* [PATCH v1 bpf 0/2] bpf: tcp: Fix type confusion in bpf_tcp_sock().
@ 2026-04-30 18:43 Kuniyuki Iwashima
2026-04-30 18:43 ` [PATCH v1 bpf 1/2] " Kuniyuki Iwashima
2026-04-30 18:43 ` [PATCH v1 bpf 2/2] selftest: bpf: Add test for bpf_tcp_sock() and RAW socket Kuniyuki Iwashima
0 siblings, 2 replies; 6+ messages in thread
From: Kuniyuki Iwashima @ 2026-04-30 18:43 UTC (permalink / raw)
To: Martin KaFai Lau, Daniel Borkmann, Alexei Starovoitov,
Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi
Cc: John Fastabend, Stanislav Fomichev, Song Liu, Yonghong Song,
Jiri Olsa, Eric Dumazet, Kuniyuki Iwashima, Kuniyuki Iwashima,
bpf, netdev
bpf_tcp_sock() only check if sk->sk_protocol is IPPROTO_TCP,
but RAW socket can bypass it:
socket(AF_INET, SOCK_RAW, IPPROTO_TCP)
Patch 1 fixes it and Patch 2 adds a test.
Kuniyuki Iwashima (2):
bpf: tcp: Fix type confusion in bpf_tcp_sock().
selftest: bpf: Add test for bpf_tcp_sock() and RAW socket.
net/core/filter.c | 2 +-
.../selftests/bpf/prog_tests/sockopt_sk.c | 17 ++++++++++++++++-
tools/testing/selftests/bpf/progs/sockopt_sk.c | 16 ++++++++++++++++
3 files changed, 33 insertions(+), 2 deletions(-)
--
2.54.0.545.g6539524ca2-goog
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v1 bpf 1/2] bpf: tcp: Fix type confusion in bpf_tcp_sock().
2026-04-30 18:43 [PATCH v1 bpf 0/2] bpf: tcp: Fix type confusion in bpf_tcp_sock() Kuniyuki Iwashima
@ 2026-04-30 18:43 ` Kuniyuki Iwashima
2026-04-30 21:00 ` Daniel Borkmann
2026-04-30 18:43 ` [PATCH v1 bpf 2/2] selftest: bpf: Add test for bpf_tcp_sock() and RAW socket Kuniyuki Iwashima
1 sibling, 1 reply; 6+ messages in thread
From: Kuniyuki Iwashima @ 2026-04-30 18:43 UTC (permalink / raw)
To: Martin KaFai Lau, Daniel Borkmann, Alexei Starovoitov,
Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi
Cc: John Fastabend, Stanislav Fomichev, Song Liu, Yonghong Song,
Jiri Olsa, Eric Dumazet, Kuniyuki Iwashima, Kuniyuki Iwashima,
bpf, netdev, Damiano Melotti
bpf_tcp_sock() only check if sk->sk_protocol is IPPROTO_TCP,
but RAW socket can bypass it:
socket(AF_INET, SOCK_RAW, IPPROTO_TCP)
Calling bpf_setsockopt() in SOCKOPT prog triggers out-of-bounds
access to another slab object. [0]
Let's use sk_is_tcp().
[0]:
BUG: KASAN: slab-out-of-bounds in sol_tcp_sockopt (net/core/filter.c:5519)
Read of size 8 at addr ffff88801083d760 by task test_progs/1259
CPU: 1 UID: 0 PID: 1259 Comm: test_progs Tainted: G OE 7.0.0-11175-gb5c111f4967b #1 PREEMPT(full)
Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-debian-1.17.0-1 04/01/2014
Call Trace:
<TASK>
dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
print_report (mm/kasan/report.c:378 mm/kasan/report.c:482)
kasan_report (mm/kasan/report.c:595)
sol_tcp_sockopt (net/core/filter.c:5519)
__bpf_getsockopt (net/core/filter.c:5633)
bpf_sk_getsockopt (net/core/filter.c:5654)
bpf_prog_629ba00a1601e9f2__setsockopt+0x86/0x22c
__cgroup_bpf_run_filter_setsockopt (./include/linux/bpf.h:1402 ./include/linux/filter.h:722 ./include/linux/filter.h:729 kernel/bpf/cgroup.c:81 kernel/bpf/cgroup.c:2026)
do_sock_setsockopt (net/socket.c:2363)
