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linux/drivers/ufs/core
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Joel Slebodnick 135c6eb27a scsi: ufs: core: Free memory allocated for model before reinit 
Under the conditions that a device is to be reinitialized within
ufshcd_probe_hba(), the device must first be fully reset.

Resetting the device should include freeing U8 model (member of dev_info)
but does not, and this causes a memory leak.  ufs_put_device_desc() is
responsible for freeing model.

unreferenced object 0xffff3f63008bee60 (size 32):
  comm "kworker/u33:1", pid 60, jiffies 4294892642
  hex dump (first 32 bytes):
    54 48 47 4a 46 47 54 30 54 32 35 42 41 5a 5a 41  THGJFGT0T25BAZZA
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace (crc ed7ff1a9):
    [<ffffb86705f1243c>] kmemleak_alloc+0x34/0x40
    [<ffffb8670511cee4>] __kmalloc_noprof+0x1e4/0x2fc
    [<ffffb86705c247fc>] ufshcd_read_string_desc+0x94/0x190
    [<ffffb86705c26854>] ufshcd_device_init+0x480/0xdf8
    [<ffffb86705c27b68>] ufshcd_probe_hba+0x3c/0x404
    [<ffffb86705c29264>] ufshcd_async_scan+0x40/0x370
    [<ffffb86704f43e9c>] async_run_entry_fn+0x34/0xe0
    [<ffffb86704f34638>] process_one_work+0x154/0x298
    [<ffffb86704f34a74>] worker_thread+0x2f8/0x408
    [<ffffb86704f3cfa4>] kthread+0x114/0x118
    [<ffffb86704e955a0>] ret_from_fork+0x10/0x20

Fixes: 96a7141da3 ("scsi: ufs: core: Add support for reinitializing the UFS device")
Cc: <stable@vger.kernel.org>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Joel Slebodnick <jslebodn@redhat.com>
Link: https://lore.kernel.org/r/20240613200202.2524194-1-jslebodn@redhat.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2024-06-13 21:00:25 -04:00
..
Kconfig scsi: ufs: core: Remove HPB support 2023-07-23 16:40:39 -04:00
Makefile scsi: ufs: core: Remove HPB support 2023-07-23 16:40:39 -04:00
ufs_bsg.c scsi: bsg: Pass queue_limits to bsg_setup_queue() 2024-04-11 21:37:48 -04:00
ufs_bsg.h
ufs-debugfs.c
ufs-debugfs.h
ufs-fault-injection.c scsi: ufs: core: Make fault injection dynamically configurable per HBA 2023-11-24 19:23:35 -05:00
ufs-fault-injection.h scsi: ufs: core: Make fault injection dynamically configurable per HBA 2023-11-24 19:23:35 -05:00
ufs-hwmon.c scsi: ufs: Rename a function argument 2023-07-31 15:17:50 -04:00
ufs-mcq.c scsi: ufs: mcq: Fix error output and clean up ufshcd_mcq_abort() 2024-05-30 20:40:48 -04:00
ufs-sysfs.c scsi: ufs: core: Add CPU latency QoS support for UFS driver 2024-01-23 21:00:02 -05:00
ufs-sysfs.h
ufshcd-crypto.c scsi: ufs: Ungate the clock synchronously 2023-05-31 11:44:01 -04:00
ufshcd-crypto.h scsi: ufs: Simplify transfer request header initialization 2023-07-31 15:17:51 -04:00
ufshcd-priv.h scsi: ufs: Improve type safety 2023-07-31 15:17:50 -04:00
ufshcd.c scsi: ufs: core: Free memory allocated for model before reinit 2024-06-13 21:00:25 -04:00