Hi Larry, I was offering to do testing. You might not remember me from like 15 years ago but I remember you. I was fighting a BCM4311 back then. The symptoms are interesting. It freezes not just that session but all other ssh sessions. I want to point out that it doesn't fail in all ssh use cases, just file i/o. ssh terminal sessions don't cause it but are also frozen when it hits. After the bug is triggered no new sessions can be initiated. What is fun is that it starts doing file i/o before it triggers so some small number of bytes or time are required. So often I can see whole directories on remote file systems just before it locks up. I looked at wl a while back but I really wanted to contribute testing to fix what remains the one unpatched bug in the driver. Thanks, Evan On Tue, Mar 9, 2021 at 5:26 PM Larry Finger <Larry.Finger@xxxxxxxxxxxx> wrote: > > On 3/9/21 6:18 AM, Evan Foss wrote: > > Hi B43-dev, > > > > I am having trouble with the wifi card in my macbook pro 2012. It's a > > BCM4331 and it hangs on ssh sessions. > > > > I noticed it documented here. > > https://wiki.archlinux.org/index.php/broadcom_wireless#SSH_freeze_for_BCM4331_with_b43 > > > > Is there some testing I could contribute to help fix this? > > Evan, > > I do not have that card, thus I cannot test with that chip. > > Given the age of the chips driven by b43, it is hard to imagine that there are > any undisclosed proprietary secrets buried in the code. Broadcom should open > source these old drivers. > > What are the symptoms of the frozen sessions? Is there anything in particular > that you are doing when it freezes? Does the freeze require rebooting either of > the machines in question? Is anything logged in the dmesg output of either machine? > > One useful test would be to run Wireshark to capture the data on the network > interface. That capture file might have information that you would not want to > share, but you should be able to supply only the last few packets. > > A macbook of that vintage should be able to run wl. That may be your best option. > > Larry > > -- https://github.com/evanfoss -----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v2 mQENBFYy4RYBCAC183JomLtbdAlcKiaPDoVHq52LDmVmH75aiEc69m7YxDt54/ai VtYCAobbGVIyn3Hlz3uhF6LnPl/6Lm1VdnCfpwu3KQhCO6ds10ow2C30X4ohCqOd hCVg5C+ILmQkEffFrFODy3ji+PYTF4pADvHCWsTMv0hf0llwFOJsBCK6cl02IffE JPqy4PjM1nZ9HpzT84JBaG/4OGvTZ8SQ2yFUl265jagvygPTf88H1xpZHH1r8dB1 stjUHLmPH8AOyDgKxFchgGeDc3p/vJtgDDIXAFfDXG0NSRovLmtaQdGxe47Zf/go bXiEM7YL2WqQe5zfEA919JxkEwlDKYniOSVzABEBAAG0N0V2YW4gRm9zcyAoVGhp cyBpcyBteSBwdWJsaWMga2V5LikgPGV2YW5mb3NzQGdtYWlsLmNvbT6JATkEEwEC ACMFAlYy4RYCGwMHCwkIBwMCAQYVCAIJCgsEFgIDAQIeAQIXgAAKCRCIpQTcE8nN bbBaCACAm8pU5lG1ev2Fsw68Axtcl57SJrYieqX96c3YuYH9JpqMqJRnd9nDKw9X tQuvuH7tUk0VbOaDqReOYJVI/4c5wb9AaOFp6K2DUcupq6XhgXpvz3HzoPwjAdIj XuQzdRUx5+innTJrSkGuBYW/CZ2zqEx4xfLlq4rO0hoTUMR8QVp2cCrkw6BT0m86 APIw/ZnjoxM8IEzr7MxfRIg3qpzrZk28rmhx+k78Jyk61UhwcCPGIm/pjUopTwYJ 3YBdRB2cYD2aN7A1JVf5cRmSQYooHBGpH0kYvomGk97PKqypVuJ7OpG9xM58wUcC qUVt9hKlePLzP8csYjt8onqI7qIIuQENBFYy4RYBCADlH8spG3WkCx62vB5mr5Z0 SCDd/RcyA4A5y5EOj5KurQkrSWpgi9Ho1yKruMJ6blQR2qkc66KqH9pnXDm/ZI1M K/wdW3ngETxBmXoozzFMT89aEWIVR5/PFodWK1elekE9iJxACuR98Zg2QttTD3x8 A9w8VEyMLOXcDTrPFpHegMKswFBg5iuMulAdXAoGejWTI3n+qKFpabHm2Lfs6wjk 5rjucpTdeFK6UeWF1xAvNxXibuu5BlGwv53930qIXRwO/Gn2Rh5DXWxKU2fEIme/ xgQQmIsDeUoWbfybdjw/x7Q0LW4mINiLDQcGHHRQKFIxbAJCT3USPLGh5xwE9/Er ABEBAAGJAR8EGAECAAkFAlYy4RYCGwwACgkQiKUE3BPJzW0uYAf9Hf30n8tM3mR2 Zo6ESE0ivgdgjaJtAWrBUx7JzAzPjBnBOlNnu5Y9lVEqetvUPH6e3PvaHYUuaUU8 0HwxuKBW9nUprgV6uIu1DZmlcp+SxpbuCy7RDpNocRLNWWFMaYYzznmTgfnTgD4D gCq8Mf1mcfrluTkOAo+QNqbMfl1GISClopRqxVuAo59ewgMnFujwgd8w12BwWl24 CzqOs5HqcUslePj+LzcjSNgVCklYwKl+0dsb/fctMOCtHodwqm2CBJ+zydvNmYkD fxda/J91Z1xrah5ec++FL0L4vs+jCiIWJeupJFKlr1hCMZiiGH7W554loK5l4jv3 EY347EidAw== =Ta4p -----END PGP PUBLIC KEY BLOCK-----
