[GH-ISSUE #1792] Bloodborne freezes often when moving around, requiring constant debugger pause/resume #613

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opened 2026-02-27 21:07:14 +03:00 by kerem · 4 comments

kerem commented

2026-02-27 21:07:14 +03:00

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Originally created by @C0rn3j on GitHub (Dec 14, 2024).
Original GitHub issue: https://github.com/shadps4-emu/shadPS4/issues/1792

Issue originally posted in this PR - https://github.com/shadps4-emu/shadPS4/pull/1777

The game keeps freezing (not crashing), and the only way to get it unstuck is to have it launched in a debugger and constantly pause and unpause whenever it happens.

When userfaultfd is enabled, it happens immediately upon entering the character creator.

When it is disabled, it triggers later during loading screens or more often when running around in the game - usually within a minute or less of gameplay.

Full all-thread backtraces from when the game is frozen are available in here - https://github.com/shadps4-emu/shadPS4/pull/1777#issuecomment-2543111947 and here https://github.com/shadps4-emu/shadPS4/pull/1777#issuecomment-2543132430

Log from a build around some Dec 8: shad_log.txt - it happens on a build from today too, though.

Originally created by @C0rn3j on GitHub (Dec 14, 2024). Original GitHub issue: https://github.com/shadps4-emu/shadPS4/issues/1792 Issue originally posted in this PR - https://github.com/shadps4-emu/shadPS4/pull/1777 The game keeps freezing (not crashing), and the only way to get it unstuck is to have it launched in a debugger and constantly pause and unpause whenever it happens. When userfaultfd is enabled, it happens immediately upon entering the character creator. When it is disabled, it triggers later during loading screens or more often when running around in the game - usually within a minute or less of gameplay. Full all-thread backtraces from when the game is frozen are available in here - https://github.com/shadps4-emu/shadPS4/pull/1777#issuecomment-2543111947 and here https://github.com/shadps4-emu/shadPS4/pull/1777#issuecomment-2543132430 Log from a build around some Dec 8: [shad_log.txt](https://github.com/user-attachments/files/18053535/shad_log.txt) - it happens on a build from today too, though.

kerem

2026-02-27 21:07:14 +03:00

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kerem commented

2026-02-27 21:07:15 +03:00

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@Missake212 commented on GitHub (Dec 22, 2024):

Hey, I was wondering if your PR #1777 also "solves" this issue ?

@Missake212 commented on GitHub (Dec 22, 2024): Hey, I was wondering if your PR #1777 also "solves" this issue ?

kerem commented

2026-02-27 21:07:15 +03:00

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@C0rn3j commented on GitHub (Dec 22, 2024):

Nope, it just makes it happen half a minute later.

@C0rn3j commented on GitHub (Dec 22, 2024): Nope, it just makes it happen half a minute later.

kerem commented

2026-02-27 21:07:15 +03:00

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@C0rn3j commented on GitHub (Dec 22, 2024):

Having said that, I tested with latest commits and I couldn't reproduce in 2 minutes, and it was very very consistent before, so maybe it is gone now with the userfd patch + recent patches combined, will try later.

@C0rn3j commented on GitHub (Dec 22, 2024): Having said that, I tested with latest commits and I couldn't reproduce in 2 minutes, and it was very very consistent before, so *maybe* it is gone now with the userfd patch + recent patches combined, will try later.

kerem commented

2026-02-27 21:07:15 +03:00

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@C0rn3j commented on GitHub (Dec 23, 2024):

I cannot repro on github.com/shadps4-emu/shadPS4@43fd8fa44a, I can with -DENABLE_USERFAULTFD=ON

I can repro from an older build I have hanging around github.com/shadps4-emu/shadPS4@e752f04cde and I have two versions, I believe one with userfd patch and one without, and both are capable of failing even on the loading screen from loading a savefile.

So it looks like the userfaultfd is causing freezes, and some other issue which was fixed in the last couple days (I tested somewhat often, so it was probably fixed in the last 24h) was too.

TL;DR there were two issues. Latest master + disabled userfd works, enabled userfd has freezes.

@C0rn3j commented on GitHub (Dec 23, 2024): I cannot repro on https://github.com/shadps4-emu/shadPS4/commit/43fd8fa44a4ea7e8bdfba86106e72e57d7e678d5, I can with `-DENABLE_USERFAULTFD=ON` I can repro from an older build I have hanging around https://github.com/shadps4-emu/shadPS4/commit/e752f04cde25941818e141cc933ffa380cc321e5 and I have two versions, I believe one with userfd patch and one without, and both are capable of failing even on the loading screen from loading a savefile. So it looks like the userfaultfd is causing freezes, and some other issue which was fixed in the last couple days (I tested somewhat often, so it was probably fixed in the last 24h) was too. TL;DR there were two issues. Latest master + disabled userfd works, enabled userfd has freezes.

kerem referenced this issue

2026-02-27 21:13:29 +03:00

[PR #613] [MERGED] shader_recompiler: constant propagation bitwise operations + S_CMPK_EQ_U32 fix #1666