From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: "Ilya Leoshkevich" <iii@linux.ibm.com>,
"Helge Deller" <deller@gmx.de>,
"Philippe Mathieu-Daudé" <philmd@linaro.org>
Subject: [PULL 08/13] linux-user: Emulate the Anonymous: keyword in /proc/self/smaps
Date: Fri, 1 Sep 2023 13:42:46 -0700 [thread overview]
Message-ID: <20230901204251.137307-9-richard.henderson@linaro.org> (raw)
In-Reply-To: <20230901204251.137307-1-richard.henderson@linaro.org>
From: Ilya Leoshkevich <iii@linux.ibm.com>
Core dumps produced by gdb's gcore when connected to qemu's gdbstub
lack stack. The reason is that gdb includes only anonymous memory in
core dumps, which is distinguished by a non-0 Anonymous: value.
Consider the mappings with PAGE_ANON fully anonymous, and the mappings
without it fully non-anonymous.
Tested-by: Helge Deller <deller@gmx.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
[rth: Update for open_self_maps_* rewrite]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
linux-user/syscall.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 0641d8f433..8d96acd085 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -8167,7 +8167,7 @@ static void open_self_maps_4(const struct open_self_maps_data *d,
"Private_Clean: 0 kB\n"
"Private_Dirty: 0 kB\n"
"Referenced: 0 kB\n"
- "Anonymous: 0 kB\n"
+ "Anonymous: %lu kB\n"
"LazyFree: 0 kB\n"
"AnonHugePages: 0 kB\n"
"ShmemPmdMapped: 0 kB\n"
@@ -8180,6 +8180,7 @@ static void open_self_maps_4(const struct open_self_maps_data *d,
"THPeligible: 0\n"
"VmFlags:%s%s%s%s%s%s%s%s\n",
size_kb, page_size_kb, page_size_kb,
+ (flags & PAGE_ANON ? size_kb : 0),
(flags & PAGE_READ) ? " rd" : "",
(flags & PAGE_WRITE_ORG) ? " wr" : "",
(flags & PAGE_EXEC) ? " ex" : "",
--
2.34.1
next prev parent reply other threads:[~2023-09-01 20:45 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-01 20:42 [PULL 00/13] linux-user patch queue Richard Henderson
2023-09-01 20:42 ` [PULL 01/13] linux-user: Split out cpu/target_proc.h Richard Henderson
2023-09-01 20:42 ` [PULL 02/13] linux-user: Emulate /proc/cpuinfo on aarch64 and arm Richard Henderson
2023-09-01 20:42 ` [PULL 03/13] linux-user: Emulate /proc/cpuinfo for Alpha Richard Henderson
2023-09-01 20:42 ` [PULL 04/13] util/selfmap: Use dev_t and ino_t in MapInfo Richard Henderson
2023-09-01 20:42 ` [PULL 05/13] linux-user: Use walk_memory_regions for open_self_maps Richard Henderson
2024-01-26 13:03 ` Richard Purdie
2024-01-26 13:33 ` Michael Tokarev
2024-01-26 13:52 ` Richard Purdie
2024-02-05 3:05 ` Richard Henderson
2024-02-05 11:11 ` Richard Purdie
2024-02-12 20:43 ` Ilya Leoshkevich
2024-02-22 0:14 ` Richard Henderson
2023-09-01 20:42 ` [PULL 06/13] linux-user: Adjust brk for load_bias Richard Henderson
2023-09-01 20:42 ` [PULL 07/13] linux-user: Show heap address in /proc/pid/maps Richard Henderson
2023-09-01 20:42 ` Richard Henderson [this message]
2023-09-01 20:42 ` [PULL 09/13] linux-user: Remove ELF_START_MMAP and image_info.start_mmap Richard Henderson
2023-09-01 20:42 ` [PULL 10/13] linux-user: Move shmat and shmdt implementations to mmap.c Richard Henderson
2023-09-01 20:42 ` [PULL 11/13] linux-user: Use WITH_MMAP_LOCK_GUARD in target_{shmat, shmdt} Richard Henderson
2023-09-01 20:42 ` [PULL 12/13] linux-user: Fix shmdt Richard Henderson
2023-09-01 20:42 ` [PULL 13/13] linux-user: Track shm regions with an interval tree Richard Henderson
2023-09-06 18:24 ` [PULL 00/13] linux-user patch queue Stefan Hajnoczi
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