp 0xffffefebe3ae5a00 pid 1091.4 lowest kstack 0xffff9d00a6e1f2c0
Stopped in pid 1091.4 (syz-executor.2) at       netbsd:breakpoint+0x5:  leave
db{0}>