projects / platform / kernel / linux-rpi.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 86723c8) | patch
bpf, x64: fix stack layout of JITed bpf code
authorAlexei Starovoitov <ast@kernel.org>
Fri, 14 Jun 2019 22:43:28 +0000 (15:43 -0700)
committerAlexei Starovoitov <ast@kernel.org>
Sat, 15 Jun 2019 01:02:25 +0000 (18:02 -0700)
commitfe8d9571dc50232b569242fac7ea6332a654f186
tree5278d30db2ccb8b0b61d787ab9c867482b1de0a7tree | snapshot
parent86723c8640633bee4b4588d3c7784ee7a0032f65commit | diff
bpf, x64: fix stack layout of JITed bpf code

Since commit 177366bf7ceb the %rbp stopped pointing to %rbp of the
previous stack frame. That broke frame pointer based stack unwinding.
This commit is a partial revert of it.
Note that the location of tail_call_cnt is fixed, since the verifier
enforces MAX_BPF_STACK stack size for programs with tail calls.

Fixes: 177366bf7ceb ("bpf: change x86 JITed program stack layout")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
arch/x86/net/bpf_jit_comp.c diff | blob | history
Domain: System / Kernel;