uvm_fault(0xfffffd80699283b8, 0x7, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at      witness_checkorder+0x1ec:       movl    0x8(%r14),%ebx
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*248378   1288      0           0        0x1    0K syz-executor.6
 158820  44205      0     0x14000      0x200    1  reaper
witness_checkorder(fffffd806f9e75e8,9,0) at witness_checkorder+0x1ec sys/kern/subr_witness.c:794
rw_enter(fffffd806f9e75d8,1) at rw_enter+0xd5 sys/kern/kern_rwlock.c:249
rwsleep(fffffd806f9e7718,fffffd806f9e75d8,118,ffffffff82818a90,0) at rwsleep+0xd6 sys/kern/kern_synch.c:303
sosend(fffffd806f9e75d0,0,ffff80002a56f768,0,0,0) at sosend+0x76b sys/kern/uipc_socket.c:623
fifo_write(ffff80002a56f6b0) at fifo_write+0x80 sys/miscfs/fifofs/fifo_vnops.c:279
VOP_WRITE(fffffd806e489bd8,ffff80002a56f768,3,fffffd807f7d7478) at VOP_WRITE+0xc3 sys/kern/vfs_vops.c:245
ktrwriteraw(ffff800021224800,fffffd806e489bd8,fffffd807f7d7478,ffff80002a56f830,ffff80002a56f810) at ktrwriteraw+0x16c sys/kern/kern_ktrace.c:664
ktrstruct(ffff800021224800,ffffffff8286bc80,ffff80002a56f910,10) at ktrstruct+0x15c ktrwrite2 sys/kern/kern_ktrace.c:627 [inline]
ktrstruct(ffff800021224800,ffffffff8286bc80,ffff80002a56f910,10) at ktrstruct+0x15c sys/kern/kern_ktrace.c:308
sys_sigaction(ffff800021224800,ffff80002a56f980,ffff80002a56f9d0) at sys_sigaction+0x434 sys/kern/kern_sig.c:314
syscall(ffff80002a56fa50) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff80002a56fa50) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x71fb5b368930, count: 4
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