Date: Tue, 29 Aug 2023 19:08:35 -0700 From: Cy Schubert <Cy.Schubert@cschubert.com> To: freebsd-current@freebsd.org Subject: ZFS Page Derefrence Message-ID: <20230830020835.A901AA9@slippy.cwsent.com>
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Hi
Just got the following panic on an and64 machine running poudriere building
i386 packages.
panic: vm_page_dequeue_deferred: page 0xfffffe000b222808 has unexpected
queue state^M
cpuid = 1^M
time = 1693359541^M
KDB: stack backtrace:^M
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame
0xfffffe00bf55d600^M
vpanic() at vpanic+0x132/frame 0xfffffe00bf55d730^M
panic() at panic+0x43/frame 0xfffffe00bf55d790^M
vm_page_dequeue_deferred() at vm_page_dequeue_deferred+0xb2/frame
0xfffffe00bf55d7a0^M
vm_page_free_prep() at vm_page_free_prep+0x11b/frame 0xfffffe00bf55d7c0^M
vm_page_free_toq() at vm_page_free_toq+0x12/frame 0xfffffe00bf55d7f0^M
vm_object_page_remove() at vm_object_page_remove+0xb6/frame
0xfffffe00bf55d850^M
vn_pages_remove_valid() at vn_pages_remove_valid+0x48/frame
0xfffffe00bf55d880^M
zfs_rezget() at zfs_rezget+0x35/frame 0xfffffe00bf55da60^M
zfs_resume_fs() at zfs_resume_fs+0x1c8/frame 0xfffffe00bf55dab0^M
zfs_ioc_rollback() at zfs_ioc_rollback+0x157/frame 0xfffffe00bf55db00^M
zfsdev_ioctl_common() at zfsdev_ioctl_common+0x612/frame
0xfffffe00bf55dbc0^M
zfsdev_ioctl() at zfsdev_ioctl+0x12a/frame 0xfffffe00bf55dbf0^M
devfs_ioctl() at devfs_ioctl+0xd2/frame 0xfffffe00bf55dc40^M
vn_ioctl() at vn_ioctl+0xc2/frame 0xfffffe00bf55dcb0^M
devfs_ioctl_f() at devfs_ioctl_f+0x1e/frame 0xfffffe00bf55dcd0^M
kern_ioctl() at kern_ioctl+0x286/frame 0xfffffe00bf55dd30^M
sys_ioctl() at sys_ioctl+0x152/frame 0xfffffe00bf55de00^M
amd64_syscall() at amd64_syscall+0x138/frame 0xfffffe00bf55df30^M
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe00bf55df30^M
--- syscall (54, FreeBSD ELF64, ioctl), rip = 0x191264a4fbca, rsp =
0x19125ca905c8, rbp = 0x19125c
a90640 ---^M
Uptime: 10h14m15s^M
Dumping 2829 out of 7998 MB:..1%..11%..21%..31%..41%..51%..61%..71%..81%..91
%^M
Dump complete^M
Automatic reboot in 15 seconds - press a key on the console to abort^M
Rebooting...^M
cpu_reset: Restarting BSP^M
cpu_reset_proxy: Stopped CPU 1^M
^M
1 FreeBSD^M
2 FreeBSD^M
3 FreeBSD^M
4 FreeBSD^M
5 Drive 1^M
uname reports,
FreeBSD bob 15.0-CURRENT FreeBSD 15.0-CURRENT amd64 1500000 #1
komquats-n265075-2e8edbc285cf: Tue Aug 29 03:51:59 PDT 2023
root@cwsys:/export/obj/opt/src/git-src/amd64.amd64/sys/BREAK2 amd64
My BREAK2 kernel removes devices I don't use and enables keystrokes to
interrupt the system from the conosle (conserver). Local patches affect
ipfilter only.
Head of core.txt:
__curthread () at /opt/src/git-src/sys/amd64/include/pcpu_aux.h:57
57 __asm("movq %%gs:%P1,%0" : "=r" (td) : "n" (offsetof(struct
pcpu
,
(kgdb) #0 __curthread () at /opt/src/git-src/sys/amd64/include/pcpu_aux.h:5
7
#1 doadump (textdump=textdump@entry=1)
at /opt/src/git-src/sys/kern/kern_shutdown.c:405
#2 0xffffffff806c1b30 in kern_reboot (howto=260)
at /opt/src/git-src/sys/kern/kern_shutdown.c:526
#3 0xffffffff806c202f in vpanic (
fmt=0xffffffff80b5da55 "%s: page %p has unexpected queue state",
ap=ap@entry=0xfffffe00bf55d770)
at /opt/src/git-src/sys/kern/kern_shutdown.c:970
#4 0xffffffff806c1dd3 in panic (fmt=<unavailable>)
at /opt/src/git-src/sys/kern/kern_shutdown.c:894
#5 0xffffffff809daab2 in vm_page_dequeue_deferred (m=<unavailable>,
m@entry=0xfffffe000b222808) at /opt/src/git-src/sys/vm/vm_page.c:3790
#6 0xffffffff809ddfeb in vm_page_free_prep (m=m@entry=0xfffffe000b222808)
at /opt/src/git-src/sys/vm/vm_page.c:3928
#7 0xffffffff809d5b52 in vm_page_free_toq (m=<unavailable>,
m@entry=0xfffffe000b222808) at /opt/src/git-src/sys/vm/vm_page.c:3970
#8 0xffffffff809d5b3b in vm_page_free (m=<unavailable>,
m@entry=0xfffffe000b222808) at /opt/src/git-src/sys/vm/vm_page.c:1328
#9 0xffffffff809d0906 in vm_object_page_remove (object=0xfffff8018bff0e70,
start=0, end=0, options=4) at /opt/src/git-src/sys/vm/vm_object.c:2157
#10 0xffffffff807d3218 in vn_pages_remove_valid (vp=<optimized out>,
start=start@entry=0, end=end@entry=0)
at /opt/src/git-src/sys/kern/vfs_vnops.c:2558
#11 0xffffffff816b7315 in zfs_rezget (zp=zp@entry=0xfffff801768b6ae0)
at /opt/src/git-src/sys/contrib/openzfs/module/os/freebsd/zfs/zfs_znode.
