panic: kernel diagnostic assertion "refs != ~0" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_synch.c", line 953
Starting stack trace...
panic(ffffffff83390337) at panic+464
__assert(ffffffff833d1747,ffffffff833e1a9d,3b9,ffffffff8340b65d) at __assert+41
refcnt_finalize(ffff80003c4257d0,ffffffff833868b5) at refcnt_finalize+475
pppx_if_destroy(285b98,ffff80003c4257c8) at pppx_if_destroy+61
pppxclose(285b98,1,2000,ffff8000fffee2b0
) at pppxclose+160
spec_close(ffff80003c47ebe0) at spec_close+1047
VOP_CLOSE(fffffd8072135978,1,fffffd80097fb548,ffff8000fffee2b0) at VOP_CLOSE+306
vn_closefile(fffffd805b2b2288,ffff8000fffee2b0) at vn_closefile+299
fdrop(fffffd805b2b2288,ffff8000fffee2b0) at fdrop+289
closef(fffffd805b2b2288,ffff8000fffee2b0) at closef+402
fdfree(ffff8000fffee2b0) at fdfree+278
exit1(ffff8000fffee2b0,0,0,1) at exit1+1398
sys_exit(ffff8000fffee2b0,ffff80003c47ef50,ffff80003c47eea0) at sys_exit+26
syscall(ffff80003c47ef50) at syscall+2839
Xsyscall() at Xsyscall+296
end of kernel
end trace frame: 0x7f0ae7f26d10, count: 242
End of stack trace.
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