[ 143.7233364] panic: LOCKDEBUG: Reader / writer lock error: rw_vector_enter,307: locking against myself [ 143.7333696] cpu1: Begin traceback... [ 143.7633982] vpanic() at netbsd:vpanic+0x2aa sys/kern/subr_prf.c:336 [ 143.8335003] snprintf() at netbsd:snprintf [ 143.9136168] lockdebug_abort1() at netbsd:lockdebug_abort1+0x16e sys/kern/subr_lockdebug.c:799 [ 143.9837214] lockdebug_wantlock() at netbsd:lockdebug_wantlock+0x357 sys/kern/subr_lockdebug.c:469 [ 144.0538254] rw_enter() at netbsd:rw_enter+0x7cc sys/kern/kern_rwlock.c:309 [ 144.1239264] uvm_fault_internal() at netbsd:uvm_fault_internal+0x25a uvmfault_lookup sys/uvm/uvm_fault_i.h:128 [inline] [ 144.1239264] uvm_fault_internal() at netbsd:uvm_fault_internal+0x25a uvm_fault_check sys/uvm/uvm_fault.c:968 [inline] [ 144.1239264] uvm_fault_internal() at netbsd:uvm_fault_internal+0x25a sys/uvm/uvm_fault.c:878 [ 144.1940308] trap() at netbsd:trap+0x1215 sys/arch/amd64/amd64/trap.c:534 [ 144.2040444] --- trap (number 6) --- [ 144.2641335] _ustore_8() at netbsd:_ustore_8+0x21 [ 144.3342388] sys___syscall() at netbsd:sys___syscall+0x1c8 sy_call sys/sys/syscallvar.h:65 [inline] [ 144.3342388] sys___syscall() at netbsd:sys___syscall+0x1c8 sys/kern/sys_syscall.c:77 [ 144.4043419] syscall() at netbsd:syscall+0x29a sy_call sys/sys/syscallvar.h:65 [inline] [ 144.4043419] syscall() at netbsd:syscall+0x29a sy_invoke sys/sys/syscallvar.h:94 [inline] [ 144.4043419] syscall() at netbsd:syscall+0x29a sys/arch/x86/x86/syscall.c:138 [ 144.4243689] --- syscall (number 198) --- [ 144.4343862] Skipping crash dump on recursive panic [ 144.4343862] 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 [ 144.4544109] Faulted in mid-traceback; aborting... [ 144.4644250] fatal breakpoint trap in supervisor mode [ 144.4744405] trap type 1 code 0 rip 0xffffffff8021ddbd cs 0x8 rflags 0x286 cr2 0x20000080 ilevel 0 rsp 0xffff9780b3e7e9e0 [ 144.4844548] curlwp 0xffff97180fb66b40 pid 852.3 lowest kstack 0xffff9780b3e7c2c0 Stopped in pid 852.3 (syz-executor.1) 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 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+0x7cc sys/kern/kern_rwlock.c:309 uvm_fault_internal() at netbsd:uvm_fault_internal+0x25a uvmfault_lookup sys/uvm/uvm_fault_i.h:128 [inline] uvm_fault_internal() at netbsd:uvm_fault_internal+0x25a uvm_fault_check sys/uvm/uvm_fault.c:968 [inline] uvm_fault_internal() at netbsd:uvm_fault_internal+0x25a sys/uvm/uvm_fault.c:878 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) --- [ 144.4944694] Skipping crash dump on recursive panic [ 144.4944694] 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 [ 144.4944694] Faulted in mid-traceback; aborting... [ 144.4944694] fatal breakpoint trap in supervisor mode [ 144.4944694] trap type 1 code 0 rip 0xffffffff8021ddbd cs 0x8 rflags 0x286 cr2 0x20000080 ilevel 0x8 rsp 0xffff9780b3e7d6e0 [ 144.4944694] curlwp 0xffff97180fb66b40 pid 852.3 lowest kstack 0xffff9780b3e7c2c0 Stopped in pid 852.3 (syz-executor.1) at netbsd:breakpoint+0x5: leave