__x64_sys_setsockopt (net/socket.c:2406)
do_syscall_64 (arch/x86/entry/syscall_64.c:63)
entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
RIP: 0033:0x7f85f82fe7de
Code: 55 48 63 c9 48 63 ff 45 89 c9 48 89 e5 48 83 ec 08 6a 2c e8 34 69 f7 ff c9 c3 66 90 f3 0f 1e fa 49 89 ca b8 36 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 0a c3 66 0f 1f 84 00 00 00 00 00 48 8b 15 e1
RSP: 002b:00007ffe59dcecd8 EFLAGS: 00000202 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f85f82fe7de
RDX: 000000000000001c RSI: 0000000000000006 RDI: 000000000000000d
RBP: 00007ffe59dcef20 R08: 000000000000003c R09: 0000000000000000
R10: 00007ffe59dcef00 R11: 0000000000000202 R12: 00007ffe59dcf268
R13: 0000000000000003 R14: 00007f85f9da5000 R15: 000055b2f3201400
</TASK>
The buggy address belongs to the object at ffff88801083d280
which belongs to the cache RAW of size 1792
The buggy address is located 1248 bytes inside of
allocated 1792-byte region [ffff88801083d280, ffff88801083d980)
Fixes: 655a51e536c0 ("bpf: Add struct bpf_tcp_sock and BPF_FUNC_tcp_sock")
Reported-by: Damiano Melotti <melotti@google.com>
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
---
net/core/filter.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/core/filter.c b/net/core/filter.c
index bc96c18df4e0..cd88633f8dc1 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -7475,7 +7475,7 @@ u32 bpf_tcp_sock_convert_ctx_access(enum bpf_access_type type,
BPF_CALL_1(bpf_tcp_sock, struct sock *, sk)
{
- if (sk_fullsock(sk) && sk->sk_protocol == IPPROTO_TCP)
+ if (sk_fullsock(sk) && sk_is_tcp(sk))
return (unsigned long)sk;
return (unsigned long)NULL;
--
2.54.0.545.g6539524ca2-goog
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH v1 bpf 2/2] selftest: bpf: Add test for bpf_tcp_sock() and RAW socket.
2026-04-30 18:43 [PATCH v1 bpf 0/2] bpf: tcp: Fix type confusion in bpf_tcp_sock() Kuniyuki Iwashima
2026-04-30 18:43 ` [PATCH v1 bpf 1/2] " Kuniyuki Iwashima
@ 2026-04-30 18:43 ` Kuniyuki Iwashima
2026-04-30 20:32 ` Kuniyuki Iwashima
1 sibling, 1 reply; 6+ messages in thread
From: Kuniyuki Iwashima @ 2026-04-30 18:43 UTC (permalink / raw)
To: Martin KaFai Lau, Daniel Borkmann, Alexei Starovoitov,
Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi
Cc: John Fastabend, Stanislav Fomichev, Song Liu, Yonghong Song,
Jiri Olsa, Eric Dumazet, Kuniyuki Iwashima, Kuniyuki Iwashima,
bpf, netdev
Let's extend sockopt_sk.c to cover bpf_tcp_sock() for the
wrong socket type.
Before:
# ./test_progs -t sockopt_sk
[ 151.948613] ==================================================================
[ 151.951376] BUG: KASAN: slab-out-of-bounds in sol_tcp_sockopt+0xc7/0x8e0
[ 151.954159] Read of size 8 at addr ffff88801083d760 by task test_progs/1259
...
run_test:FAIL:getsetsockopt unexpected error: -1 (errno 22)
#427 sockopt_sk:FAIL
After:
#427 sockopt_sk:OK
While at it, missing free() is fixed up.
