[  77.1433382] panic: kernel diagnostic assertion "rv" failed: file "/syzkaller/managers/netbsd-kubsan/kernel/sys/miscfs/genfs/genfs_io.c", line 1943 
[  77.1570173] cpu0: Begin traceback...
[  77.1633601] vpanic() at netbsd:vpanic+0x2af sys/kern/subr_prf.c:336
[  77.2134435] kern_assert() at netbsd:kern_assert+0x63
[  77.2535142] genfs_directio() at netbsd:genfs_directio+0xb24 genfs_do_directio sys/miscfs/genfs/genfs_io.c:1943 [inline]
[  77.2535142] genfs_directio() at netbsd:genfs_directio+0xb24 sys/miscfs/genfs/genfs_io.c:1834
[  77.3035962] ffs_write() at netbsd:ffs_write+0xaf4 sys/ufs/ufs/ufs_readwrite.c:354
[  77.3436633] VOP_WRITE() at netbsd:VOP_WRITE+0x121 sys/kern/vnode_if.c:506
[  77.3937505] vn_write() at netbsd:vn_write+0x27a sys/kern/vfs_vnops.c:614
[  77.4438319] do_filewritev.part.1() at netbsd:do_filewritev.part.1+0x40c
[  77.4939165] sys_writev() at netbsd:sys_writev+0x54 do_filewritev sys/kern/sys_generic.c:381 [inline]
[  77.4939165] sys_writev() at netbsd:sys_writev+0x54 sys/kern/sys_generic.c:381
[  77.5339832] sys_syscall() at netbsd:sys_syscall+0x1c8 sy_call sys/sys/syscallvar.h:65 [inline]
[  77.5339832] sys_syscall() at netbsd:sys_syscall+0x1c8 sys/kern/sys_syscall.c:77
[  77.5840678] syscall() at netbsd:syscall+0x29a sy_call sys/sys/syscallvar.h:65 [inline]
[  77.5840678] syscall() at netbsd:syscall+0x29a sy_invoke sys/sys/syscallvar.h:94 [inline]
[  77.5840678] syscall() at netbsd:syscall+0x29a sys/arch/x86/x86/syscall.c:138
[  77.6045859] --- syscall (number 0) ---
[  77.6045859] Skipping crash dump on recursive panic
[  77.6045859] 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

[  77.6353856] Faulted in mid-traceback; aborting...
[  77.6353856] fatal breakpoint trap in supervisor mode
[  77.6451925] trap type 1 code 0 rip 0xffffffff8021f59d cs 0x8 rflags 0x286 cr2 0xffffd500b008a000 ilevel 0 rsp 0xffffd500b73bfc50
[  77.6567297] curlwp 0xfffffd3b260d3900 pid 4631.1 lowest kstack 0xffffd500b73bd2c0
Stopped in pid 4631.1 (syz-executor5525) 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+0x2af 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:417
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+0x294 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+0x2af sys/kern/subr_prf.c:336
kern_assert() at netbsd:kern_assert+0x63
genfs_directio() at netbsd:genfs_directio+0xb24 genfs_do_directio sys/miscfs/genfs/genfs_io.c:1943 [inline]
genfs_directio() at netbsd:genfs_directio+0xb24 sys/miscfs/genfs/genfs_io.c:1834
ffs_write() at netbsd:ffs_write+0xaf4 sys/ufs/ufs/ufs_readwrite.c:354
VOP_WRITE() at netbsd:VOP_WRITE+0x121 sys/kern/vnode_if.c:506
vn_write() at netbsd:vn_write+0x27a sys/kern/vfs_vnops.c:614
do_filewritev.part.1() at netbsd:do_filewritev.part.1+0x40c
sys_writev() at netbsd:sys_writev+0x54 do_filewritev sys/kern/sys_generic.c:381 [inline]
sys_writev() at netbsd:sys_writev+0x54 sys/kern/sys_generic.c:381
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) ---
[  77.6642036] Skipping crash dump on recursive panic
[  77.6642036] 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

[  77.6642036] Faulted in mid-traceback; aborting...
[  77.6642036] fatal breakpoint trap in supervisor mode
[  77.6642036] trap type 1 code 0 rip 0xffffffff8021f59d cs 0x8 rflags 0x282 cr2 0xffffd500b008a000 ilevel 0x8 rsp 0xffffd500b73be8d0
[  77.6642036] curlwp 0xfffffd3b260d3900 pid 4631.1 lowest kstack 0xffffd500b73bd2c0
Stopped in pid 4631.1 (syz-executor5525) at     netbsd:breakpoint+0x5:  leave