From: Jiayuan Chen <jiayuan.chen@linux.dev>
To: bpf@vger.kernel.org
Cc: Jiayuan Chen <jiayuan.chen@linux.dev>,
Quan Sun <2022090917019@std.uestc.edu.cn>,
Yinhao Hu <dddddd@hust.edu.cn>,
Kaiyan Mei <M202472210@hust.edu.cn>,
Dongliang Mu <dzm91@hust.edu.cn>, KP Singh <kpsingh@kernel.org>,
Matt Bobrowski <mattbobrowski@google.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>,
Martin KaFai Lau <martin.lau@linux.dev>,
Eduard Zingerman <eddyz87@gmail.com>,
Kumar Kartikeya Dwivedi <memxor@gmail.com>,
Song Liu <song@kernel.org>,
Yonghong Song <yonghong.song@linux.dev>,
Jiri Olsa <jolsa@kernel.org>,
linux-kernel@vger.kernel.org
Subject: [PATCH bpf] bpf: Drop task_to_inode and inet_conn_established from lsm sleepable hooks
Date: Tue, 7 Apr 2026 20:23:33 +0800 [thread overview]
Message-ID: <20260407122334.344072-1-jiayuan.chen@linux.dev> (raw)
bpf_lsm_task_to_inode() is called under rcu_read_lock() and
bpf_lsm_inet_conn_established() is called from softirq context, so
neither hook can be used by sleepable LSM programs.
Fixes: 423f16108c9d8 ("bpf: Augment the set of sleepable LSM hooks")
Reported-by: Quan Sun <2022090917019@std.uestc.edu.cn>
Reported-by: Yinhao Hu <dddddd@hust.edu.cn>
Reported-by: Kaiyan Mei <M202472210@hust.edu.cn>
Reported-by: Dongliang Mu <dzm91@hust.edu.cn>
Closes: https://lore.kernel.org/bpf/3ab69731-24d1-431a-a351-452aafaaf2a5@std.uestc.edu.cn/T/#u
Signed-off-by: Jiayuan Chen <jiayuan.chen@linux.dev>
---
kernel/bpf/bpf_lsm.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/kernel/bpf/bpf_lsm.c b/kernel/bpf/bpf_lsm.c
index 0e74325d96a61..c5c925f002021 100644
--- a/kernel/bpf/bpf_lsm.c
+++ b/kernel/bpf/bpf_lsm.c
@@ -359,8 +359,6 @@ BTF_ID(func, bpf_lsm_sb_umount)
BTF_ID(func, bpf_lsm_settime)
#ifdef CONFIG_SECURITY_NETWORK
-BTF_ID(func, bpf_lsm_inet_conn_established)
-
BTF_ID(func, bpf_lsm_socket_accept)
BTF_ID(func, bpf_lsm_socket_bind)
BTF_ID(func, bpf_lsm_socket_connect)
@@ -381,7 +379,6 @@ BTF_ID(func, bpf_lsm_syslog)
BTF_ID(func, bpf_lsm_task_alloc)
BTF_ID(func, bpf_lsm_task_prctl)
BTF_ID(func, bpf_lsm_task_setscheduler)
-BTF_ID(func, bpf_lsm_task_to_inode)
BTF_ID(func, bpf_lsm_userns_create)
BTF_ID(func, bpf_lsm_bdev_alloc_security)
BTF_ID(func, bpf_lsm_bdev_setintegrity)
--
2.43.0
next reply other threads:[~2026-04-07 12:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-07 12:23 Jiayuan Chen [this message]
2026-04-07 15:00 ` [PATCH bpf] bpf: Drop task_to_inode and inet_conn_established from lsm sleepable hooks patchwork-bot+netdevbpf
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