]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
fprobe: Check rethook_alloc() return in rethook initialization
authorRafael Mendonca <rafaelmendsr@gmail.com>
Tue, 25 Oct 2022 03:12:08 +0000 (00:12 -0300)
committerMasami Hiramatsu (Google) <mhiramat@kernel.org>
Thu, 3 Nov 2022 23:50:00 +0000 (08:50 +0900)
commitd05ea35e7eea14d32f29fd688d3daeb9089de1a5
tree06f1b787d0588ff6a658059eda3c77a56a5ad903
parent4a6f316d6855a434f56dbbeba05e14c01acde8f8
fprobe: Check rethook_alloc() return in rethook initialization

Check if fp->rethook succeeded to be allocated. Otherwise, if
rethook_alloc() fails, then we end up dereferencing a NULL pointer in
rethook_add_node().

Link: https://lore.kernel.org/all/20221025031209.954836-1-rafaelmendsr@gmail.com/
Fixes: 5b0ab78998e3 ("fprobe: Add exit_handler support")
Cc: stable@vger.kernel.org
Signed-off-by: Rafael Mendonca <rafaelmendsr@gmail.com>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
kernel/trace/fprobe.c