arch: arm: bpf: Converting cBPF to eBPF for arm 32 bit
From: Kees Cook <hidden>
Date: 2017-05-23 04:27:57
Also in:
netdev
Possibly related (same subject, not in this thread)
- 2017-05-23 · arch: arm: bpf: Converting cBPF to eBPF for arm 32 bit · Kees Cook <hidden>
- 2017-05-09 · arch: arm: bpf: Converting cBPF to eBPF for arm 32 bit · daniel@iogearbox.net (Daniel Borkmann)
- 2017-05-09 · arch: arm: bpf: Converting cBPF to eBPF for arm 32 bit · davem@davemloft.net (David Miller)
- 2017-05-09 · arch: arm: bpf: Converting cBPF to eBPF for arm 32 bit · Shubham Bansal <hidden>
- 2017-05-06 · arch: arm: bpf: Converting cBPF to eBPF for arm 32 bit · Shubham Bansal <hidden>
On Mon, May 22, 2017 at 7:58 PM, Shubham Bansal [off-list ref] wrote:
On testing the eBPF JIT with CONFIG_FRAME_POINTER I got the following crash for non jitted testcase.
It's just a softlockup WARN, not a crash, and I think it'd to be expected given the large runtime test_bpf reports:
[ 72.032494] test_bpf: #267 BPF_MAXINSNS: Call heavy transformations jited:0 1112799 [ 92.304815] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [insmod:104] ... [ 93.835343] 1065840 PASS
https://www.kernel.org/doc/Documentation/lockup-watchdogs.txt You can raise the softlockup time-out by changing the number of seconds here: /proc/sys/kernel/watchdog_thresh I think the softlockup is counting the entire runtime of the bpf_tests run, so if it takes 30 seconds to run, put at least 15 into /proc/sys/kernel/watchdog_thresh -Kees -- Kees Cook Pixel Security