[  40.6720108] panic: UBSan: Undefined Behavior in /syzkaller/managers/netbsd-kubsan/kernel/sys/arch/amd64/amd64/process_machdep.c:157:2, member access within misaligned address 0xffffd400a6d378c8 for type 'struct fpreg' which requires 16 byte alignment

[  40.6866644] cpu0: Begin traceback...
[  40.7020494] vpanic() at netbsd:vpanic+0x2aa sys/kern/subr_prf.c:336
[  40.7421232] isAlreadyReported() at netbsd:isAlreadyReported
[  40.7922043] HandleTypeMismatch.part.1() at netbsd:HandleTypeMismatch.part.1+0xcc
[  40.8422916] HandleTypeMismatch() at netbsd:HandleTypeMismatch+0x7b sys/../common/lib/libc/misc/ubsan.c:408
[  40.8823586] process_read_fpregs() at netbsd:process_read_fpregs+0x3d sys/arch/amd64/amd64/process_machdep.c:157
[  40.9324441] proc_regio() at netbsd:proc_regio+0x164 sys/kern/sys_ptrace_common.c:1475
[  40.9825284] process_dofpregs() at netbsd:process_dofpregs+0xa7 sys/kern/sys_ptrace_common.c:1563
[  41.0225974] do_ptrace() at netbsd:do_ptrace+0x12be ptrace_regs sys/kern/sys_ptrace_common.c:894 [inline]
[  41.0225974] do_ptrace() at netbsd:do_ptrace+0x12be sys/kern/sys_ptrace_common.c:1426
[  41.0626683] sys_ptrace() at netbsd:sys_ptrace+0x4f sys/kern/sys_ptrace.c:218
[  41.1127547] sys_syscall() at netbsd:sys_syscall+0x1c8 sy_call sys/sys/syscallvar.h:65 [inline]
[  41.1127547] sys_syscall() at netbsd:sys_syscall+0x1c8 sys/kern/sys_syscall.c:77
[  41.1528233] syscall() at netbsd:syscall+0x29a sy_call sys/sys/syscallvar.h:65 [inline]
[  41.1528233] syscall() at netbsd:syscall+0x29a sy_invoke sys/sys/syscallvar.h:94 [inline]
[  41.1528233] syscall() at netbsd:syscall+0x29a sys/arch/x86/x86/syscall.c:138
[  41.1728599] --- syscall (number 0) ---
[  41.1728599] Skipping crash dump on recursive panic
[  41.1848752] panic: UBSan: Undefined Behavior in /syzkaller/managers/netbsd-kubsan/kernel/sys/arch/amd64/amd64/db_machdep.c:153:24, member access within misaligned address 0xffffffff for type 'struct x86_64_frame' which requires 8 byte alignment

[  41.2073251] Faulted in mid-traceback; aborting...
[  41.2073251] fatal breakpoint trap in supervisor mode
[  41.2156062] trap type 1 code 0 rip 0xffffffff8021dddd cs 0x8 rflags 0x286 cr2 0x7f7fff0b5638 ilevel 0 rsp 0xffffd400a6d364b0
[  41.2287038] curlwp 0xffff8205b310e780 pid 603.1 lowest kstack 0xffffd400a6d342c0
Stopped in pid 603.1 (syz-executor5751) 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
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
process_read_fpregs() at netbsd:process_read_fpregs+0x3d sys/arch/amd64/amd64/process_machdep.c:157
proc_regio() at netbsd:proc_regio+0x164 sys/kern/sys_ptrace_common.c:1475
process_dofpregs() at netbsd:process_dofpregs+0xa7 sys/kern/sys_ptrace_common.c:1563
do_ptrace() at netbsd:do_ptrace+0x12be ptrace_regs sys/kern/sys_ptrace_common.c:894 [inline]
do_ptrace() at netbsd:do_ptrace+0x12be sys/kern/sys_ptrace_common.c:1426
sys_ptrace() at netbsd:sys_ptrace+0x4f sys/kern/sys_ptrace.c:218
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 0) ---
[  41.2361716] Skipping crash dump on recursive panic
[  41.2361716] panic: UBSan: Undefined Behavior in /syzkaller/managers/netbsd-kubsan/kernel/sys/arch/amd64/amd64/db_machdep.c:154:14, member access within misaligned address 0xffffffff for type 'struct x86_64_frame' which requires 8 byte alignment

[  41.2361716] Faulted in mid-traceback; aborting...
[  41.2361716] fatal breakpoint trap in supervisor mode
[  41.2361716] trap type 1 code 0 rip 0xffffffff8021dddd cs 0x8 rflags 0x286 cr2 0x7f7fff0b5638 ilevel 0x8 rsp 0xffffd400a6d351b0
[  41.2361716] curlwp 0xffff8205b310e780 pid 603.1 lowest kstack 0xffffd400a6d342c0
Stopped in pid 603.1 (syz-executor5751) at      netbsd:breakpoint+0x5:  leave