qemu/util, branch master

module: Prevent crash by resetting local_err in module_load_qom_all()

2024-08-13T14:35:47Z

Set local_err to NULL after it has been freed in error_report_err(). This avoids triggering assert(*errp == NULL) failure in error_setv() when local_err is reused in the loop. Signed-off-by: Alexander Ivanov Reviewed-by: Claudio Fontana Reviewed-by: Denis V. Lunev Link: https://lore.kernel.org/r/20240809121340.992049-2-alexander.ivanov@virtuozzo.com [Do the same by moving the declaration instead. - Paolo] Cc: qemu-stable@nongnu.org Signed-off-by: Paolo Bonzini

qemu/osdep: Add excluded fd parameter to qemu_close_all_open_fd()

2024-08-04T22:21:59Z

In order for this function to be usable by tap.c code, add a list of file descriptors that should not be closed. Signed-off-by: Clément Léger Message-ID: <20240802145423.3232974-5-cleger@rivosinc.com> [rth: Use max_fd in qemu_close_all_open_fd_close_range] Signed-off-by: Richard Henderson

qemu/osdep: Split qemu_close_all_open_fd() and add fallback

2024-08-04T22:06:08Z

In order to make it cleaner, split qemu_close_all_open_fd() logic into multiple subfunctions (close with close_range(), with /proc/self/fd and fallback). Signed-off-by: Clément Léger Reviewed-by: Richard Henderson Message-ID: <20240802145423.3232974-3-cleger@rivosinc.com> Signed-off-by: Richard Henderson

qemu/osdep: Move close_all_open_fds() to oslib-posix

2024-08-04T22:06:08Z

Move close_all_open_fds() in oslib-posix, rename it qemu_close_all_open_fds() and export it. Signed-off-by: Clément Léger Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Message-ID: <20240802145423.3232974-2-cleger@rivosinc.com> Signed-off-by: Richard Henderson

util/cpuinfo: Make use of elf_aux_info(3) on OpenBSD

2024-07-29T21:59:23Z

Signed-off-by: Brad Smith Message-ID: Signed-off-by: Richard Henderson

util/getauxval: Ensure setting errno if not found

2024-07-29T21:59:23Z

Sometimes zero is a valid value for getauxval (e.g. AT_EXECFD). Make sure that we can distinguish between a valid zero value and a not found entry by setting errno. Assumes that getauxval from sys/auxv.h sets errno correctly. Signed-off-by: Vivian Wang Message-ID: <20240723100545.405476-2-uwu@dram.page> Signed-off-by: Richard Henderson

util/async.c: Forbid negative min/max in aio_context_set_thread_pool_params()

2024-07-25T19:57:38Z

aio_context_set_thread_pool_params() takes two int64_t arguments to set the minimum and maximum number of threads in the pool. We do some bounds checking on these, but we don't catch the case where the inputs are negative. This means that later in the function when we assign these inputs to the AioContext::thread_pool_min and ::thread_pool_max fields, which are of type int, the values might overflow the smaller type. A negative number of threads is meaningless, so make aio_context_set_thread_pool_params() return an error if either min or max are negative. Resolves: Coverity CID 1547605 Signed-off-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daudé Message-id: 20240723150927.1396456-1-peter.maydell@linaro.org Signed-off-by: Stefan Hajnoczi

util/fifo8: Introduce fifo8_drop()

2024-07-23T20:34:54Z

Add the fifo8_drop() helper for clarity. It is a simple wrapper over fifo8_pop_buf(). Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Pierrick Bouvier Reviewed-by: Mark Cave-Ayland Message-Id: <20240722160745.67904-8-philmd@linaro.org>

util/fifo8: Expose fifo8_pop_buf()

2024-07-23T20:34:54Z

Extract fifo8_pop_buf() from hw/scsi/esp.c and expose it as part of the API. This function takes care of non-contiguous (wrapped) FIFO buffer (which is an implementation detail). Suggested-by: Mark Cave-Ayland Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Pierrick Bouvier Reviewed-by: Mark Cave-Ayland Message-Id: <20240722160745.67904-7-philmd@linaro.org>

util/fifo8: Rename fifo8_pop_buf() -> fifo8_pop_bufptr()

2024-07-23T20:34:54Z

Since fifo8_pop_buf() return a const buffer (which points directly into the FIFO backing store). Rename it using the 'bufptr' suffix to better reflect that it is a pointer to the internal buffer that is being returned. This will help differentiate with methods *copying* the FIFO data. Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Pierrick Bouvier Reviewed-by: Mark Cave-Ayland Message-Id: <20240722160745.67904-6-philmd@linaro.org>