syzbot

uvm_fault(0xfffffd807ece0000, 0x70, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at      dovutimens+0x368:       movl    0x70(%rax),%r12d
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
* 68812  70071     -1        0x10  0x4000000    0  syz-executor
dovutimens(ffff80002a786010,fffffd806fd12bf8,ffff80002a78d6c0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2771
sys_futimens(ffff80002a786010,ffff80002a78d800,ffff80002a78d750) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2847
syscall(ffff80002a78d800) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a78d800) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x8f97cb446e0, count: 11
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports.  Insufficient info makes it difficult to find and fix bugs.
ddb> 
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
*cpu0: uvm_fault(0xfffffd807ece0000, 0x70, 0, 1) -> e
ddb> trace
dovutimens(ffff80002a786010,fffffd806fd12bf8,ffff80002a78d6c0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2771
sys_futimens(ffff80002a786010,ffff80002a78d800,ffff80002a78d750) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2847
syscall(ffff80002a78d800) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a78d800) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x8f97cb446e0, count: -4
ddb>