[Xen-devel] Xen-unstable panic: FATAL PAGE FAULT

[Mark Hurenkamp <mark.hurenkamp@xxxxxxxxx>]

Hi,


While playing with my xen server (which is running xen-unstable/linux pvops),
it suddenly crashed with the following messages on the serial port.
This is a recent version of xen-unstable, but i am a few updates behind.
I've seen this only once, so perhaps it is hard to reproduce. I hope this
info is still of use to someone.


Regards,
Mark.


(XEN) tmem: all pools frozen for all domains
(XEN) tmem: all pools frozen for all domains
(XEN) tmem: all pools thawed for all domains
(XEN) tmem: all pools thawed for all domains
(XEN) paging.c:170: paging_free_log_dirty_bitmap: used 19 pages for domain 3 
dirty logging
(XEN) ----[ Xen-4.0.0-rc3-pre  x86_64  debug=y  Tainted:    C ]----
(XEN) CPU:    2
(XEN) RIP:    e008:[<ffff82c4801150c5>] free_heap_pages+0x53a/0x555
(XEN) RFLAGS: 0000000000010282   CONTEXT: hypervisor
(XEN) rax: ffff82c4803004c0   rbx: ffff82f600ae4b40   rcx: ffff8315ffffffe0
(XEN) rdx: 00000000ffffffff   rsi: ffff8315ffffffe0   rdi: ffff82f600000000
(XEN) rbp: ffff83013ff27bc8   rsp: ffff83013ff27b68   r8:  0000000000000000
(XEN) r9:  0200000000000000   r10: 0000000000000001   r11: 0080000000000000
(XEN) r12: ffff82f600ae4b60   r13: 0000000000000000   r14: 00007d0a00000000
(XEN) r15: 0000000000000000   cr0: 000000008005003b   cr4: 00000000000026f0
(XEN) cr3: 0000000101001000   cr2: ffff8315ffffffe4
(XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: e010   cs: e008
(XEN) Xen stack trace from rsp=ffff83013ff27b68:
(XEN)    c2c2c2c2c2c2c2c2 0000000000000064 0000000000000000 0000000000000012
(XEN)    0000000000000297 000000000000017a ffff82c48011e1e3 0000000000000000
(XEN)    ffff83010fc50000 ffff82f600ae4b60 0000000000069f65 ffff82f600ae4b80
(XEN)    ffff83013ff27c18 ffff82c4801153ee 0000000000000001 0000000000000001
(XEN)    ffff82f600ae49c8 ffff82f600ae4b60 0000000000800727 ffff83013fef0000
(XEN)    ffff82f600ae4b60 ffff83010fc50000 ffff83013ff27c38 ffff82c48015d4d0
(XEN)    000000000000e010 800000005725b727 ffff83013ff27c78 ffff82c48015f8d8
(XEN)    80000000571bf727 ffff8300aae3ac60 ffff83013fef0000 ffff8300aae3b000
(XEN)    ffff83013ff27f28 0000000000000000 ffff83013ff27cd8 ffff82c48015eaf4
(XEN)    ffff83013ff27d08 ffff82c48015fe3d ffff83013ff27cf8 ffff82c48015d4fe
(XEN)    ffff83013ff27cc8 1400000000000001 ffff82f60155c740 ffff82f60155c740
(XEN)    ffff83013ff27f28 007fffffffffffff ffff83013ff27d28 ffff82c48015f11c
(XEN)    000000003fef0000 ffff82f60155c750 ffff83013ff27d38 ffff83013fef0000
(XEN)    0000000000000000 ffffc9000000c2b0 00000000000aae3a ffff83013ff27f28
(XEN)    ffff83013ff27d38 ffff82c48015f2f8 ffff83013ff27e38 ffff82c480163a4f
(XEN)    ffff83013fef0018 00007ff03fef0000 0000000000000000 ffff82c480264db0
(XEN)    ffff82c480264db8 ffff83013ff27f28 ffff83013ff27f28 ffff83013fef0218
(XEN)    ffff8300bf524000 ffff83013fef0000 ffff8300bf524000 ffff83013fef0000
(XEN)    ffff83013fff3da8 0000000100000002 ffff830100000000 ffff82f60155c740
(XEN)    800000008eadf063 ffff880000000001 ffff83013ff27de8 000000003fff3d90
(XEN) Xen call trace:
(XEN)    [<ffff82c4801150c5>] free_heap_pages+0x53a/0x555
(XEN)    [<ffff82c4801153ee>] free_domheap_pages+0x30e/0x3cc
(XEN)    [<ffff82c48015d4d0>] put_page+0x6c/0x73
(XEN)    [<ffff82c48015f8d8>] put_page_from_l1e+0x19f/0x1b5
(XEN)    [<ffff82c48015eaf4>] free_page_type+0x25c/0x7b0
(XEN)    [<ffff82c48015f11c>] __put_page_type+0xd4/0x292
(XEN)    [<ffff82c48015f2f8>] put_page_type+0xe/0x23
(XEN)    [<ffff82c480163a4f>] do_mmuext_op+0x6ff/0x14b8
(XEN)    [<ffff82c480114235>] do_multicall+0x285/0x410
(XEN)    [<ffff82c4801f01bf>] syscall_enter+0xef/0x149
(XEN)
(XEN) Pagetable walk from ffff8315ffffffe4:
(XEN)  L4[0x106] = 00000000bf4f5027 5555555555555555
(XEN)  L3[0x057] = 0000000000000000 ffffffffffffffff
(XEN)
(XEN) ****************************************
(XEN) Panic on CPU 2:
(XEN) FATAL PAGE FAULT
(XEN) [error_code=0002]
(XEN) Faulting linear address: ffff8315ffffffe4
(XEN) ****************************************
(XEN)
(XEN) Reboot in five seconds...



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