panic: kernel diagnostic assertion "cpipe->pipe_buffer.cnt == 0" failed: file "/syzkaller/managers/main/kernel/sys/kern/sys_pipe.c", line 223
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*  3479   1553      0           0  0x4000000    0  syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:212
__assert(ffffffff81f8ad79,ffffffff81f99791,df,ffffffff81f2c9d6) at __assert+0x2e sys/kern/subr_prf.c:159
pipespace(fffffd80362ac778,10000) at pipespace+0x16f sys/kern/sys_pipe.c:219
pipe_write(fffffd803471fe20,ffff800015a0acd8,0) at pipe_write+0x952 sys/kern/sys_pipe.c:472
dofilewritev(ffff8000ffff33d8,4,ffff800015a0acd8,0,ffff800015a0ade0) at dofilewritev+0x1ac sys/kern/sys_generic.c:364
sys_write(ffff8000ffff33d8,ffff800015a0ad78,ffff800015a0ade0) at sys_write+0x83 sys/kern/sys_generic.c:284
syscall(ffff800015a0ae40) at syscall+0x508
Xsyscall(6,0,c,0,3,b49d94261b0) at Xsyscall+0x128
end of kernel
end trace frame: 0xb4c7b7d74a0, count: 6
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