In the Linux kernel, the following vulnerability has been resolved:
ixgbe: fix unbalanced device enable/disable in suspend/resume
pcidisabledevice() called in _ixgbeshutdown() decreases dev->enablecnt by 1. pcienabledevicemem() which increases dev->enablecnt by 1, was removed from ixgberesume() in commit 6f82b2558735 ("ixgbe: use generic power management"). This caused unbalanced increase/decrease. So add pcienabledevice_mem() back.
Fix the following call trace.
ixgbe 0000:17:00.1: disabling already-disabled device Call Trace: _ixgbeshutdown+0x10a/0x1e0 [ixgbe] ixgbesuspend+0x32/0x70 [ixgbe] pcipmsuspend+0x87/0x160 ? pcipmfreeze+0xd0/0xd0 dpmruncallback+0x42/0x170 _devicesuspend+0x114/0x460 asyncsuspend+0x1f/0xa0 asyncrunentryfn+0x3c/0xf0 processonework+0x1dd/0x410 workerthread+0x34/0x3f0 ? canceldelayedwork+0x90/0x90 kthread+0x14c/0x170 ? kthreadpark+0x90/0x90 retfrom_fork+0x1f/0x30