[  42.0719343] panic: UBSan: Undefined Behavior in /syzkaller/managers/netbsd-kubsan/kernel/sys/kern/vfs_lockf.c:847:10, signed integer overflow: -8883703364279707927 + -3183795340651554952 cannot be represented in type 'long int'

[  42.0819298] cpu1: Begin traceback...
[  42.1019570] vpanic() at netbsd:vpanic+0x2aa sys/kern/subr_prf.c:336
[  42.1620334] isAlreadyReported() at netbsd:isAlreadyReported
[  42.2221198] HandleOverflow() at netbsd:HandleOverflow+0x1fb sys/../common/lib/libc/misc/ubsan.c:360
[  42.2721789] lf_advlock() at netbsd:lf_advlock+0x2326 sys/kern/vfs_lockf.c:847
[  42.3222452] VOP_ADVLOCK() at netbsd:VOP_ADVLOCK+0x11a sys/kern/vnode_if.c:1518
[  42.3823214] do_fcntl_lock() at netbsd:do_fcntl_lock+0x3dd sys/kern/sys_descrip.c:283
[  42.4323894] sys_fcntl() at netbsd:sys_fcntl+0x115 sys/kern/sys_descrip.c:380
[  42.4924665] sys___syscall() at netbsd:sys___syscall+0x1c8 sy_call sys/sys/syscallvar.h:65 [inline]
[  42.4924665] sys___syscall() at netbsd:sys___syscall+0x1c8 sys/kern/sys_syscall.c:77
[  42.5525444] syscall() at netbsd:syscall+0x29a sy_call sys/sys/syscallvar.h:65 [inline]
[  42.5525444] syscall() at netbsd:syscall+0x29a sy_invoke sys/sys/syscallvar.h:94 [inline]
[  42.5525444] syscall() at netbsd:syscall+0x29a sys/arch/x86/x86/syscall.c:138
[  42.5625568] --- syscall (number 198) ---
[  42.5725696] Skipping crash dump on recursive panic
[  42.5725696] 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

[  42.5925949] Faulted in mid-traceback; aborting...
[  42.6026086] fatal breakpoint trap in supervisor mode
[  42.6026086] trap type 1 code 0 rip 0xffffffff8021dd9d cs 0x8 rflags 0x286 cr2 0x737c37418000 ilevel 0 rsp 0xffffbf80b2824840
[  42.6126228] curlwp 0xffffb3d1a01662c0 pid 400.3 lowest kstack 0xffffbf80b28222c0
Stopped in pid 400.3 (syz-executor.2) 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
lf_advlock() at netbsd:lf_advlock+0x2326 sys/kern/vfs_lockf.c:847
VOP_ADVLOCK() at netbsd:VOP_ADVLOCK+0x11a sys/kern/vnode_if.c:1518
do_fcntl_lock() at netbsd:do_fcntl_lock+0x3dd sys/kern/sys_descrip.c:283
sys_fcntl() at netbsd:sys_fcntl+0x115 sys/kern/sys_descrip.c:380
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) ---
[  42.6226355] Skipping crash dump on recursive panic
[  42.6226355] 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

[  42.6226355] Faulted in mid-traceback; aborting...
[  42.6226355] fatal breakpoint trap in supervisor mode
[  42.6226355] trap type 1 code 0 rip 0xffffffff8021dd9d cs 0x8 rflags 0x286 cr2 0x737c37418000 ilevel 0x8 rsp 0xffffbf80b2823540
[  42.6226355] curlwp 0xffffb3d1a01662c0 pid 400.3 lowest kstack 0xffffbf80b28222c0
Stopped in pid 400.3 (syz-executor.2) at        netbsd:breakpoint+0x5:  leave