Optimize save_path_to_str_buf in tracee.bpf.c #758
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Since the large loop gets unrolled, the various variable allocations caused programs to exceed the stack limit. Signed-off-by: grantseltzer <grantseltzer@gmail.com>
yanivagman
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Jun 9, 2021
tracee-ebpf/tracee/tracee.bpf.c
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| struct mount *mnt_p = real_mount(vfsmnt); | ||
| struct mount mnt; | ||
| bpf_probe_read(&mnt, sizeof(struct mount), mnt_p); | ||
| bpf_probe_read(&mnt_mountpoint_p, sizeof(struct dentry*), &mnt_p->mnt_mountpoint); |
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We read into this variable but it never gets used. Do we really need it?
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You're right :-)
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Since the large loop gets unrolled, the various variable
allocations caused programs to exceed the stack limit.
Signed-off-by: grantseltzer grantseltzer@gmail.com