From: Florian Lehner <dev@der-flo.net>
To: bpf@vger.kernel.org
Cc: x86@kernel.org, davem@davemloft.net, ast@kernel.org,
daniel@iogearbox.net, andrii@kernel.org, peterz@infradead.org,
keescook@chromium.org, tglx@linutronix.de, hsinweih@uci.edu,
rostedt@goodmis.org, vegard.nossum@oracle.com,
gregkh@linuxfoundation.org, alan.maguire@oracle.com,
dylany@meta.com, riel@surriel.com,
Florian Lehner <dev@der-flo.net>
Subject: [v2 bpf-next 0/2] Fix copy_from_user_nofault()
Date: Mon, 10 Apr 2023 19:43:43 +0200 [thread overview]
Message-ID: <20230410174345.4376-1-dev@der-flo.net> (raw)
The original patch got submitted by Alexei Starovoitov with [0] and
fixes issues that got also reported in [1].
This resubmission adds !pagefault_disabled() to the check in
check_heap_object().
Changelog:
v1->v2: Addressed comments from Alexei Starovoitov
- move pagefault_disabled() check into first patch
- keep __copy_from_user_inatomic() in copy_from_user_nofault()
[0] https://lore.kernel.org/all/20230118051443.78988-1-alexei.starovoitov@gmail.com/
[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1033398
Alexei Starovoitov (2):
mm: Fix copy_from_user_nofault().
perf: Fix arch_perf_out_copy_user().
arch/x86/include/asm/perf_event.h | 2 --
arch/x86/lib/Makefile | 2 +-
arch/x86/lib/usercopy.c | 55 -------------------------------
kernel/events/internal.h | 16 +--------
mm/maccess.c | 52 ++++++++++++++++++++++++-----
mm/usercopy.c | 2 +-
6 files changed, 47 insertions(+), 82 deletions(-)
delete mode 100644 arch/x86/lib/usercopy.c
--
2.39.2
next reply other threads:[~2023-04-10 17:44 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-10 17:43 Florian Lehner [this message]
2023-04-10 17:43 ` [v2 bpf-next 1/2] mm: Fix copy_from_user_nofault() Florian Lehner
2023-04-10 17:43 ` [v2 bpf-next 2/2] perf: Fix arch_perf_out_copy_user() Florian Lehner
2023-04-13 0:43 ` Alexei Starovoitov
2023-04-13 0:50 ` [v2 bpf-next 0/2] Fix copy_from_user_nofault() patchwork-bot+netdevbpf
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