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Change History

In the Linux kernel, the following vulnerability has been resolved:

scsi: ufs: Fix a deadlock in the error handler

The following deadlock has been observed on a test setup:

 - All tags allocated

 - The SCSI error handler calls ufshcd_eh_host_reset_handler()

 - ufshcd_eh_host_reset_handler() queues work that calls
   ufshcd_err_handler()

 - ufshcd_err_handler() locks up as follows:

Workqueue: ufs_eh_wq_0 ufshcd_err_handler.cfi_jt
Call trace:
 __switch_to+0x298/0x5d8
 __schedule+0x6cc/0xa94

kernel.org https://git.kernel.org/stable/c/493c9e850677df8b4eda150c2364b1c1a72ed724 [No types assigned]

kernel.org https://git.kernel.org/stable/c/945c3cca05d78351bba29fa65d93834cb7934c7b [No types assigned]

kernel.org https://git.kernel.org/stable/c/d69d98d8edf90e25e4e09930dd36dd6d09dd6768 [No types assigned]