[ 293.2424005] panic: UBSan: Undefined Behavior in /syzkaller/managers/ci2-netbsd-kubsan/kernel/sys/kern/kern_ras.c:237:10, pointer expression with base 0 overflowed to 0xfffffffff7fffffd

[ 293.2523890] cpu1: Begin traceback...
[ 293.2923868] vpanic() at netbsd:vpanic+0x2f2 sys/kern/subr_prf.c:293
[ 293.4023860] Report() at netbsd:Report+0x3b sys/../common/lib/libc/misc/ubsan.c:1352
10:57:58 executing program 0:
r0 = open(&(0x7f0000000040)='./file0\x00', 0x200, 0x0)
r1 = open$dir(&(0x7f0000000000)='./file0\x00', 0xa, 0x0)
writev(r1, &(0x7f0000000340)=[{&(0x7f0000000000), 0x2cfea}], 0x1000000000000013)
r2 = openat(0xffffffffffffffff, &(0x7f00000001c0)='/proc/self/exe\x00', 0x0, 0x0)
mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1, 0x10, r2, 0x0, 0x0)
preadv(r2, &(0x7f0000001580)=[{0x0}], 0x1, 0x0)
mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x3, 0x10, r0, 0x0, 0x0)
r3 = msgget$private(0x0, 0x0)
msgsnd(r3, &(0x7f0000000000)={0x3}, 0x8, 0x0)
msgrcv(r3, &(0x7f0000002440)=ANY=[@ANYBLOB="00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000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0x1008, 0x0, 0x0)
open(&(0x7f0000000040)='./file0\x00', 0x200, 0x0) (async)
open$dir(&(0x7f0000000000)='./file0\x00', 0xa, 0x0) (async)
writev(r1, &(0x7f0000000340)=[{&(0x7f0000000000), 0x2cfea}], 0x1000000000000013) (async)
openat(0xffffffffffffffff, &(0x7f00000001c0)='/proc/self/exe\x00', 0x0, 0x0) (async)
mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1, 0x10, r2, 0x0, 0x0) (async)
preadv(r2, &(0x7f0000001580)=[{0x0}], 0x1, 0x0) (async)
mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x3, 0x10, r0, 0x0, 0x0) (async)
msgget$private(0x0, 0x0) (async)
msgsnd(r3, &(0x7f0000000000)={0x3}, 0x8, 0x0) (async)
msgrcv(r3, &(0x7f0000002440)=ANY=[@ANYBLOB="0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000238be7c5232625caae58c9f8ef2f6bc00a5883001b5bef1cc3517de00c3175ec71c16c4fcdfc3fa1c8c36295b304e9c3c228609059fc82fe9b1bb66d1d6d838d793f3306fbb99c2e29740195893441be0909c9c7432170e7f243c84229aefee485b83a7850664eaf69f06a36489c2012c49064dc36dd951fd63cbd097071eb8db108590f3954febf3d9c6ce5b40aaa180e9febabef41877df36b4f4fd780b97c415cd1e87aa0c2584de9d282354bb5e1151dac72d582125e7fd4bb33158c91085126f98690cd065e55a80bee65eb0061fd6b5847358940f4"], 0x1008, 0x0, 0x0) (async)

[ 293.4923879] HandlePointerOverflow() at netbsd:HandlePointerOverflow+0xd2 sys/../common/lib/libc/misc/ubsan.c:706
[ 293.5623876] sys_rasctl() at netbsd:sys_rasctl+0x621 ras_purge sys/kern/kern_ras.c:237 [inline]
[ 293.5623876] sys_rasctl() at netbsd:sys_rasctl+0x621 sys/kern/kern_ras.c:291
[ 293.6423865] sys___syscall() at netbsd:sys___syscall+0x1e4 sy_call sys/sys/syscallvar.h:65 [inline]
[ 293.6423865] sys___syscall() at netbsd:sys___syscall+0x1e4 sys/kern/sys_syscall.c:90
[ 293.7223865] syscall() at netbsd:syscall+0x2da sy_call sys/sys/syscallvar.h:65 [inline]
[ 293.7223865] syscall() at netbsd:syscall+0x2da sy_invoke sys/sys/syscallvar.h:94 [inline]
[ 293.7223865] syscall() at netbsd:syscall+0x2da sys/arch/x86/x86/syscall.c:138
[ 293.7323897] --- syscall (number 343 via SYS_syscall) ---
[ 293.7623905] netbsd:syscall+0x2da:
[ 293.7623905] cpu1: End traceback...
