linux-yocto - Yocto Linux Embedded kernel

Age	Commit message (Collapse)	Author
2023-08-11	treewide: Remove uninitialized_var() usage	Kees Cook
	commit 3f649ab728cda8038259d8f14492fe400fbab911 upstream. Using uninitialized_var() is dangerous as it papers over real bugs[1] (or can in the future), and suppresses unrelated compiler warnings (e.g. "unused variable"). If the compiler thinks it is uninitialized, either simply initialize the variable or make compiler changes. In preparation for removing[2] the[3] macro[4], remove all remaining needless uses with the following script: git grep '\buninitialized_var\b' \| cut -d: -f1 \| sort -u \| \ xargs perl -pi -e \ 's/\buninitialized_var$([^$]+)\)/\1/g; s:\s/\ (GCC be quiet\|to make compiler happy) \*/$::g;' drivers/video/fbdev/riva/riva_hw.c was manually tweaked to avoid pathological white-space. No outstanding warnings were found building allmodconfig with GCC 9.3.0 for x86_64, i386, arm64, arm, powerpc, powerpc64le, s390x, mips, sparc64, alpha, and m68k. [1] https://lore.kernel.org/lkml/20200603174714.192027-1-glider@google.com/ [2] https://lore.kernel.org/lkml/CA+55aFw+Vbj0i=1TGqCR5vQkCzWJ0QxK6CernOU6eedsudAixw@mail.gmail.com/ [3] https://lore.kernel.org/lkml/CA+55aFwgbgqhbp1fkxvRKEpzyR5J8n1vKT1VZdz9knmPuXhOeg@mail.gmail.com/ [4] https://lore.kernel.org/lkml/CA+55aFz2500WfbKXAx8s67wrm9=yVJu65TpLgN_ybYNv0VEOKA@mail.gmail.com/ Reviewed-by: Leon Romanovsky <leonro@mellanox.com> # drivers/infiniband and mlx4/mlx5 Acked-by: Jason Gunthorpe <jgg@mellanox.com> # IB Acked-by: Kalle Valo <kvalo@codeaurora.org> # wireless drivers Reviewed-by: Chao Yu <yuchao0@huawei.com> # erofs Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-24	netfilter: nf_socket: Fix out of bounds access in nf_sk_lookup_slow_v{4,6}	Subash Abhinov Kasiviswanathan
	skb_header_pointer will copy data into a buffer if data is non linear, otherwise it will return a pointer in the linear section of the data. nf_sk_lookup_slow_v{4,6} always copies data of size udphdr but later accesses memory within the size of tcphdr (th->doff) in case of TCP packets. This causes a crash when running with KASAN with the following call stack - BUG: KASAN: stack-out-of-bounds in xt_socket_lookup_slow_v4+0x524/0x718 net/netfilter/xt_socket.c:178 Read of size 2 at addr ffffffe3d417a87c by task syz-executor/28971 CPU: 2 PID: 28971 Comm: syz-executor Tainted: G B W O 4.9.65+ #1 Call trace: [<ffffff9467e8d390>] dump_backtrace+0x0/0x428 arch/arm64/kernel/traps.c:76 [<ffffff9467e8d7e0>] show_stack+0x28/0x38 arch/arm64/kernel/traps.c:226 [<ffffff946842d9b8>] __dump_stack lib/dump_stack.c:15 [inline] [<ffffff946842d9b8>] dump_stack+0xd4/0x124 lib/dump_stack.c:51 [<ffffff946811d4b0>] print_address_description+0x68/0x258 mm/kasan/report.c:248 [<ffffff946811d8c8>] kasan_report_error mm/kasan/report.c:347 [inline] [<ffffff946811d8c8>] kasan_report.part.2+0x228/0x2f0 mm/kasan/report.c:371 [<ffffff946811df44>] kasan_report+0x5c/0x70 mm/kasan/report.c:372 [<ffffff946811bebc>] check_memory_region_inline mm/kasan/kasan.c:308 [inline] [<ffffff946811bebc>] __asan_load2+0x84/0x98 mm/kasan/kasan.c:739 [<ffffff94694d6f04>] __tcp_hdrlen include/linux/tcp.h:35 [inline] [<ffffff94694d6f04>] xt_socket_lookup_slow_v4+0x524/0x718 net/netfilter/xt_socket.c:178 Fix this by copying data into appropriate size headers based on protocol. Fixes: a583636a83ea ("inet: refactor inet[6]_lookup functions to take skb") Signed-off-by: Tejaswi Tanikella <tejaswit@codeaurora.org> Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2017-04-15	netfilter: remove nf_ct_is_untracked	Florian Westphal
	This function is now obsolete and always returns false. This change has no effect on generated code. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-11-01	netfilter: move socket lookup infrastructure to nf_socket_ipv{4,6}.c	Pablo Neira Ayuso
	We need this split to reuse existing codebase for the upcoming nf_tables socket expression. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>