fridtjof/qemu-cr16
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
qemu-cr16/linux-user
History
Peter Maydell 0db2de22fc linux-user: permit sendto() with NULL buf and 0 len 
If you pass sendto() a NULL buffer, this is usually an error
(causing an EFAULT return); however if you pass a 0 length then
we should not try to validate the buffer provided. Instead we
skip the copying of the user data and possible processing
through fd_trans_target_to_host_data, and call the host syscall
with NULL, 0.

(unlock_user() permits a NULL buffer pointer for "do nothing"
so we don't need to special case the unlock code.)

Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/3102
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20251028142001.3011630-1-peter.maydell@linaro.org>
2025-10-31 12:50:15 +01:00
..
aarch64 linux-user/aarch64: Enable GCS in HWCAP 2025-10-10 13:19:11 +01:00
alpha target/alpha: Simplify call_pal implementation 2025-09-24 10:29:43 -07:00
arm accel/tcg: Add clear_flags argument to page_set_flags 2025-10-14 07:30:39 -07:00
generic linux-user: Move TARGET_SA_RESTORER out of generic/signal.h 2025-02-18 08:29:03 -08:00
hexagon linux-user/hexagon: Use an array for GPRs 2025-10-17 13:45:46 -07:00
hppa accel/tcg: Add clear_flags argument to page_set_flags 2025-10-14 07:30:39 -07:00
i386 linux-user: Populate sigreturn_region_{start,end} in all vdso.S 2025-09-23 16:17:59 -07:00
include linux-user: cleanup unused linux-user/include/host directories 2023-08-08 20:44:08 +02:00
loongarch64 linux-user: Populate sigreturn_region_{start,end} in all vdso.S 2025-09-23 16:17:59 -07:00
m68k bsd-user, linux-user: introduce qemu_process_cpu_events 2025-09-17 19:00:56 +02:00
microblaze linux-user/microblaze: Fix little-endianness binary 2025-10-16 17:07:52 +02:00
mips bsd-user, linux-user: introduce qemu_process_cpu_events 2025-09-17 19:00:56 +02:00
mips64 linux-user: Standardize on ELF_MACHINE not ELF_ARCH 2025-08-30 07:04:04 +10:00
openrisc bsd-user, linux-user: introduce qemu_process_cpu_events 2025-09-17 19:00:56 +02:00
ppc linux-user: Populate sigreturn_region_{start,end} in all vdso.S 2025-09-23 16:17:59 -07:00
riscv linux-user: Populate sigreturn_region_{start,end} in all vdso.S 2025-09-23 16:17:59 -07:00
s390x linux-user: Populate sigreturn_region_{start,end} in all vdso.S 2025-09-23 16:17:59 -07:00
sh4 bsd-user, linux-user: introduce qemu_process_cpu_events 2025-09-17 19:00:56 +02:00
sparc bsd-user, linux-user: introduce qemu_process_cpu_events 2025-09-17 19:00:56 +02:00
x86_64 accel/tcg: Add clear_flags argument to page_set_flags 2025-10-14 07:30:39 -07:00
xtensa bsd-user, linux-user: introduce qemu_process_cpu_events 2025-09-17 19:00:56 +02:00
elfload.c linux-user: Support MADV_DONTDUMP, MADV_DODUMP 2025-10-14 07:30:39 -07:00
errnos.c.inc
exit.c accel/tcg: Move perf and debuginfo support to tcg/ 2024-01-29 21:04:10 +10:00
fd-trans.c linux-user: netlink: Add missing QEMU_IFLA entries 2025-01-24 13:58:40 +01:00
fd-trans.h linux-user: Hold the fd-trans lock across fork 2025-07-10 13:49:03 -06:00
flat.h linux-user/flatload.c: Remove unused bFLT shared-library and ZFLAT code 2024-04-25 10:21:06 +01:00
flatload.c include/exec: Split out mmap-lock.h 2025-04-23 14:08:17 -07:00
gen-vdso-elfn.c.inc linux-user: Create vdso_sigreturn_region_{start,end} 2025-09-23 16:17:59 -07:00
gen-vdso.c linux-user: Create vdso_sigreturn_region_{start,end} 2025-09-23 16:17:59 -07:00
ioctls.h linux-user: Use correct type for FIBMAP and FIGETBSZ emulation 2025-10-29 11:58:55 +03:00
linux_loop.h
linuxload.c linux-user: Create do_init_main_thread 2025-08-28 06:39:25 +10:00
loader.h linux-user: Create vdso_sigreturn_region_{start,end} 2025-09-23 16:17:59 -07:00
main.c linux-user: Add syscall dispatch support 2025-09-23 16:17:59 -07:00
meson.build plugins: fix inclusion of user-mode APIs 2025-07-14 11:42:49 +01:00
mmap.c linux-user: Support MADV_DONTDUMP, MADV_DODUMP 2025-10-14 07:30:39 -07:00
plugin-api.c plugins: fix inclusion of user-mode APIs 2025-07-14 11:42:49 +01:00
qemu.h linux-user/aarch64: Implement prctls for GCS 2025-10-10 13:19:10 +01:00
semihost.c
signal-common.h linux-user: Add syscall dispatch support 2025-09-23 16:17:59 -07:00
signal.c linux-user: Create vdso_sigreturn_region_{start,end} 2025-09-23 16:17:59 -07:00
socket.h
strace.c linux-user: avoid -Werror=int-in-bool-context 2025-09-23 12:17:39 +02:00
strace.h
strace.list linux-user: Add strace for rseq 2025-08-28 07:18:30 +10:00
syscall.c linux-user: permit sendto() with NULL buf and 0 len 2025-10-31 12:50:15 +01:00
syscall_defs.h linux-user: Add syscall dispatch support 2025-09-23 16:17:59 -07:00
syscall_types.h linux-user: Add FITRIM ioctl 2024-04-24 15:46:00 -07:00
thunk.c user: Move 'thunk.h' from 'exec/user' to 'user' 2024-05-03 17:21:20 +02:00
trace-events
trace.h
uaccess.c meson: Make DEBUG_REMAP a meson option 2024-04-24 15:46:00 -07:00
uname.c
uname.h
user-internals.h linux-user: Split out begin_parallel_context 2025-09-24 10:29:43 -07:00
user-mmap.h user: Extract common MMAP API to 'user/mmap.h' 2025-03-09 14:54:32 +01:00
vm86.c linux-user/vm86: Fix compilation with Clang 2024-10-13 10:34:00 -07:00