login: N  N  panic: timeout_add: to_ticks (-2) < 0
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*298458  16013      0           0  0x4000000    0K syz-executor.0
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:399
panic() at panic+0x174 sys/kern/subr_prf.c:208
timeout_add(ffff80000066d060,fffffffe) at timeout_add+0x194 sys/kern/kern_timeout.c:190
pcppi_bell(ffff80000066d000,1,fffffffe,1) at pcppi_bell+0x2a0 sys/dev/isa/pcppi.c:234
spkrioctl(1b00,20005302,ffff800020c01640,2,ffff800020b42bd0) at spkrioctl+0x230 tone sys/dev/isa/spkr.c:89 [inline]
spkrioctl(1b00,20005302,ffff800020c01640,2,ffff800020b42bd0) at spkrioctl+0x230 sys/dev/isa/spkr.c:503
VOP_IOCTL(fffffd8075ab4708,20005302,ffff800020c01640,2,fffffd807f7c7a20,ffff800020b42bd0) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:290
vn_ioctl(fffffd8068271ad0,20005302,ffff800020c01640,ffff800020b42bd0) at vn_ioctl+0xc9 sys/kern/vfs_vnops.c:512
sys_ioctl(ffff800020b42bd0,ffff800020c01788,ffff800020c01770) at sys_ioctl+0x646
syscall(ffff800020c01820) at syscall+0x5ac mi_syscall sys/sys/syscall_mi.h:99 [inline]
syscall(ffff800020c01820) at syscall+0x5ac sys/arch/amd64/amd64/trap.c:574
Xsyscall(6,0,ffffffffffffff88,0,3,7baaa6d9010) at Xsyscall+0x128
end of kernel
end trace frame: 0x7bd95447860, count: 5
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