uvm_fault(0xffffffff83899a28, 0xffff800029793980, 0, 2) -> d
kernel: page fault trap, code=2
Stopped at      memset+0x52:    repe stosq      %es:(%rdi)
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
 119257  42547      0           0          0    0  syz-executor
memset() at memset+0x52
ffs_write(ffff80002a41c4e0) at ffs_write+0xbab sys/ufs/ffs/ffs_vnops.c:401
VOP_WRITE(fffffd805f184018,ffff80002a41c578,23,fffffd807f7d2618) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245
vn_rdwr(1,fffffd805f184018,ffff80002a41c690,40,0,1,e9ca2b3c6aba0559,0,10000a,0) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324
acct_process(ffff800031ca2cf8) at acct_process+0x7bb sys/kern/kern_acct.c:245
exit1(ffff800031ca2cf8,0,0,1) at exit1+0x5dd sys/kern/kern_exit.c:229
sys_exit(ffff800031ca2cf8,ffff80002a41c8d0,ffff80002a41c820) at sys_exit+0x1a
syscall(ffff80002a41c8d0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a41c8d0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x74e443046e70, count: 6
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