PWN-Hunter/android_kernel_xiaomi_sdm845
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[SCSI] mpt2sas: Fix mismatch in mpt2sas_base_hard_reset_handler() mutex lock-unlock

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If ioc->pci_error_recovery is set, goto out in mpt2sas_base_hard_reset_handler()
leads to unlock unheld ioc->reset_in_progress_mutex.

The patch fixes the issue by jumping afer mutex_unlock() call.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Acked-by: "Nandigama, Nagalakshmi" <Nagalakshmi.Nandigama@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Alexey Khoroshilov 2011-08-26 00:36:23 +04:00 committed by James Bottomley
parent 3ec1e88b33
commit 7fbd764881
1 changed files with 2 additions and 1 deletions
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3
drivers/scsi/mpt2sas/mpt2sas_base.c
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@ -4548,7 +4548,7 @@ mpt2sas_base_hard_reset_handler(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
printk(MPT2SAS_ERR_FMT "%s: pci error recovery reset\n",
ioc->name, __func__);
r = 0;
goto out;
goto out_unlocked;
}
if (mpt2sas_fwfault_debug)
@ -4604,6 +4604,7 @@ mpt2sas_base_hard_reset_handler(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
mutex_unlock(&ioc->reset_in_progress_mutex);
out_unlocked:
dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: exit\n", ioc->name,
__func__));
return r;