Description of problem:
While running regression tests glusterfsd process crashed due to a bit-rot bug.

test script below:
tests/bitrot/bug-1244613.t

This is the backtrace of the core generated.
Thread 1 (Thread 0x7fc834073700 (LWP 130993)):
#0  0x00007fc842e431d7 in raise () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007fc842e448c8 in abort () from /lib64/libc.so.6
No symbol table info available.
#2  0x00007fc842e3c146 in __assert_fail_base () from /lib64/libc.so.6
No symbol table info available.
#3  0x00007fc842e3c1f2 in __assert_fail () from /lib64/libc.so.6
No symbol table info available.
#4  0x00007fc834553a0f in __br_stub_can_trigger_release (inode=0x7fc7f0002208, ctx=0x7fc800014b70, version=0x7fc834072cb0) at /jenkins/workspace/glusterfs-release-6-10.10.117.24/xlators/features/bit-rot/src/stub/bit-rot-stub.h:294
        __PRETTY_FUNCTION__ = "__br_stub_can_trigger_release"
#5  0x00007fc834569229 in br_stub_release (this=0x7fc830010080, fd=0x7fc80c011e58) at /jenkins/workspace/glusterfs-release-6-10.10.117.24/xlators/features/bit-rot/src/stub/bit-rot-stub.c:3428
        ret = 0
        flags = 0
        inode = 0x7fc7f0002208
        releaseversion = 0
        ctx = 0x7fc800014b70
        tmp = 0
        br_stub_fd = 0x7fc8100680a0
        signinfo = 0
        __FUNCTION__ = "br_stub_release"
#6  0x00007fc84484c944 in fd_destroy (fd=0x7fc80c011e58, bound=true) at /jenkins/workspace/glusterfs-release-6-10.10.117.24/libglusterfs/src/fd.c:478
        xl = 0x7fc830010080
        i = 0
        old_THIS = 0x7fc83001df00
        __FUNCTION__ = "fd_destroy"
#7  0x00007fc84484cbb8 in fd_unref (fd=0x7fc80c011e58) at /jenkins/workspace/glusterfs-release-6-10.10.117.24/libglusterfs/src/fd.c:529
        refcount = 0
        bound = true
        __FUNCTION__ = "fd_unref"
#8  0x00007fc8448b4c64 in args_wipe (args=0x7fc80c00a0d0) at /jenkins/workspace/glusterfs-release-6-10.10.117.24/libglusterfs/src/default-args.c:1627
No locals.
#9  0x00007fc84484b1c4 in call_stub_wipe_args (stub=0x7fc80c00a088) at /jenkins/workspace/glusterfs-release-6-10.10.117.24/libglusterfs/src/call-stub.c:2515
No locals.
#10 0x00007fc84484b26e in call_stub_destroy (stub=0x7fc80c00a088) at /jenkins/workspace/glusterfs-release-6-10.10.117.24/libglusterfs/src/call-stub.c:2530
        __FUNCTION__ = "call_stub_destroy"
#11 0x00007fc84484b384 in call_resume (stub=0x7fc80c00a088) at /jenkins/workspace/glusterfs-release-6-10.10.117.24/libglusterfs/src/call-stub.c:2561
        old_THIS = 0x7fc83001df00
        __FUNCTION__ = "call_resume"
#12 0x00007fc82f5909d0 in iot_worker (data=0x7fc830063260) at /jenkins/workspace/glusterfs-release-6-10.10.117.24/xlators/performance/io-threads/src/io-threads.c:232
        conf = 0x7fc830063260
        this = 0x7fc83001df00
        stub = 0x7fc80c00a088
        sleep_till = {tv_sec = 1564137618, tv_nsec = 831503198}
        ret = 0
        pri = 2
        bye = false
        __FUNCTION__ = "iot_worker"
#13 0x00007fc843637dc5 in start_thread () from /lib64/libpthread.so.0

Version-Release number of selected component (if applicable):


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Expected results:


Additional info: