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rocallahan

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Commits on Feb 22, 2023

• Ensure that sys_rseq and sys_set_robust_list call start_commit_buffered_syscall after prep_syscall

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Commits on Feb 20, 2023

• Make Task and Session subclasses final

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• Add 'final' in a couple of places to avoid clang++ warnings

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Commits on Feb 13, 2023

• Record only the modified part of epoll_wait's event array

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• Drain any non-received messages from the socket before writing new messages, instead of draining in response to detecting dead tracees.

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• Simply replay syscallbuf initialization slightly

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Commits on Jan 31, 2023

• Make Session::create_shared_map choose the mapping address in the tracee in all cases.

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• Remove unnecessary use of rvalue references.

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Commits on Jan 29, 2023

• Remove unnecessary close --- the ScopedFd destructor will take care of it

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Commits on Jan 28, 2023

• rrcall_init_buffers can only be called if syscallbuf is enabled, so make this an assertion

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• Explain 'privileged' syscalls

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• Add comment explaining the difference between privileged_unrecorded_syscall and privileged_untraced_syscall

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Commits on Jan 15, 2023

• Remove 'partial thread locals' optimization

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Commits on Jan 14, 2023

• Add syscall buffering for rseq

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• Add syscall hook for syscalls followed by 'cmp $-4096,%eax'

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• Use default parameter (trivial cleanup)

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• x86/rdtsc_loop2-32 times out because it's compiled to a code pattern syscallbuf can't patch

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• Implement syscall buffering of set_robust_list

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Commits on Jan 13, 2023

• Add syscall buffering for prctl PR_SET_NAME

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• Use pidfd_getfd for AutoRemoteSyscalls::retrieve_fd when possible

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• Add syscallbuf hook for 'lea 0x8f0(%rbx),%rsi' before syscall

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• Add syscallbuf hook for 'mov $0x111,%eax' before syscall

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• Add syscallbuf hook for syscall followed by 'mov 0x28(%r12),%rax'

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• Add syscallbuf hook for 'mov $0xe,%eax' before syscall

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• Add syscall buffering for sigaltstack

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Commits on Dec 30, 2022

• Implement syscall buffering of RDTSC preceded by 'mov %rsp,%rbp'

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Commits on Dec 29, 2022

• Add syscall buffering for 'uname'

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Commits on Dec 22, 2022

• Do our best to make librrpreload work when built with glibc >= 2.34 but loaded into a process linking to glibc < 2.34.

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Commits on Dec 4, 2022

• Make 'rr traceinfo' work without starting performance counters

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Commits on Nov 9, 2022

• Remove unused stream operators from CompressedReader/CompressedWriter

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Commits on Nov 2, 2022

• Completely rework AddressSpace::chaos_mode_find_free_memory so it searches systematically through the address space and returns nullptr to indicate its caller should raise ENOMEM.

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Commits on Oct 21, 2022

• Don't hang forever trying to find a good random address for chaos mode memory allocation when we're really out of space.

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• Fix debug build

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Commits on Oct 17, 2022

• Add missing test file

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Commits on Oct 15, 2022

• Save ExtraRegisters for SIGNAL events and during async signal replay,

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