| b5262077 | 26-Feb-2024 |
Richard Henderson <richard.henderson@linaro.org> |
linux-user/elfload: Lock cpu list and mmap during elf_core_dump
Do not allow changes to the set of cpus and memory regions
while we are dumping core.
Reviewed-by: Alex Bennée <alex.bennee@linaro.or
linux-user/elfload: Lock cpu list and mmap during elf_core_dump
Do not allow changes to the set of cpus and memory regions
while we are dumping core.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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| 106f8da6 | 26-Feb-2024 |
Richard Henderson <richard.henderson@linaro.org> |
linux-user/elfload: Open core file after vma_init
Swap the ordering of vma_init and open. This will be necessary
for further changes, and adjusts the error cleanup path. Narrow
the scope of corefi
linux-user/elfload: Open core file after vma_init
Swap the ordering of vma_init and open. This will be necessary
for further changes, and adjusts the error cleanup path. Narrow
the scope of corefile, as the variable can be freed immediately
after use in open().
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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| ccb6f3ee | 26-Feb-2024 |
Richard Henderson <richard.henderson@linaro.org> |
linux-user/elfload: Latch errno before cleanup in elf_core_dump
On the off-chance that one of the cleanup functions changes
errno, latch the errno that we want to return beforehand.
Flush errno to
linux-user/elfload: Latch errno before cleanup in elf_core_dump
On the off-chance that one of the cleanup functions changes
errno, latch the errno that we want to return beforehand.
Flush errno to 0 upon success, rather than at the beginning.
No need to avoid negation of 0.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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| 0af22a6a | 26-Feb-2024 |
Richard Henderson <richard.henderson@linaro.org> |
linux-user/elfload: Stack allocate struct mm_struct
Ignoring the fact that g_malloc cannot fail, the structure
is quite small and might as well be allocated locally.
Signed-off-by: Richard Henderso
linux-user/elfload: Stack allocate struct mm_struct
Ignoring the fact that g_malloc cannot fail, the structure
is quite small and might as well be allocated locally.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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| 6a202944 | 26-Feb-2024 |
Richard Henderson <richard.henderson@linaro.org> |
linux-user/elfload: Tidy fill_note_info and struct elf_note_info
In fill_note_info, there were unnecessary checks for
success of g_new/g_malloc. But these structures do not
need to be dyamically al
linux-user/elfload: Tidy fill_note_info and struct elf_note_info
In fill_note_info, there were unnecessary checks for
success of g_new/g_malloc. But these structures do not
need to be dyamically allocated at all, and can in fact
be statically allocated within the parent structure.
This removes all error paths from fill_note_info, so
change the return type to void.
Change type of signr to match both caller (elf_core_dump)
and callee (fill_prstatus), which both use int for signr.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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| 6400be01 | 01-Feb-2024 |
Richard Henderson <richard.henderson@linaro.org> |
linux-user/aarch64: Add padding before __kernel_rt_sigreturn
Without this padding, an unwind through the signal handler
will pick up the unwind info for the preceding syscall.
This fixes gcc's 30_t
linux-user/aarch64: Add padding before __kernel_rt_sigreturn
Without this padding, an unwind through the signal handler
will pick up the unwind info for the preceding syscall.
This fixes gcc's 30_threads/thread/native_handle/cancel.cc.
Cc: qemu-stable@nongnu.org
Fixes: ee95fae075c6 ("linux-user/aarch64: Add vdso")
Resolves: https://linaro.atlassian.net/browse/GNU-974
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240202034427.504686-1-richard.henderson@linaro.org>
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| 0ea731db | 20-Jan-2024 |
Thomas Weißschuh <thomas@t-8ch.de> |
linux-user/elfload: check PR_GET_DUMPABLE before creating coredump
A process can opt-out of coredump creation by calling
prctl(PR_SET_DUMPABLE, 0).
linux-user passes this call from the guest through
linux-user/elfload: check PR_GET_DUMPABLE before creating coredump
A process can opt-out of coredump creation by calling
prctl(PR_SET_DUMPABLE, 0).
linux-user passes this call from the guest through to the
operating system.
From there it can be read back again to avoid creating coredumps from
qemu-user itself if the guest chose so.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Thomas Weißschuh <thomas@t-8ch.de>
Message-Id: <20240120-qemu-user-dumpable-v3-2-6aa410c933f1@t-8ch.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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| 3805d428 | 20-Jan-2024 |
Thomas Weißschuh <thomas@t-8ch.de> |
linux-user/elfload: test return value of getrlimit
Should getrlimit() fail the value of dumpsize.rlimit_cur may not be
initialized. Avoid reading garbage data by checking the return value of
getrlim
linux-user/elfload: test return value of getrlimit
Should getrlimit() fail the value of dumpsize.rlimit_cur may not be
initialized. Avoid reading garbage data by checking the return value of
getrlimit.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Thomas Weißschuh <thomas@t-8ch.de>
Message-Id: <20240120-qemu-user-dumpable-v3-1-6aa410c933f1@t-8ch.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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| 1b21fe27 | 12-Jan-2024 |
Richard Henderson <richard.henderson@linaro.org> |
linux-user/riscv: Adjust vdso signal frame cfa offsets
A typo in sizeof_reg put the registers at the wrong offset.
Simplify the expressions to use positive addresses from the
start of uc_mcontext i
linux-user/riscv: Adjust vdso signal frame cfa offsets
A typo in sizeof_reg put the registers at the wrong offset.
Simplify the expressions to use positive addresses from the
start of uc_mcontext instead of negative addresses from the
end of uc_mcontext.
Reported-by: Vineet Gupta <vineetg@rivosinc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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