[Bug 238333] bhyve random crash in rfb.c on FreeBSD current (after r346011)

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=238333

--- Comment #11 from olevole at olevole.ru ---
(In reply to Mark Johnston from comment #10)

#2  deflate (strm=0x800bb1030, flush=2) at
/usr/src/sys/contrib/zlib/deflate.c:787
787             flush_pending(strm);                                            

(gdb) p *strm                                                                   
$1 = {next_in = 0x941e00000 "", avail_in = 128, total_in = 0, next_out =
0x944c00180 '\245' <repeats 200 times>..., avail_out = 9600016, total_out = 0,
msg = 0x0, state = 0x800bf0800, 
  zalloc = 0x8002d2110 <zcalloc>, zfree = 0x8002d2120 <zcfree>, opaque = 0x0,
data_type = 0, adler = 1, reserved = 0}


(gdb) p *(struct internal_state *)strm->state
$2 = {strm = 0x800bb1030, status = 42, pending_buf = 0xa5a5a5a5a5a5a5a5 <error:
Cannot access memory at address 0xa5a5a5a5a5a5a5a5>, pending_buf_size =
11936128518282651045, 
  pending_out = 0xa5a5a5a5a5a5a5a5 <error: Cannot access memory at address
0xa5a5a5a5a5a5a5a5>, pending = 11936128518282651045, wrap = 1, gzhead = 0x0,
gzindex = 11936128518282651045, method = 165 '\245', 
  last_flush = 2, w_size = 32768, w_bits = 15, w_mask = 32767, window =
0x9433a9140 '\245' <repeats 200 times>..., window_size = 11936128518282651045,
prev = 0x9433ba580, head = 0x9433cb780, 
  ins_h = 2779096485, hash_size = 32768, hash_bits = 15, hash_mask = 32767,
hash_shift = 5, block_start = -6510615555426900571, match_length = 2779096485,
prev_match = 2779096485, 
  match_available = -1515870811, strstart = 2779096485, match_start =
2779096485, lookahead = 2779096485, prev_length = 2779096485, max_chain_length
= 2779096485, max_lazy_match = 2779096485, 
  level = -1515870811, strategy = -1515870811, good_match = 2779096485,
nice_match = -1515870811, dyn_ltree = {{fc = {freq = 42405, code = 42405}, dl =
{dad = 42405, len = 42405}} <repeats 573 times>}, 
  dyn_dtree = {{fc = {freq = 42405, code = 42405}, dl = {dad = 42405, len =
42405}} <repeats 61 times>}, bl_tree = {{fc = {freq = 42405, code = 42405}, dl
= {dad = 42405, len = 42405}} <repeats 39 times>}, 
  l_desc = {dyn_tree = 0xa5a5a5a5a5a5a5a5, max_code = -1515870811, stat_desc =
0xa5a5a5a5a5a5a5a5}, d_desc = {dyn_tree = 0xa5a5a5a5a5a5a5a5, max_code =
-1515870811, stat_desc = 0xa5a5a5a5a5a5a5a5}, bl_desc = {
    dyn_tree = 0xa5a5a5a5a5a5a5a5, max_code = -1515870811, stat_desc =
0xa5a5a5a5a5a5a5a5}, bl_count = {42405 <repeats 16 times>}, heap = {-1515870811
<repeats 573 times>}, heap_len = -1515870811, 
  heap_max = -1515870811, depth = '\245' <repeats 573 times>, l_buf =
0xa5a5a5a5a5a5a5a5 <error: Cannot access memory at address 0xa5a5a5a5a5a5a5a5>,
lit_bufsize = 16384, last_lit = 2779096485, 
  d_buf = 0xa5a5a5a5a5a5a5a5, opt_len = 11936128518282651045, static_len =
11936128518282651045, matches = 2779096485, insert = 2779096485, bi_buf =
42405, bi_valid = -1515870811, high_water = 0}

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