Hi,
I notice following kmemleak warning on 4.14.65 when running blktests
unreferenced object 0xffff88031d34f7c0 (size 240):
comm "kworker/0:1", pid 18344, jiffies 4301519574 (age 3716.610s)
hex dump (first 32 bytes):
01 00 00 00 00 00 00 00 00 51 f9 bc 02 88 ff ff .........Q......
d0 f7 34 1d 03 88 ff ff 00 00 00 00 00 00 00 00 ..4.............
backtrace:
[<ffffffffa56adfc3>] cfq_get_queue+0x213/0x530
[<ffffffffa56b103f>] cfq_set_request+0x43f/0x550
[<ffffffffa5669400>] get_request+0xe20/0xfc0
[<ffffffffa5669691>] blk_get_request+0xf1/0x1a0
[<ffffffffc04032ea>] scsi_execute+0x4a/0x390 [scsi_mod]
[<ffffffffc0403c9b>] scsi_test_unit_ready+0x8b/0x130 [scsi_mod]
[<ffffffffc0344f29>] sd_check_events+0x1c9/0x2e0 [sd_mod]
[<ffffffffa568c7dc>] disk_check_events+0x8c/0x1f0
[<ffffffffa50c31f0>] process_one_work+0x350/0x8e0
[<ffffffffa50c3819>] worker_thread+0x99/0x720
[<ffffffffa50cd173>] kthread+0x1c3/0x210
[<ffffffffa5e001ca>] ret_from_fork+0x3a/0x50
[<ffffffffffffffff>] 0xffffffffffffffff
cfq_get_queue+0x213 point to line 3838 cfqq =
kmem_cache_alloc_node(cfq_pool, in cfq-scheduler.c
Looks we're leaking cfq_queue in some case.
Does anyone see the leak before?
Thanks!
--
Jack Wang
Linux Kernel Developer
ProfitBricks GmbH
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