"Segmentation Fault: 11" on MacOS when "-rescan" large (1 GB) wallet.dat #20604

issue decryp2kanon opened this issue on December 8, 2020

decryp2kanon commented at 5:57 PM on December 8, 2020: contributor
Its a custom testnet based on v0.21.0rc1 But I couldn't test on real bitcoin, because I do not have such large BTC wallet.dat. I may test on regtest soon.
- Reproduce Run bitcoind with -rescan large wallet.dat (~1 GB mining wallet).
Strange thing is Linux64 is just fine, but MacOS and Win10 this error.
- MacOS
```
Segmentation Fault: 11
```
- Win10: Similar behavier like MacOS, but daemon just killed. No Segfault or any error log.
- FYI: Win10 2cpu 4096ram MacOS (High Sierra 10.13.3) 2cpu 4096ram (Macbook Air 13 Inch 2011)
- Related Issues bitcoin/bitcoin#4607 bitcoin/bitcoin#12318 bitcoin/bitcoin#9816
MarcoFalke commented at 6:09 PM on December 8, 2020: member

So this is self-compiled?

Is it an OOM?
decryp2kanon renamed this:
~~"Segmentation Fault: 11" on MacOS and Win10 when "-rescan"~~
"Segmentation Fault: 11" on MacOS when "-rescan"
on Dec 8, 2020
decryp2kanon commented at 6:11 PM on December 8, 2020: contributor

So this is self-compiled?

Its own gitian release
decryp2kanon commented at 6:14 PM on December 8, 2020: contributor

Is it an OOM?

Possibly. But I do not see Out-Of-Memory message. Win10 is 2cpu4096ram. MacOS is 2cpu4096ram (Macbook Air 2011)
sipa commented at 6:16 PM on December 8, 2020: member

I'm surprised loading a 1 GB wallet file works at all with that amount of memory...
MarcoFalke added the label Questions and Help on Dec 8, 2020
decryp2kanon commented at 6:19 PM on December 8, 2020: contributor

I'm surprised loading a 1 GB wallet file works at all with that amount of memory...

Do you mean, is this just OOM?
sipa commented at 6:21 PM on December 8, 2020: member

Do you mean, is this just OOM?

Yes, I assume so. Wallets are loaded entirely into memory, and the in-memory representation is often several times larger than the on-disk serialization.
decryp2kanon commented at 6:24 PM on December 8, 2020: contributor

often several times larger than the on-disk serialization.

How much RAM do I need if I wanna load 1GB wallet.dat?
decryp2kanon commented at 7:16 PM on December 8, 2020: contributor

Since its not a bitcoin issue, anyway I closing this for now.
decryp2kanon closed this on Dec 8, 2020
decryp2kanon renamed this:
~~"Segmentation Fault: 11" on MacOS when "-rescan"~~
"Segmentation Fault: 11" on MacOS when "-rescan" large (1 GB) wallet.dat
on Dec 8, 2020
DrahtBot locked this on Feb 15, 2022

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