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gnif / vendor-reset

Linux kernel vendor specific hardware reset module for sequences that are too complex/complicated to land in pci_quirks.c
GNU General Public License v2.0
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Possible memory leak? #28

Closed YellowOnion closed 3 years ago

YellowOnion commented 3 years ago

I've booted my vm several times and now I'm missing about 10GB of memory...

As you can see by non-cache kernel dynamic memory:

$ smem -tw
Area                           Used      Cache   Noncache 
firmware/hardware                 0          0          0 
kernel image                      0          0          0 
kernel dynamic memory      21184348   11002604   10181744 
userspace memory            2385732     535340    1850392 
free memory                 9295972    9295972          0 
----------------------------------------------------------
                           32866052   20833916   12032136 

$ cat /proc/meminfo 
MemTotal:       32866052 kB
MemFree:         9081332 kB
MemAvailable:   20023604 kB
Buffers:            1000 kB
Cached:         11388500 kB
SwapCached:      1106592 kB
Active:          7499800 kB
Inactive:        7028844 kB
Active(anon):     821200 kB
Inactive(anon):  2479164 kB
Active(file):    6678600 kB
Inactive(file):  4549680 kB
Unevictable:          16 kB
Mlocked:              16 kB
SwapTotal:      16777212 kB
SwapFree:       14428156 kB
Dirty:              1132 kB
Writeback:             0 kB
AnonPages:       2050472 kB
Mapped:           536664 kB
Shmem:            173424 kB
KReclaimable:     161464 kB
Slab:            1219148 kB
SReclaimable:     161464 kB
SUnreclaim:      1057684 kB
KernelStack:       21952 kB
PageTables:        34904 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    33210236 kB
Committed_AS:   10727300 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      724204 kB
VmallocChunk:          0 kB
Percpu:            42496 kB
AnonHugePages:         0 kB
ShmemHugePages:        0 kB
ShmemPmdMapped:        0 kB
FileHugePages:         0 kB
FilePmdMapped:         0 kB
CmaTotal:              0 kB
CmaFree:               0 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
Hugetlb:               0 kB
DirectMap4k:    21471120 kB
DirectMap2M:    11997184 kB
DirectMap1G:           0 kB
gnif commented 3 years ago

This module doesn't allocate more then a few hundred bytes of RAM at a time, it would take thousands of boots to cause a 10GB memory leak if there was indeed one.