[  49.8131484] panic: UBSan: Undefined Behavior in /syzkaller/managers/netbsd-kubsan/kernel/sys/kern/subr_time.c:344:3, signed integer overflow: -9223372036854775808 - 49 cannot be represented in type 'long int'

[  49.8354735] cpu0: Begin traceback...
[  49.8576429] vpanic() at netbsd:vpanic+0x2aa sys/kern/subr_prf.c:336
[  49.9244109] isAlreadyReported() at netbsd:isAlreadyReported
[  49.9911789] HandleOverflow() at netbsd:HandleOverflow+0x1fb sys/../common/lib/libc/misc/ubsan.c:360
[  50.0579479] ts2timo() at netbsd:ts2timo+0x649 sys/kern/subr_time.c:344
[  50.1247144] nanosleep1() at netbsd:nanosleep1+0x3e sys/kern/kern_time.c:340
[  50.1803557] sys_clock_nanosleep() at netbsd:sys_clock_nanosleep+0xb7 sys/kern/kern_time.c:320
[  50.2471265] sys___syscall() at netbsd:sys___syscall+0x1c8 sy_call sys/sys/syscallvar.h:65 [inline]
[  50.2471265] sys___syscall() at netbsd:sys___syscall+0x1c8 sys/kern/sys_syscall.c:77
[  50.3138947] syscall() at netbsd:syscall+0x29a sy_call sys/sys/syscallvar.h:65 [inline]
[  50.3138947] syscall() at netbsd:syscall+0x29a sy_invoke sys/sys/syscallvar.h:94 [inline]
[  50.3138947] syscall() at netbsd:syscall+0x29a sys/arch/x86/x86/syscall.c:138
[  50.3361530] --- syscall (number 198) ---
[  50.3361530] Skipping crash dump on recursive panic
[  50.3486589] 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

[  50.3719875] Faulted in mid-traceback; aborting...
[  50.3719875] fatal breakpoint trap in supervisor mode
[  50.3808554] trap type 1 code 0 rip 0xffffffff8021e7cd cs 0x8 rflags 0x282 cr2 0x20001a40 ilevel 0 rsp 0xffff9380b1604960
[  50.3949389] curlwp 0xffffcc115967e8e0 pid 637.3 lowest kstack 0xffff9380b16022c0
Stopped in pid 637.3 (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
isAlreadyReported() at netbsd:isAlreadyReported
HandleOverflow() at netbsd:HandleOverflow+0x1fb sys/../common/lib/libc/misc/ubsan.c:360
ts2timo() at netbsd:ts2timo+0x649 sys/kern/subr_time.c:344
nanosleep1() at netbsd:nanosleep1+0x3e sys/kern/kern_time.c:340
sys_clock_nanosleep() at netbsd:sys_clock_nanosleep+0xb7 sys/kern/kern_time.c:320
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) ---
[  50.4031251] Skipping crash dump on recursive panic
[  50.4031251] 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

[  50.4031251] Faulted in mid-traceback; aborting...
[  50.4031251] fatal breakpoint trap in supervisor mode
[  50.4031251] trap type 1 code 0 rip 0xffffffff8021e7cd cs 0x8 rflags 0x282 cr2 0x20001a40 ilevel 0x8 rsp 0xffff9380b1603660
[  50.4031251] curlwp 0xffffcc115967e8e0 pid 637.3 lowest kstack 0xffff9380b16022c0
Stopped in pid 637.3 (syz-executor.4) at        netbsd:breakpoint+0x5:  leave