uvm_fault(0xfffffd806bea4a50, 0x8, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at      fifo_write+0x6e:        movq    0x8(%rax),%r15
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
 461178  32046      0           0          0    0  syz-executor
*306720  17235      0           0  0x4000000    1K syz-executor
fifo_write(ffff8000371fba00) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281
VOP_WRITE(fffffd807c9431c0,ffff8000371fba98,8,fffffd807f7d3680) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245
vn_rdwr(1,fffffd807c9431c0,ffff800029fe7c00,fa,0,1,3797052932d5dd77,ffff8000371fbbc0,fffffd807c9431c0,78) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324
ufs_symlink(ffff8000371fbbc0) at ufs_symlink+0x1ee sys/ufs/ufs/ufs_vnops.c:1309
VOP_SYMLINK(fffffd807ca16020,ffff8000371fbd40,ffff8000371fbd70,ffff8000371fbc70,ffff800029fe7c00) at VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432
dosymlinkat(ffff8000371ca2b8,20001340,ffffff9c,20001440) at dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806
syscall(ffff8000371fbef0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff8000371fbef0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xc0293e5350, count: 7
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