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
---
.../selftests/bpf/prog_tests/sockopt_sk.c | 17 ++++++++++++++++-
tools/testing/selftests/bpf/progs/sockopt_sk.c | 16 ++++++++++++++++
2 files changed, 32 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/bpf/prog_tests/sockopt_sk.c b/tools/testing/selftests/bpf/prog_tests/sockopt_sk.c
index 53637431ec5d..87e771c8991f 100644
--- a/tools/testing/selftests/bpf/prog_tests/sockopt_sk.c
+++ b/tools/testing/selftests/bpf/prog_tests/sockopt_sk.c
@@ -190,7 +190,7 @@ static int getsetsockopt(void)
fd = socket(AF_NETLINK, SOCK_RAW, 0);
if (fd < 0) {
log_err("Failed to create AF_NETLINK socket");
- return -1;
+ goto err;
}
buf.u32 = 1;
@@ -211,6 +211,21 @@ static int getsetsockopt(void)
}
ASSERT_EQ(optlen, 8, "Unexpected NETLINK_LIST_MEMBERSHIPS value");
+ /* Trick bpf_tcp_sock() with IPPROTO_TCP */
+ close(fd);
+ fd = socket(AF_INET, SOCK_RAW, IPPROTO_TCP);
+ if (fd < 0) {
+ log_err("Failed to create RAW socket");
+ goto err;
+ }
+
+ optlen = 60;
+ err = setsockopt(fd, SOL_TCP, TCP_SAVED_SYN, &buf, optlen);
+ if (err) {
+ log_err("Unexpected setsockopt(TCP_SAVED_SYN)");
+ goto err;
+ }
+
free(big_buf);
close(fd);
return 0;
diff --git a/tools/testing/selftests/bpf/progs/sockopt_sk.c b/tools/testing/selftests/bpf/progs/sockopt_sk.c
index cb990a7d3d45..5e0b27e7855c 100644
--- a/tools/testing/selftests/bpf/progs/sockopt_sk.c
+++ b/tools/testing/selftests/bpf/progs/sockopt_sk.c
@@ -149,6 +149,20 @@ int _setsockopt(struct bpf_sockopt *ctx)
if (sk && sk->family == AF_NETLINK)
goto out;
+ if (sk && sk->family == AF_INET && sk->type == SOCK_RAW) {
+ struct bpf_tcp_sock *tp = bpf_tcp_sock(sk);
+
+ if (tp) {
+ char saved_syn[60];
+
+ bpf_getsockopt(sk, SOL_TCP, TCP_SAVED_SYN,
+ &saved_syn, sizeof(saved_syn));
+ goto consumed;
+ }
+
+ goto out;
+ }
+
/* Make sure bpf_get_netns_cookie is callable.
*/
if (bpf_get_netns_cookie(NULL) == 0)
@@ -224,6 +238,8 @@ int _setsockopt(struct bpf_sockopt *ctx)
return 0; /* couldn't get sk storage */
storage->val = optval[0];
+
+consumed:
ctx->optlen = -1; /* BPF has consumed this option, don't call kernel
* setsockopt handler.
*/
--
2.54.0.545.g6539524ca2-goog
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH v1 bpf 2/2] selftest: bpf: Add test for bpf_tcp_sock() and RAW socket.
2026-04-30 18:43 ` [PATCH v1 bpf 2/2] selftest: bpf: Add test for bpf_tcp_sock() and RAW socket Kuniyuki Iwashima
@ 2026-04-30 20:32 ` Kuniyuki Iwashima
2026-04-30 21:14 ` Kuniyuki Iwashima
0 siblings, 1 reply; 6+ messages in thread
From: Kuniyuki Iwashima @ 2026-04-30 20:32 UTC (permalink / raw)
To: Martin KaFai Lau, Daniel Borkmann, Alexei Starovoitov,
Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi
Cc: John Fastabend, Stanislav Fomichev, Song Liu, Yonghong Song,
Jiri Olsa, Eric Dumazet, Kuniyuki Iwashima, bpf, netdev
On Thu, Apr 30, 2026 at 11:44 AM Kuniyuki Iwashima <kuniyu@google.com> wrote:
>
> Let's extend sockopt_sk.c to cover bpf_tcp_sock() for the
> wrong socket type.
>
> Before:
> # ./test_progs -t sockopt_sk
> [ 151.948613] ==================================================================
> [ 151.951376] BUG: KASAN: slab-out-of-bounds in sol_tcp_sockopt+0xc7/0x8e0
> [ 151.954159] Read of size 8 at addr ffff88801083d760 by task test_progs/1259
> ...
> run_test:FAIL:getsetsockopt unexpected error: -1 (errno 22)
> #427 sockopt_sk:FAIL
>
> After:
> #427 sockopt_sk:OK
>
> While at it, missing free() is fixed up.
>
> Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
> ---
> .../selftests/bpf/prog_tests/sockopt_sk.c | 17 ++++++++++++++++-
> tools/testing/selftests/bpf/progs/sockopt_sk.c | 16 ++++++++++++++++
> 2 files changed, 32 insertions(+), 1 deletion(-)
>
> diff --git a/tools/testing/selftests/bpf/prog_tests/sockopt_sk.c b/tools/testing/selftests/bpf/prog_tests/sockopt_sk.c
> index 53637431ec5d..87e771c8991f 100644
> --- a/tools/testing/selftests/bpf/prog_tests/sockopt_sk.c
> +++ b/tools/testing/selftests/bpf/prog_tests/sockopt_sk.c
> @@ -190,7 +190,7 @@ static int getsetsockopt(void)
> fd = socket(AF_NETLINK, SOCK_RAW, 0);
> if (fd < 0) {
> log_err("Failed to create AF_NETLINK socket");
> - return -1;
> + goto err;
> }
>
> buf.u32 = 1;
> @@ -211,6 +211,21 @@ static int getsetsockopt(void)
> }
> ASSERT_EQ(optlen, 8, "Unexpected NETLINK_LIST_MEMBERSHIPS value");
>
> + /* Trick bpf_tcp_sock() with IPPROTO_TCP */
> + close(fd);
> + fd = socket(AF_INET, SOCK_RAW, IPPROTO_TCP);
> + if (fd < 0) {
> + log_err("Failed to create RAW socket");
> + goto err;
> + }
> +
> + optlen = 60;
> + err = setsockopt(fd, SOL_TCP, TCP_SAVED_SYN, &buf, optlen);
> + if (err) {
Ugh, I forgot to commit s/err/!err/ change.. :/
pw-bot: cr
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v1 bpf 1/2] bpf: tcp: Fix type confusion in bpf_tcp_sock().