c:11
00
#12 0xffffffff816a6808 in zfs_resume_fs (zfsvfs=<optimized out>,
ds=ds@entry=0xfffff8007b609000)
at /opt/src/git-src/sys/contrib/openzfs/module/os/freebsd/zfs/zfs_vfsops
.c:2
006
#13 0xffffffff81867e87 in zfs_ioc_rollback (
fsname=0xfffffe00fbf42000 "bob/poudriere/bob/jails/HEADi386-new-ports-re
f/06
", fsname@entry=<error reading variable: value is not available>,
innvl=<unavailable>,
innvl@entry=<error reading variable: value is not available>,
outnvl=<unavailable>,
outnvl@entry=<error reading variable: value is not available>)
at /opt/src/git-src/sys/contrib/openzfs/module/zfs/zfs_ioctl.c:4407
#14 0xffffffff818635c2 in zfsdev_ioctl_common (vecnum=vecnum@entry=25,
zc=zc@entry=0xfffffe00fbf42000, flag=flag@entry=0)
at /opt/src/git-src/sys/contrib/openzfs/module/zfs/zfs_ioctl.c:7798
#15 0xffffffff81696fca in zfsdev_ioctl (dev=<optimized out>,
zcmd=<unavailable>,
zcmd@entry=<error reading variable: value is not available>,
arg=0xfffffe00bf55dd50 "\017",
arg@entry=<error reading variable: value is not available>,
flag=<optimized out>, td=<optimized out>)
at /opt/src/git-src/sys/contrib/openzfs/module/os/freebsd/zfs/kmod_core.
c:16
8
#16 0xffffffff8054b482 in devfs_ioctl (ap=0xfffffe00bf55dc50)
at /opt/src/git-src/sys/fs/devfs/devfs_vnops.c:933
#17 0xffffffff807cf032 in vn_ioctl (fp=0xfffff801909f6870,
com=<optimized out>, data=0xfffffe00bf55dd50,
active_cred=0xfffff800b6ed0b00, td=<unavailable>)
at /opt/src/git-src/sys/kern/vfs_vnops.c:1701
#18 0xffffffff8054bb5e in devfs_ioctl_f (fp=<unavailable>,
fp@entry=<error reading variable: value is not available>,
com=<unavailable>,
com@entry=<error reading variable: value is not available>,
data=<unavailable>,
data@entry=<error reading variable: value is not available>,
cred=<unavailable>,
cred@entry=<error reading variable: value is not available>,
td=<unavailable>,
td@entry=<error reading variable: value is not available>)
at /opt/src/git-src/sys/fs/devfs/devfs_vnops.c:864
#19 0xffffffff8073aca6 in fo_ioctl (fp=0xfffff801909f6870, com=3222821401,
data=<unavailable>, active_cred=<unavailable>, td=0xfffffe00c3e43900)
at /opt/src/git-src/sys/sys/file.h:366
#20 kern_ioctl (td=td@entry=0xfffffe00c3e43900, fd=4,
com=com@entry=3222821401, data=<unavailable>,
data@entry=0xfffffe00bf55dd50 "\017")
at /opt/src/git-src/sys/kern/sys_generic.c:805
#21 0xffffffff8073a9b2 in sys_ioctl (td=0xfffffe00c3e43900,
uap=0xfffffe00c3e43d00) at /opt/src/git-src/sys/kern/sys_generic.c:713
#22 0xffffffff80a73a88 in syscallenter (td=<optimized out>)
at /opt/src/git-src/sys/amd64/amd64/../../kern/subr_syscall.c:187
#23 amd64_syscall (td=0xfffffe00c3e43900, traced=0)
at /opt/src/git-src/sys/amd64/amd64/trap.c:1197
#24 <signal handler called>
#25 0x0000191264a4fbca in ?? ()
Backtrace stopped: Cannot access memory at address 0x19125ca905c8
(kgdb)
*vp looks good.
Dump is available if needed.
--
Cheers,
Cy Schubert <Cy.Schubert@cschubert.com>
FreeBSD UNIX: <cy@FreeBSD.org> Web: https://FreeBSD.org
NTP: <cy@nwtime.org> Web: https://nwtime.org
e^(i*pi)+1=0
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