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[83.67.210.170]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-378e7800072sm8752374f8f.76.2024.09.17.00.06.01 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 17 Sep 2024 00:06:01 -0700 (PDT) Message-ID: <381c3f52-7e38-49e3-aa20-bacbf23117bc@gmail.com> Date: Tue, 17 Sep 2024 08:06:00 +0100 List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@FreeBSD.org MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Kernel panics with Widevine and htop: VNPASS in sys/kern/vfs_cache.c To: FreeBSD-CURRENT References: <63DE0143-2113-419A-9DBC-516940859206.ref@yahoo.com> <63DE0143-2113-419A-9DBC-516940859206@yahoo.com> From: Graham Perrin Content-Language: en-GB Autocrypt: addr=grahamperrin@gmail.com; keydata= xsFNBGKYt7ABEAClu83dJ3ZKfVgPOk9YKRv0Z+dl2b88+k9R4vwAmElgguYdKE7yhnQNhhWM v9vi6AFrBMc2oJdVHJ2OrXfwpELBFIgiSMEWNsC4e+Z3HtSajcl+pFZsP7ciiSoycj/w3wIV kAZoVGbhyIbNG7fbCEJ8q81TbfsGypV3bRmbZVvGNecBguYiooBtz2Qht1p3itXMkIA6P9pS YDl+6QddZLyUUAjAnFv2QDoYSHLnaDUWw4oONZsB0SKVu8jMIBh4uJZoYEOvdvc9jQQdOpA2 CAgA6ulfm42Ikr9lKBUUCtjqiWAhJ7iXOTyHAIdR4Mf8alCE6tdTq6dHdIt+GktTY7oYNyL2 3aD3C7I5waU0SFXvJcOMG10QLfwYQMOQoYQ9XJ0U5A28WYiDcylDdUWT7SappP1e1ZMeJWWO y14mxxNzHaJSI4rK8P/p5tp3Q7SSC4k5gMh9zKba3K2ApCWNbVLGvXsJeQkZZNvu70tE81ey AHI5iZcB6D7WaHysBUmsKaEpbcmm1ZThTnGL0SHEl5to5Jab5Fg6O+Cnly5sVz5lX/v8Aosx kKNei7SCVqXOVtteQeGxWbXWbhPgbMyc0Gi3DuxBI/yvJ43k/rJysQlLGLWfJx/UXprwLluC PDK9EvKEB+fD1Z349uzp1sKr3ihpySbyKI8fpudftnAz4EsoCwARAQABzSZHcmFoYW0gUGVy cmluIDxncmFoYW1wZXJyaW5AZ21haWwuY29tPsLBlAQTAQoAPhYhBFk/5bLDBwftvJcvCrdn SG9KGNQLBQJimMMBAhsDBQkFo5qABQsJCAcDBRUKCQgLBRYDAgEAAh4FAheAAAoJELdnSG9K GNQLbHAQAJi998y42bEbq5HmABYovmAEtQj33YSUWyc9QRmAHpN8Er3lTKsgmZcVChB5Fu/d go2oYynDjlVpA7+wiSmg4AG78mOYbg/e19XMhrH0keDKqZXFkU+G7agR0mF09qvpQZ9MTJYZ 2u7FtytZK665UfipOdV8eGn2hFC/WynjUwEzKyryBgbbLAEbfOPeZNry4h2ZPWbtTvx/PE/V X3Vh2oGqYx69DCGz+0xEhy62ZKbkX5SL8LUf/1WViyCVzsHasFxmFxYPWIfBy8ayQ7xapz7M cSXSQyu4oDT4qh9eZiGP9/aAcZKHcV6t9y77JGhUJ/5O1sANKMa3YhgimE+Z86LHYa1IH774 PHj1nAXBwS+Cj/1l/NQoQcyjvOj8zuCsMJVaLMb6B46YsReP4+3yBLpyeBC//t6zWPbgAkWW VjROC0dXUAMTFpnA6NZe3UghG+Nc4fnCLGOhc2nyWFYHIaYV6Hv1ITFSem9DdeNnR1CFm1VM TJ7i7TuqYM+WZTkoUsTf4c46hS/ZNJZSCxh0s9yYr+BYk3XBbd+ElaZ1dJE6cuSVdw15+P2h DnprurxC4byl4YFkn+UAVvQsOgeq6aSHLOHX0weYu1OLoiPYsTdyGhne72+kDhEEdFD5aHdQ PFrbQIrqWLV0a04++0ZwGpNvXtgnWhDdAQJDwGsSSwbLzsFNBGKYt7ABEADRb1tZuh7DPYET 0wK6fe7owbYgM+RfKhmcrGgR2HI9M2q6+0WKF/ITnggWdIW2Ecc4z2boLz/cwvPGCS7/YxZM 61KklGCwuS7q1s04XnHDWHuFxfXQPzAdVmNO3bYoMZbJjHXs6sB2u5ksiwPwaMAWWaGkviSj c5pwvHCiTmX5vH5CBj/Vi+5ESyX38vK4JM5S/m4ouI/6M9biyFgimV+v3vVyCxJCT1gI9g4o GIh1qq5S433b1fihn4yHPf8XOKyBpA/QcwLONViBqJL5nnOxpsh344rNxn2R7CcRzzicOV+e 2IbMem4lwNWQlZKoRotKXZi9LqN5mynSBYqAUdoZum0QinWT9F22B0Qex5PH1zAt9i2W91Vd kcPB3LwkRXj07ycRtsSzpgPA6fLc6AsoWFslHl8kVOO5eJIA4xhjlPa+W8lguQHZ0iX+5uAv 2eAgXR2swADuHPuENNFStmsgAMl8OOOgtq75yA5TpyIzxMuXV9Nmp0VfIaUM/IdLdmxhc1pC c320l5fYMHVLFAReWEbSj2QH8YzWfpXHIegutWWYEbH9SiDXgS9KoKmCJV/Qa+x6/b8y3pOZ vnIbCDaynC2Yr50s8gRa9kb54JE8Z+p8r16U3SEsK3PtUi0RF0e51danCVHrrE6/Hat2XUO/ 