[ 293.7723876] fatal breakpoint trap in supervisor mode
[ 293.7723876] trap type 1 code 0 rip 0xffffffff80221ab5 cs 0x8 rflags 0x246 cr2 0x78d5f0a0ffa8 ilevel 0 rsp 0xffffd680d5f549a0
[ 293.7823889] curlwp 0xffff865cb0d29900 pid 6200.5702 lowest kstack 0xffffd680d5f502c0
[ 293.7923872] Skipping crash dump on recursive panic
[ 293.7923872] panic: UBSan: Undefined Behavior in /syzkaller/managers/ci2-netbsd-kubsan/kernel/sys/dev/wsfb/genfb.c:988:28, member access within null pointer of type 'struct genfb_private'

[ 293.7923872] cpu1: Begin traceback...
[ 293.7923872] vpanic() at netbsd:vpanic+0x2f2 sys/kern/subr_prf.c:293
[ 293.7923872] Report() at netbsd:Report+0x3b sys/../common/lib/libc/misc/ubsan.c:1352
[ 293.7923872] HandleTypeMismatch() at netbsd:HandleTypeMismatch+0x1fb sys/../common/lib/libc/misc/ubsan.c:429
[ 293.7923872] genfb_enable_polling() at netbsd:genfb_enable_polling+0x17e sys/dev/wsfb/genfb.c:988
[ 293.7923872] x86_genfb_ddb_trap_callback() at netbsd:x86_genfb_ddb_trap_callback+0x39 sys/arch/x86/x86/genfb_machdep.c:97
[ 293.7923872] db_trap() at netbsd:db_trap+0x68 sys/ddb/db_trap.c:73
[ 293.7923872] kdb_trap() at netbsd:kdb_trap+0x1aa sys/arch/amd64/amd64/db_interface.c:251
[ 293.7923872] trap() at netbsd:trap+0x5b2 sys/arch/amd64/amd64/trap.c:315
[ 293.7923872] --- trap (number 1) ---
[ 293.7923872] breakpoint() at netbsd:breakpoint+0x5
[ 293.7923872] db_panic() at netbsd:db_panic+0xec sys/ddb/db_panic.c:69
[ 293.7923872] vpanic() at netbsd:vpanic+0x2f2 sys/kern/subr_prf.c:293
[ 293.7923872] Report() at netbsd:Report+0x3b sys/../common/lib/libc/misc/ubsan.c:1352
[ 293.7923872] HandlePointerOverflow() at netbsd:HandlePointerOverflow+0xd2 sys/../common/lib/libc/misc/ubsan.c:706
[ 293.7923872] sys_rasctl() at netbsd:sys_rasctl+0x621 ras_purge sys/kern/kern_ras.c:237 [inline]
[ 293.7923872] sys_rasctl() at netbsd:sys_rasctl+0x621 sys/kern/kern_ras.c:291
[ 293.7923872] sys___syscall() at netbsd:sys___syscall+0x1e4 sy_call sys/sys/syscallvar.h:65 [inline]
[ 293.7923872] sys___syscall() at netbsd:sys___syscall+0x1e4 sys/kern/sys_syscall.c:90
[ 293.7923872] syscall() at netbsd:syscall+0x2da sy_call sys/sys/syscallvar.h:65 [inline]
[ 293.7923872] syscall() at netbsd:syscall+0x2da sy_invoke sys/sys/syscallvar.h:94 [inline]
[ 293.7923872] syscall() at netbsd:syscall+0x2da sys/arch/x86/x86/syscall.c:138
[ 293.7923872] --- syscall (number 343 via SYS_syscall) ---
[ 293.7923872] netbsd:syscall+0x2da:
[ 293.7923872] cpu1: End traceback...