2026-04-30 18:43 ` [PATCH v1 bpf 1/2] " Kuniyuki Iwashima
@ 2026-04-30 21:00 ` Daniel Borkmann
0 siblings, 0 replies; 6+ messages in thread
From: Daniel Borkmann @ 2026-04-30 21:00 UTC (permalink / raw)
To: Kuniyuki Iwashima, Martin KaFai Lau, Alexei Starovoitov,
Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi
Cc: John Fastabend, Stanislav Fomichev, Song Liu, Yonghong Song,
Jiri Olsa, Eric Dumazet, Kuniyuki Iwashima, bpf, netdev,
Damiano Melotti
On 4/30/26 8:43 PM, Kuniyuki Iwashima wrote:
> bpf_tcp_sock() only check if sk->sk_protocol is IPPROTO_TCP,
> but RAW socket can bypass it:
>
> socket(AF_INET, SOCK_RAW, IPPROTO_TCP)
>
> Calling bpf_setsockopt() in SOCKOPT prog triggers out-of-bounds
> access to another slab object. [0]
>
> Let's use sk_is_tcp().
>
> [0]:
> BUG: KASAN: slab-out-of-bounds in sol_tcp_sockopt (net/core/filter.c:5519)
> Read of size 8 at addr ffff88801083d760 by task test_progs/1259
>
> CPU: 1 UID: 0 PID: 1259 Comm: test_progs Tainted: G OE 7.0.0-11175-gb5c111f4967b #1 PREEMPT(full)
> Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-debian-1.17.0-1 04/01/2014
> Call Trace:
> <TASK>
> dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
> print_report (mm/kasan/report.c:378 mm/kasan/report.c:482)
> kasan_report (mm/kasan/report.c:595)
> sol_tcp_sockopt (net/core/filter.c:5519)
> __bpf_getsockopt (net/core/filter.c:5633)
> bpf_sk_getsockopt (net/core/filter.c:5654)
> bpf_prog_629ba00a1601e9f2__setsockopt+0x86/0x22c
> __cgroup_bpf_run_filter_setsockopt (./include/linux/bpf.h:1402 ./include/linux/filter.h:722 ./include/linux/filter.h:729 kernel/bpf/cgroup.c:81 kernel/bpf/cgroup.c:2026)
> do_sock_setsockopt (net/socket.c:2363)
> __x64_sys_setsockopt (net/socket.c:2406)
> do_syscall_64 (arch/x86/entry/syscall_64.c:63)
> entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
> RIP: 0033:0x7f85f82fe7de
> Code: 55 48 63 c9 48 63 ff 45 89 c9 48 89 e5 48 83 ec 08 6a 2c e8 34 69 f7 ff c9 c3 66 90 f3 0f 1e fa 49 89 ca b8 36 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 0a c3 66 0f 1f 84 00 00 00 00 00 48 8b 15 e1
> RSP: 002b:00007ffe59dcecd8 EFLAGS: 00000202 ORIG_RAX: 0000000000000036
> RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f85f82fe7de
> RDX: 000000000000001c RSI: 0000000000000006 RDI: 000000000000000d
> RBP: 00007ffe59dcef20 R08: 000000000000003c R09: 0000000000000000
> R10: 00007ffe59dcef00 R11: 0000000000000202 R12: 00007ffe59dcf268
> R13: 0000000000000003 R14: 00007f85f9da5000 R15: 000055b2f3201400
> </TASK>
>
> The buggy address belongs to the object at ffff88801083d280
> which belongs to the cache RAW of size 1792
> The buggy address is located 1248 bytes inside of
> allocated 1792-byte region [ffff88801083d280, ffff88801083d980)
>
> Fixes: 655a51e536c0 ("bpf: Add struct bpf_tcp_sock and BPF_FUNC_tcp_sock")
> Reported-by: Damiano Melotti <melotti@google.com>
> Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
First one lgtm:
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Thanks!
