[bug report] kmemleak observed during nvme connect with host authentication and invalid ctrl key(blktests nvme/044)

[Yi Zhang]

Hi
The kmemleak was triggered from Step 4 in nvme/044, please help check
it and let me know if you need any info/test for it, thanks.

blktests: ./check nvme/044
        # Step 4: Connect with host authentication
        # and invalid ctrl key
        echo "Test invalid ctrl key (should fail)"
        invkey="DHHC-1:00:Jc/My1o0qtLCWRp+sHhAVafdfaS7YQOMYhk9zSmlatobqB8C:"
        _nvme_connect_subsys --dhchap-secret "${hostkey}" \
                             --dhchap-ctrl-secret "${invkey}"

        _nvme_disconnect_subsys

dmesg:
[ 1624.248073] run blktests nvme/044 at 2024-05-11 05:59:21
[ 1624.842961] nvmet: adding nsid 1 to subsystem blktests-subsystem-1
[ 1625.165556] key crc mismatch (key 021fa81b, crc e08833d2)

kmemleak:
unreferenced object 0xffff88a89a0fa800 (size 512):
  comm "nvme", pid 21764, jiffies 4298599713
  hex dump (first 32 bytes):
    00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00  .....N..........
    ff ff ff ff ff ff ff ff 20 29 32 bc ff ff ff ff  ........ )2.....
  backtrace (crc 5582e1c1):
    [<00000000e6877e1c>] kmalloc_trace+0x338/0x420
    [<00000000074bbdf4>] device_add+0xb09/0x1760
    [<00000000a4cc674f>] cdev_device_add+0xf7/0x230
    [<00000000903919a1>] nvme_init_ctrl+0xc65/0x1220 [nvme_core]
    [<00000000f315c00e>]
__kstrtab_nvme_keyring_id+0x1/0xfffffffffff4b654 [nvme_keyring]
    [<00000000e20dd92c>] 0xffffffffc1d3c760
    [<0000000077b20bbe>] vfs_write+0x20e/0x1010
    [<00000000986b0494>] ksys_write+0xfb/0x1d0
    [<000000008207ad01>] do_syscall_64+0x97/0x190
    [<00000000888f4e53>] entry_SYSCALL_64_after_hwframe+0x76/0x7e
unreferenced object 0xffff88a8b2df4400 (size 512):
  comm "nvme", pid 30780, jiffies 4303376974
  hex dump (first 32 bytes):
    00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00  .....N..........
    ff ff ff ff ff ff ff ff 20 29 32 bc ff ff ff ff  ........ )2.....
  backtrace (crc 2990f85a):
    [<00000000e6877e1c>] kmalloc_trace+0x338/0x420
    [<00000000074bbdf4>] device_add+0xb09/0x1760
    [<00000000a4cc674f>] cdev_device_add+0xf7/0x230
    [<00000000903919a1>] nvme_init_ctrl+0xc65/0x1220 [nvme_core]
    [<000000004d96fd53>] 0xffffffffc1d6457f
    [<000000009aeccf81>] 0xffffffffc1d35760
    [<0000000077b20bbe>] vfs_write+0x20e/0x1010
    [<00000000986b0494>] ksys_write+0xfb/0x1d0
    [<000000008207ad01>] do_syscall_64+0x97/0x190
    [<00000000888f4e53>] entry_SYSCALL_64_after_hwframe+0x76/0x7e

-- 
Best Regards,
  Yi Zhang