[ 293.7923872] fatal breakpoint trap in supervisor mode
[ 293.7923872] trap type 1 code 0 rip 0xffffffff80221ab5 cs 0x8 rflags 0x246 cr2 0x78d5f0a0ffa8 ilevel 0x8 rsp 0xffffd680d5f54070
[ 293.7923872] curlwp 0xffff865cb0d29900 pid 6200.5702 lowest kstack 0xffffd680d5f502c0
[ 293.7923872] uvm_fault(0xffff865ca39091a0, 0x0, 1) -> e
[ 293.7923872] fatal page fault in supervisor mode
[ 293.7923872] trap type 6 code 0 rip 0xffffffff830b6b1b cs 0x8 rflags 0x10217 cr2 0x1e8 ilevel 0x8 rsp 0xffffd680d5f53ca0
[ 293.7923872] curlwp 0xffff865cb0d29900 pid 6200.5702 lowest kstack 0xffffd680d5f502c0
kernel: page fault trap, code=0
[ 293.7923872] uvm_fault(0xffff865ca39091a0, 0x0, 1) -> e
[ 293.7923872] fatal page fault in supervisor mode
[ 293.7923872] trap type 6 code 0 rip 0xffffffff830b6b1b cs 0x8 rflags 0x10217 cr2 0x1e8 ilevel 0x8 rsp 0xffffd680d5f538d0
[ 293.7923872] curlwp 0xffff865cb0d29900 pid 6200.5702 lowest kstack 0xffffd680d5f502c0
kernel: page fault trap, code=0
[ 293.7923872] uvm_fault(0xffff865ca39091a0, 0x0, 1) -> e
[ 293.7923872] fatal page fault in supervisor mode
[ 293.7923872] trap type 6 code 0 rip 0xffffffff830b6b1b cs 0x8 rflags 0x10217 cr2 0x1e8 ilevel 0x8 rsp 0xffffd680d5f53500
[ 293.7923872] curlwp 0xffff865cb0d29900 pid 6200.5702 lowest kstack 0xffffd680d5f502c0
kernel: page fault trap, code=0
[ 293.7923872] uvm_fault(0xffff865ca39091a0, 0x0, 1) -> e
[ 293.7923872] fatal page fault in supervisor mode
[ 293.7923872] trap type 6 code 0 rip 0xffffffff830b6b1b cs 0x8 rflags 0x10217 cr2 0x1e8 ilevel 0x8 rsp 0xffffd680d5f53130
[ 293.7923872] curlwp 0xffff865cb0d29900 pid 6200.5702 lowest kstack 0xffffd680d5f502c0
kernel: page fault trap, code=0
[ 293.7923872] uvm_fault(0xffff865ca39091a0, 0x0, 1) -> e
[ 293.7923872] fatal page fault in supervisor mode
[ 293.7923872] trap type 6 code 0 rip 0xffffffff830b6b1b cs 0x8 rflags 0x10217 cr2 0x1e8 ilevel 0x8 rsp 0xffffd680d5f52d60
[ 293.7923872] curlwp 0xffff865cb0d29900 pid 6200.5702 lowest kstack 0xffffd680d5f502c0
kernel: page fault trap, code=0
[ 293.7923872] uvm_fault(0xffff865ca39091a0, 0x0, 1) -> e
[ 293.7923872] fatal page fault in supervisor mode
[ 293.7923872] trap type 6 code 0 rip 0xffffffff830b6b1b cs 0x8 rflags 0x10217 cr2 0x1e8 ilevel 0x8 rsp 0xffffd680d5f52990
[ 293.7923872] curlwp 0xffff865cb0d29900 pid 6200.5702 lowest kstack 0xffffd680d5f502c0
kernel: page fault trap, code=0