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v1 bpf 2/2] selftest: bpf: Add test for bpf_tcp_sock() and RAW socket.
2026-04-30 20:32 ` Kuniyuki Iwashima
@ 2026-04-30 21:14 ` Kuniyuki Iwashima
0 siblings, 0 replies; 6+ messages in thread
From: Kuniyuki Iwashima @ 2026-04-30 21:14 UTC (permalink / raw)
To: Martin KaFai Lau, Daniel Borkmann, Alexei Starovoitov,
Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi
Cc: John Fastabend, Stanislav Fomichev, Song Liu, Yonghong Song,
Jiri Olsa, Eric Dumazet, Kuniyuki Iwashima, bpf, netdev
On Thu, Apr 30, 2026 at 1:32 PM Kuniyuki Iwashima <kuniyu@google.com> wrote:
>
> On Thu, Apr 30, 2026 at 11:44 AM Kuniyuki Iwashima <kuniyu@google.com> wrote:
> >
> > Let's extend sockopt_sk.c to cover bpf_tcp_sock() for the
> > wrong socket type.
> >
> > Before:
> > # ./test_progs -t sockopt_sk
> > [ 151.948613] ==================================================================
> > [ 151.951376] BUG: KASAN: slab-out-of-bounds in sol_tcp_sockopt+0xc7/0x8e0
> > [ 151.954159] Read of size 8 at addr ffff88801083d760 by task test_progs/1259
> > ...
> > run_test:FAIL:getsetsockopt unexpected error: -1 (errno 22)
> > #427 sockopt_sk:FAIL
> >
> > After:
> > #427 sockopt_sk:OK
> >
> > While at it, missing free() is fixed up.
> >
> > Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
> > ---
> > .../selftests/bpf/prog_tests/sockopt_sk.c | 17 ++++++++++++++++-
> > tools/testing/selftests/bpf/progs/sockopt_sk.c | 16 ++++++++++++++++
> > 2 files changed, 32 insertions(+), 1 deletion(-)
> >
> > diff --git a/tools/testing/selftests/bpf/prog_tests/sockopt_sk.c b/tools/testing/selftests/bpf/prog_tests/sockopt_sk.c
> > index 53637431ec5d..87e771c8991f 100644
> > --- a/tools/testing/selftests/bpf/prog_tests/sockopt_sk.c
> > +++ b/tools/testing/selftests/bpf/prog_tests/sockopt_sk.c
> > @@ -190,7 +190,7 @@ static int getsetsockopt(void)
> > fd = socket(AF_NETLINK, SOCK_RAW, 0);
> > if (fd < 0) {
> > log_err("Failed to create AF_NETLINK socket");
> > - return -1;
> > + goto err;
> > }
> >
> > buf.u32 = 1;
> > @@ -211,6 +211,21 @@ static int getsetsockopt(void)
> > }
> > ASSERT_EQ(optlen, 8, "Unexpected NETLINK_LIST_MEMBERSHIPS value");
> >
> > + /* Trick bpf_tcp_sock() with IPPROTO_TCP */
> > + close(fd);
> > + fd = socket(AF_INET, SOCK_RAW, IPPROTO_TCP);
> > + if (fd < 0) {
> > + log_err("Failed to create RAW socket");
> > + goto err;
> > + }
> > +
> > + optlen = 60;
> > + err = setsockopt(fd, SOL_TCP, TCP_SAVED_SYN, &buf, optlen);
> > + if (err) {
>
> Ugh, I forgot to commit s/err/!err/ change.. :/
>
I'll include Matt's followup and extend the test
accordingly in v2.
https://lore.kernel.org/mptcp/20260430-mptcp-bpf-mptcp-sock-type-v1-1-d2ed5cda7da9@kernel.org/
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2026-04-30 21:14 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-04-30 18:43 [PATCH v1 bpf 0/2] bpf: tcp: Fix type confusion in bpf_tcp_sock() Kuniyuki Iwashima
2026-04-30 18:43 ` [PATCH v1 bpf 1/2] " Kuniyuki Iwashima
2026-04-30 21:00 ` Daniel Borkmann
2026-04-30 18:43 ` [PATCH v1 bpf 2/2] selftest: bpf: Add test for bpf_tcp_sock() and RAW socket Kuniyuki Iwashima
2026-04-30 20:32 ` Kuniyuki Iwashima
2026-04-30 21:14 ` Kuniyuki Iwashima
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