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Tue, 26 May 2026 13:20:53 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 295609] GEOM, maybe g_cache, panic on 16-CURRENT during heavy load Date: Tue, 26 May 2026 13:20:54 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 16.0-CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: agh@riseup.net X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-bugs@FreeBSD.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D295609 Bug ID: 295609 Summary: GEOM, maybe g_cache, panic on 16-CURRENT during heavy load Product: Base System Version: 16.0-CURRENT Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: agh@riseup.net Have been getting kernel panics when poudriere-bulk is running. The host is= an AMD EYPC 7742, 64 core with 125GiB RAM. Poudriere is configured with USE_TMPFS=3Dall, the disk storage is a ufs+gjournal+geli on a gstripe of 8 gmirror pairs, each disk is labeled with gcache, for a total of 16 disks, a= nd 24TiB of space. Each gcache label was configured with 128 elements at 1MiB.= I have noticed recently that the host eventually (either minutes or hours) responds poorly to input within a tmux session, and all the NFS clients will often stall for minutes reading or writing files, this file IO delay is also observed on the host. > Fatal trap 9: general protection fault while in kernel mode > cpuid =3D 11; apic id =3D 0b > instruction pointer =3D 0x20:0xffffffff806187d0 > stack pointer =3D 0:0xfffffe01fb9b7e20 > frame pointer =3D 0:0xfffffe01fb9b7e60 > code segment =3D base 0x0, limit 0xfffff, type 0x1b > =3D DPL 0, pres 1, long 1, def32 0, gran 1 > processor eflags =3D interrupt enabled, resume, IOPL =3D 0 > current process =3D 14 (g_down) > rdi: fffff8011ba60180 rsi: fffff80e0f318cc0 rdx: 6972506e6f697461 > rcx: 0000000000000007 r8: 0000000000000000 r9: fffff8011ba1bc00 > rax: 00000000002d5cd7 rbx: fffff80e0f318cc0 rbp: fffffe01fb9b7e60 > r10: 0000000000009000 r11: 0000000000000200 r12: fffff80e0f318cc0 > r13: fffff8010e9b3780 r14: fffff8011ba601b8 r15: fffff8011ba60180 > trap number =3D 9 > panic: general protection fault > cpuid =3D 11 > time =3D 1779798903 > Uptime: 3h38m43s > Dumping 9081 out of 130902 MB:..1%..11%..21%..31%..41%..51%..61%..71%..81= %..91% >=20 > Reading symbols from /boot/kernel.FAFNIR/linux.ko... > Reading symbols from /usr/lib/debug//boot/kernel.FAFNIR/linux.ko.debug... > Reading symbols from /boot/kernel.FAFNIR/linux_common.ko... > Reading symbols from /usr/lib/debug//boot/kernel.FAFNIR/linux_common.ko.d= ebug... > Reading symbols from /boot/kernel.FAFNIR/vmm.ko... > Reading symbols from /usr/lib/debug//boot/kernel.FAFNIR/vmm.ko.debug... > Reading symbols from /boot/kernel.FAFNIR/geom_journal.ko... > Reading symbols from /usr/lib/debug//boot/kernel.FAFNIR/geom_journal.ko.d= ebug... > Reading symbols from /boot/kernel.FAFNIR/linux64.ko... > Reading symbols from /usr/lib/debug//boot/kernel.FAFNIR/linux64.ko.debug.= .. > Reading symbols from /boot/kernel.FAFNIR/linprocfs.ko... > Reading symbols from /usr/lib/debug//boot/kernel.FAFNIR/linprocfs.ko.debu= g... > __curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:57 > warning: 57 /usr/src/sys/amd64/include/pcpu_aux.h: No such file or di= rectory > (kgdb) where > #0 __curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:57 > #1 doadump (textdump=3D) at /usr/src/sys/kern/kern_shutdo= wn.c:399 > #2 0xffffffff806dbdb4 in kern_reboot (howto=3D260) at /usr/src/sys/kern/= kern_shutdown.c:519 > #3 0xffffffff806dc275 in vpanic (fmt=3D0xffffffff80bca28a "%s", ap=3Dap@= entry=3D0xfffffe01fb9b7be0) at /usr/src/sys/kern/kern_shutdown.c:974 > #4 0xffffffff806dc113 in panic (fmt=3D) at /usr/src/sys/ker= n/kern_shutdown.c:887 > #5 0xffffffff80aa7638 in trap_fatal (frame=3D, eva=3D) at /usr/src/sys/amd64/amd64/trap.c:1028 > #6 0xffffffff80aa7527 in trap (frame=3D0xfffffe01fb9b7d60) at /usr/src/s= ys/amd64/amd64/trap.c:684 > #7 > #8 g_cache_lookup (sc=3D0xfffff8011ba60180, bno=3D2972887) at /usr/src/s= ys/geom/cache/g_cache.c:254 > #9 g_cache_read (sc=3Dsc@entry=3D0xfffff8011ba60180, bp=3Dbp@entry=3D0xf= ffff80e0f318cc0) at /usr/src/sys/geom/cache/g_cache.c:266 > #10 0xffffffff80618046 in g_cache_start (bp=3D0xfffff80e0f318cc0) at /usr= /src/sys/geom/cache/g_cache.c:363 > #11 0xffffffff80630507 in g_io_schedule_down (tp=3D) at /u= sr/src/sys/geom/geom_io.c:849 > #12 0xffffffff80630edc in g_down_procbody (arg=3D) at /usr= /src/sys/geom/geom_kern.c:108 > #13 0xffffffff80697663 in fork_exit (callout=3D0xffffffff80630e80 , arg=3D0x0, frame=3D0xfffffe01fb9b7f40) at /usr/src/sys/kern/ker= n_fork.c:1201 > #14 --=20 You are receiving this mail because: You are the assignee for the bug.=