On 2020-08-16 22:23, Alexandre Levy wrote:
(kgdb) p *m
$2 = {plinks = {q = {tqe_next = 0x578491b51dd60510, tqe_prev =
0xd78c11bd9dde8518}, s = {ss = {sle_next = 0x578491b51dd60510}}, memguard =
{p = 6306325585301210384,
v = 15531808720989095192}, uma = {slab = 0x578491b51dd60510, zone =
0xd78c11bd9dde8518}}, listq = {tqe_next = 0xd78c11bd9dde8518, tqe_prev =
0x265bc92017d7aa38},
object = 0x2659c92217d5aa3a, pindex = 2758957463725517354, phys_addr =
2758957463725517354, md = {pv_list = {tqh_first = 0x2e49c1321fc5a22a,
tqh_last = 0x3e4bd1300fc7b228},
pv_gen = 265794104, pat_mode = 1046204704}, ref_count = 257405624,
busy_lock = 1054593440, a = {{flags = 4757, queue = 48 '0', act_count = 134
'\206'}, _bits = 2251297429},
order = 98 'b', pool = 204 '\314', flags = 75 'K', oflags = 105 'i',
psind = -107 '\225', segind = 18 '\022', valid = 48 '0', dirty = 134 '\206'}
This "m" structure looks freed.
It looks like a use after free issue.
Can you enter this in GDB:
set print pretty on
Then dump some more structures you can get hold of?
--HPS
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