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This will allow us to mutate the image size.
Fixes #3527
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Update seeds to account for the new pseudo-syscall prototype and the new
compressed Base64 syntax. This reduces `syz-imagegen` seed image space
requirements from 127 MB to 43 MB (measured using `du -ch syz_mount_image_*`).
Note that some filesystems are pathological for deflate, e.g. for `f2fs`
seed image space has increased from 320 KB to 2.1 MB. This discrepancy
should not be observed in corpuses after performing various filesystem
operations and image mutations - the previous ad-hoc compression is
highly efficient for near-empty images, but once images are modified deflate
should surpass it.
Tools/versions used are as in google@0d24140 and google@356d821.
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Add the missing boolean argument for changing directory to
`syz_mount_image` calls which are not generated by `syz-imagegen`. Set
it to false to ensure behaviour is as before.
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String value enforcement broke a number of tests
where we use different values.
Be more string as to what string values we use in tests.
Required to add tmpfs descriptions to test syz_mount_image.
Also special-casing AF_ALG algorithms as these are auto-generated.
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1. It always crashed in cover_reset when coverage is disabled.
2. Use NONFAILING when accessing image segments.
3. Give it additional 100 ms as it may be slow.
4. Add a test for syz_mount_image.
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