Date: Sat, 28 Sep 2019 09:40:11 +0000 From: bugzilla-noreply@freebsd.org To: fs@FreeBSD.org Subject: [Bug 240853] Any moderate I/O panics the kernel when MAC_BIBA + multilabel is enabled Message-ID: <bug-240853-3630-fL5KL9mebB@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-240853-3630@https.bugs.freebsd.org/bugzilla/> References: <bug-240853-3630@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D240853 --- Comment #3 from kayront <realkay@mailbox.org> --- - Exact FreeBSD version (uname -a) FreeBSD fbsdtest 12.0-RELEASE-p10 FreeBSD 12.0-RELEASE-p10 GENERIC amd64 - /var/run/dmesg.boot output (as an attachment) Will attach. - Check and confirm that the file system is clean (fsck -fy in single user)= , or report back if it is not /dev/vtbd0p2: FILE SYSTEM CLEAN; SKIPPING CHECKS - See if you can obtain a kernel panic backtrace [1], and in particular try= to catch the initial "panic message" It is: softdep_deallocate_dependencies: dangling deps Funnily (or tragically, I guess) enough with dumps enabled it then proceeds= to panic while writing the crash summary: Writing crash summary to /var/crash/core.txt.0. panic: softdep_deallocate_dependencies: dangling deps cpuid =3D 0 time =3D 1569663157 KDB: stack backtrace: #0 0xffffffff80be78d7 at kdb_backtrace+0x67 #1 0xffffffff80b9b4b3 at vpanic+0x1a3 #2 0xffffffff80b9b303 at panic+0x43 #3 0xffffffff80e979f6 at softdep_deallocate_dependencies+0x76 #4 0xffffffff80c4a27f at brelse+0x16f #5 0xffffffff80c4e7fd at buf_recycle+0x2ad #6 0xffffffff80c4ee57 at bufspace_daemon+0xe7 #7 0xffffffff80b5be83 at fork_exit+0x83 #8 0xffffffff8105061e at fork_trampoline+0xe Uptime: 9s Dumping 102 out of 472 MB:..16%..32%..47%..63%..78%..94% - Clarify whether or not the panic is reproducible *without* MAC_BIBA and/or multilabel enabled (test each combination) Just tested, and: root@fbsdtest:~ # kldstat | grep biba root@fbsdtest:~ # mount|grep label /dev/vtbd0p2 on / (ufs, local, noatime, journaled soft-updates, multilabel, acls) devfs on /dev (devfs, local, multilabel) Ran a find /, installed some packages, and no problem; this seems to make s= ense if you look at the original message, which included: #17 0xffffffff826abbf6 at biba_vnode_create_extattr+0x126 (this is not present if the module is not loaded) Without multilabel is how I had the system before and it was fine, so I did= not test again, but let me know if that would add any new useful information. --=20 You are receiving this mail because: You are the assignee for the bug. You are on the CC list for the bug.=
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