[  49.7279940] panic: UBSan: Undefined Behavior in /syzkaller/managers/netbsd-kubsan/kernel/sys/arch/amd64/amd64/process_machdep.c:159:2, member access within misaligned address 0xffffb700b3a4d8c8 for type 'struct fpreg' which requires 16 byte alignment

[  49.7480074] cpu1: Begin traceback...
[  49.7780473] vpanic() at netbsd:vpanic+0x2aa sys/kern/subr_prf.c:336
[  49.8281093] isAlreadyReported() at netbsd:isAlreadyReported
[  49.8881838] HandleTypeMismatch.part.1() at netbsd:HandleTypeMismatch.part.1+0xcc
[  49.9382488] HandleTypeMismatch() at netbsd:HandleTypeMismatch+0x7b sys/../common/lib/libc/misc/ubsan.c:408
[  49.9883087] process_read_fpregs() at netbsd:process_read_fpregs+0x3d sys/arch/amd64/amd64/process_machdep.c:159
[  50.0383727] proc_regio() at netbsd:proc_regio+0x164 sys/kern/sys_ptrace_common.c:1478
[  50.0984482] process_dofpregs() at netbsd:process_dofpregs+0xa7 sys/kern/sys_ptrace_common.c:1566
[  50.1485092] do_ptrace() at netbsd:do_ptrace+0x12d6 ptrace_regs sys/kern/sys_ptrace_common.c:897 [inline]
[  50.1485092] do_ptrace() at netbsd:do_ptrace+0x12d6 sys/kern/sys_ptrace_common.c:1429
[  50.1985746] sys_ptrace() at netbsd:sys_ptrace+0x4f sys/kern/sys_ptrace.c:218
[  50.2486376] sys___syscall() at netbsd:sys___syscall+0x1c8 sy_call sys/sys/syscallvar.h:65 [inline]
[  50.2486376] sys___syscall() at netbsd:sys___syscall+0x1c8 sys/kern/sys_syscall.c:77
[  50.3087138] syscall() at netbsd:syscall+0x29a sy_call sys/sys/syscallvar.h:65 [inline]
[  50.3087138] syscall() at netbsd:syscall+0x29a sy_invoke sys/sys/syscallvar.h:94 [inline]
[  50.3087138] syscall() at netbsd:syscall+0x29a sys/arch/x86/x86/syscall.c:138
[  50.3287359] --- syscall (number 198) ---
[  50.3387487] Skipping crash dump on recursive panic
[  50.3387487] panic: UBSan: Undefined Behavior in /syzkaller/managers/netbsd-kubsan/kernel/sys/arch/amd64/amd64/db_machdep.c:153:24, member access within misaligned address 0x4 for type 'struct x86_64_frame' which requires 8 byte alignment

[  50.3587745] Faulted in mid-traceback; aborting...
[  50.3687846] fatal breakpoint trap in supervisor mode
[  50.3687846] trap type 1 code 0 rip 0xffffffff8021ddbd cs 0x8 rflags 0x286 cr2 0x625b68 ilevel 0 rsp 0xffffb700b3a4c4b0
[  50.3787981] curlwp 0xffffb198379d4960 pid 620.3 lowest kstack 0xffffb700b3a4a2c0
Stopped in pid 620.3 (syz-executor.0) 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:159
proc_regio() at netbsd:proc_regio+0x164 sys/kern/sys_ptrace_common.c:1478
process_dofpregs() at netbsd:process_dofpregs+0xa7 sys/kern/sys_ptrace_common.c:1566
do_ptrace() at netbsd:do_ptrace+0x12d6 ptrace_regs sys/kern/sys_ptrace_common.c:897 [inline]
do_ptrace() at netbsd:do_ptrace+0x12d6 sys/kern/sys_ptrace_common.c:1429
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 198) ---
[  50.3888094] Skipping crash dump on recursive panic
[  50.3888094] panic: UBSan: Undefined Behavior in /syzkaller/managers/netbsd-kubsan/kernel/sys/arch/amd64/amd64/db_machdep.c:154:14, member access within misaligned address 0x4 for type 'struct x86_64_frame' which requires 8 byte alignment

[  50.3888094] Faulted in mid-traceback; aborting...
[  50.3888094] fatal breakpoint trap in supervisor mode
[  50.3888094] trap type 1 code 0 rip 0xffffffff8021ddbd cs 0x8 rflags 0x286 cr2 0x625b68 ilevel 0x8 rsp 0xffffb700b3a4b1b0
[  50.3888094] curlwp 0xffffb198379d4960 pid 620.3 lowest kstack 0xffffb700b3a4a2c0
Stopped in pid 620.3 (syz-executor.0) at        netbsd:breakpoint+0x5:  leave