panic: acquiring blockable sleep lock with spinlock or critical section held (kernel_lock) &kernel_lock
Starting stack trace...
panic(ffffffff8355e62e) at panic+0x1d0 sys/kern/subr_prf.c:229
witness_checkorder(ffffffff83acbf00,9,0) at witness_checkorder+0x11ee sys/kern/subr_witness.c:847
__mp_lock(ffffffff83acb700) at __mp_lock+0xe1 read_rflags sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:212 [inline]
__mp_lock(ffffffff83acb700) at __mp_lock+0xe1 intr_disable sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:233 [inline]
__mp_lock(ffffffff83acb700) at __mp_lock+0xe1 sys/kern/kern_lock.c:168
selwakeup(ffff800001625a90) at selwakeup+0x23 sys/kern/sys_generic.c:836
ptsstart(ffff8000015a5c00) at ptsstart+0x120 ptcwakeup sys/kern/tty_pty.c:391 [inline]
ptsstart(ffff8000015a5c00) at ptsstart+0x120 sys/kern/tty_pty.c:358
tputchar(70,ffff8000015a5c00) at tputchar+0x17b ttstart sys/kern/tty.c:1369 [inline]
tputchar(70,ffff8000015a5c00) at tputchar+0x17b sys/kern/tty.c:2303
kputchar(70,1,0) at kputchar+0x10e sys/kern/subr_prf.c:360
kprintf() at kprintf+0x223 sys/kern/subr_prf.c:723
log(5,ffffffff835275fc) at log+0x1f8 sys/kern/subr_prf.c:292
pf_purge_expired_fragments() at pf_purge_expired_fragments+0x148 sys/net/pf_norm.c:218
pf_purge(0) at pf_purge+0x248 sys/net/pf.c:1986
taskq_thread(ffffffff839b8210) at taskq_thread+0x157 sys/kern/kern_task.c:446
end trace frame: 0x0, count: 245
End of stack trace.
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