[Bug 220691] ZFS instantly panics on boot from degraded volume or after a drive failure
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bugzilla-noreply at freebsd.org
Wed Jul 12 20:07:20 UTC 2017
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=220691
Bug ID: 220691
Summary: ZFS instantly panics on boot from degraded volume or
after a drive failure
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Many People
Priority: ---
Component: kern
Assignee: freebsd-bugs at FreeBSD.org
Reporter: peter at FreeBSD.org
r320065: Sun Jun 18 04:22:09 UTC 2017 - works
r320900: Wed Jul 12 03:00:15 UTC 2017 - panics
Sample of boot failure:
<118>Setting hostname: tiny.nyi.freebsd.org.
<118>Setting up harvesting: [UMA],
[FS_ATIME],SWI,INTERRUPT,NET_NG,NET_ETHER,NET_TUN,MOUSE,KEYBOARD,D
<118>Feeding entropy: .
Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address = 0x28
Fatal trap 12: page fault while in kernel mode
cpuid = 3; apic id = 07
fault virtual address = 0x28
Fatal trap 12: page fault while in kernel mode
cpuid = 2; apic id = 06
apic id = 00
fault virtual address = 0x28
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = interrupt enabled, resume, fault virtual address
= 0x28
fault code = supervisor read data, page not present
instruction pointer = 0x20:0xffffffff803aab56
stack pointer = 0x28:0xfffffe0239fa3a90
fault code = supervisor read data, page not present
IOPL = 0
current process = 0 (zio_write_intr_0)
frame pointer = 0x28:0xfffffe0239fa3aa0
db> where
Tracing pid 0 tid 100471 td 0xfffff80005452000
vdev_geom_io_done() at vdev_geom_io_done+0x36/frame 0xfffffe0239f9eaa0
zio_vdev_io_done() at zio_vdev_io_done+0x176/frame 0xfffffe0239f9ead0
zio_execute() at zio_execute+0xac/frame 0xfffffe0239f9eb20
taskqueue_run_locked() at taskqueue_run_locked+0x127/frame 0xfffffe0239f9eb80
taskqueue_thread_loop() at taskqueue_thread_loop+0xc8/frame 0xfffffe0239f9ebb0
fork_exit() at fork_exit+0x85/frame 0xfffffe0239f9ebf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0239f9ebf0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
Sample of panic when a volume degrades:
root at nope.ysv.freebsd.org:/home/peter # zpool offline zroot mfid5p3
Fatal trap 12: page fault while in kernel mode
cpuid = 4; apic id = 04
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x28
Fatal trap 12: page fault while in kernel mode
Fatal trap 12: page fault while in kernel mode
Fatal trap 12: page fault while in kernel mode
cpuid = 7; apic id = 07
cpuid = 1; apic id = 01
fault virtual address = 0x28
fault code = supervisor read data, page not present
cpuid = 3; cpuid = 5; apic id = 03
Fatal trap 12: page fault while in kernel mode
apic id = 05
fault virtual address = 0x28
fault virtual address = 0x28
fault code = supervisor read data, page not present
instruction pointer = 0x20:0xffffffff803aab56
stack pointer = 0x28:0xfffffe085fb3aa90
instruction pointer = 0x20:0xffffffff803aab56
fault code = supervisor read data, page not present
cpuid = 6; fault virtual address = 0x28
Fatal trap 12: page fault while in kernel mode
fault code = supervisor read data, page not present
instruction pointer = 0x20:0xffffffff803aab56
stack pointer = 0x28:0xfffffe085fb3fa90
frame pointer = 0x28:0xfffffe085fb3aaa0
fault code = supervisor read data, page not present
cpuid = 2; apic id = 02
apic id = 06
instruction pointer = 0x20:0xffffffff803aab56
fault virtual address = 0x28
fault code = supervisor read data, page not present
stack pointer = 0x28:0xfffffe085fb30a90
instruction pointer = 0x20:0xffffffff803aab56
stack pointer = 0x28:0xfffffe085fb35a90
frame pointer = 0x28:0xfffffe085fb3faa0
code segment = base 0x0, limit 0xfffff, type 0x1b
stack pointer = 0x28:0xfffffe085fb44a90
frame pointer = 0x28:0xfffffe085fb44aa0
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, long 1, def32 0, gran 1
fault virtual address = 0x28
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = interrupt enabled, instruction pointer =
0x20:6
frame pointer = 0x28:0xfffffe085fb30aa0
code segment = base 0x0, limit 0xfffff, type 0x1b
code segment = base 0x0, limit 0xfffff, type 0x1b
frame pointer = 0x28:0xfffffe085fb35aa0
code segment = base 0x0, limit 0xfffff, type 0x1b
resume, IOPL = 0
stack pointer = 0x28:0xfffffe085fb26a90
= DPL 0, pres 1, long 1, def32 0, gran 1
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = fault code = supervisor read data, page
not
frame pointer = 0x28:0xfffffe085fb26aa0
instruction pointer = 0x20:0xffffffff803aab56
processor eflags = interrupt enabled, code segment = base
b
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 0 (zio_write_intr_2)
[ thread pid 0 tid 100500 ]
Stopped at vdev_geom_io_done+0x36: movq 0x28(%rbx),%rsi
db> where
Tracing pid 0 tid 100500 td 0xfffff8000aae6000
vdev_geom_io_done() at vdev_geom_io_done+0x36/frame 0xfffffe085fb30aa0
zio_vdev_io_done() at zio_vdev_io_done+0x176/frame 0xfffffe085fb30ad0
zio_execute() at zio_execute+0xac/frame 0xfffffe085fb30b20
taskqueue_run_locked() at taskqueue_run_locked+0x127/frame 0xfffffe085fb30b80
taskqueue_thread_loop() at taskqueue_thread_loop+0xc8/frame 0xfffffe085fb30bb0
fork_exit() at fork_exit+0x85/frame 0xfffffe085fb30bf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe085fb30bf0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
db>
All cores trapped concurrently.
zio in the vdev_geom_io_done() function is null.
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