6nnYgVgFOrLao6Gh/VMs8wARAQABwsF8BBgBCgAmFiEEWT/lssMHB+28ly8Kt2dIb0oY1AsF AmKYt7ACGwwFCQWjmoAACgkQt2dIb0oY1Av7qg//YjCZg8VXyMzXssgIQpROKKqh5V0UBSQl rM3tq4tWhyg0HVMugQj0Om+iNPsEEOGHkm6tyhHMzlKGpAc/l0iAM+8twIyg44Yo5+DcfFXr OMTbTw9T9jDsWOkOBksxy29iYhgpqpWdDBnhXvrJp/FNAiX8CfzrIOZeFPydDoEiKBEXAxfe a9o5J/JeVnZiUeoiFe7i68nZGsb4JxhPczNfqW12t0Ll5/ibjszg5BgjXiLao0KqbWNh4bS5 CVwH90Or+5qqWgzWPeBiuz+rN2QXE/V/fL44GEj1YKASCqmaiYRgjoRFubz1aq1wCXMXY3Iq d4525rscUgS7HBxbblnyTodUPaamN/2nSzcmE/Pkx8MApDSgZCIhs0RTAg+/AoX4HULV1rSE TQwMrBEQt84Tw5W5rHsvXKr4ZEsJUpbPLWYTISsp23nHR+vZtL/Ug+OWCmHC7X7D21xk/xVJ 4sA1RLJBKdCHtnyA4Unv/kNS1KVGxHnITVyw1a71QJADu4qsdtM5u6CyYUhqhM1oseWtV6j+ Qi8KC/G4C3AgZf06fe2fVl42z2grTabL4bC6FQXMwTX2dsm5NakWjUCmUL8uwsQE7ZA4zKxo EYI1YV9q1birpzncYRupr1qnMoggMUHWq0IBYshFQrEO8PeVUZBw7/GfAeh3argdw2Qu748T Cyw= Cc: Mark Millard In-Reply-To: <63DE0143-2113-419A-9DBC-516940859206@yahoo.com> Content-Type: text/plain; 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RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::329:from] X-Rspamd-Queue-Id: 4X7CVj48bVz4d3v On 16/09/2024 04:48, Mark Millard wrote: > Graham Perrin wrote on > Date: Wed, 22 May 2024 20:32:42 UTC : > >> Reproducible at . >> >> > This is a list message that is directly explicit about > various things in the report instead of being indirect. > > The GENERIC panics are at the VNPASS indicated below in > sys/kern/vfs_cache.c : > > /* > * Resolve a directory to a pathname. > * > * The name of the directory can always be found in the namecache or fetched > * from the filesystem. There is also guaranteed to be only one parent, meaning > * we can just follow vnodes up until we find the root. > * > * The vnode must be referenced. > */ > static int > vn_fullpath_dir(struct vnode *vp, struct vnode *rdir, char *buf, char **retbuf, > size_t *len, size_t addend) > { > #ifdef KDTRACE_HOOKS > struct vnode *startvp = vp; > #endif > struct vnode *vp1; > size_t buflen; > int error; > bool slash_prefixed; > > VNPASS(vp->v_type == VDIR || VN_IS_DOOMED(vp), vp); > . . . > > For reference: > > /usr/main-src/sys/sys/vnode.h:#define VN_IS_DOOMED(vp) __predict_false((vn_irflag_read(vp) & VIRF_DOOMED) != 0) > > … Big thanks to Mark for investigating. When I first wrote here, in May, I had no idea that htop could trigger the panics. I knew little more than, a panic occurring with every (-CURRENT GENERIC) attempt to use Widevine in www/chromium. > … As far as I can see, htop touches the problem area but > itself is not the problem. The handling of the "worker" > related context for the type of kernel call seems to be > what is at issue, likely no matter what process happens > to make the same basic kernel call that ends up with > "worker" in the context. > > === > Mark Millard > marklmi at yahoo.com Built as shown at , it's now possible for Chromium to detect (and play) Widevine content, with GENERIC, whilst htop runs. For myself, I have set aside a copy of FreeBSD Project-packaged htop-3.3.0_4.pkg Regards Graham