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Richard Henderson a4ad4a9d98 linux-user: Handle short reads in mmap_h_gt_g 
In particular, if an image has a large bss, we can hit
EOF before reading all host_len bytes of the mapping.

Create a helper, mmap_pread to handle the job for both
the larger block in mmap_h_gt_g itself, as well as the
smaller block in mmap_frag.

Cc: qemu-stable@nongnu.org
Fixes: eb5027ac61 ("linux-user: Split out mmap_h_gt_g")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2504
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240820050848.165253-2-richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2024-08-21 09:09:46 +10:00
..
aarch64 target/arm: Factor out code for setting MTE TCF0 field 2024-07-05 12:35:14 +01:00
alpha linux-user: Move tswap_siginfo out of target code 2024-03-13 11:43:52 +00:00
arm exec/cpu: Extract page-protection definitions to page-protection.h 2024-05-06 11:17:15 +02:00
cris linux-user: cris: Remove unused struct 'rt_signal_frame' 2024-06-30 19:51:44 +03:00
generic linux-user: Split TARGET_PROT_* out of syscall_defs.h 2023-07-15 08:02:32 +01:00
hexagon Hexagon: add PC alignment check and exception 2024-06-08 17:48:50 -07:00
hppa linux-user/hppa: Force all code addresses to PRIV_USER 2024-05-15 10:03:44 +02:00
i386 target/i386: Pass host pointer and size to cpu_x86_{xsave,xrstor} 2024-05-26 15:49:58 -07:00
include linux-user: cleanup unused linux-user/include/host directories 2023-08-08 20:44:08 +02:00
loongarch64 linux-user: Move tswap_siginfo out of target code 2024-03-13 11:43:52 +00:00
m68k linux-user: Move tswap_siginfo out of target code 2024-03-13 11:43:52 +00:00
microblaze linux-user: Move tswap_siginfo out of target code 2024-03-13 11:43:52 +00:00
mips linux-user/mips: Do not try to use removed R5900 CPU 2024-08-20 00:47:57 +02:00
mips64 linux-user/mips: Select Loongson CPU for Loongson binaries 2024-08-20 00:49:13 +02:00
openrisc linux-user: Move tswap_siginfo out of target code 2024-03-13 11:43:52 +00:00
ppc exec: Move [b]tswapl() declarations to 'exec/user/tswap-target.h' 2024-04-26 17:03:05 +02:00
riscv linux-user: Move tswap_siginfo out of target code 2024-03-13 11:43:52 +00:00
s390x linux-user: Move tswap_siginfo out of target code 2024-03-13 11:43:52 +00:00
sh4 linux-user: Move tswap_siginfo out of target code 2024-03-13 11:43:52 +00:00
sparc linux-user: sparc: Remove unused struct 'target_mc_fq' 2024-06-30 19:51:44 +03:00
x86_64 linux-user/x86_64: Add vdso 2023-10-30 13:41:55 -07:00
xtensa linux-user: Move tswap_siginfo out of target code 2024-03-13 11:43:52 +00:00
cpu_loop-common.h linux-user: Add guest memory layout to exception dump 2022-10-25 09:20:40 +02:00
elfload.c linux-user/elfload: Fix pr_pid values in core files 2024-08-05 08:05:44 +10:00
errnos.c.inc linux-user: Simplify host <-> target errno conversion using macros 2021-07-12 21:53:35 +02:00
exit.c accel/tcg: Move perf and debuginfo support to tcg/ 2024-01-29 21:04:10 +10:00
fd-trans.c linux-user: handle netlink flag NLA_F_NESTED 2023-03-10 20:45:47 +01:00
fd-trans.h linux-user: fix timerfd read endianness conversion 2023-03-10 20:42:00 +01:00
flat.h linux-user/flatload.c: Remove unused bFLT shared-library and ZFLAT code 2024-04-25 10:21:06 +01:00
flatload.c linux-user/flatload.c: Remove unused bFLT shared-library and ZFLAT code 2024-04-25 10:21:06 +01:00
gen-vdso-elfn.c.inc linux-user/ppc: Add vdso 2023-10-30 13:41:56 -07:00
gen-vdso.c linux-user: Add gen-vdso tool 2023-10-30 13:41:55 -07:00
ioctls.h linux-user: Add ioctl for BLKBSZSET 2024-06-05 09:04:30 -07:00
linux_loop.h linux-user: implement more loop ioctls 2021-11-29 14:54:17 +01:00
linuxload.c {linux,bsd}-user: Introduce get_task_state() 2024-03-06 12:35:19 +00:00
loader.h linux-user: Report AArch64 hwcap2 fields above bit 31 2023-11-02 13:36:45 +00:00
main.c linux-user/main: Check errno when getting AT_EXECFD 2024-07-30 07:59:23 +10:00
meson.build linux-user/loongarch64: Add vdso 2023-10-30 13:41:55 -07:00
mmap.c linux-user: Handle short reads in mmap_h_gt_g 2024-08-21 09:09:46 +10:00
qemu.h user: Declare get_task_state() once in 'accel/tcg/vcpu-state.h' 2024-05-06 14:13:45 +02:00
semihost.c semihosting: Remove qemu_semihosting_console_outs 2022-06-28 04:41:20 +05:30
signal-common.h linux-user: Move tswap_siginfo out of target code 2024-03-13 11:43:52 +00:00
signal.c exec/cpu: Extract page-protection definitions to page-protection.h 2024-05-06 11:17:15 +02:00
socket.h
strace.c linux-user: Fix shmat() strace 2024-03-26 18:20:36 -10:00
strace.h linux-user: Have do_syscall() use CPUArchState* instead of void* 2022-05-23 22:47:19 +02:00
strace.list linux-user: Add strace for shmat 2024-03-01 08:05:59 -10:00
syscall_defs.h linux-user: Add FITRIM ioctl 2024-04-24 15:46:00 -07:00
syscall_types.h linux-user: Add FITRIM ioctl 2024-04-24 15:46:00 -07:00
syscall.c linux-user: open_self_stat: Implement num_threads 2024-07-30 07:59:23 +10:00
thunk.c user: Move 'thunk.h' from 'exec/user' to 'user' 2024-05-03 17:21:20 +02:00
trace-events linux-user: Rename user_force_sig tracepoint to match function name 2022-01-18 12:41:42 +01:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
uaccess.c meson: Make DEBUG_REMAP a meson option 2024-04-24 15:46:00 -07:00
uname.c linux-user: Remove pointless CPU{ARCH}State casts 2022-05-23 22:47:20 +02:00
uname.h linux-user: Have do_syscall() use CPUArchState* instead of void* 2022-05-23 22:47:19 +02:00
user-internals.h user: Move 'thunk.h' from 'exec/user' to 'user' 2024-05-03 17:21:20 +02:00
user-mmap.h linux-user: Move shmat and shmdt implementations to mmap.c 2023-09-01 13:35:02 -07:00
vm86.c {linux,bsd}-user: Introduce get_task_state() 2024-03-06 12:35:19 +00:00